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Merge pull request #55239 from aiven-sal/aiven-sal/format_query
Add formatQuery function
This commit is contained in:
Robert Schulze
GitHub
commit
325ff33c3a
@ -2794,3 +2794,71 @@ message Root
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uint32 column2 = 2;
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}
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```
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## formatQuery
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Returns a formatted, possibly multi-line, version of the given SQL query.
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**Syntax**
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```sql
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formatQuery(query)
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```
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**Arguments**
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- `query` - The SQL query to be formatted. [String](../../sql-reference/data-types/string.md)
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**Returned value**
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- The formatted query. [String](../../sql-reference/data-types/string.md).
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**Example**
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```sql
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SELECT formatQuery('select a, b FRom tab WHERE a > 3 and b < 3');
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```
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Result:
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```result
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┌─formatQuery('select a, b FRom tab WHERE a > 3 and b < 3')─┐
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│ SELECT
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a,
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b
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FROM tab
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WHERE (a > 3) AND (b < 3) │
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└───────────────────────────────────────────────────────────────┘
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```
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## formatQuerySingleLine
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Like formatQuery() but the returned formatted string contains no line breaks.
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**Syntax**
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```sql
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formatQuerySingleLine(query)
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```
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**Arguments**
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- `query` - The SQL query to be formatted. [String](../../sql-reference/data-types/string.md)
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**Returned value**
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- The formatted query. [String](../../sql-reference/data-types/string.md).
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**Example**
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```sql
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SELECT formatQuerySingleLine('select a, b FRom tab WHERE a > 3 and b < 3');
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```
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Result:
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```result
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┌─formatQuerySingleLine('select a, b FRom tab WHERE a > 3 and b < 3')─┐
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│ SELECT a, b FROM tab WHERE (a > 3) AND (b < 3) │
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└─────────────────────────────────────────────────────────────────────────┘
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```
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137
src/Functions/formatQuery.cpp
Normal file
137
src/Functions/formatQuery.cpp
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@ -0,0 +1,137 @@
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#include <Columns/ColumnString.h>
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#include <Functions/FunctionFactory.h>
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#include <Functions/FunctionHelpers.h>
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#include <IO/WriteBufferFromVector.h>
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#include <Interpreters/Context.h>
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#include <Parsers/ParserQuery.h>
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#include <Parsers/formatAST.h>
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#include <Parsers/parseQuery.h>
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namespace DB
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{
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namespace ErrorCodes
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{
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extern const int ILLEGAL_COLUMN;
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}
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template <bool one_line, typename Name>
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class FunctionFormatQuery : public IFunction
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{
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public:
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static constexpr auto name = Name::name;
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static FunctionPtr create(ContextPtr context)
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{
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const auto & settings = context->getSettings();
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return std::make_shared<FunctionFormatQuery>(settings.max_query_size, settings.max_parser_depth);
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}
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FunctionFormatQuery(size_t max_query_size_, size_t max_parser_depth_)
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: max_query_size(max_query_size_), max_parser_depth(max_parser_depth_)
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{
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}
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String getName() const override { return name; }
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size_t getNumberOfArguments() const override { return 1; }
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bool isSuitableForShortCircuitArgumentsExecution(const DataTypesWithConstInfo & /*arguments*/) const override { return true; }
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DataTypePtr getReturnTypeImpl(const ColumnsWithTypeAndName & arguments) const override
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{
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FunctionArgumentDescriptors mandatory_args{{"query", &isString<IDataType>, nullptr, "String"}};
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validateFunctionArgumentTypes(*this, arguments, mandatory_args);
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return arguments[0].type;
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}
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bool useDefaultImplementationForConstants() const override { return true; }
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ColumnPtr executeImpl(const ColumnsWithTypeAndName & arguments, const DataTypePtr &, size_t /*input_rows_count*/) const override
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{
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const ColumnPtr column = arguments[0].column;
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if (const ColumnString * col = checkAndGetColumn<ColumnString>(column.get()))
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{
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auto col_res = ColumnString::create();
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formatVector(col->getChars(), col->getOffsets(), col_res->getChars(), col_res->getOffsets());
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return col_res;
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}
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else
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throw Exception(
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ErrorCodes::ILLEGAL_COLUMN, "Illegal column {} of argument of function {}", arguments[0].column->getName(), getName());
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}
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private:
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void formatQueryImpl(const char * begin, const char * end, ColumnString::Chars & output) const
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{
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ParserQuery parser{end};
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auto ast = parseQuery(parser, begin, end, {}, max_query_size, max_parser_depth);
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WriteBufferFromVector buf(output, AppendModeTag{});
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formatAST(*ast, buf, /* hilite */ false, /* one_line */ one_line);
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buf.finalize();
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}
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void formatVector(
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const ColumnString::Chars & data,
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const ColumnString::Offsets & offsets,
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ColumnString::Chars & res_data,
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ColumnString::Offsets & res_offsets) const
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{
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const size_t size = offsets.size();
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res_offsets.resize(size);
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res_data.reserve(data.size());
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size_t prev_in_offset = 0;
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for (size_t i = 0; i < size; ++i)
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{
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const auto * begin = reinterpret_cast<const char *>(&data[prev_in_offset]);
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const char * end = begin + offsets[i] - 1;
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formatQueryImpl(begin, end, res_data);
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res_offsets[i] = res_data.size() + 1;
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prev_in_offset = offsets[i];
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}
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}
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size_t max_query_size;
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size_t max_parser_depth;
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};
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struct NameFormatQuery
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{
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static constexpr auto name = "formatQuery";
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};
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struct NameFormatQuerySingleLine
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{
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static constexpr auto name = "formatQuerySingleLine";
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};
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REGISTER_FUNCTION(formatQuery)
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{
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factory.registerFunction<FunctionFormatQuery<false, NameFormatQuery>>(FunctionDocumentation{
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.description = "Returns a formatted, possibly multi-line, version of the given SQL query.\n[example:multiline]",
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.syntax = "formatQuery(query)",
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.arguments = {{"query", "The SQL query to be formatted. [String](../../sql-reference/data-types/string.md)"}},
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.returned_value = "The formatted query. [String](../../sql-reference/data-types/string.md).",
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.examples{
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{"multiline",
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"SELECT formatQuery('select a, b FRom tab WHERE a > 3 and b < 3');",
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"SELECT\n"
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" a,\n"
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" b\n"
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"FROM tab\n"
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"WHERE (a > 3) AND (b < 3)"}},
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.categories{"Other"}});
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}
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REGISTER_FUNCTION(formatQuerySingleLine)
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{
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factory.registerFunction<FunctionFormatQuery<true, NameFormatQuerySingleLine>>(FunctionDocumentation{
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.description = "Like formatQuery() but the returned formatted string contains no line breaks.\n[example:multiline]",
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.syntax = "formatQuerySingleLine(query)",
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.arguments = {{"query", "The SQL query to be formatted. [String](../../sql-reference/data-types/string.md)"}},
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.returned_value = "The formatted query. [String](../../sql-reference/data-types/string.md).",
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.examples{
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{"multiline",
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"SELECT formatQuerySingleLine('select a, b FRom tab WHERE a > 3 and b < 3');",
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"SELECT a, b FROM tab WHERE (a > 3) AND (b < 3)"}},
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.categories{"Other"}});
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}
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}
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19
tests/queries/0_stateless/02882_formatQuery.reference
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19
tests/queries/0_stateless/02882_formatQuery.reference
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@ -0,0 +1,19 @@
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SELECT 1
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SELECT 1
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SELECT 1
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SELECT 1
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1
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INSERT INTO tab FORMAT Values
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CREATE TABLE default.no_prop_table\n(\n `some_column` UInt64\n)\nENGINE = MergeTree\nORDER BY tuple()\nSETTINGS index_granularity = 8192
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EXPLAIN SYNTAX\nSELECT\n CAST(1, \'INT\'),\n CEIL(1),\n CEILING(1),\n CHAR(49),\n CHAR_LENGTH(\'1\'),\n CHARACTER_LENGTH(\'1\'),\n COALESCE(1),\n CONCAT(\'1\', \'1\'),\n CORR(1, 1),\n COS(1),\n COUNT(1),\n COVAR_POP(1, 1),\n COVAR_SAMP(1, 1),\n DATABASE(),\n SCHEMA(),\n dateDiff(\'DAY\', toDate(\'2020-10-24\'), toDate(\'2019-10-24\')),\n EXP(1),\n FLATTEN([[1]]),\n FLOOR(1),\n FQDN(),\n GREATEST(1),\n IF(1, 1, 1),\n IFNULL(1, 1),\n LCASE(\'A\'),\n LEAST(1),\n LENGTH(\'1\'),\n LN(1),\n LOCATE(\'1\', \'1\'),\n LOG(1),\n LOG10(1),\n LOG2(1),\n LOWER(\'A\'),\n MAX(1),\n MID(\'123\', 1, 1),\n MIN(1),\n MOD(1, 1),\n NOT 1,\n NOW(),\n NOW64(),\n NULLIF(1, 1),\n PI(),\n position(\'123\', \'2\'),\n POW(1, 1),\n POWER(1, 1),\n RAND(),\n REPLACE(\'1\', \'1\', \'2\'),\n REVERSE(\'123\'),\n ROUND(1),\n SIN(1),\n SQRT(1),\n STDDEV_POP(1),\n STDDEV_SAMP(1),\n SUBSTR(\'123\', 2),\n substring(\'123\', 2),\n SUM(1),\n TAN(1),\n TANH(1),\n TRUNC(1),\n TRUNCATE(1),\n UCASE(\'A\'),\n UPPER(\'A\'),\n USER(),\n VAR_POP(1),\n VAR_SAMP(1),\n WEEK(toDate(\'2020-10-24\')),\n YEARWEEK(toDate(\'2020-10-24\'))\nFORMAT TSVRaw
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1
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formatQuerySingleLine
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SELECT 1
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SELECT 1
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SELECT 1
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SELECT 1
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1
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INSERT INTO tab FORMAT Values
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CREATE TABLE default.no_prop_table (`some_column` UInt64) ENGINE = MergeTree ORDER BY tuple() SETTINGS index_granularity = 8192
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EXPLAIN SYNTAX SELECT CAST(1, \'INT\'), CEIL(1), CEILING(1), CHAR(49), CHAR_LENGTH(\'1\'), CHARACTER_LENGTH(\'1\'), COALESCE(1), CONCAT(\'1\', \'1\'), CORR(1, 1), COS(1), COUNT(1), COVAR_POP(1, 1), COVAR_SAMP(1, 1), DATABASE(), SCHEMA(), dateDiff(\'DAY\', toDate(\'2020-10-24\'), toDate(\'2019-10-24\')), EXP(1), FLATTEN([[1]]), FLOOR(1), FQDN(), GREATEST(1), IF(1, 1, 1), IFNULL(1, 1), LCASE(\'A\'), LEAST(1), LENGTH(\'1\'), LN(1), LOCATE(\'1\', \'1\'), LOG(1), LOG10(1), LOG2(1), LOWER(\'A\'), MAX(1), MID(\'123\', 1, 1), MIN(1), MOD(1, 1), NOT 1, NOW(), NOW64(), NULLIF(1, 1), PI(), position(\'123\', \'2\'), POW(1, 1), POWER(1, 1), RAND(), REPLACE(\'1\', \'1\', \'2\'), REVERSE(\'123\'), ROUND(1), SIN(1), SQRT(1), STDDEV_POP(1), STDDEV_SAMP(1), SUBSTR(\'123\', 2), substring(\'123\', 2), SUM(1), TAN(1), TANH(1), TRUNC(1), TRUNCATE(1), UCASE(\'A\'), UPPER(\'A\'), USER(), VAR_POP(1), VAR_SAMP(1), WEEK(toDate(\'2020-10-24\')), YEARWEEK(toDate(\'2020-10-24\')) FORMAT TSVRaw
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1
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21
tests/queries/0_stateless/02882_formatQuery.sql
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21
tests/queries/0_stateless/02882_formatQuery.sql
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@ -0,0 +1,21 @@
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SELECT formatQuery('select 1;');
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SELECT formatQuery('select 1');
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SELECT formatQuery('SELECT 1;');
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SELECT formatQuery('SELECT 1');
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SELECT formatQuery('select 1;') == formatQuery('SeLecT 1');
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SELECT formatQuery('INSERT INTO tab VALUES (\'\') (\'test\')');
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SELECT formatQuery('CREATE TABLE default.no_prop_table(`some_column` UInt64) ENGINE = MergeTree ORDER BY tuple() SETTINGS index_granularity = 8192');
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SELECT formatQuery('EXPLAIN SYNTAX SELECT CAST(1 AS INT), CEIL(1), CEILING(1), CHAR(49), CHAR_LENGTH(\'1\'), CHARACTER_LENGTH(\'1\'), COALESCE(1), CONCAT(\'1\', \'1\'), CORR(1, 1), COS(1), COUNT(1), COVAR_POP(1, 1), COVAR_SAMP(1, 1), DATABASE(), SCHEMA(), DATEDIFF(\'DAY\', toDate(\'2020-10-24\'), toDate(\'2019-10-24\')), EXP(1), FLATTEN([[1]]), FLOOR(1), FQDN(), GREATEST(1), IF(1, 1, 1), IFNULL(1, 1), LCASE(\'A\'), LEAST(1), LENGTH(\'1\'), LN(1), LOCATE(\'1\', \'1\'), LOG(1), LOG10(1), LOG2(1), LOWER(\'A\'), MAX(1), MID(\'123\', 1, 1), MIN(1), MOD(1, 1), NOT(1), NOW(), NOW64(), NULLIF(1, 1), PI(), POSITION(\'123\', \'2\'), POW(1, 1), POWER(1, 1), RAND(), REPLACE(\'1\', \'1\', \'2\'), REVERSE(\'123\'), ROUND(1), SIN(1), SQRT(1), STDDEV_POP(1), STDDEV_SAMP(1), SUBSTR(\'123\', 2), SUBSTRING(\'123\', 2), SUM(1), TAN(1), TANH(1), TRUNC(1), TRUNCATE(1), UCASE(\'A\'), UPPER(\'A\'), USER(), VAR_POP(1), VAR_SAMP(1), WEEK(toDate(\'2020-10-24\')), YEARWEEK(toDate(\'2020-10-24\')) format TSVRaw;');
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SELECT normalizedQueryHash(formatQuery('select 1')) = normalizedQueryHash(formatQuery('SELECT 1'));
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SELECT formatQuery('SEECTwrong'); -- { serverError SYNTAX_ERROR }
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SELECT 'formatQuerySingleLine';
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SELECT formatQuerySingleLine('select 1;');
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SELECT formatQuerySingleLine('select 1');
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SELECT formatQuerySingleLine('SELECT 1;');
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SELECT formatQuerySingleLine('SELECT 1');
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SELECT formatQuerySingleLine('select 1;') == formatQuerySingleLine('SeLecT 1');
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SELECT formatQuerySingleLine('INSERT INTO tab VALUES (\'\') (\'test\')');
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SELECT formatQuerySingleLine('CREATE TABLE default.no_prop_table(`some_column` UInt64) ENGINE = MergeTree ORDER BY tuple() SETTINGS index_granularity = 8192');
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SELECT formatQuerySingleLine('EXPLAIN SYNTAX SELECT CAST(1 AS INT), CEIL(1), CEILING(1), CHAR(49), CHAR_LENGTH(\'1\'), CHARACTER_LENGTH(\'1\'), COALESCE(1), CONCAT(\'1\', \'1\'), CORR(1, 1), COS(1), COUNT(1), COVAR_POP(1, 1), COVAR_SAMP(1, 1), DATABASE(), SCHEMA(), DATEDIFF(\'DAY\', toDate(\'2020-10-24\'), toDate(\'2019-10-24\')), EXP(1), FLATTEN([[1]]), FLOOR(1), FQDN(), GREATEST(1), IF(1, 1, 1), IFNULL(1, 1), LCASE(\'A\'), LEAST(1), LENGTH(\'1\'), LN(1), LOCATE(\'1\', \'1\'), LOG(1), LOG10(1), LOG2(1), LOWER(\'A\'), MAX(1), MID(\'123\', 1, 1), MIN(1), MOD(1, 1), NOT(1), NOW(), NOW64(), NULLIF(1, 1), PI(), POSITION(\'123\', \'2\'), POW(1, 1), POWER(1, 1), RAND(), REPLACE(\'1\', \'1\', \'2\'), REVERSE(\'123\'), ROUND(1), SIN(1), SQRT(1), STDDEV_POP(1), STDDEV_SAMP(1), SUBSTR(\'123\', 2), SUBSTRING(\'123\', 2), SUM(1), TAN(1), TANH(1), TRUNC(1), TRUNCATE(1), UCASE(\'A\'), UPPER(\'A\'), USER(), VAR_POP(1), VAR_SAMP(1), WEEK(toDate(\'2020-10-24\')), YEARWEEK(toDate(\'2020-10-24\')) format TSVRaw;');
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SELECT normalizedQueryHash(formatQuerySingleLine('select 1')) = normalizedQueryHash(formatQuerySingleLine('SELECT 1'));
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SELECT formatQuerySingleLine('SEECTwrong'); -- { serverError SYNTAX_ERROR }
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@ -1479,6 +1479,8 @@ fmtlib
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formatDateTime
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formatDateTimeInJoda
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formatDateTimeInJodaSyntax
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formatQuery
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formatQuerySingleLine
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formatReadableDecimalSize
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formatReadableQuantity
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formatReadableSize
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