diff --git a/src/Storages/System/InformationSchema/columns.sql b/src/Storages/System/InformationSchema/columns.sql deleted file mode 100644 index f95899d1cbf..00000000000 --- a/src/Storages/System/InformationSchema/columns.sql +++ /dev/null @@ -1,105 +0,0 @@ -ATTACH VIEW columns -( - `table_catalog` String, - `table_schema` String, - `table_name` String, - `column_name` String, - `ordinal_position` UInt64, - `column_default` String, - `is_nullable` String, - `data_type` String, - `character_maximum_length` Nullable(UInt64), - `character_octet_length` Nullable(UInt64), - `numeric_precision` Nullable(UInt64), - `numeric_precision_radix` Nullable(UInt64), - `numeric_scale` Nullable(UInt64), - `datetime_precision` Nullable(UInt64), - `character_set_catalog` Nullable(String), - `character_set_schema` Nullable(String), - `character_set_name` Nullable(String), - `collation_catalog` Nullable(String), - `collation_schema` Nullable(String), - `collation_name` Nullable(String), - `domain_catalog` Nullable(String), - `domain_schema` Nullable(String), - `domain_name` Nullable(String), - `column_comment` String, - `column_type` String, - `TABLE_CATALOG` String, - `TABLE_SCHEMA` String, - `TABLE_NAME` String, - `COLUMN_NAME` String, - `ORDINAL_POSITION` UInt64, - `COLUMN_DEFAULT` String, - `IS_NULLABLE` String, - `DATA_TYPE` String, - `CHARACTER_MAXIMUM_LENGTH` Nullable(UInt64), - `CHARACTER_OCTET_LENGTH` Nullable(UInt64), - `NUMERIC_PRECISION` Nullable(UInt64), - `NUMERIC_PRECISION_RADIX` Nullable(UInt64), - `NUMERIC_SCALE` Nullable(UInt64), - `DATETIME_PRECISION` Nullable(UInt64), - `CHARACTER_SET_CATALOG` Nullable(String), - `CHARACTER_SET_SCHEMA` Nullable(String), - `CHARACTER_SET_NAME` Nullable(String), - `COLLATION_CATALOG` Nullable(String), - `COLLATION_SCHEMA` Nullable(String), - `COLLATION_NAME` Nullable(String), - `DOMAIN_CATALOG` Nullable(String), - `DOMAIN_SCHEMA` Nullable(String), - `DOMAIN_NAME` Nullable(String), - `COLUMN_COMMENT` String, - `COLUMN_TYPE` String -) AS -SELECT - database AS table_catalog, - database AS table_schema, - table AS table_name, - name AS column_name, - position AS ordinal_position, - default_expression AS column_default, - type LIKE 'Nullable(%)' AS is_nullable, - type AS data_type, - character_octet_length AS character_maximum_length, - character_octet_length, - numeric_precision, - numeric_precision_radix, - numeric_scale, - datetime_precision, - NULL AS character_set_catalog, - NULL AS character_set_schema, - NULL AS character_set_name, - NULL AS collation_catalog, - NULL AS collation_schema, - NULL AS collation_name, - NULL AS domain_catalog, - NULL AS domain_schema, - NULL AS domain_name, - comment AS column_comment, - type AS column_type, - table_catalog AS TABLE_CATALOG, - table_schema AS TABLE_SCHEMA, - table_name AS TABLE_NAME, - column_name AS COLUMN_NAME, - ordinal_position AS ORDINAL_POSITION, - column_default AS COLUMN_DEFAULT, - is_nullable AS IS_NULLABLE, - data_type AS DATA_TYPE, - character_maximum_length AS CHARACTER_MAXIMUM_LENGTH, - character_octet_length AS CHARACTER_OCTET_LENGTH, - numeric_precision AS NUMERIC_PRECISION, - numeric_precision_radix AS NUMERIC_PRECISION_RADIX, - numeric_scale AS NUMERIC_SCALE, - datetime_precision AS DATETIME_PRECISION, - character_set_catalog AS CHARACTER_SET_CATALOG, - character_set_schema AS CHARACTER_SET_SCHEMA, - character_set_name AS CHARACTER_SET_NAME, - collation_catalog AS COLLATION_CATALOG, - collation_schema AS COLLATION_SCHEMA, - collation_name AS COLLATION_NAME, - domain_catalog AS DOMAIN_CATALOG, - domain_schema AS DOMAIN_SCHEMA, - domain_name AS DOMAIN_NAME, - column_comment AS COLUMN_COMMENT, - column_type AS COLUMN_TYPE -FROM system.columns diff --git a/src/Storages/System/InformationSchema/key_column_usage.sql b/src/Storages/System/InformationSchema/key_column_usage.sql deleted file mode 100644 index 32152886706..00000000000 --- a/src/Storages/System/InformationSchema/key_column_usage.sql +++ /dev/null @@ -1,54 +0,0 @@ -ATTACH VIEW key_column_usage - ( - `constraint_catalog` String, - `constraint_schema` String, - `constraint_name` Nullable(String), - `table_catalog` String, - `table_schema` String, - `table_name` String, - `column_name` Nullable(String), - `ordinal_position` UInt32, - `position_in_unique_constraint` Nullable(UInt32), - `referenced_table_schema` Nullable(String), - `referenced_table_name` Nullable(String), - `referenced_column_name` Nullable(String), - `CONSTRAINT_CATALOG` Nullable(String), - `CONSTRAINT_SCHEMA` Nullable(String), - `CONSTRAINT_NAME` Nullable(String), - `TABLE_CATALOG` String, - `TABLE_SCHEMA` String, - `TABLE_NAME` String, - `COLUMN_NAME` Nullable(String), - `ORDINAL_POSITION` UInt32, - `POSITION_IN_UNIQUE_CONSTRAINT` Nullable(UInt32), - `REFERENCED_TABLE_SCHEMA` Nullable(String), - `REFERENCED_TABLE_NAME` Nullable(String), - `REFERENCED_COLUMN_NAME` Nullable(String) -) AS -SELECT - 'def' AS constraint_catalog, - database AS constraint_schema, - 'PRIMARY' AS constraint_name, - 'def' AS table_catalog, - database AS table_schema, - table AS table_name, - name AS column_name, - 1 AS ordinal_position, - NULL AS position_in_unique_constraint, - NULL AS referenced_table_schema, - NULL AS referenced_table_name, - NULL AS referenced_column_name, - constraint_catalog AS CONSTRAINT_CATALOG, - constraint_schema AS CONSTRAINT_SCHEMA, - constraint_name AS CONSTRAINT_NAME, - table_catalog AS TABLE_CATALOG, - table_schema AS TABLE_SCHEMA, - table_name AS TABLE_NAME, - column_name AS COLUMN_NAME, - ordinal_position AS ORDINAL_POSITION, - position_in_unique_constraint AS POSITION_IN_UNIQUE_CONSTRAINT, - referenced_table_schema AS REFERENCED_TABLE_SCHEMA, - referenced_table_name AS REFERENCED_TABLE_NAME, - referenced_column_name AS REFERENCED_COLUMN_NAME -FROM system.columns -WHERE is_in_primary_key; diff --git a/src/Storages/System/InformationSchema/referential_constraints.sql b/src/Storages/System/InformationSchema/referential_constraints.sql deleted file mode 100644 index 7683865a3c9..00000000000 --- a/src/Storages/System/InformationSchema/referential_constraints.sql +++ /dev/null @@ -1,25 +0,0 @@ -CREATE TABLE referential_constraints - ( - `constraint_catalog` String, - `constraint_schema` String, - `constraint_name` Nullable(String), - `unique_constraint_catalog` String, - `unique_constraint_schema` String, - `unique_constraint_name` Nullable(String), - `match_option` String, - `update_rule` String, - `delete_rule` String, - `table_name` String, - `referenced_table_name` String, - `CONSTRAINT_CATALOG` String, - `CONSTRAINT_SCHEMA` String, - `CONSTRAINT_NAME` Nullable(String), - `UNIQUE_CONSTRAINT_CATALOG` String, - `UNIQUE_CONSTRAINT_SCHEMA` String, - `UNIQUE_CONSTRAINT_NAME` Nullable(String), - `MATCH_OPTION` String, - `UPDATE_RULE` String, - `DELETE_RULE` String, - `TABLE_NAME` String, - `REFERENCED_TABLE_NAME` String -) ENGINE Memory; diff --git a/src/Storages/System/InformationSchema/schemata.sql b/src/Storages/System/InformationSchema/schemata.sql deleted file mode 100644 index 887a27537e9..00000000000 --- a/src/Storages/System/InformationSchema/schemata.sql +++ /dev/null @@ -1,33 +0,0 @@ -ATTACH VIEW schemata -( - `catalog_name` String, - `schema_name` String, - `schema_owner` String, - `default_character_set_catalog` Nullable(String), - `default_character_set_schema` Nullable(String), - `default_character_set_name` Nullable(String), - `sql_path` Nullable(String), - `CATALOG_NAME` String, - `SCHEMA_NAME` String, - `SCHEMA_OWNER` String, - `DEFAULT_CHARACTER_SET_CATALOG` Nullable(String), - `DEFAULT_CHARACTER_SET_SCHEMA` Nullable(String), - `DEFAULT_CHARACTER_SET_NAME` Nullable(String), - `SQL_PATH` Nullable(String) -) AS -SELECT - name AS catalog_name, - name AS schema_name, - 'default' AS schema_owner, - NULL AS default_character_set_catalog, - NULL AS default_character_set_schema, - NULL AS default_character_set_name, - NULL AS sql_path, - catalog_name AS CATALOG_NAME, - schema_name AS SCHEMA_NAME, - schema_owner AS SCHEMA_OWNER, - default_character_set_catalog AS DEFAULT_CHARACTER_SET_CATALOG, - default_character_set_schema AS DEFAULT_CHARACTER_SET_SCHEMA, - default_character_set_name AS DEFAULT_CHARACTER_SET_NAME, - sql_path AS SQL_PATH -FROM system.databases diff --git a/src/Storages/System/InformationSchema/tables.sql b/src/Storages/System/InformationSchema/tables.sql deleted file mode 100644 index becd609f94c..00000000000 --- a/src/Storages/System/InformationSchema/tables.sql +++ /dev/null @@ -1,34 +0,0 @@ -ATTACH VIEW tables -( - `table_catalog` String, - `table_schema` String, - `table_name` String, - `table_type` String, - `table_collation` Nullable(String), - `table_comment` Nullable(String), - `TABLE_CATALOG` String, - `TABLE_SCHEMA` String, - `TABLE_NAME` String, - `TABLE_TYPE` String, - `TABLE_COLLATION` Nullable(String), - `TABLE_COMMENT` Nullable(String) -) AS -SELECT - database AS table_catalog, - database AS table_schema, - name AS table_name, - multiIf(is_temporary, 'LOCAL TEMPORARY', - engine LIKE '%View', 'VIEW', - engine LIKE 'System%', 'SYSTEM VIEW', - has_own_data = 0, 'FOREIGN TABLE', - 'BASE TABLE' - ) AS table_type, - 'utf8mb4_0900_ai_ci' AS table_collation, - comment AS table_comment, - table_catalog AS TABLE_CATALOG, - table_schema AS TABLE_SCHEMA, - table_name AS TABLE_NAME, - table_type AS TABLE_TYPE, - table_collation AS TABLE_COLLATION, - table_comment AS TABLE_COMMENT -FROM system.tables diff --git a/src/Storages/System/InformationSchema/views.sql b/src/Storages/System/InformationSchema/views.sql deleted file mode 100644 index 7c6f65e120b..00000000000 --- a/src/Storages/System/InformationSchema/views.sql +++ /dev/null @@ -1,46 +0,0 @@ -ATTACH VIEW views -( - `table_catalog` String, - `table_schema` String, - `table_name` String, - `view_definition` String, - `check_option` String, - `is_updatable` Enum8('NO' = 0, 'YES' = 1), - `is_insertable_into` Enum8('NO' = 0, 'YES' = 1), - `is_trigger_updatable` Enum8('NO' = 0, 'YES' = 1), - `is_trigger_deletable` Enum8('NO' = 0, 'YES' = 1), - `is_trigger_insertable_into` Enum8('NO' = 0, 'YES' = 1), - `TABLE_CATALOG` String, - `TABLE_SCHEMA` String, - `TABLE_NAME` String, - `VIEW_DEFINITION` String, - `CHECK_OPTION` String, - `IS_UPDATABLE` Enum8('NO' = 0, 'YES' = 1), - `IS_INSERTABLE_INTO` Enum8('NO' = 0, 'YES' = 1), - `IS_TRIGGER_UPDATABLE` Enum8('NO' = 0, 'YES' = 1), - `IS_TRIGGER_DELETABLE` Enum8('NO' = 0, 'YES' = 1), - `IS_TRIGGER_INSERTABLE_INTO` Enum8('NO' = 0, 'YES' = 1) -) AS -SELECT - database AS table_catalog, - database AS table_schema, - name AS table_name, - as_select AS view_definition, - 'NONE' AS check_option, - 0 AS is_updatable, - engine = 'MaterializedView' AS is_insertable_into, - 0 AS is_trigger_updatable, - 0 AS is_trigger_deletable, - 0 AS is_trigger_insertable_into, - table_catalog AS TABLE_CATALOG, - table_schema AS TABLE_SCHEMA, - table_name AS TABLE_NAME, - view_definition AS VIEW_DEFINITION, - check_option AS CHECK_OPTION, - is_updatable AS IS_UPDATABLE, - is_insertable_into AS IS_INSERTABLE_INTO, - is_trigger_updatable AS IS_TRIGGER_UPDATABLE, - is_trigger_deletable AS IS_TRIGGER_DELETABLE, - is_trigger_insertable_into AS IS_TRIGGER_INSERTABLE_INTO -FROM system.tables -WHERE engine LIKE '%View' diff --git a/src/Storages/System/attachInformationSchemaTables.cpp b/src/Storages/System/attachInformationSchemaTables.cpp index d4775bf0d4a..48cf8c0a69f 100644 --- a/src/Storages/System/attachInformationSchemaTables.cpp +++ b/src/Storages/System/attachInformationSchemaTables.cpp @@ -3,21 +3,360 @@ #include #include #include -#include -#include "config.h" - -/// Embedded SQL definitions -INCBIN(resource_schemata_sql, SOURCE_DIR "/src/Storages/System/InformationSchema/schemata.sql"); -INCBIN(resource_tables_sql, SOURCE_DIR "/src/Storages/System/InformationSchema/tables.sql"); -INCBIN(resource_views_sql, SOURCE_DIR "/src/Storages/System/InformationSchema/views.sql"); -INCBIN(resource_columns_sql, SOURCE_DIR "/src/Storages/System/InformationSchema/columns.sql"); -INCBIN(resource_key_column_usage_sql, SOURCE_DIR "/src/Storages/System/InformationSchema/key_column_usage.sql"); -INCBIN(resource_referential_constraints_sql, SOURCE_DIR "/src/Storages/System/InformationSchema/referential_constraints.sql"); namespace DB { +/// Below are SQL definitions for views in "information_schema". Perhaps it would be more aesthetic to have them in .sql files +/// and embed them here instead. In fact, it has been that way using INCBIN macros until #54773. The problem was that when +/// existing .sql files were changed, the build system did not recognize that this source (.cpp) file changed and instead used +/// cached object files from previous builds. +/// +/// INCBIN is one of many libraries to embed external data. We might wait a little bit longer and try #embed (*) which should +/// solve the problem once and for all after 40 years. +/// +/// (*) https://thephd.dev/finally-embed-in-c23 + +static constexpr std::string_view schemata = R"( + ATTACH VIEW schemata + ( + `catalog_name` String, + `schema_name` String, + `schema_owner` String, + `default_character_set_catalog` Nullable(String), + `default_character_set_schema` Nullable(String), + `default_character_set_name` Nullable(String), + `sql_path` Nullable(String), + `CATALOG_NAME` String, + `SCHEMA_NAME` String, + `SCHEMA_OWNER` String, + `DEFAULT_CHARACTER_SET_CATALOG` Nullable(String), + `DEFAULT_CHARACTER_SET_SCHEMA` Nullable(String), + `DEFAULT_CHARACTER_SET_NAME` Nullable(String), + `SQL_PATH` Nullable(String) + ) AS + SELECT + name AS catalog_name, + name AS schema_name, + 'default' AS schema_owner, + NULL AS default_character_set_catalog, + NULL AS default_character_set_schema, + NULL AS default_character_set_name, + NULL AS sql_path, + catalog_name AS CATALOG_NAME, + schema_name AS SCHEMA_NAME, + schema_owner AS SCHEMA_OWNER, + default_character_set_catalog AS DEFAULT_CHARACTER_SET_CATALOG, + default_character_set_schema AS DEFAULT_CHARACTER_SET_SCHEMA, + default_character_set_name AS DEFAULT_CHARACTER_SET_NAME, + sql_path AS SQL_PATH + FROM system.databases +)"; + +static constexpr std::string_view tables = R"( + ATTACH VIEW tables + ( + `table_catalog` String, + `table_schema` String, + `table_name` String, + `table_type` String, + `table_collation` Nullable(String), + `table_comment` Nullable(String), + `TABLE_CATALOG` String, + `TABLE_SCHEMA` String, + `TABLE_NAME` String, + `TABLE_TYPE` String, + `TABLE_COLLATION` Nullable(String), + `TABLE_COMMENT` Nullable(String) + ) AS + SELECT + database AS table_catalog, + database AS table_schema, + name AS table_name, + multiIf(is_temporary, 'LOCAL TEMPORARY', + engine LIKE '%View', 'VIEW', + engine LIKE 'System%', 'SYSTEM VIEW', + has_own_data = 0, 'FOREIGN TABLE', + 'BASE TABLE' + ) AS table_type, + 'utf8mb4_0900_ai_ci' AS table_collation, + comment AS table_comment, + table_catalog AS TABLE_CATALOG, + table_schema AS TABLE_SCHEMA, + table_name AS TABLE_NAME, + table_type AS TABLE_TYPE, + table_collation AS TABLE_COLLATION, + table_comment AS TABLE_COMMENT + FROM system.tables +)"; + +static constexpr std::string_view views = R"( + ATTACH VIEW views + ( + `table_catalog` String, + `table_schema` String, + `table_name` String, + `view_definition` String, + `check_option` String, + `is_updatable` Enum8('NO' = 0, 'YES' = 1), + `is_insertable_into` Enum8('NO' = 0, 'YES' = 1), + `is_trigger_updatable` Enum8('NO' = 0, 'YES' = 1), + `is_trigger_deletable` Enum8('NO' = 0, 'YES' = 1), + `is_trigger_insertable_into` Enum8('NO' = 0, 'YES' = 1), + `TABLE_CATALOG` String, + `TABLE_SCHEMA` String, + `TABLE_NAME` String, + `VIEW_DEFINITION` String, + `CHECK_OPTION` String, + `IS_UPDATABLE` Enum8('NO' = 0, 'YES' = 1), + `IS_INSERTABLE_INTO` Enum8('NO' = 0, 'YES' = 1), + `IS_TRIGGER_UPDATABLE` Enum8('NO' = 0, 'YES' = 1), + `IS_TRIGGER_DELETABLE` Enum8('NO' = 0, 'YES' = 1), + `IS_TRIGGER_INSERTABLE_INTO` Enum8('NO' = 0, 'YES' = 1) + ) AS + SELECT + database AS table_catalog, + database AS table_schema, + name AS table_name, + as_select AS view_definition, + 'NONE' AS check_option, + 0 AS is_updatable, + engine = 'MaterializedView' AS is_insertable_into, + 0 AS is_trigger_updatable, + 0 AS is_trigger_deletable, + 0 AS is_trigger_insertable_into, + table_catalog AS TABLE_CATALOG, + table_schema AS TABLE_SCHEMA, + table_name AS TABLE_NAME, + view_definition AS VIEW_DEFINITION, + check_option AS CHECK_OPTION, + is_updatable AS IS_UPDATABLE, + is_insertable_into AS IS_INSERTABLE_INTO, + is_trigger_updatable AS IS_TRIGGER_UPDATABLE, + is_trigger_deletable AS IS_TRIGGER_DELETABLE, + is_trigger_insertable_into AS IS_TRIGGER_INSERTABLE_INTO + FROM system.tables + WHERE engine LIKE '%View' +)"; + +static constexpr std::string_view columns = R"( + ATTACH VIEW columns + ( + `table_catalog` String, + `table_schema` String, + `table_name` String, + `column_name` String, + `ordinal_position` UInt64, + `column_default` String, + `is_nullable` String, + `data_type` String, + `character_maximum_length` Nullable(UInt64), + `character_octet_length` Nullable(UInt64), + `numeric_precision` Nullable(UInt64), + `numeric_precision_radix` Nullable(UInt64), + `numeric_scale` Nullable(UInt64), + `datetime_precision` Nullable(UInt64), + `character_set_catalog` Nullable(String), + `character_set_schema` Nullable(String), + `character_set_name` Nullable(String), + `collation_catalog` Nullable(String), + `collation_schema` Nullable(String), + `collation_name` Nullable(String), + `domain_catalog` Nullable(String), + `domain_schema` Nullable(String), + `domain_name` Nullable(String), + `column_comment` String, + `column_type` String, + `TABLE_CATALOG` String, + `TABLE_SCHEMA` String, + `TABLE_NAME` String, + `COLUMN_NAME` String, + `ORDINAL_POSITION` UInt64, + `COLUMN_DEFAULT` String, + `IS_NULLABLE` String, + `DATA_TYPE` String, + `CHARACTER_MAXIMUM_LENGTH` Nullable(UInt64), + `CHARACTER_OCTET_LENGTH` Nullable(UInt64), + `NUMERIC_PRECISION` Nullable(UInt64), + `NUMERIC_PRECISION_RADIX` Nullable(UInt64), + `NUMERIC_SCALE` Nullable(UInt64), + `DATETIME_PRECISION` Nullable(UInt64), + `CHARACTER_SET_CATALOG` Nullable(String), + `CHARACTER_SET_SCHEMA` Nullable(String), + `CHARACTER_SET_NAME` Nullable(String), + `COLLATION_CATALOG` Nullable(String), + `COLLATION_SCHEMA` Nullable(String), + `COLLATION_NAME` Nullable(String), + `DOMAIN_CATALOG` Nullable(String), + `DOMAIN_SCHEMA` Nullable(String), + `DOMAIN_NAME` Nullable(String), + `COLUMN_COMMENT` String, + `COLUMN_TYPE` String + ) AS + SELECT + database AS table_catalog, + database AS table_schema, + table AS table_name, + name AS column_name, + position AS ordinal_position, + default_expression AS column_default, + type LIKE 'Nullable(%)' AS is_nullable, + type AS data_type, + character_octet_length AS character_maximum_length, + character_octet_length, + numeric_precision, + numeric_precision_radix, + numeric_scale, + datetime_precision, + NULL AS character_set_catalog, + NULL AS character_set_schema, + NULL AS character_set_name, + NULL AS collation_catalog, + NULL AS collation_schema, + NULL AS collation_name, + NULL AS domain_catalog, + NULL AS domain_schema, + NULL AS domain_name, + comment AS column_comment, + type AS column_type, + table_catalog AS TABLE_CATALOG, + table_schema AS TABLE_SCHEMA, + table_name AS TABLE_NAME, + column_name AS COLUMN_NAME, + ordinal_position AS ORDINAL_POSITION, + column_default AS COLUMN_DEFAULT, + is_nullable AS IS_NULLABLE, + data_type AS DATA_TYPE, + character_maximum_length AS CHARACTER_MAXIMUM_LENGTH, + character_octet_length AS CHARACTER_OCTET_LENGTH, + numeric_precision AS NUMERIC_PRECISION, + numeric_precision_radix AS NUMERIC_PRECISION_RADIX, + numeric_scale AS NUMERIC_SCALE, + datetime_precision AS DATETIME_PRECISION, + character_set_catalog AS CHARACTER_SET_CATALOG, + character_set_schema AS CHARACTER_SET_SCHEMA, + character_set_name AS CHARACTER_SET_NAME, + collation_catalog AS COLLATION_CATALOG, + collation_schema AS COLLATION_SCHEMA, + collation_name AS COLLATION_NAME, + domain_catalog AS DOMAIN_CATALOG, + domain_schema AS DOMAIN_SCHEMA, + domain_name AS DOMAIN_NAME, + column_comment AS COLUMN_COMMENT, + column_type AS COLUMN_TYPE + FROM system.columns +)"; + +static constexpr std::string_view key_column_usage = R"( + ATTACH VIEW key_column_usage + ( + `constraint_catalog` String, + `constraint_schema` String, + `constraint_name` Nullable(String), + `table_catalog` String, + `table_schema` String, + `table_name` String, + `column_name` Nullable(String), + `ordinal_position` UInt32, + `position_in_unique_constraint` Nullable(UInt32), + `referenced_table_schema` Nullable(String), + `referenced_table_name` Nullable(String), + `referenced_column_name` Nullable(String), + `CONSTRAINT_CATALOG` Nullable(String), + `CONSTRAINT_SCHEMA` Nullable(String), + `CONSTRAINT_NAME` Nullable(String), + `TABLE_CATALOG` String, + `TABLE_SCHEMA` String, + `TABLE_NAME` String, + `COLUMN_NAME` Nullable(String), + `ORDINAL_POSITION` UInt32, + `POSITION_IN_UNIQUE_CONSTRAINT` Nullable(UInt32), + `REFERENCED_TABLE_SCHEMA` Nullable(String), + `REFERENCED_TABLE_NAME` Nullable(String), + `REFERENCED_COLUMN_NAME` Nullable(String) + ) AS + SELECT + 'def' AS constraint_catalog, + database AS constraint_schema, + 'PRIMARY' AS constraint_name, + 'def' AS table_catalog, + database AS table_schema, + table AS table_name, + name AS column_name, + 1 AS ordinal_position, + NULL AS position_in_unique_constraint, + NULL AS referenced_table_schema, + NULL AS referenced_table_name, + NULL AS referenced_column_name, + constraint_catalog AS CONSTRAINT_CATALOG, + constraint_schema AS CONSTRAINT_SCHEMA, + constraint_name AS CONSTRAINT_NAME, + table_catalog AS TABLE_CATALOG, + table_schema AS TABLE_SCHEMA, + table_name AS TABLE_NAME, + column_name AS COLUMN_NAME, + ordinal_position AS ORDINAL_POSITION, + position_in_unique_constraint AS POSITION_IN_UNIQUE_CONSTRAINT, + referenced_table_schema AS REFERENCED_TABLE_SCHEMA, + referenced_table_name AS REFERENCED_TABLE_NAME, + referenced_column_name AS REFERENCED_COLUMN_NAME + FROM system.columns + WHERE is_in_primary_key; +)"; + +static constexpr std::string_view referential_constraints = R"( + ATTACH VIEW referential_constraints + ( + `constraint_catalog` String, + `constraint_schema` String, + `constraint_name` Nullable(String), + `unique_constraint_catalog` String, + `unique_constraint_schema` String, + `unique_constraint_name` Nullable(String), + `match_option` String, + `update_rule` String, + `delete_rule` String, + `table_name` String, + `referenced_table_name` String, + `CONSTRAINT_CATALOG` String, + `CONSTRAINT_SCHEMA` String, + `CONSTRAINT_NAME` Nullable(String), + `UNIQUE_CONSTRAINT_CATALOG` String, + `UNIQUE_CONSTRAINT_SCHEMA` String, + `UNIQUE_CONSTRAINT_NAME` Nullable(String), + `MATCH_OPTION` String, + `UPDATE_RULE` String, + `DELETE_RULE` String, + `TABLE_NAME` String, + `REFERENCED_TABLE_NAME` String + ) AS + SELECT + '' AS constraint_catalog, + NULL AS constraint_name, + '' AS constraint_schema, + '' AS unique_constraint_catalog, + NULL AS unique_constraint_name, + '' AS unique_constraint_schema, + '' AS match_option, + '' AS update_rule, + '' AS delete_rule, + '' AS table_name, + '' AS referenced_table_name, + constraint_catalog AS CONSTRAINT_CATALOG, + constraint_name AS CONSTRAINT_NAME, + constraint_schema AS CONSTRAINT_SCHEMA, + unique_constraint_catalog AS UNIQUE_CONSTRAINT_CATALOG, + unique_constraint_name AS UNIQUE_CONSTRAINT_NAME, + unique_constraint_schema AS UNIQUE_CONSTRAINT_SCHEMA, + match_option AS MATCH_OPTION, + update_rule AS UPDATE_RULE, + delete_rule AS DELETE_RULE, + table_name AS TABLE_NAME, + referenced_table_name AS REFERENCED_TABLE_NAME + WHERE false; -- make sure this view is always empty +)"; + /// View structures are taken from http://www.contrib.andrew.cmu.edu/~shadow/sql/sql1992.txt static void createInformationSchemaView(ContextMutablePtr context, IDatabase & database, const String & view_name, std::string_view query) @@ -63,12 +402,12 @@ static void createInformationSchemaView(ContextMutablePtr context, IDatabase & d void attachInformationSchema(ContextMutablePtr context, IDatabase & information_schema_database) { - createInformationSchemaView(context, information_schema_database, "schemata", std::string_view(reinterpret_cast(gresource_schemata_sqlData), gresource_schemata_sqlSize)); - createInformationSchemaView(context, information_schema_database, "tables", std::string_view(reinterpret_cast(gresource_tables_sqlData), gresource_tables_sqlSize)); - createInformationSchemaView(context, information_schema_database, "views", std::string_view(reinterpret_cast(gresource_views_sqlData), gresource_views_sqlSize)); - createInformationSchemaView(context, information_schema_database, "columns", std::string_view(reinterpret_cast(gresource_columns_sqlData), gresource_columns_sqlSize)); - createInformationSchemaView(context, information_schema_database, "key_column_usage", std::string_view(reinterpret_cast(gresource_key_column_usage_sqlData), gresource_key_column_usage_sqlSize)); - createInformationSchemaView(context, information_schema_database, "referential_constraints", std::string_view(reinterpret_cast(gresource_referential_constraints_sqlData), gresource_referential_constraints_sqlSize)); + createInformationSchemaView(context, information_schema_database, "schemata", schemata); + createInformationSchemaView(context, information_schema_database, "tables", tables); + createInformationSchemaView(context, information_schema_database, "views", views); + createInformationSchemaView(context, information_schema_database, "columns", columns); + createInformationSchemaView(context, information_schema_database, "key_column_usage", key_column_usage); + createInformationSchemaView(context, information_schema_database, "referential_constraints", referential_constraints); } }