An identifier is ambiguous if it is one of the keywords

src/Core/SettingsChangesHistory.cpp

@@ -75,7 +75,7 @@ static std::initializer_list<std::pair<ClickHouseVersion, SettingsChangesHistory
             {"join_output_by_rowlist_perkey_rows_threshold", 0, 5, "The lower limit of per-key average rows in the right table to determine whether to output by row list in hash join."},
             {"create_if_not_exists", false, false, "New setting."},
             {"allow_materialized_view_with_bad_select", true, true, "Support (but not enable yet) stricter validation in CREATE MATERIALIZED VIEW"},
-            {"output_format_identifier_quoting_rule", "WhenNecessary", "WhenNecessary", "New setting."},
+            {"output_format_identifier_quoting_rule", "when_necessary", "when_necessary", "New setting."},
             {"output_format_identifier_quoting_style", "Backticks", "Backticks", "New setting."},
             {"database_replicated_allow_replicated_engine_arguments", 1, 0, "Don't allow explicit arguments by default"},
             {"database_replicated_allow_explicit_uuid", 0, 0, "Added a new setting to disallow explicitly specifying table UUID"},

src/Core/SettingsEnums.cpp

@@ -254,7 +254,7 @@ IMPLEMENT_SETTING_ENUM(IdentifierQuotingStyle, ErrorCodes::BAD_ARGUMENTS,
 IMPLEMENT_SETTING_ENUM(
     IdentifierQuotingRule,
     ErrorCodes::BAD_ARGUMENTS,
-    {{"UserDisplay", IdentifierQuotingRule::UserDisplay},
-     {"WhenNecessary", IdentifierQuotingRule::WhenNecessary},
-     {"Always", IdentifierQuotingRule::Always}})
+    {{"user_display", IdentifierQuotingRule::UserDisplay},
+     {"when_necessary", IdentifierQuotingRule::WhenNecessary},
+     {"always", IdentifierQuotingRule::Always}})
 }

src/Parsers/ASTAssignment.h

@@ -30,7 +30,7 @@ protected:
     {
 
         settings.ostr << (settings.hilite ? hilite_identifier : "");
-        settings.writeIdentifier(column_name, false);
+        settings.writeIdentifier(column_name, /*ambiguous=*/false);
         settings.ostr << (settings.hilite ? hilite_none : "");
 
         settings.ostr << (settings.hilite ? hilite_operator : "") << " = " << (settings.hilite ? hilite_none : "");

src/Parsers/ASTColumnDeclaration.cpp

@@ -66,7 +66,7 @@ void ASTColumnDeclaration::formatImpl(const FormatSettings & format_settings, Fo
 {
     frame.need_parens = false;
 
-    format_settings.writeIdentifier(name, true);
+    format_settings.writeIdentifier(name, /*ambiguous=*/true);
 
     if (type)
     {

src/Parsers/ASTDictionaryAttributeDeclaration.cpp

@@ -35,7 +35,7 @@ void ASTDictionaryAttributeDeclaration::formatImpl(const FormatSettings & settin
 {
     frame.need_parens = false;
 
-    settings.writeIdentifier(name, true);
+    settings.writeIdentifier(name, /*ambiguous=*/true);
 
     if (type)
     {

src/Parsers/ASTIdentifier.cpp

@@ -108,7 +108,7 @@ void ASTIdentifier::formatImplWithoutAlias(const FormatSettings & settings, Form
     auto format_element = [&](const String & elem_name)
     {
         settings.ostr << (settings.hilite ? hilite_identifier : "");
-        settings.writeIdentifier(elem_name, false);
+        settings.writeIdentifier(elem_name, /*ambiguous=*/false);
         settings.ostr << (settings.hilite ? hilite_none : "");
     };
 

src/Parsers/ASTIndexDeclaration.cpp

@@ -79,7 +79,7 @@ void ASTIndexDeclaration::formatImpl(const FormatSettings & s, FormatState & sta
         }
         else
         {
-            s.writeIdentifier(name, false);
+            s.writeIdentifier(name, /*ambiguous=*/false);
             s.ostr << " ";
             expr->formatImpl(s, state, frame);
         }

src/Parsers/ASTProjectionDeclaration.cpp

@@ -17,7 +17,7 @@ ASTPtr ASTProjectionDeclaration::clone() const
 
 void ASTProjectionDeclaration::formatImpl(const FormatSettings & settings, FormatState & state, FormatStateStacked frame) const
 {
-    settings.writeIdentifier(name, false);
+    settings.writeIdentifier(name, /*ambiguous=*/false);
     std::string indent_str = settings.one_line ? "" : std::string(4u * frame.indent, ' ');
     std::string nl_or_nothing = settings.one_line ? "" : "\n";
     settings.ostr << settings.nl_or_ws << indent_str << "(" << nl_or_nothing;

src/Parsers/ASTSubquery.cpp

@@ -35,7 +35,7 @@ void ASTSubquery::formatImplWithoutAlias(const FormatSettings & settings, Format
     if (!cte_name.empty())
     {
         settings.ostr << (settings.hilite ? hilite_identifier : "");
-        settings.writeIdentifier(cte_name, false);
+        settings.writeIdentifier(cte_name, /*ambiguous=*/false);
         settings.ostr << (settings.hilite ? hilite_none : "");
         return;
     }

src/Parsers/ASTWithAlias.cpp

@@ -10,7 +10,7 @@ namespace DB
 static void writeAlias(const String & name, const ASTWithAlias::FormatSettings & settings)
 {
     settings.ostr << (settings.hilite ? IAST::hilite_keyword : "") << " AS " << (settings.hilite ? IAST::hilite_alias : "");
-    settings.writeIdentifier(name, false);
+    settings.writeIdentifier(name, /*ambiguous=*/false);
     settings.ostr << (settings.hilite ? IAST::hilite_none : "");
 }
 
@@ -22,7 +22,7 @@ void ASTWithAlias::formatImpl(const FormatSettings & settings, FormatState & sta
     if (!alias.empty() && !state.printed_asts_with_alias.emplace(frame.current_select, alias, getTreeHash(/*ignore_aliases=*/ true)).second)
     {
         settings.ostr << (settings.hilite ? IAST::hilite_identifier : "");
-        settings.writeIdentifier(alias, false);
+        settings.writeIdentifier(alias, /*ambiguous=*/false);
         settings.ostr << (settings.hilite ? IAST::hilite_none : "");
     }
     else

src/Parsers/ASTWithElement.cpp

@@ -19,7 +19,7 @@ void ASTWithElement::formatImpl(const FormatSettings & settings, FormatState & s
     std::string indent_str = settings.one_line ? "" : std::string(4 * frame.indent, ' ');
 
     settings.ostr << (settings.hilite ? hilite_alias : "");
-    settings.writeIdentifier(name, false);
+    settings.writeIdentifier(name, /*ambiguous=*/false);
     settings.ostr << (settings.hilite ? hilite_none : "");
     settings.ostr << (settings.hilite ? hilite_keyword : "") << " AS" << (settings.hilite ? hilite_none : "");
     settings.ostr << settings.nl_or_ws << indent_str;

src/Parsers/IAST.cpp

@@ -3,10 +3,13 @@
 #include <IO/Operators.h>
 #include <IO/WriteBufferFromString.h>
 #include <IO/WriteHelpers.h>
+#include <Parsers/CommonParsers.h>
+#include <Parsers/IdentifierQuotingStyle.h>
+#include <Poco/String.h>
 #include <Common/SensitiveDataMasker.h>
 #include <Common/SipHash.h>
-#include "Parsers/IdentifierQuotingStyle.h"
 
+#include <algorithm>
 
 namespace DB
 {
@@ -220,6 +223,13 @@ String IAST::getColumnNameWithoutAlias() const
 
 void IAST::FormatSettings::writeIdentifier(const String & name, bool ambiguous) const
 {
+    if (!ambiguous)
+    {
+        // Identifier is ambiguous if it is one of the defined keywords, set `ambiguous`
+        const auto & keywords = getAllKeyWords();
+        ambiguous = std::find(keywords.begin(), keywords.end(), Poco::toUpper(name)) != keywords.end();
+    }
+
     bool must_quote
         = (identifier_quoting_rule == IdentifierQuotingRule::Always
            || (ambiguous && identifier_quoting_rule == IdentifierQuotingRule::WhenNecessary));

src/Parsers/IdentifierQuotingStyle.h

@@ -16,8 +16,8 @@ enum class IdentifierQuotingStyle : uint8_t
 
 enum class IdentifierQuotingRule : uint8_t
 {
-    UserDisplay,    /// When the identifiers is one of the certain keywords defined in `writeProbablyQuotedStringImpl`
     WhenNecessary, /// When the identifiers is one of the certain keywords defined in `writeProbablyQuotedStringImpl`, and ambiguous identifiers passed to `writeIdentifier`
     Always, /// Always quote identifiers
+    UserDisplay, /// When the identifiers is one of the certain keywords defined in `writeProbablyQuotedStringImpl`
 };
 }

tests/queries/0_stateless/03230_output_format_identifier_quoting_style.reference

@@ -1,67 +1,67 @@
 Settings: default
-CREATE TABLE default.uk_price_paid\n(\n    `price` UInt32,\n    `date` Date,\n    `postcode1` LowCardinality(String),\n    `postcode2` LowCardinality(String),\n    `type` Enum8(\'other\' = 0, \'terraced\' = 1, \'semi-detached\' = 2, \'detached\' = 3, \'flat\' = 4),\n    `is_new` UInt8,\n    `duration` Enum8(\'unknown\' = 0, \'freehold\' = 1, \'leasehold\' = 2),\n    `addr1` String,\n    `addr2` String,\n    `street` LowCardinality(String),\n    `locality` LowCardinality(String),\n    `town` LowCardinality(String),\n    `district` LowCardinality(String),\n    `county` LowCardinality(String),\n    INDEX county_index county TYPE set(10) GRANULARITY 1,\n    PROJECTION town_date_projection\n    (\n        SELECT \n            town,\n            date,\n            price\n        ORDER BY \n            town,\n            date\n    ),\n    PROJECTION handy_aggs_projection\n    (\n        SELECT \n            avg(price),\n            max(price),\n            sum(price)\n        GROUP BY town\n    )\n)\nENGINE = MergeTree\nORDER BY (postcode1, postcode2, date)\nSETTINGS index_granularity = 8192
-CREATE MATERIALIZED VIEW default.prices_by_year_view TO default.prices_by_year_dest\n(\n    `price` UInt32,\n    `date` Date,\n    `addr1` String,\n    `addr2` String,\n    `street` LowCardinality(String),\n    `town` LowCardinality(String),\n    `district` LowCardinality(String),\n    `county` LowCardinality(String)\n)\nAS SELECT\n    price,\n    date,\n    addr1,\n    addr2,\n    street,\n    town,\n    district,\n    county\nFROM default.uk_price_paid
-CREATE TABLE default.uk_prices_aggs_dest\n(\n    `month` Date,\n    `min_price` SimpleAggregateFunction(min, UInt32),\n    `max_price` SimpleAggregateFunction(max, UInt32),\n    `volume` AggregateFunction(count, UInt32),\n    `avg_price` AggregateFunction(avg, UInt32)\n)\nENGINE = AggregatingMergeTree\nPRIMARY KEY month\nORDER BY month\nSETTINGS index_granularity = 8192
-CREATE MATERIALIZED VIEW default.uk_prices_aggs_view TO default.uk_prices_aggs_dest\n(\n    `month` Date,\n    `min_price` SimpleAggregateFunction(min, UInt32),\n    `max_price` SimpleAggregateFunction(max, UInt32),\n    `volume` AggregateFunction(count, UInt32),\n    `avg_price` AggregateFunction(avg, UInt32)\n)\nAS WITH toStartOfMonth(date) AS month\nSELECT\n    month,\n    minSimpleState(price) AS min_price,\n    maxSimpleState(price) AS max_price,\n    countState(price) AS volume,\n    avgState(price) AS avg_price\nFROM default.uk_price_paid\nGROUP BY month
-CREATE DICTIONARY default.uk_mortgage_rates_dict\n(\n    `date` DateTime64,\n    `variable` Decimal32(2),\n    `fixed` Decimal32(2),\n    `bank` Decimal32(2)\n)\nPRIMARY KEY date\nSOURCE(CLICKHOUSE(TABLE \'uk_mortgage_rates\'))\nLIFETIME(MIN 0 MAX 2628000000)\nLAYOUT(COMPLEX_KEY_HASHED())
-Settings: WhenNecessary & None
-Settings: UserDisplay & None
-CREATE TABLE default.uk_price_paid\n(\n    price UInt32,\n    date Date,\n    postcode1 LowCardinality(String),\n    postcode2 LowCardinality(String),\n    type Enum8(\'other\' = 0, \'terraced\' = 1, \'semi-detached\' = 2, \'detached\' = 3, \'flat\' = 4),\n    is_new UInt8,\n    duration Enum8(\'unknown\' = 0, \'freehold\' = 1, \'leasehold\' = 2),\n    addr1 String,\n    addr2 String,\n    street LowCardinality(String),\n    locality LowCardinality(String),\n    town LowCardinality(String),\n    district LowCardinality(String),\n    county LowCardinality(String),\n    INDEX county_index county TYPE set(10) GRANULARITY 1,\n    PROJECTION town_date_projection\n    (\n        SELECT \n            town,\n            date,\n            price\n        ORDER BY \n            town,\n            date\n    ),\n    PROJECTION handy_aggs_projection\n    (\n        SELECT \n            avg(price),\n            max(price),\n            sum(price)\n        GROUP BY town\n    )\n)\nENGINE = MergeTree\nORDER BY (postcode1, postcode2, date)\nSETTINGS index_granularity = 8192
+CREATE TABLE default.uk_price_paid\n(\n    `Table` String,\n    `Engine` String,\n    `price` UInt32,\n    `date` Date,\n    `postcode1` LowCardinality(String),\n    `postcode2` LowCardinality(String),\n    `type` Enum8(\'other\' = 0, \'terraced\' = 1, \'semi-detached\' = 2, \'detached\' = 3, \'flat\' = 4),\n    `is_new` UInt8,\n    `duration` Enum8(\'unknown\' = 0, \'freehold\' = 1, \'leasehold\' = 2),\n    `addr1` String,\n    `addr2` String,\n    `street` LowCardinality(String),\n    `locality` LowCardinality(String),\n    `town` LowCardinality(String),\n    `district` LowCardinality(String),\n    `county` LowCardinality(String),\n    INDEX county_index county TYPE set(10) GRANULARITY 1,\n    PROJECTION town_date_projection\n    (\n        SELECT \n            town,\n            `date`,\n            price\n        ORDER BY \n            town,\n            `date`\n    ),\n    PROJECTION handy_aggs_projection\n    (\n        SELECT \n            avg(price),\n            max(price),\n            sum(price)\n        GROUP BY town\n    )\n)\nENGINE = MergeTree\nORDER BY (postcode1, postcode2, `date`)\nSETTINGS index_granularity = 8192
+CREATE MATERIALIZED VIEW default.prices_by_year_view TO default.prices_by_year_dest\n(\n    `price` UInt32,\n    `date` Date,\n    `addr1` String,\n    `addr2` String,\n    `street` LowCardinality(String),\n    `town` LowCardinality(String),\n    `district` LowCardinality(String),\n    `county` LowCardinality(String)\n)\nAS SELECT\n    price,\n    `date`,\n    addr1,\n    addr2,\n    street,\n    town,\n    district,\n    county\nFROM default.uk_price_paid
+CREATE TABLE default.uk_prices_aggs_dest\n(\n    `month` Date,\n    `min_price` SimpleAggregateFunction(`min`, UInt32),\n    `max_price` SimpleAggregateFunction(`max`, UInt32),\n    `volume` AggregateFunction(count, UInt32),\n    `avg_price` AggregateFunction(avg, UInt32)\n)\nENGINE = AggregatingMergeTree\nPRIMARY KEY `month`\nORDER BY `month`\nSETTINGS index_granularity = 8192
+CREATE MATERIALIZED VIEW default.uk_prices_aggs_view TO default.uk_prices_aggs_dest\n(\n    `month` Date,\n    `min_price` SimpleAggregateFunction(`min`, UInt32),\n    `max_price` SimpleAggregateFunction(`max`, UInt32),\n    `volume` AggregateFunction(count, UInt32),\n    `avg_price` AggregateFunction(avg, UInt32)\n)\nAS WITH toStartOfMonth(`date`) AS `month`\nSELECT\n    `month`,\n    minSimpleState(price) AS min_price,\n    maxSimpleState(price) AS max_price,\n    countState(price) AS volume,\n    avgState(price) AS avg_price\nFROM default.uk_price_paid\nGROUP BY `month`
+CREATE DICTIONARY default.uk_mortgage_rates_dict\n(\n    `date` DateTime64,\n    `variable` Decimal32(2),\n    `fixed` Decimal32(2),\n    `bank` Decimal32(2)\n)\nPRIMARY KEY `date`\nSOURCE(CLICKHOUSE(TABLE \'uk_mortgage_rates\'))\nLIFETIME(MIN 0 MAX 2628000000)\nLAYOUT(COMPLEX_KEY_HASHED())
+Settings: when_necessary & None
+Settings: user_display & None
+CREATE TABLE default.uk_price_paid\n(\n    Table String,\n    Engine String,\n    price UInt32,\n    date Date,\n    postcode1 LowCardinality(String),\n    postcode2 LowCardinality(String),\n    type Enum8(\'other\' = 0, \'terraced\' = 1, \'semi-detached\' = 2, \'detached\' = 3, \'flat\' = 4),\n    is_new UInt8,\n    duration Enum8(\'unknown\' = 0, \'freehold\' = 1, \'leasehold\' = 2),\n    addr1 String,\n    addr2 String,\n    street LowCardinality(String),\n    locality LowCardinality(String),\n    town LowCardinality(String),\n    district LowCardinality(String),\n    county LowCardinality(String),\n    INDEX county_index county TYPE set(10) GRANULARITY 1,\n    PROJECTION town_date_projection\n    (\n        SELECT \n            town,\n            date,\n            price\n        ORDER BY \n            town,\n            date\n    ),\n    PROJECTION handy_aggs_projection\n    (\n        SELECT \n            avg(price),\n            max(price),\n            sum(price)\n        GROUP BY town\n    )\n)\nENGINE = MergeTree\nORDER BY (postcode1, postcode2, date)\nSETTINGS index_granularity = 8192
 CREATE MATERIALIZED VIEW default.prices_by_year_view TO default.prices_by_year_dest\n(\n    price UInt32,\n    date Date,\n    addr1 String,\n    addr2 String,\n    street LowCardinality(String),\n    town LowCardinality(String),\n    district LowCardinality(String),\n    county LowCardinality(String)\n)\nAS SELECT\n    price,\n    date,\n    addr1,\n    addr2,\n    street,\n    town,\n    district,\n    county\nFROM default.uk_price_paid
 CREATE TABLE default.uk_prices_aggs_dest\n(\n    month Date,\n    min_price SimpleAggregateFunction(min, UInt32),\n    max_price SimpleAggregateFunction(max, UInt32),\n    volume AggregateFunction(count, UInt32),\n    avg_price AggregateFunction(avg, UInt32)\n)\nENGINE = AggregatingMergeTree\nPRIMARY KEY month\nORDER BY month\nSETTINGS index_granularity = 8192
 CREATE MATERIALIZED VIEW default.uk_prices_aggs_view TO default.uk_prices_aggs_dest\n(\n    month Date,\n    min_price SimpleAggregateFunction(min, UInt32),\n    max_price SimpleAggregateFunction(max, UInt32),\n    volume AggregateFunction(count, UInt32),\n    avg_price AggregateFunction(avg, UInt32)\n)\nAS WITH toStartOfMonth(date) AS month\nSELECT\n    month,\n    minSimpleState(price) AS min_price,\n    maxSimpleState(price) AS max_price,\n    countState(price) AS volume,\n    avgState(price) AS avg_price\nFROM default.uk_price_paid\nGROUP BY month
 CREATE DICTIONARY default.uk_mortgage_rates_dict\n(\n    date DateTime64,\n    variable Decimal32(2),\n    fixed Decimal32(2),\n    bank Decimal32(2)\n)\nPRIMARY KEY date\nSOURCE(CLICKHOUSE(TABLE \'uk_mortgage_rates\'))\nLIFETIME(MIN 0 MAX 2628000000)\nLAYOUT(COMPLEX_KEY_HASHED())
-Settings: Always & Backticks
-CREATE TABLE `default`.`uk_price_paid`\n(\n    `price` UInt32,\n    `date` Date,\n    `postcode1` LowCardinality(String),\n    `postcode2` LowCardinality(String),\n    `type` Enum8(\'other\' = 0, \'terraced\' = 1, \'semi-detached\' = 2, \'detached\' = 3, \'flat\' = 4),\n    `is_new` UInt8,\n    `duration` Enum8(\'unknown\' = 0, \'freehold\' = 1, \'leasehold\' = 2),\n    `addr1` String,\n    `addr2` String,\n    `street` LowCardinality(String),\n    `locality` LowCardinality(String),\n    `town` LowCardinality(String),\n    `district` LowCardinality(String),\n    `county` LowCardinality(String),\n    INDEX `county_index` `county` TYPE set(10) GRANULARITY 1,\n    PROJECTION `town_date_projection`\n    (\n        SELECT \n            `town`,\n            `date`,\n            `price`\n        ORDER BY \n            `town`,\n            `date`\n    ),\n    PROJECTION `handy_aggs_projection`\n    (\n        SELECT \n            avg(`price`),\n            max(`price`),\n            sum(`price`)\n        GROUP BY `town`\n    )\n)\nENGINE = MergeTree\nORDER BY (`postcode1`, `postcode2`, `date`)\nSETTINGS index_granularity = 8192
+Settings: always & Backticks
+CREATE TABLE `default`.`uk_price_paid`\n(\n    `Table` String,\n    `Engine` String,\n    `price` UInt32,\n    `date` Date,\n    `postcode1` LowCardinality(String),\n    `postcode2` LowCardinality(String),\n    `type` Enum8(\'other\' = 0, \'terraced\' = 1, \'semi-detached\' = 2, \'detached\' = 3, \'flat\' = 4),\n    `is_new` UInt8,\n    `duration` Enum8(\'unknown\' = 0, \'freehold\' = 1, \'leasehold\' = 2),\n    `addr1` String,\n    `addr2` String,\n    `street` LowCardinality(String),\n    `locality` LowCardinality(String),\n    `town` LowCardinality(String),\n    `district` LowCardinality(String),\n    `county` LowCardinality(String),\n    INDEX `county_index` `county` TYPE set(10) GRANULARITY 1,\n    PROJECTION `town_date_projection`\n    (\n        SELECT \n            `town`,\n            `date`,\n            `price`\n        ORDER BY \n            `town`,\n            `date`\n    ),\n    PROJECTION `handy_aggs_projection`\n    (\n        SELECT \n            avg(`price`),\n            max(`price`),\n            sum(`price`)\n        GROUP BY `town`\n    )\n)\nENGINE = MergeTree\nORDER BY (`postcode1`, `postcode2`, `date`)\nSETTINGS index_granularity = 8192
 CREATE MATERIALIZED VIEW `default`.`prices_by_year_view` TO default.prices_by_year_dest\n(\n    `price` UInt32,\n    `date` Date,\n    `addr1` String,\n    `addr2` String,\n    `street` LowCardinality(String),\n    `town` LowCardinality(String),\n    `district` LowCardinality(String),\n    `county` LowCardinality(String)\n)\nAS SELECT\n    `price`,\n    `date`,\n    `addr1`,\n    `addr2`,\n    `street`,\n    `town`,\n    `district`,\n    `county`\nFROM `default`.`uk_price_paid`
 CREATE TABLE `default`.`uk_prices_aggs_dest`\n(\n    `month` Date,\n    `min_price` SimpleAggregateFunction(`min`, UInt32),\n    `max_price` SimpleAggregateFunction(`max`, UInt32),\n    `volume` AggregateFunction(`count`, UInt32),\n    `avg_price` AggregateFunction(`avg`, UInt32)\n)\nENGINE = AggregatingMergeTree\nPRIMARY KEY `month`\nORDER BY `month`\nSETTINGS index_granularity = 8192
 CREATE MATERIALIZED VIEW `default`.`uk_prices_aggs_view` TO default.uk_prices_aggs_dest\n(\n    `month` Date,\n    `min_price` SimpleAggregateFunction(`min`, UInt32),\n    `max_price` SimpleAggregateFunction(`max`, UInt32),\n    `volume` AggregateFunction(`count`, UInt32),\n    `avg_price` AggregateFunction(`avg`, UInt32)\n)\nAS WITH toStartOfMonth(`date`) AS `month`\nSELECT\n    `month`,\n    minSimpleState(`price`) AS `min_price`,\n    maxSimpleState(`price`) AS `max_price`,\n    countState(`price`) AS `volume`,\n    avgState(`price`) AS `avg_price`\nFROM `default`.`uk_price_paid`\nGROUP BY `month`
 CREATE DICTIONARY `default`.`uk_mortgage_rates_dict`\n(\n    `date` DateTime64,\n    `variable` Decimal32(2),\n    `fixed` Decimal32(2),\n    `bank` Decimal32(2)\n)\nPRIMARY KEY `date`\nSOURCE(CLICKHOUSE(TABLE \'uk_mortgage_rates\'))\nLIFETIME(MIN 0 MAX 2628000000)\nLAYOUT(COMPLEX_KEY_HASHED())
-Settings: UserDisplay & Backticks
-CREATE TABLE default.uk_price_paid\n(\n    price UInt32,\n    date Date,\n    postcode1 LowCardinality(String),\n    postcode2 LowCardinality(String),\n    type Enum8(\'other\' = 0, \'terraced\' = 1, \'semi-detached\' = 2, \'detached\' = 3, \'flat\' = 4),\n    is_new UInt8,\n    duration Enum8(\'unknown\' = 0, \'freehold\' = 1, \'leasehold\' = 2),\n    addr1 String,\n    addr2 String,\n    street LowCardinality(String),\n    locality LowCardinality(String),\n    town LowCardinality(String),\n    district LowCardinality(String),\n    county LowCardinality(String),\n    INDEX county_index county TYPE set(10) GRANULARITY 1,\n    PROJECTION town_date_projection\n    (\n        SELECT \n            town,\n            date,\n            price\n        ORDER BY \n            town,\n            date\n    ),\n    PROJECTION handy_aggs_projection\n    (\n        SELECT \n            avg(price),\n            max(price),\n            sum(price)\n        GROUP BY town\n    )\n)\nENGINE = MergeTree\nORDER BY (postcode1, postcode2, date)\nSETTINGS index_granularity = 8192
+Settings: user_display & Backticks
+CREATE TABLE default.uk_price_paid\n(\n    `Table` String,\n    Engine String,\n    price UInt32,\n    date Date,\n    postcode1 LowCardinality(String),\n    postcode2 LowCardinality(String),\n    type Enum8(\'other\' = 0, \'terraced\' = 1, \'semi-detached\' = 2, \'detached\' = 3, \'flat\' = 4),\n    is_new UInt8,\n    duration Enum8(\'unknown\' = 0, \'freehold\' = 1, \'leasehold\' = 2),\n    addr1 String,\n    addr2 String,\n    street LowCardinality(String),\n    locality LowCardinality(String),\n    town LowCardinality(String),\n    district LowCardinality(String),\n    county LowCardinality(String),\n    INDEX county_index county TYPE set(10) GRANULARITY 1,\n    PROJECTION town_date_projection\n    (\n        SELECT \n            town,\n            date,\n            price\n        ORDER BY \n            town,\n            date\n    ),\n    PROJECTION handy_aggs_projection\n    (\n        SELECT \n            avg(price),\n            max(price),\n            sum(price)\n        GROUP BY town\n    )\n)\nENGINE = MergeTree\nORDER BY (postcode1, postcode2, date)\nSETTINGS index_granularity = 8192
 CREATE MATERIALIZED VIEW default.prices_by_year_view TO default.prices_by_year_dest\n(\n    price UInt32,\n    date Date,\n    addr1 String,\n    addr2 String,\n    street LowCardinality(String),\n    town LowCardinality(String),\n    district LowCardinality(String),\n    county LowCardinality(String)\n)\nAS SELECT\n    price,\n    date,\n    addr1,\n    addr2,\n    street,\n    town,\n    district,\n    county\nFROM default.uk_price_paid
 CREATE TABLE default.uk_prices_aggs_dest\n(\n    month Date,\n    min_price SimpleAggregateFunction(min, UInt32),\n    max_price SimpleAggregateFunction(max, UInt32),\n    volume AggregateFunction(count, UInt32),\n    avg_price AggregateFunction(avg, UInt32)\n)\nENGINE = AggregatingMergeTree\nPRIMARY KEY month\nORDER BY month\nSETTINGS index_granularity = 8192
 CREATE MATERIALIZED VIEW default.uk_prices_aggs_view TO default.uk_prices_aggs_dest\n(\n    month Date,\n    min_price SimpleAggregateFunction(min, UInt32),\n    max_price SimpleAggregateFunction(max, UInt32),\n    volume AggregateFunction(count, UInt32),\n    avg_price AggregateFunction(avg, UInt32)\n)\nAS WITH toStartOfMonth(date) AS month\nSELECT\n    month,\n    minSimpleState(price) AS min_price,\n    maxSimpleState(price) AS max_price,\n    countState(price) AS volume,\n    avgState(price) AS avg_price\nFROM default.uk_price_paid\nGROUP BY month
 CREATE DICTIONARY default.uk_mortgage_rates_dict\n(\n    date DateTime64,\n    variable Decimal32(2),\n    fixed Decimal32(2),\n    bank Decimal32(2)\n)\nPRIMARY KEY date\nSOURCE(CLICKHOUSE(TABLE \'uk_mortgage_rates\'))\nLIFETIME(MIN 0 MAX 2628000000)\nLAYOUT(COMPLEX_KEY_HASHED())
-Settings: WhenNecessary & Backticks
-CREATE TABLE default.uk_price_paid\n(\n    `price` UInt32,\n    `date` Date,\n    `postcode1` LowCardinality(String),\n    `postcode2` LowCardinality(String),\n    `type` Enum8(\'other\' = 0, \'terraced\' = 1, \'semi-detached\' = 2, \'detached\' = 3, \'flat\' = 4),\n    `is_new` UInt8,\n    `duration` Enum8(\'unknown\' = 0, \'freehold\' = 1, \'leasehold\' = 2),\n    `addr1` String,\n    `addr2` String,\n    `street` LowCardinality(String),\n    `locality` LowCardinality(String),\n    `town` LowCardinality(String),\n    `district` LowCardinality(String),\n    `county` LowCardinality(String),\n    INDEX county_index county TYPE set(10) GRANULARITY 1,\n    PROJECTION town_date_projection\n    (\n        SELECT \n            town,\n            date,\n            price\n        ORDER BY \n            town,\n            date\n    ),\n    PROJECTION handy_aggs_projection\n    (\n        SELECT \n            avg(price),\n            max(price),\n            sum(price)\n        GROUP BY town\n    )\n)\nENGINE = MergeTree\nORDER BY (postcode1, postcode2, date)\nSETTINGS index_granularity = 8192
-CREATE MATERIALIZED VIEW default.prices_by_year_view TO default.prices_by_year_dest\n(\n    `price` UInt32,\n    `date` Date,\n    `addr1` String,\n    `addr2` String,\n    `street` LowCardinality(String),\n    `town` LowCardinality(String),\n    `district` LowCardinality(String),\n    `county` LowCardinality(String)\n)\nAS SELECT\n    price,\n    date,\n    addr1,\n    addr2,\n    street,\n    town,\n    district,\n    county\nFROM default.uk_price_paid
-CREATE TABLE default.uk_prices_aggs_dest\n(\n    `month` Date,\n    `min_price` SimpleAggregateFunction(min, UInt32),\n    `max_price` SimpleAggregateFunction(max, UInt32),\n    `volume` AggregateFunction(count, UInt32),\n    `avg_price` AggregateFunction(avg, UInt32)\n)\nENGINE = AggregatingMergeTree\nPRIMARY KEY month\nORDER BY month\nSETTINGS index_granularity = 8192
-CREATE MATERIALIZED VIEW default.uk_prices_aggs_view TO default.uk_prices_aggs_dest\n(\n    `month` Date,\n    `min_price` SimpleAggregateFunction(min, UInt32),\n    `max_price` SimpleAggregateFunction(max, UInt32),\n    `volume` AggregateFunction(count, UInt32),\n    `avg_price` AggregateFunction(avg, UInt32)\n)\nAS WITH toStartOfMonth(date) AS month\nSELECT\n    month,\n    minSimpleState(price) AS min_price,\n    maxSimpleState(price) AS max_price,\n    countState(price) AS volume,\n    avgState(price) AS avg_price\nFROM default.uk_price_paid\nGROUP BY month
-CREATE DICTIONARY default.uk_mortgage_rates_dict\n(\n    `date` DateTime64,\n    `variable` Decimal32(2),\n    `fixed` Decimal32(2),\n    `bank` Decimal32(2)\n)\nPRIMARY KEY date\nSOURCE(CLICKHOUSE(TABLE \'uk_mortgage_rates\'))\nLIFETIME(MIN 0 MAX 2628000000)\nLAYOUT(COMPLEX_KEY_HASHED())
-Settings: Always & DoubleQuotes
-CREATE TABLE "default"."uk_price_paid"\n(\n    "price" UInt32,\n    "date" Date,\n    "postcode1" LowCardinality(String),\n    "postcode2" LowCardinality(String),\n    "type" Enum8(\'other\' = 0, \'terraced\' = 1, \'semi-detached\' = 2, \'detached\' = 3, \'flat\' = 4),\n    "is_new" UInt8,\n    "duration" Enum8(\'unknown\' = 0, \'freehold\' = 1, \'leasehold\' = 2),\n    "addr1" String,\n    "addr2" String,\n    "street" LowCardinality(String),\n    "locality" LowCardinality(String),\n    "town" LowCardinality(String),\n    "district" LowCardinality(String),\n    "county" LowCardinality(String),\n    INDEX "county_index" "county" TYPE set(10) GRANULARITY 1,\n    PROJECTION "town_date_projection"\n    (\n        SELECT \n            "town",\n            "date",\n            "price"\n        ORDER BY \n            "town",\n            "date"\n    ),\n    PROJECTION "handy_aggs_projection"\n    (\n        SELECT \n            avg("price"),\n            max("price"),\n            sum("price")\n        GROUP BY "town"\n    )\n)\nENGINE = MergeTree\nORDER BY ("postcode1", "postcode2", "date")\nSETTINGS index_granularity = 8192
+Settings: when_necessary & Backticks
+CREATE TABLE default.uk_price_paid\n(\n    `Table` String,\n    `Engine` String,\n    `price` UInt32,\n    `date` Date,\n    `postcode1` LowCardinality(String),\n    `postcode2` LowCardinality(String),\n    `type` Enum8(\'other\' = 0, \'terraced\' = 1, \'semi-detached\' = 2, \'detached\' = 3, \'flat\' = 4),\n    `is_new` UInt8,\n    `duration` Enum8(\'unknown\' = 0, \'freehold\' = 1, \'leasehold\' = 2),\n    `addr1` String,\n    `addr2` String,\n    `street` LowCardinality(String),\n    `locality` LowCardinality(String),\n    `town` LowCardinality(String),\n    `district` LowCardinality(String),\n    `county` LowCardinality(String),\n    INDEX county_index county TYPE set(10) GRANULARITY 1,\n    PROJECTION town_date_projection\n    (\n        SELECT \n            town,\n            `date`,\n            price\n        ORDER BY \n            town,\n            `date`\n    ),\n    PROJECTION handy_aggs_projection\n    (\n        SELECT \n            avg(price),\n            max(price),\n            sum(price)\n        GROUP BY town\n    )\n)\nENGINE = MergeTree\nORDER BY (postcode1, postcode2, `date`)\nSETTINGS index_granularity = 8192
+CREATE MATERIALIZED VIEW default.prices_by_year_view TO default.prices_by_year_dest\n(\n    `price` UInt32,\n    `date` Date,\n    `addr1` String,\n    `addr2` String,\n    `street` LowCardinality(String),\n    `town` LowCardinality(String),\n    `district` LowCardinality(String),\n    `county` LowCardinality(String)\n)\nAS SELECT\n    price,\n    `date`,\n    addr1,\n    addr2,\n    street,\n    town,\n    district,\n    county\nFROM default.uk_price_paid
+CREATE TABLE default.uk_prices_aggs_dest\n(\n    `month` Date,\n    `min_price` SimpleAggregateFunction(`min`, UInt32),\n    `max_price` SimpleAggregateFunction(`max`, UInt32),\n    `volume` AggregateFunction(count, UInt32),\n    `avg_price` AggregateFunction(avg, UInt32)\n)\nENGINE = AggregatingMergeTree\nPRIMARY KEY `month`\nORDER BY `month`\nSETTINGS index_granularity = 8192
+CREATE MATERIALIZED VIEW default.uk_prices_aggs_view TO default.uk_prices_aggs_dest\n(\n    `month` Date,\n    `min_price` SimpleAggregateFunction(`min`, UInt32),\n    `max_price` SimpleAggregateFunction(`max`, UInt32),\n    `volume` AggregateFunction(count, UInt32),\n    `avg_price` AggregateFunction(avg, UInt32)\n)\nAS WITH toStartOfMonth(`date`) AS `month`\nSELECT\n    `month`,\n    minSimpleState(price) AS min_price,\n    maxSimpleState(price) AS max_price,\n    countState(price) AS volume,\n    avgState(price) AS avg_price\nFROM default.uk_price_paid\nGROUP BY `month`
+CREATE DICTIONARY default.uk_mortgage_rates_dict\n(\n    `date` DateTime64,\n    `variable` Decimal32(2),\n    `fixed` Decimal32(2),\n    `bank` Decimal32(2)\n)\nPRIMARY KEY `date`\nSOURCE(CLICKHOUSE(TABLE \'uk_mortgage_rates\'))\nLIFETIME(MIN 0 MAX 2628000000)\nLAYOUT(COMPLEX_KEY_HASHED())
+Settings: always & DoubleQuotes
+CREATE TABLE "default"."uk_price_paid"\n(\n    "Table" String,\n    "Engine" String,\n    "price" UInt32,\n    "date" Date,\n    "postcode1" LowCardinality(String),\n    "postcode2" LowCardinality(String),\n    "type" Enum8(\'other\' = 0, \'terraced\' = 1, \'semi-detached\' = 2, \'detached\' = 3, \'flat\' = 4),\n    "is_new" UInt8,\n    "duration" Enum8(\'unknown\' = 0, \'freehold\' = 1, \'leasehold\' = 2),\n    "addr1" String,\n    "addr2" String,\n    "street" LowCardinality(String),\n    "locality" LowCardinality(String),\n    "town" LowCardinality(String),\n    "district" LowCardinality(String),\n    "county" LowCardinality(String),\n    INDEX "county_index" "county" TYPE set(10) GRANULARITY 1,\n    PROJECTION "town_date_projection"\n    (\n        SELECT \n            "town",\n            "date",\n            "price"\n        ORDER BY \n            "town",\n            "date"\n    ),\n    PROJECTION "handy_aggs_projection"\n    (\n        SELECT \n            avg("price"),\n            max("price"),\n            sum("price")\n        GROUP BY "town"\n    )\n)\nENGINE = MergeTree\nORDER BY ("postcode1", "postcode2", "date")\nSETTINGS index_granularity = 8192
 CREATE MATERIALIZED VIEW "default"."prices_by_year_view" TO default.prices_by_year_dest\n(\n    "price" UInt32,\n    "date" Date,\n    "addr1" String,\n    "addr2" String,\n    "street" LowCardinality(String),\n    "town" LowCardinality(String),\n    "district" LowCardinality(String),\n    "county" LowCardinality(String)\n)\nAS SELECT\n    "price",\n    "date",\n    "addr1",\n    "addr2",\n    "street",\n    "town",\n    "district",\n    "county"\nFROM "default"."uk_price_paid"
 CREATE TABLE "default"."uk_prices_aggs_dest"\n(\n    "month" Date,\n    "min_price" SimpleAggregateFunction("min", UInt32),\n    "max_price" SimpleAggregateFunction("max", UInt32),\n    "volume" AggregateFunction("count", UInt32),\n    "avg_price" AggregateFunction("avg", UInt32)\n)\nENGINE = AggregatingMergeTree\nPRIMARY KEY "month"\nORDER BY "month"\nSETTINGS index_granularity = 8192
 CREATE MATERIALIZED VIEW "default"."uk_prices_aggs_view" TO default.uk_prices_aggs_dest\n(\n    "month" Date,\n    "min_price" SimpleAggregateFunction("min", UInt32),\n    "max_price" SimpleAggregateFunction("max", UInt32),\n    "volume" AggregateFunction("count", UInt32),\n    "avg_price" AggregateFunction("avg", UInt32)\n)\nAS WITH toStartOfMonth("date") AS "month"\nSELECT\n    "month",\n    minSimpleState("price") AS "min_price",\n    maxSimpleState("price") AS "max_price",\n    countState("price") AS "volume",\n    avgState("price") AS "avg_price"\nFROM "default"."uk_price_paid"\nGROUP BY "month"
 CREATE DICTIONARY "default"."uk_mortgage_rates_dict"\n(\n    "date" DateTime64,\n    "variable" Decimal32(2),\n    "fixed" Decimal32(2),\n    "bank" Decimal32(2)\n)\nPRIMARY KEY "date"\nSOURCE(CLICKHOUSE(TABLE \'uk_mortgage_rates\'))\nLIFETIME(MIN 0 MAX 2628000000)\nLAYOUT(COMPLEX_KEY_HASHED())
-Settings: UserDisplay & DoubleQuotes
-CREATE TABLE default.uk_price_paid\n(\n    price UInt32,\n    date Date,\n    postcode1 LowCardinality(String),\n    postcode2 LowCardinality(String),\n    type Enum8(\'other\' = 0, \'terraced\' = 1, \'semi-detached\' = 2, \'detached\' = 3, \'flat\' = 4),\n    is_new UInt8,\n    duration Enum8(\'unknown\' = 0, \'freehold\' = 1, \'leasehold\' = 2),\n    addr1 String,\n    addr2 String,\n    street LowCardinality(String),\n    locality LowCardinality(String),\n    town LowCardinality(String),\n    district LowCardinality(String),\n    county LowCardinality(String),\n    INDEX county_index county TYPE set(10) GRANULARITY 1,\n    PROJECTION town_date_projection\n    (\n        SELECT \n            town,\n            date,\n            price\n        ORDER BY \n            town,\n            date\n    ),\n    PROJECTION handy_aggs_projection\n    (\n        SELECT \n            avg(price),\n            max(price),\n            sum(price)\n        GROUP BY town\n    )\n)\nENGINE = MergeTree\nORDER BY (postcode1, postcode2, date)\nSETTINGS index_granularity = 8192
+Settings: user_display & DoubleQuotes
+CREATE TABLE default.uk_price_paid\n(\n    "Table" String,\n    Engine String,\n    price UInt32,\n    date Date,\n    postcode1 LowCardinality(String),\n    postcode2 LowCardinality(String),\n    type Enum8(\'other\' = 0, \'terraced\' = 1, \'semi-detached\' = 2, \'detached\' = 3, \'flat\' = 4),\n    is_new UInt8,\n    duration Enum8(\'unknown\' = 0, \'freehold\' = 1, \'leasehold\' = 2),\n    addr1 String,\n    addr2 String,\n    street LowCardinality(String),\n    locality LowCardinality(String),\n    town LowCardinality(String),\n    district LowCardinality(String),\n    county LowCardinality(String),\n    INDEX county_index county TYPE set(10) GRANULARITY 1,\n    PROJECTION town_date_projection\n    (\n        SELECT \n            town,\n            date,\n            price\n        ORDER BY \n            town,\n            date\n    ),\n    PROJECTION handy_aggs_projection\n    (\n        SELECT \n            avg(price),\n            max(price),\n            sum(price)\n        GROUP BY town\n    )\n)\nENGINE = MergeTree\nORDER BY (postcode1, postcode2, date)\nSETTINGS index_granularity = 8192
 CREATE MATERIALIZED VIEW default.prices_by_year_view TO default.prices_by_year_dest\n(\n    price UInt32,\n    date Date,\n    addr1 String,\n    addr2 String,\n    street LowCardinality(String),\n    town LowCardinality(String),\n    district LowCardinality(String),\n    county LowCardinality(String)\n)\nAS SELECT\n    price,\n    date,\n    addr1,\n    addr2,\n    street,\n    town,\n    district,\n    county\nFROM default.uk_price_paid
 CREATE TABLE default.uk_prices_aggs_dest\n(\n    month Date,\n    min_price SimpleAggregateFunction(min, UInt32),\n    max_price SimpleAggregateFunction(max, UInt32),\n    volume AggregateFunction(count, UInt32),\n    avg_price AggregateFunction(avg, UInt32)\n)\nENGINE = AggregatingMergeTree\nPRIMARY KEY month\nORDER BY month\nSETTINGS index_granularity = 8192
 CREATE MATERIALIZED VIEW default.uk_prices_aggs_view TO default.uk_prices_aggs_dest\n(\n    month Date,\n    min_price SimpleAggregateFunction(min, UInt32),\n    max_price SimpleAggregateFunction(max, UInt32),\n    volume AggregateFunction(count, UInt32),\n    avg_price AggregateFunction(avg, UInt32)\n)\nAS WITH toStartOfMonth(date) AS month\nSELECT\n    month,\n    minSimpleState(price) AS min_price,\n    maxSimpleState(price) AS max_price,\n    countState(price) AS volume,\n    avgState(price) AS avg_price\nFROM default.uk_price_paid\nGROUP BY month
 CREATE DICTIONARY default.uk_mortgage_rates_dict\n(\n    date DateTime64,\n    variable Decimal32(2),\n    fixed Decimal32(2),\n    bank Decimal32(2)\n)\nPRIMARY KEY date\nSOURCE(CLICKHOUSE(TABLE \'uk_mortgage_rates\'))\nLIFETIME(MIN 0 MAX 2628000000)\nLAYOUT(COMPLEX_KEY_HASHED())
-Settings: WhenNecessary & DoubleQuotes
-CREATE TABLE default.uk_price_paid\n(\n    "price" UInt32,\n    "date" Date,\n    "postcode1" LowCardinality(String),\n    "postcode2" LowCardinality(String),\n    "type" Enum8(\'other\' = 0, \'terraced\' = 1, \'semi-detached\' = 2, \'detached\' = 3, \'flat\' = 4),\n    "is_new" UInt8,\n    "duration" Enum8(\'unknown\' = 0, \'freehold\' = 1, \'leasehold\' = 2),\n    "addr1" String,\n    "addr2" String,\n    "street" LowCardinality(String),\n    "locality" LowCardinality(String),\n    "town" LowCardinality(String),\n    "district" LowCardinality(String),\n    "county" LowCardinality(String),\n    INDEX county_index county TYPE set(10) GRANULARITY 1,\n    PROJECTION town_date_projection\n    (\n        SELECT \n            town,\n            date,\n            price\n        ORDER BY \n            town,\n            date\n    ),\n    PROJECTION handy_aggs_projection\n    (\n        SELECT \n            avg(price),\n            max(price),\n            sum(price)\n        GROUP BY town\n    )\n)\nENGINE = MergeTree\nORDER BY (postcode1, postcode2, date)\nSETTINGS index_granularity = 8192
-CREATE MATERIALIZED VIEW default.prices_by_year_view TO default.prices_by_year_dest\n(\n    "price" UInt32,\n    "date" Date,\n    "addr1" String,\n    "addr2" String,\n    "street" LowCardinality(String),\n    "town" LowCardinality(String),\n    "district" LowCardinality(String),\n    "county" LowCardinality(String)\n)\nAS SELECT\n    price,\n    date,\n    addr1,\n    addr2,\n    street,\n    town,\n    district,\n    county\nFROM default.uk_price_paid
-CREATE TABLE default.uk_prices_aggs_dest\n(\n    "month" Date,\n    "min_price" SimpleAggregateFunction(min, UInt32),\n    "max_price" SimpleAggregateFunction(max, UInt32),\n    "volume" AggregateFunction(count, UInt32),\n    "avg_price" AggregateFunction(avg, UInt32)\n)\nENGINE = AggregatingMergeTree\nPRIMARY KEY month\nORDER BY month\nSETTINGS index_granularity = 8192
-CREATE MATERIALIZED VIEW default.uk_prices_aggs_view TO default.uk_prices_aggs_dest\n(\n    "month" Date,\n    "min_price" SimpleAggregateFunction(min, UInt32),\n    "max_price" SimpleAggregateFunction(max, UInt32),\n    "volume" AggregateFunction(count, UInt32),\n    "avg_price" AggregateFunction(avg, UInt32)\n)\nAS WITH toStartOfMonth(date) AS month\nSELECT\n    month,\n    minSimpleState(price) AS min_price,\n    maxSimpleState(price) AS max_price,\n    countState(price) AS volume,\n    avgState(price) AS avg_price\nFROM default.uk_price_paid\nGROUP BY month
-CREATE DICTIONARY default.uk_mortgage_rates_dict\n(\n    "date" DateTime64,\n    "variable" Decimal32(2),\n    "fixed" Decimal32(2),\n    "bank" Decimal32(2)\n)\nPRIMARY KEY date\nSOURCE(CLICKHOUSE(TABLE \'uk_mortgage_rates\'))\nLIFETIME(MIN 0 MAX 2628000000)\nLAYOUT(COMPLEX_KEY_HASHED())
-Settings: Always & BackticksMySQL
-CREATE TABLE `default`.`uk_price_paid`\n(\n    `price` UInt32,\n    `date` Date,\n    `postcode1` LowCardinality(String),\n    `postcode2` LowCardinality(String),\n    `type` Enum8(\'other\' = 0, \'terraced\' = 1, \'semi-detached\' = 2, \'detached\' = 3, \'flat\' = 4),\n    `is_new` UInt8,\n    `duration` Enum8(\'unknown\' = 0, \'freehold\' = 1, \'leasehold\' = 2),\n    `addr1` String,\n    `addr2` String,\n    `street` LowCardinality(String),\n    `locality` LowCardinality(String),\n    `town` LowCardinality(String),\n    `district` LowCardinality(String),\n    `county` LowCardinality(String),\n    INDEX `county_index` `county` TYPE set(10) GRANULARITY 1,\n    PROJECTION `town_date_projection`\n    (\n        SELECT \n            `town`,\n            `date`,\n            `price`\n        ORDER BY \n            `town`,\n            `date`\n    ),\n    PROJECTION `handy_aggs_projection`\n    (\n        SELECT \n            avg(`price`),\n            max(`price`),\n            sum(`price`)\n        GROUP BY `town`\n    )\n)\nENGINE = MergeTree\nORDER BY (`postcode1`, `postcode2`, `date`)\nSETTINGS index_granularity = 8192
+Settings: when_necessary & DoubleQuotes
+CREATE TABLE default.uk_price_paid\n(\n    "Table" String,\n    "Engine" String,\n    "price" UInt32,\n    "date" Date,\n    "postcode1" LowCardinality(String),\n    "postcode2" LowCardinality(String),\n    "type" Enum8(\'other\' = 0, \'terraced\' = 1, \'semi-detached\' = 2, \'detached\' = 3, \'flat\' = 4),\n    "is_new" UInt8,\n    "duration" Enum8(\'unknown\' = 0, \'freehold\' = 1, \'leasehold\' = 2),\n    "addr1" String,\n    "addr2" String,\n    "street" LowCardinality(String),\n    "locality" LowCardinality(String),\n    "town" LowCardinality(String),\n    "district" LowCardinality(String),\n    "county" LowCardinality(String),\n    INDEX county_index county TYPE set(10) GRANULARITY 1,\n    PROJECTION town_date_projection\n    (\n        SELECT \n            town,\n            "date",\n            price\n        ORDER BY \n            town,\n            "date"\n    ),\n    PROJECTION handy_aggs_projection\n    (\n        SELECT \n            avg(price),\n            max(price),\n            sum(price)\n        GROUP BY town\n    )\n)\nENGINE = MergeTree\nORDER BY (postcode1, postcode2, "date")\nSETTINGS index_granularity = 8192
+CREATE MATERIALIZED VIEW default.prices_by_year_view TO default.prices_by_year_dest\n(\n    "price" UInt32,\n    "date" Date,\n    "addr1" String,\n    "addr2" String,\n    "street" LowCardinality(String),\n    "town" LowCardinality(String),\n    "district" LowCardinality(String),\n    "county" LowCardinality(String)\n)\nAS SELECT\n    price,\n    "date",\n    addr1,\n    addr2,\n    street,\n    town,\n    district,\n    county\nFROM default.uk_price_paid
+CREATE TABLE default.uk_prices_aggs_dest\n(\n    "month" Date,\n    "min_price" SimpleAggregateFunction("min", UInt32),\n    "max_price" SimpleAggregateFunction("max", UInt32),\n    "volume" AggregateFunction(count, UInt32),\n    "avg_price" AggregateFunction(avg, UInt32)\n)\nENGINE = AggregatingMergeTree\nPRIMARY KEY "month"\nORDER BY "month"\nSETTINGS index_granularity = 8192
+CREATE MATERIALIZED VIEW default.uk_prices_aggs_view TO default.uk_prices_aggs_dest\n(\n    "month" Date,\n    "min_price" SimpleAggregateFunction("min", UInt32),\n    "max_price" SimpleAggregateFunction("max", UInt32),\n    "volume" AggregateFunction(count, UInt32),\n    "avg_price" AggregateFunction(avg, UInt32)\n)\nAS WITH toStartOfMonth("date") AS "month"\nSELECT\n    "month",\n    minSimpleState(price) AS min_price,\n    maxSimpleState(price) AS max_price,\n    countState(price) AS volume,\n    avgState(price) AS avg_price\nFROM default.uk_price_paid\nGROUP BY "month"
+CREATE DICTIONARY default.uk_mortgage_rates_dict\n(\n    "date" DateTime64,\n    "variable" Decimal32(2),\n    "fixed" Decimal32(2),\n    "bank" Decimal32(2)\n)\nPRIMARY KEY "date"\nSOURCE(CLICKHOUSE(TABLE \'uk_mortgage_rates\'))\nLIFETIME(MIN 0 MAX 2628000000)\nLAYOUT(COMPLEX_KEY_HASHED())
+Settings: always & BackticksMySQL
+CREATE TABLE `default`.`uk_price_paid`\n(\n    `Table` String,\n    `Engine` String,\n    `price` UInt32,\n    `date` Date,\n    `postcode1` LowCardinality(String),\n    `postcode2` LowCardinality(String),\n    `type` Enum8(\'other\' = 0, \'terraced\' = 1, \'semi-detached\' = 2, \'detached\' = 3, \'flat\' = 4),\n    `is_new` UInt8,\n    `duration` Enum8(\'unknown\' = 0, \'freehold\' = 1, \'leasehold\' = 2),\n    `addr1` String,\n    `addr2` String,\n    `street` LowCardinality(String),\n    `locality` LowCardinality(String),\n    `town` LowCardinality(String),\n    `district` LowCardinality(String),\n    `county` LowCardinality(String),\n    INDEX `county_index` `county` TYPE set(10) GRANULARITY 1,\n    PROJECTION `town_date_projection`\n    (\n        SELECT \n            `town`,\n            `date`,\n            `price`\n        ORDER BY \n            `town`,\n            `date`\n    ),\n    PROJECTION `handy_aggs_projection`\n    (\n        SELECT \n            avg(`price`),\n            max(`price`),\n            sum(`price`)\n        GROUP BY `town`\n    )\n)\nENGINE = MergeTree\nORDER BY (`postcode1`, `postcode2`, `date`)\nSETTINGS index_granularity = 8192
 CREATE MATERIALIZED VIEW `default`.`prices_by_year_view` TO default.prices_by_year_dest\n(\n    `price` UInt32,\n    `date` Date,\n    `addr1` String,\n    `addr2` String,\n    `street` LowCardinality(String),\n    `town` LowCardinality(String),\n    `district` LowCardinality(String),\n    `county` LowCardinality(String)\n)\nAS SELECT\n    `price`,\n    `date`,\n    `addr1`,\n    `addr2`,\n    `street`,\n    `town`,\n    `district`,\n    `county`\nFROM `default`.`uk_price_paid`
 CREATE TABLE `default`.`uk_prices_aggs_dest`\n(\n    `month` Date,\n    `min_price` SimpleAggregateFunction(`min`, UInt32),\n    `max_price` SimpleAggregateFunction(`max`, UInt32),\n    `volume` AggregateFunction(`count`, UInt32),\n    `avg_price` AggregateFunction(`avg`, UInt32)\n)\nENGINE = AggregatingMergeTree\nPRIMARY KEY `month`\nORDER BY `month`\nSETTINGS index_granularity = 8192
 CREATE MATERIALIZED VIEW `default`.`uk_prices_aggs_view` TO default.uk_prices_aggs_dest\n(\n    `month` Date,\n    `min_price` SimpleAggregateFunction(`min`, UInt32),\n    `max_price` SimpleAggregateFunction(`max`, UInt32),\n    `volume` AggregateFunction(`count`, UInt32),\n    `avg_price` AggregateFunction(`avg`, UInt32)\n)\nAS WITH toStartOfMonth(`date`) AS `month`\nSELECT\n    `month`,\n    minSimpleState(`price`) AS `min_price`,\n    maxSimpleState(`price`) AS `max_price`,\n    countState(`price`) AS `volume`,\n    avgState(`price`) AS `avg_price`\nFROM `default`.`uk_price_paid`\nGROUP BY `month`
 CREATE DICTIONARY `default`.`uk_mortgage_rates_dict`\n(\n    `date` DateTime64,\n    `variable` Decimal32(2),\n    `fixed` Decimal32(2),\n    `bank` Decimal32(2)\n)\nPRIMARY KEY `date`\nSOURCE(CLICKHOUSE(TABLE \'uk_mortgage_rates\'))\nLIFETIME(MIN 0 MAX 2628000000)\nLAYOUT(COMPLEX_KEY_HASHED())
-Settings: UserDisplay & BackticksMySQL
-CREATE TABLE default.uk_price_paid\n(\n    price UInt32,\n    date Date,\n    postcode1 LowCardinality(String),\n    postcode2 LowCardinality(String),\n    type Enum8(\'other\' = 0, \'terraced\' = 1, \'semi-detached\' = 2, \'detached\' = 3, \'flat\' = 4),\n    is_new UInt8,\n    duration Enum8(\'unknown\' = 0, \'freehold\' = 1, \'leasehold\' = 2),\n    addr1 String,\n    addr2 String,\n    street LowCardinality(String),\n    locality LowCardinality(String),\n    town LowCardinality(String),\n    district LowCardinality(String),\n    county LowCardinality(String),\n    INDEX county_index county TYPE set(10) GRANULARITY 1,\n    PROJECTION town_date_projection\n    (\n        SELECT \n            town,\n            date,\n            price\n        ORDER BY \n            town,\n            date\n    ),\n    PROJECTION handy_aggs_projection\n    (\n        SELECT \n            avg(price),\n            max(price),\n            sum(price)\n        GROUP BY town\n    )\n)\nENGINE = MergeTree\nORDER BY (postcode1, postcode2, date)\nSETTINGS index_granularity = 8192
+Settings: user_display & BackticksMySQL
+CREATE TABLE default.uk_price_paid\n(\n    `Table` String,\n    Engine String,\n    price UInt32,\n    date Date,\n    postcode1 LowCardinality(String),\n    postcode2 LowCardinality(String),\n    type Enum8(\'other\' = 0, \'terraced\' = 1, \'semi-detached\' = 2, \'detached\' = 3, \'flat\' = 4),\n    is_new UInt8,\n    duration Enum8(\'unknown\' = 0, \'freehold\' = 1, \'leasehold\' = 2),\n    addr1 String,\n    addr2 String,\n    street LowCardinality(String),\n    locality LowCardinality(String),\n    town LowCardinality(String),\n    district LowCardinality(String),\n    county LowCardinality(String),\n    INDEX county_index county TYPE set(10) GRANULARITY 1,\n    PROJECTION town_date_projection\n    (\n        SELECT \n            town,\n            date,\n            price\n        ORDER BY \n            town,\n            date\n    ),\n    PROJECTION handy_aggs_projection\n    (\n        SELECT \n            avg(price),\n            max(price),\n            sum(price)\n        GROUP BY town\n    )\n)\nENGINE = MergeTree\nORDER BY (postcode1, postcode2, date)\nSETTINGS index_granularity = 8192
 CREATE MATERIALIZED VIEW default.prices_by_year_view TO default.prices_by_year_dest\n(\n    price UInt32,\n    date Date,\n    addr1 String,\n    addr2 String,\n    street LowCardinality(String),\n    town LowCardinality(String),\n    district LowCardinality(String),\n    county LowCardinality(String)\n)\nAS SELECT\n    price,\n    date,\n    addr1,\n    addr2,\n    street,\n    town,\n    district,\n    county\nFROM default.uk_price_paid
 CREATE TABLE default.uk_prices_aggs_dest\n(\n    month Date,\n    min_price SimpleAggregateFunction(min, UInt32),\n    max_price SimpleAggregateFunction(max, UInt32),\n    volume AggregateFunction(count, UInt32),\n    avg_price AggregateFunction(avg, UInt32)\n)\nENGINE = AggregatingMergeTree\nPRIMARY KEY month\nORDER BY month\nSETTINGS index_granularity = 8192
 CREATE MATERIALIZED VIEW default.uk_prices_aggs_view TO default.uk_prices_aggs_dest\n(\n    month Date,\n    min_price SimpleAggregateFunction(min, UInt32),\n    max_price SimpleAggregateFunction(max, UInt32),\n    volume AggregateFunction(count, UInt32),\n    avg_price AggregateFunction(avg, UInt32)\n)\nAS WITH toStartOfMonth(date) AS month\nSELECT\n    month,\n    minSimpleState(price) AS min_price,\n    maxSimpleState(price) AS max_price,\n    countState(price) AS volume,\n    avgState(price) AS avg_price\nFROM default.uk_price_paid\nGROUP BY month
 CREATE DICTIONARY default.uk_mortgage_rates_dict\n(\n    date DateTime64,\n    variable Decimal32(2),\n    fixed Decimal32(2),\n    bank Decimal32(2)\n)\nPRIMARY KEY date\nSOURCE(CLICKHOUSE(TABLE \'uk_mortgage_rates\'))\nLIFETIME(MIN 0 MAX 2628000000)\nLAYOUT(COMPLEX_KEY_HASHED())
-Settings: WhenNecessary & BackticksMySQL
-CREATE TABLE default.uk_price_paid\n(\n    `price` UInt32,\n    `date` Date,\n    `postcode1` LowCardinality(String),\n    `postcode2` LowCardinality(String),\n    `type` Enum8(\'other\' = 0, \'terraced\' = 1, \'semi-detached\' = 2, \'detached\' = 3, \'flat\' = 4),\n    `is_new` UInt8,\n    `duration` Enum8(\'unknown\' = 0, \'freehold\' = 1, \'leasehold\' = 2),\n    `addr1` String,\n    `addr2` String,\n    `street` LowCardinality(String),\n    `locality` LowCardinality(String),\n    `town` LowCardinality(String),\n    `district` LowCardinality(String),\n    `county` LowCardinality(String),\n    INDEX county_index county TYPE set(10) GRANULARITY 1,\n    PROJECTION town_date_projection\n    (\n        SELECT \n            town,\n            date,\n            price\n        ORDER BY \n            town,\n            date\n    ),\n    PROJECTION handy_aggs_projection\n    (\n        SELECT \n            avg(price),\n            max(price),\n            sum(price)\n        GROUP BY town\n    )\n)\nENGINE = MergeTree\nORDER BY (postcode1, postcode2, date)\nSETTINGS index_granularity = 8192
-CREATE MATERIALIZED VIEW default.prices_by_year_view TO default.prices_by_year_dest\n(\n    `price` UInt32,\n    `date` Date,\n    `addr1` String,\n    `addr2` String,\n    `street` LowCardinality(String),\n    `town` LowCardinality(String),\n    `district` LowCardinality(String),\n    `county` LowCardinality(String)\n)\nAS SELECT\n    price,\n    date,\n    addr1,\n    addr2,\n    street,\n    town,\n    district,\n    county\nFROM default.uk_price_paid
-CREATE TABLE default.uk_prices_aggs_dest\n(\n    `month` Date,\n    `min_price` SimpleAggregateFunction(min, UInt32),\n    `max_price` SimpleAggregateFunction(max, UInt32),\n    `volume` AggregateFunction(count, UInt32),\n    `avg_price` AggregateFunction(avg, UInt32)\n)\nENGINE = AggregatingMergeTree\nPRIMARY KEY month\nORDER BY month\nSETTINGS index_granularity = 8192
-CREATE MATERIALIZED VIEW default.uk_prices_aggs_view TO default.uk_prices_aggs_dest\n(\n    `month` Date,\n    `min_price` SimpleAggregateFunction(min, UInt32),\n    `max_price` SimpleAggregateFunction(max, UInt32),\n    `volume` AggregateFunction(count, UInt32),\n    `avg_price` AggregateFunction(avg, UInt32)\n)\nAS WITH toStartOfMonth(date) AS month\nSELECT\n    month,\n    minSimpleState(price) AS min_price,\n    maxSimpleState(price) AS max_price,\n    countState(price) AS volume,\n    avgState(price) AS avg_price\nFROM default.uk_price_paid\nGROUP BY month
-CREATE DICTIONARY default.uk_mortgage_rates_dict\n(\n    `date` DateTime64,\n    `variable` Decimal32(2),\n    `fixed` Decimal32(2),\n    `bank` Decimal32(2)\n)\nPRIMARY KEY date\nSOURCE(CLICKHOUSE(TABLE \'uk_mortgage_rates\'))\nLIFETIME(MIN 0 MAX 2628000000)\nLAYOUT(COMPLEX_KEY_HASHED())
+Settings: when_necessary & BackticksMySQL
+CREATE TABLE default.uk_price_paid\n(\n    `Table` String,\n    `Engine` String,\n    `price` UInt32,\n    `date` Date,\n    `postcode1` LowCardinality(String),\n    `postcode2` LowCardinality(String),\n    `type` Enum8(\'other\' = 0, \'terraced\' = 1, \'semi-detached\' = 2, \'detached\' = 3, \'flat\' = 4),\n    `is_new` UInt8,\n    `duration` Enum8(\'unknown\' = 0, \'freehold\' = 1, \'leasehold\' = 2),\n    `addr1` String,\n    `addr2` String,\n    `street` LowCardinality(String),\n    `locality` LowCardinality(String),\n    `town` LowCardinality(String),\n    `district` LowCardinality(String),\n    `county` LowCardinality(String),\n    INDEX county_index county TYPE set(10) GRANULARITY 1,\n    PROJECTION town_date_projection\n    (\n        SELECT \n            town,\n            `date`,\n            price\n        ORDER BY \n            town,\n            `date`\n    ),\n    PROJECTION handy_aggs_projection\n    (\n        SELECT \n            avg(price),\n            max(price),\n            sum(price)\n        GROUP BY town\n    )\n)\nENGINE = MergeTree\nORDER BY (postcode1, postcode2, `date`)\nSETTINGS index_granularity = 8192
+CREATE MATERIALIZED VIEW default.prices_by_year_view TO default.prices_by_year_dest\n(\n    `price` UInt32,\n    `date` Date,\n    `addr1` String,\n    `addr2` String,\n    `street` LowCardinality(String),\n    `town` LowCardinality(String),\n    `district` LowCardinality(String),\n    `county` LowCardinality(String)\n)\nAS SELECT\n    price,\n    `date`,\n    addr1,\n    addr2,\n    street,\n    town,\n    district,\n    county\nFROM default.uk_price_paid
+CREATE TABLE default.uk_prices_aggs_dest\n(\n    `month` Date,\n    `min_price` SimpleAggregateFunction(`min`, UInt32),\n    `max_price` SimpleAggregateFunction(`max`, UInt32),\n    `volume` AggregateFunction(count, UInt32),\n    `avg_price` AggregateFunction(avg, UInt32)\n)\nENGINE = AggregatingMergeTree\nPRIMARY KEY `month`\nORDER BY `month`\nSETTINGS index_granularity = 8192
+CREATE MATERIALIZED VIEW default.uk_prices_aggs_view TO default.uk_prices_aggs_dest\n(\n    `month` Date,\n    `min_price` SimpleAggregateFunction(`min`, UInt32),\n    `max_price` SimpleAggregateFunction(`max`, UInt32),\n    `volume` AggregateFunction(count, UInt32),\n    `avg_price` AggregateFunction(avg, UInt32)\n)\nAS WITH toStartOfMonth(`date`) AS `month`\nSELECT\n    `month`,\n    minSimpleState(price) AS min_price,\n    maxSimpleState(price) AS max_price,\n    countState(price) AS volume,\n    avgState(price) AS avg_price\nFROM default.uk_price_paid\nGROUP BY `month`
+CREATE DICTIONARY default.uk_mortgage_rates_dict\n(\n    `date` DateTime64,\n    `variable` Decimal32(2),\n    `fixed` Decimal32(2),\n    `bank` Decimal32(2)\n)\nPRIMARY KEY `date`\nSOURCE(CLICKHOUSE(TABLE \'uk_mortgage_rates\'))\nLIFETIME(MIN 0 MAX 2628000000)\nLAYOUT(COMPLEX_KEY_HASHED())

tests/queries/0_stateless/03230_output_format_identifier_quoting_style.sql

@@ -10,6 +10,8 @@ DROP TABLE IF EXISTS uk_price_paid;
 
 CREATE TABLE uk_price_paid
 (
+    Table String,   -- column name is a keyword `table`
+    Engine String,  -- column name is a keyword `ENGINE`
     price UInt32,
     date Date,
     postcode1 LowCardinality(String),
@@ -48,6 +50,8 @@ ENGINE = MergeTree
 ORDER BY (postcode1, postcode2, date);
 
 CREATE TABLE prices_by_year_dest (
+    Table String,   -- column name is a keyword `table`
+    Engine String,  -- column name is a keyword `ENGINE`
     price UInt32,
     date Date,
     addr1 String,
@@ -133,301 +137,301 @@ SHOW CREATE VIEW uk_prices_aggs_view;
 SHOW CREATE DICTIONARY uk_mortgage_rates_dict;
 
 
--- Show tables, views, dictionaries with output_format_identifier_quoting_rule='WhenNecessary', output_format_identifier_quoting_style='None'
-SELECT('Settings: WhenNecessary & None');
+-- Show tables, views, dictionaries with output_format_identifier_quoting_rule='when_necessary', output_format_identifier_quoting_style='None'
+SELECT('Settings: when_necessary & None');
 SHOW CREATE TABLE uk_price_paid
 SETTINGS
-    output_format_identifier_quoting_rule='WhenNecessary',
+    output_format_identifier_quoting_rule='when_necessary',
     output_format_identifier_quoting_style='None'; -- { serverError BAD_ARGUMENTS}
 
 SHOW CREATE VIEW prices_by_year_view
 SETTINGS
-    output_format_identifier_quoting_rule='WhenNecessary',
+    output_format_identifier_quoting_rule='when_necessary',
     output_format_identifier_quoting_style='None'; -- { serverError BAD_ARGUMENTS}
 
 SHOW CREATE uk_prices_aggs_dest
 SETTINGS
-    output_format_identifier_quoting_rule='WhenNecessary',
+    output_format_identifier_quoting_rule='when_necessary',
     output_format_identifier_quoting_style='None'; -- { serverError BAD_ARGUMENTS}
 
 SHOW CREATE VIEW uk_prices_aggs_view
 SETTINGS
-    output_format_identifier_quoting_rule='WhenNecessary',
+    output_format_identifier_quoting_rule='when_necessary',
     output_format_identifier_quoting_style='None'; -- { serverError BAD_ARGUMENTS}
 
 SHOW CREATE DICTIONARY uk_mortgage_rates_dict
 SETTINGS
-    output_format_identifier_quoting_rule='WhenNecessary',
+    output_format_identifier_quoting_rule='when_necessary',
     output_format_identifier_quoting_style='None'; -- { serverError BAD_ARGUMENTS}
 
--- Show tables, views, dictionaries with output_format_identifier_quoting_rule='UserDisplay', output_format_identifier_quoting_style='None'
-SELECT('Settings: UserDisplay & None');
+-- Show tables, views, dictionaries with output_format_identifier_quoting_rule='user_display', output_format_identifier_quoting_style='None'
+SELECT('Settings: user_display & None');
 SHOW CREATE TABLE uk_price_paid
 SETTINGS
-    output_format_identifier_quoting_rule='UserDisplay',
+    output_format_identifier_quoting_rule='user_display',
     output_format_identifier_quoting_style='None';
 
 SHOW CREATE VIEW prices_by_year_view
 SETTINGS
-    output_format_identifier_quoting_rule='UserDisplay',
+    output_format_identifier_quoting_rule='user_display',
     output_format_identifier_quoting_style='None';
 
 SHOW CREATE uk_prices_aggs_dest
 SETTINGS
-    output_format_identifier_quoting_rule='UserDisplay',
+    output_format_identifier_quoting_rule='user_display',
     output_format_identifier_quoting_style='None';
 
 SHOW CREATE VIEW uk_prices_aggs_view
 SETTINGS
-    output_format_identifier_quoting_rule='UserDisplay',
+    output_format_identifier_quoting_rule='user_display',
     output_format_identifier_quoting_style='None';
 
 SHOW CREATE DICTIONARY uk_mortgage_rates_dict
 SETTINGS
-    output_format_identifier_quoting_rule='UserDisplay',
+    output_format_identifier_quoting_rule='user_display',
     output_format_identifier_quoting_style='None';
 
--- Show tables, views, dictionaries with output_format_identifier_quoting_rule='Always', output_format_identifier_quoting_style='Backticks'
-SELECT('Settings: Always & Backticks');
+-- Show tables, views, dictionaries with output_format_identifier_quoting_rule='always', output_format_identifier_quoting_style='Backticks'
+SELECT('Settings: always & Backticks');
 SHOW CREATE TABLE uk_price_paid
 SETTINGS
-    output_format_identifier_quoting_rule='Always',
+    output_format_identifier_quoting_rule='always',
     output_format_identifier_quoting_style='Backticks';
 
 SHOW CREATE VIEW prices_by_year_view
 SETTINGS
-    output_format_identifier_quoting_rule='Always',
+    output_format_identifier_quoting_rule='always',
     output_format_identifier_quoting_style='Backticks';
 
 SHOW CREATE uk_prices_aggs_dest
 SETTINGS
-    output_format_identifier_quoting_rule='Always',
+    output_format_identifier_quoting_rule='always',
     output_format_identifier_quoting_style='Backticks';
 
 SHOW CREATE VIEW uk_prices_aggs_view
 SETTINGS
-    output_format_identifier_quoting_rule='Always',
+    output_format_identifier_quoting_rule='always',
     output_format_identifier_quoting_style='Backticks';
 
 SHOW CREATE DICTIONARY uk_mortgage_rates_dict
 SETTINGS
-    output_format_identifier_quoting_rule='Always',
+    output_format_identifier_quoting_rule='always',
     output_format_identifier_quoting_style='Backticks';
 
--- Show tables, views, dictionaries with output_format_identifier_quoting_rule='UserDisplay', output_format_identifier_quoting_style='Backticks'
-SELECT('Settings: UserDisplay & Backticks');
+-- Show tables, views, dictionaries with output_format_identifier_quoting_rule='user_display', output_format_identifier_quoting_style='Backticks'
+SELECT('Settings: user_display & Backticks');
 SHOW CREATE TABLE uk_price_paid
 SETTINGS
-    output_format_identifier_quoting_rule='UserDisplay',
+    output_format_identifier_quoting_rule='user_display',
     output_format_identifier_quoting_style='Backticks';
 
 SHOW CREATE VIEW prices_by_year_view
 SETTINGS
-    output_format_identifier_quoting_rule='UserDisplay',
+    output_format_identifier_quoting_rule='user_display',
     output_format_identifier_quoting_style='Backticks';
 
 SHOW CREATE uk_prices_aggs_dest
 SETTINGS
-    output_format_identifier_quoting_rule='UserDisplay',
+    output_format_identifier_quoting_rule='user_display',
     output_format_identifier_quoting_style='Backticks';
 
 SHOW CREATE VIEW uk_prices_aggs_view
 SETTINGS
-    output_format_identifier_quoting_rule='UserDisplay',
+    output_format_identifier_quoting_rule='user_display',
     output_format_identifier_quoting_style='Backticks';
 
 SHOW CREATE DICTIONARY uk_mortgage_rates_dict
 SETTINGS
-    output_format_identifier_quoting_rule='UserDisplay',
+    output_format_identifier_quoting_rule='user_display',
     output_format_identifier_quoting_style='Backticks';
 
--- Show tables, views, dictionaries with output_format_identifier_quoting_rule='WhenNecessary', output_format_identifier_quoting_style='Backticks'
-SELECT('Settings: WhenNecessary & Backticks');
+-- Show tables, views, dictionaries with output_format_identifier_quoting_rule='when_necessary', output_format_identifier_quoting_style='Backticks'
+SELECT('Settings: when_necessary & Backticks');
 SHOW CREATE TABLE uk_price_paid
 SETTINGS
-    output_format_identifier_quoting_rule='WhenNecessary',
+    output_format_identifier_quoting_rule='when_necessary',
     output_format_identifier_quoting_style='Backticks';
 
 SHOW CREATE VIEW prices_by_year_view
 SETTINGS
-    output_format_identifier_quoting_rule='WhenNecessary',
+    output_format_identifier_quoting_rule='when_necessary',
     output_format_identifier_quoting_style='Backticks';
 
 SHOW CREATE uk_prices_aggs_dest
 SETTINGS
-    output_format_identifier_quoting_rule='WhenNecessary',
+    output_format_identifier_quoting_rule='when_necessary',
     output_format_identifier_quoting_style='Backticks';
 
 SHOW CREATE VIEW uk_prices_aggs_view
 SETTINGS
-    output_format_identifier_quoting_rule='WhenNecessary',
+    output_format_identifier_quoting_rule='when_necessary',
     output_format_identifier_quoting_style='Backticks';
 
 SHOW CREATE DICTIONARY uk_mortgage_rates_dict
 SETTINGS
-    output_format_identifier_quoting_rule='WhenNecessary',
+    output_format_identifier_quoting_rule='when_necessary',
     output_format_identifier_quoting_style='Backticks';
 
--- Show tables, views, dictionaries with output_format_identifier_quoting_rule='Always', output_format_identifier_quoting_style='DoubleQuotes'
-SELECT('Settings: Always & DoubleQuotes');
+-- Show tables, views, dictionaries with output_format_identifier_quoting_rule='always', output_format_identifier_quoting_style='DoubleQuotes'
+SELECT('Settings: always & DoubleQuotes');
 SHOW CREATE TABLE uk_price_paid
 SETTINGS
-    output_format_identifier_quoting_rule='Always',
+    output_format_identifier_quoting_rule='always',
     output_format_identifier_quoting_style='DoubleQuotes';
 
 SHOW CREATE VIEW prices_by_year_view
 SETTINGS
-    output_format_identifier_quoting_rule='Always',
+    output_format_identifier_quoting_rule='always',
     output_format_identifier_quoting_style='DoubleQuotes';
 
 SHOW CREATE uk_prices_aggs_dest
 SETTINGS
-    output_format_identifier_quoting_rule='Always',
+    output_format_identifier_quoting_rule='always',
     output_format_identifier_quoting_style='DoubleQuotes';
 
 SHOW CREATE VIEW uk_prices_aggs_view
 SETTINGS
-    output_format_identifier_quoting_rule='Always',
+    output_format_identifier_quoting_rule='always',
     output_format_identifier_quoting_style='DoubleQuotes';
 
 SHOW CREATE DICTIONARY uk_mortgage_rates_dict
 SETTINGS
-    output_format_identifier_quoting_rule='Always',
+    output_format_identifier_quoting_rule='always',
     output_format_identifier_quoting_style='DoubleQuotes';
 
--- Show tables, views, dictionaries with output_format_identifier_quoting_rule='UserDisplay', output_format_identifier_quoting_style='DoubleQuotes'
-SELECT('Settings: UserDisplay & DoubleQuotes');
+-- Show tables, views, dictionaries with output_format_identifier_quoting_rule='user_display', output_format_identifier_quoting_style='DoubleQuotes'
+SELECT('Settings: user_display & DoubleQuotes');
 SHOW CREATE TABLE uk_price_paid
 SETTINGS
-    output_format_identifier_quoting_rule='UserDisplay',
+    output_format_identifier_quoting_rule='user_display',
     output_format_identifier_quoting_style='DoubleQuotes';
 
 SHOW CREATE VIEW prices_by_year_view
 SETTINGS
-    output_format_identifier_quoting_rule='UserDisplay',
+    output_format_identifier_quoting_rule='user_display',
     output_format_identifier_quoting_style='DoubleQuotes';
 
 SHOW CREATE uk_prices_aggs_dest
 SETTINGS
-    output_format_identifier_quoting_rule='UserDisplay',
+    output_format_identifier_quoting_rule='user_display',
     output_format_identifier_quoting_style='DoubleQuotes';
 
 SHOW CREATE VIEW uk_prices_aggs_view
 SETTINGS
-    output_format_identifier_quoting_rule='UserDisplay',
+    output_format_identifier_quoting_rule='user_display',
     output_format_identifier_quoting_style='DoubleQuotes';
 
 SHOW CREATE DICTIONARY uk_mortgage_rates_dict
 SETTINGS
-    output_format_identifier_quoting_rule='UserDisplay',
+    output_format_identifier_quoting_rule='user_display',
     output_format_identifier_quoting_style='DoubleQuotes';
 
--- Show tables, views, dictionaries with output_format_identifier_quoting_rule='WhenNecessary', output_format_identifier_quoting_style='DoubleQuotes'
-SELECT('Settings: WhenNecessary & DoubleQuotes');
+-- Show tables, views, dictionaries with output_format_identifier_quoting_rule='when_necessary', output_format_identifier_quoting_style='DoubleQuotes'
+SELECT('Settings: when_necessary & DoubleQuotes');
 SHOW CREATE TABLE uk_price_paid
 SETTINGS
-    output_format_identifier_quoting_rule='WhenNecessary',
+    output_format_identifier_quoting_rule='when_necessary',
     output_format_identifier_quoting_style='DoubleQuotes';
 
 SHOW CREATE VIEW prices_by_year_view
 SETTINGS
-    output_format_identifier_quoting_rule='WhenNecessary',
+    output_format_identifier_quoting_rule='when_necessary',
     output_format_identifier_quoting_style='DoubleQuotes';
 
 SHOW CREATE uk_prices_aggs_dest
 SETTINGS
-    output_format_identifier_quoting_rule='WhenNecessary',
+    output_format_identifier_quoting_rule='when_necessary',
     output_format_identifier_quoting_style='DoubleQuotes';
 
 SHOW CREATE VIEW uk_prices_aggs_view
 SETTINGS
-    output_format_identifier_quoting_rule='WhenNecessary',
+    output_format_identifier_quoting_rule='when_necessary',
     output_format_identifier_quoting_style='DoubleQuotes';
 
 SHOW CREATE DICTIONARY uk_mortgage_rates_dict
 SETTINGS
-    output_format_identifier_quoting_rule='WhenNecessary',
+    output_format_identifier_quoting_rule='when_necessary',
     output_format_identifier_quoting_style='DoubleQuotes';
 
--- Show tables, views, dictionaries with output_format_identifier_quoting_rule='Always', output_format_identifier_quoting_style='BackticksMySQL'
-SELECT('Settings: Always & BackticksMySQL');
+-- Show tables, views, dictionaries with output_format_identifier_quoting_rule='always', output_format_identifier_quoting_style='BackticksMySQL'
+SELECT('Settings: always & BackticksMySQL');
 SHOW CREATE TABLE uk_price_paid
 SETTINGS
-    output_format_identifier_quoting_rule='Always',
+    output_format_identifier_quoting_rule='always',
     output_format_identifier_quoting_style='BackticksMySQL';
 
 SHOW CREATE VIEW prices_by_year_view
 SETTINGS
-    output_format_identifier_quoting_rule='Always',
+    output_format_identifier_quoting_rule='always',
     output_format_identifier_quoting_style='BackticksMySQL';
 
 SHOW CREATE uk_prices_aggs_dest
 SETTINGS
-    output_format_identifier_quoting_rule='Always',
+    output_format_identifier_quoting_rule='always',
     output_format_identifier_quoting_style='BackticksMySQL';
 
 SHOW CREATE VIEW uk_prices_aggs_view
 SETTINGS
-    output_format_identifier_quoting_rule='Always',
+    output_format_identifier_quoting_rule='always',
     output_format_identifier_quoting_style='BackticksMySQL';
 
 SHOW CREATE DICTIONARY uk_mortgage_rates_dict
 SETTINGS
-    output_format_identifier_quoting_rule='Always',
+    output_format_identifier_quoting_rule='always',
     output_format_identifier_quoting_style='BackticksMySQL';
 
--- Show tables, views, dictionaries with output_format_identifier_quoting_rule='UserDisplay', output_format_identifier_quoting_style='BackticksMySQL'
-SELECT('Settings: UserDisplay & BackticksMySQL');
+-- Show tables, views, dictionaries with output_format_identifier_quoting_rule='user_display', output_format_identifier_quoting_style='BackticksMySQL'
+SELECT('Settings: user_display & BackticksMySQL');
 SHOW CREATE TABLE uk_price_paid
 SETTINGS
-    output_format_identifier_quoting_rule='UserDisplay',
+    output_format_identifier_quoting_rule='user_display',
     output_format_identifier_quoting_style='BackticksMySQL';
 
 SHOW CREATE VIEW prices_by_year_view
 SETTINGS
-    output_format_identifier_quoting_rule='UserDisplay',
+    output_format_identifier_quoting_rule='user_display',
     output_format_identifier_quoting_style='BackticksMySQL';
 
 SHOW CREATE uk_prices_aggs_dest
 SETTINGS
-    output_format_identifier_quoting_rule='UserDisplay',
+    output_format_identifier_quoting_rule='user_display',
     output_format_identifier_quoting_style='BackticksMySQL';
 
 SHOW CREATE VIEW uk_prices_aggs_view
 SETTINGS
-    output_format_identifier_quoting_rule='UserDisplay',
+    output_format_identifier_quoting_rule='user_display',
     output_format_identifier_quoting_style='BackticksMySQL';
 
 SHOW CREATE DICTIONARY uk_mortgage_rates_dict
 SETTINGS
-    output_format_identifier_quoting_rule='UserDisplay',
+    output_format_identifier_quoting_rule='user_display',
     output_format_identifier_quoting_style='BackticksMySQL';
 
--- Show tables, views, dictionaries with output_format_identifier_quoting_rule='WhenNecessary', output_format_identifier_quoting_style='BackticksMySQL'
-SELECT('Settings: WhenNecessary & BackticksMySQL');
+-- Show tables, views, dictionaries with output_format_identifier_quoting_rule='when_necessary', output_format_identifier_quoting_style='BackticksMySQL'
+SELECT('Settings: when_necessary & BackticksMySQL');
 SHOW CREATE TABLE uk_price_paid
 SETTINGS
-    output_format_identifier_quoting_rule='WhenNecessary',
+    output_format_identifier_quoting_rule='when_necessary',
     output_format_identifier_quoting_style='BackticksMySQL';
 
 SHOW CREATE VIEW prices_by_year_view
 SETTINGS
-    output_format_identifier_quoting_rule='WhenNecessary',
+    output_format_identifier_quoting_rule='when_necessary',
     output_format_identifier_quoting_style='BackticksMySQL';
 
 SHOW CREATE uk_prices_aggs_dest
 SETTINGS
-    output_format_identifier_quoting_rule='WhenNecessary',
+    output_format_identifier_quoting_rule='when_necessary',
     output_format_identifier_quoting_style='BackticksMySQL';
 
 SHOW CREATE VIEW uk_prices_aggs_view
 SETTINGS
-    output_format_identifier_quoting_rule='WhenNecessary',
+    output_format_identifier_quoting_rule='when_necessary',
     output_format_identifier_quoting_style='BackticksMySQL';
 
 SHOW CREATE DICTIONARY uk_mortgage_rates_dict
 SETTINGS
-    output_format_identifier_quoting_rule='WhenNecessary',
+    output_format_identifier_quoting_rule='when_necessary',
     output_format_identifier_quoting_style='BackticksMySQL';
 
 DROP DICTIONARY uk_mortgage_rates_dict;