2019-11-03 11:10:03 +00:00
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parser grammar ClickHouseParser;
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options {
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tokenVocab=ClickHouseLexer;
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}
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// эта грамматика написана по сорсам парсеров, имена правил примерно соответствуют парсерам в cpp.
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// известные расхождения
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// 1. скобки не обязательно сразу идут после имени функции.
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// 2. многословные токены поделены на самостоятельные слова
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// 3. для INSERT запроса не написана часть парсинга значений.
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// 4. правило для expr переписано чтобы понизить глубину AST и сразу выходить на уровень expr - al
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parse
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2019-12-19 12:00:47 +00:00
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: ( query | err ) EOF
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2019-11-03 11:10:03 +00:00
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query
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: show_tables_query
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| select_query
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| insert_query
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| create_query
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| rename_query
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| drop_query
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| alter_query
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| use_query
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| set_query
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| optimize_query
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| table_properties_query
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| show_processlist_query
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| check_query
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| kill_query_query
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;
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// 1. QUERIES
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select_query
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: select_query_main ( K_UNION K_ALL select_query_main ) *
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query_outfile_step?
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select_format_step?
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;
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select_query_main
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2019-12-19 12:33:49 +00:00
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: select_with_step?
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2019-11-03 11:10:03 +00:00
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select_select_step select_from_step?
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K_FINAL? select_sample_step?
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select_array_join_step? select_join_step?
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select_prewhere_step? select_where_step?
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select_groupby_step? select_having_step?
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select_orderby_step?
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select_limitby_step? select_limit_step?
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2020-08-11 14:36:19 +00:00
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settings_step?
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2019-11-03 11:10:03 +00:00
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;
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select_with_step
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: K_WITH select_expr_list
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;
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select_select_step
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: K_SELECT K_DISTINCT? select_expr_list
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;
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select_from_step
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: K_FROM ( full_table_name
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| table_function
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| subquery
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) select_alias?
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;
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select_array_join_step
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: K_LEFT? K_ARRAY K_JOIN not_empty_expression_list
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;
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select_sample_step
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: K_SAMPLE sample_ratio (K_OFFSET sample_ratio ) ?
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;
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sample_ratio
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: NUMERIC_LITERAL ( DIVIDE NUMERIC_LITERAL ) ?
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;
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select_join_step
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: K_GLOBAL?
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( K_ANY | K_ALL ) ( K_INNER | K_LEFT K_OUTER? | K_RIGHT K_OUTER? | K_FULL K_OUTER? ) K_JOIN select_join_right_part
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( K_USING LPAREN not_empty_expression_list RPAREN
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| K_USING not_empty_expression_list
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// | K_ON expr на самом деле нет.
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)
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| K_GLOBAL? K_CROSS K_JOIN select_join_right_part
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;
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select_join_right_part
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: identifier
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| subquery
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;
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select_prewhere_step
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: K_PREWHERE expression_with_optional_alias
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;
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select_where_step
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: K_WHERE expression_with_optional_alias
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select_groupby_step
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: K_GROUP K_BY not_empty_expression_list ( K_WITH K_TOTALS ) ?
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;
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select_having_step
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: K_HAVING expression_with_optional_alias
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;
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select_orderby_step
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: K_ORDER K_BY order_by_expression_list
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;
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select_limit_step
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: K_LIMIT NUMERIC_LITERAL ( COMMA NUMERIC_LITERAL )?
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;
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select_limitby_step
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: K_LIMIT NUMERIC_LITERAL K_BY not_empty_expression_list
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;
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2020-08-11 14:36:19 +00:00
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settings_step
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2019-11-03 11:10:03 +00:00
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: K_SETTINGS assignment_list
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;
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select_format_step
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: K_FORMAT identifier
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;
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insert_query
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: K_INSERT K_INTO full_table_name
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( K_ID ASSIGN STRING_LITERAL )? // wtf?
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( LPAREN column_name_list RPAREN )?
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( K_VALUES LPAREN literal (COMMA literal )* RPAREN(COMMA LPAREN literal (COMMA literal )* RPAREN)* // ch тут дальше не парсит. а я написал скобки
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| K_FORMAT format_name // ch тут дальше не парсит, только доедает все пробелы или один перевод строки. pushMode()
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| select_query )
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create_query
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: ( K_CREATE | K_ATTACH ) K_TEMPORARY?
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( K_DATABASE ( K_IF K_NOT K_EXISTS ) ? database_name
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| K_TABLE ( K_IF K_NOT K_EXISTS ) ? full_table_name ( K_ON K_CLUSTER cluster_name ) ?
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2020-08-11 14:36:19 +00:00
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( LPAREN column_declaration_list RPAREN engine ( K_AS select_query ) ?
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K_ORDER K_BY LPAREN order_by_expression_list RPAREN
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(K_PARTITION K_BY partitionExpr=expr)?
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(K_SAMPLE K_BY sampleExpr=expr)?
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table_ttl_list?
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settings_step?
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2019-11-03 11:10:03 +00:00
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| engine K_AS ( select_query
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| full_table_name engine? // wtf
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)
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)
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| K_MATERIALIZED? K_VIEW ( K_IF K_NOT K_EXISTS ) ? full_table_name
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( LPAREN column_declaration_list RPAREN ) ? engine? K_POPULATE? K_AS select_query
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)
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;
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rename_query
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: K_RENAME K_TABLE full_table_name K_TO full_table_name ( COMMA full_table_name K_TO full_table_name )* ( K_ON K_CLUSTER cluster_name ) ?
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;
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drop_query
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: ( K_DROP | K_DETACH )
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( K_DATABASE ( K_IF K_EXISTS ) ? database_name ( K_ON K_CLUSTER cluster_name ) ?
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| K_TABLE ( K_IF K_EXISTS ) ? full_table_name ( K_ON K_CLUSTER cluster_name ) ?
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)
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;
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alter_query
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: K_ALTER K_TABLE full_table_name ( K_ON K_CLUSTER cluster_name ) ?
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alter_query_element ( COMMA alter_query_element ) *
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;
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alter_query_element
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: K_ADD K_COLUMN compound_name_type_pair ( K_AFTER column_name ) ?
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| K_DROP K_COLUMN column_name
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| K_MODIFY K_COLUMN compound_name_type_pair
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| K_ATTACH K_PARTITION partition_name
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| K_DETACH K_PARTITION partition_name
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| K_DROP K_PARTITION partition_name
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| K_FETCH K_PARTITION partition_name K_FROM STRING_LITERAL
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| K_FREEZE K_PARTITION partition_name
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;
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clickhouse_type
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: simple_type
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| T_AGGREGATE_FUNCTION LPAREN function_name ( COMMA clickhouse_type ) * RPAREN
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| T_ARRAY LPAREN clickhouse_type RPAREN
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| T_TUPLE LPAREN clickhouse_type ( COMMA clickhouse_type ) * RPAREN
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2020-08-11 01:43:28 +00:00
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| T_NULLABLE LPAREN clickhouse_type RPAREN
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2019-11-03 11:10:03 +00:00
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;
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simple_type
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: T_UINT8
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| T_UINT16
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| T_UINT32
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| T_UINT64
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| T_INT8
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| T_INT16
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| T_INT32
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| T_INT64
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| T_FLOAT32
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| T_FLOAT64
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| T_ENUM8 LPAREN enum_entry ( COMMA enum_entry ) * LPAREN
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| T_ENUM16 LPAREN enum_entry ( COMMA enum_entry ) * LPAREN
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| T_UUID
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| T_DATE
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| T_DATETIME
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| T_STRING
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| T_INTERVAL_YEAR
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| T_INTERVAL_MONTH
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| T_INTERVAL_WEEK
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| T_INTERVAL_DAY
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| T_INTERVAL_HOUR
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| T_INTERVAL_MINUTE
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| T_INTERVAL_SECOND
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| T_NULL
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| T_FIXEDSTRING LPAREN NUMERIC_LITERAL LPAREN
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;
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enum_entry
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: STRING_LITERAL ASSIGN NUMERIC_LITERAL
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;
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use_query
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: K_USE database_name
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;
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set_query
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: K_SET K_GLOBAL? assignment_list
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;
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assignment_list
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: assignment ( COMMA assignment ) *
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assignment
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: identifier ASSIGN literal
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;
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kill_query_query
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: K_KILL K_QUERY K_WHERE expression_with_optional_alias ( K_SYNC | K_ASYNC | K_TEST )
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;
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optimize_query
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: K_OPTIMIZE K_TABLE full_table_name ( K_PARTITION STRING_LITERAL ) ? K_FINAL?
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table_properties_query
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: ( K_EXISTS | ( K_DESCRIBE | K_DESC ) | K_SHOW K_CREATE ) K_TABLE full_table_name query_outfile_step? ( K_FORMAT format_name ) ?
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;
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show_tables_query
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: K_SHOW ( K_DATABASES
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| K_TABLES ( K_FROM database_name ) ? ( K_NOT? K_LIKE STRING_LITERAL ) ? )
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query_outfile_step?
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( K_FORMAT format_name ) ?
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;
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show_processlist_query
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: K_SHOW K_PROCESSLIST query_outfile_step? ( K_FORMAT format_name ) ?
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check_query
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: K_CHECK K_TABLE full_table_name
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// 2. QUERY ELEMENTS
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full_table_name
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: ( database_name DOT ) ? table_name
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;
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partition_name
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: identifier | STRING_LITERAL
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;
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cluster_name
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: identifier | STRING_LITERAL
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;
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database_name
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: identifier
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;
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table_name
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: identifier
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;
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|
|
|
format_name
|
|
|
|
|
|
: identifier
|
|
|
|
|
|
;
|
|
|
|
|
|
|
|
|
|
|
|
query_outfile_step
|
|
|
|
|
|
: K_INTO K_OUTFILE STRING_LITERAL
|
|
|
|
|
|
;
|
|
|
|
|
|
|
|
|
|
|
|
engine
|
|
|
|
|
|
: K_ENGINE ASSIGN identifier_with_optional_parameters
|
|
|
|
|
|
;
|
|
|
|
|
|
|
|
|
|
|
|
identifier_with_optional_parameters
|
|
|
|
|
|
: identifier_with_parameters
|
|
|
|
|
|
| identifier
|
|
|
|
|
|
;
|
|
|
|
|
|
|
|
|
|
|
|
identifier_with_parameters
|
|
|
|
|
|
: function
|
|
|
|
|
|
| nested_table
|
|
|
|
|
|
;
|
|
|
|
|
|
|
|
|
|
|
|
order_by_expression_list
|
|
|
|
|
|
: order_by_element ( COMMA order_by_element ) *
|
|
|
|
|
|
;
|
|
|
|
|
|
|
|
|
|
|
|
order_by_element
|
|
|
|
|
|
: expression_with_optional_alias ( K_DESC | K_DESCENDING | K_ASC | K_ASCENDING ) ? ( K_NULLS ( K_FIRST | K_LAST ) ) ? ( K_COLLATE STRING_LITERAL ) ?
|
|
|
|
|
|
;
|
|
|
|
|
|
|
2020-08-11 14:36:19 +00:00
|
|
|
|
table_ttl_list
|
|
|
|
|
|
: K_TTL table_ttl_declaration ( COMMA table_ttl_declaration ) *
|
|
|
|
|
|
;
|
|
|
|
|
|
|
|
|
|
|
|
table_ttl_declaration
|
|
|
|
|
|
: ttlExpr=expr (K_DELETE | K_TO K_DISK diskVal=STRING_LITERAL | K_TO K_VOLUME volumeVal=STRING_LITERAL)?
|
|
|
|
|
|
;
|
|
|
|
|
|
|
2019-11-03 11:10:03 +00:00
|
|
|
|
nested_table
|
|
|
|
|
|
: identifier LPAREN name_type_pair_list RPAREN
|
|
|
|
|
|
;
|
|
|
|
|
|
|
|
|
|
|
|
name_type_pair_list
|
|
|
|
|
|
: name_type_pair ( COMMA name_type_pair ) *
|
|
|
|
|
|
;
|
|
|
|
|
|
|
|
|
|
|
|
name_type_pair
|
|
|
|
|
|
: identifier column_type
|
|
|
|
|
|
;
|
|
|
|
|
|
|
|
|
|
|
|
compound_name_type_pair
|
|
|
|
|
|
: compound_identifier column_type
|
|
|
|
|
|
;
|
|
|
|
|
|
|
|
|
|
|
|
column_declaration_list
|
|
|
|
|
|
: column_declaration ( COMMA column_declaration ) *
|
|
|
|
|
|
;
|
|
|
|
|
|
|
|
|
|
|
|
column_declaration
|
2020-08-11 14:36:19 +00:00
|
|
|
|
: column_name column_type (( K_DEFAULT | K_MATERIALIZED | K_ALIAS ) expr)? (K_CODEC(expr))? (K_TTL ttlExpr=expr)?
|
2019-11-03 11:10:03 +00:00
|
|
|
|
;
|
|
|
|
|
|
|
|
|
|
|
|
column_name
|
|
|
|
|
|
: identifier
|
|
|
|
|
|
;
|
|
|
|
|
|
|
|
|
|
|
|
column_type
|
|
|
|
|
|
: clickhouse_type
|
|
|
|
|
|
;
|
|
|
|
|
|
|
|
|
|
|
|
column_name_list
|
|
|
|
|
|
: column_name ( COMMA column_name ) *
|
|
|
|
|
|
;
|
|
|
|
|
|
|
|
|
|
|
|
select_expr_list
|
|
|
|
|
|
: select_expr ( COMMA select_expr) *
|
|
|
|
|
|
;
|
|
|
|
|
|
|
|
|
|
|
|
select_expr
|
|
|
|
|
|
: expr select_alias?
|
|
|
|
|
|
;
|
|
|
|
|
|
|
|
|
|
|
|
select_alias
|
|
|
|
|
|
: K_AS? alias_name
|
|
|
|
|
|
;
|
|
|
|
|
|
|
|
|
|
|
|
alias
|
|
|
|
|
|
: K_AS alias_name
|
|
|
|
|
|
;
|
|
|
|
|
|
|
|
|
|
|
|
alias_name
|
|
|
|
|
|
: identifier
|
|
|
|
|
|
;
|
|
|
|
|
|
|
|
|
|
|
|
table_function
|
|
|
|
|
|
: function
|
|
|
|
|
|
;
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
subquery
|
|
|
|
|
|
: LPAREN select_query_main RPAREN
|
|
|
|
|
|
;
|
|
|
|
|
|
|
|
|
|
|
|
expression_with_optional_alias
|
|
|
|
|
|
: expr alias?
|
|
|
|
|
|
;
|
|
|
|
|
|
|
|
|
|
|
|
// EXPRESSIONS
|
|
|
|
|
|
|
|
|
|
|
|
expr
|
|
|
|
|
|
: LPAREN expr RPAREN # ExprParen
|
|
|
|
|
|
| function # ExprFunction
|
|
|
|
|
|
| K_CASE expr? ( K_WHEN expr K_THEN expr ) ( K_WHEN expr K_THEN expr ) * K_ELSE expr K_END # ExprCase
|
|
|
|
|
|
| expr DOT expr # ExprTupleElement
|
|
|
|
|
|
| expr LBRAKET expr RBRAKET # ExprArrayElement
|
|
|
|
|
|
| MINUS expr # ExprUnaryMinus
|
|
|
|
|
|
| K_CAST LPAREN expr K_AS clickhouse_type RPAREN # ExprCast
|
|
|
|
|
|
| expr ( STAR | DIVIDE | PERCENT ) expr # ExprMul
|
|
|
|
|
|
| expr ( PLUS | MINUS ) expr # ExprAdd
|
|
|
|
|
|
| expr CONCAT expr # ExprConcat
|
|
|
|
|
|
| expr K_BETWEEN expr K_AND expr # ExprBetween
|
|
|
|
|
|
| expr ( EQUALS | ASSIGN | NOT_EQUALS | NOT_EQUALS2 | LE | GE | LT | GT | K_LIKE | K_NOT K_LIKE ) expr # ExprLogical
|
|
|
|
|
|
| expr ( K_IN | K_NOT K_IN | K_GLOBAL K_IN | K_GLOBAL K_NOT K_IN ) expr # ExprIn
|
|
|
|
|
|
| expr ( K_IS K_NULL | K_IS K_NOT K_NULL ) # ExprIsNull
|
|
|
|
|
|
| K_INTERVAL expr interval_unit # ExprInterval
|
|
|
|
|
|
| K_NOT expr # ExprNot
|
|
|
|
|
|
| expr K_AND expr # ExprAnd
|
|
|
|
|
|
| expr K_OR expr # ExprOr
|
|
|
|
|
|
| expr QUESTION expr COLON expr # ExprTernary
|
|
|
|
|
|
| ( LPAREN identifier ( COMMA identifier )* RPAREN | identifier ( COMMA identifier )* ) RARROW expr # ExprLambda
|
|
|
|
|
|
| subquery # ExprSubquery
|
|
|
|
|
|
| LPAREN not_empty_expression_list RPAREN # ExprList
|
|
|
|
|
|
| array # ExprArray
|
|
|
|
|
|
| literal # ExprLiteral
|
|
|
|
|
|
| compound_identifier # ExprId
|
|
|
|
|
|
| STAR # ExprStar
|
|
|
|
|
|
| expr alias # ExprWithAlias
|
|
|
|
|
|
;
|
|
|
|
|
|
|
|
|
|
|
|
interval_unit
|
|
|
|
|
|
: K_YEAR
|
|
|
|
|
|
| K_MONTH
|
|
|
|
|
|
| K_WEEK
|
|
|
|
|
|
| K_DAY
|
|
|
|
|
|
| K_HOUR
|
|
|
|
|
|
| K_MINUTE
|
|
|
|
|
|
| K_SECOND
|
|
|
|
|
|
;
|
|
|
|
|
|
expression_list
|
|
|
|
|
|
: ( not_empty_expression_list )?
|
|
|
|
|
|
;
|
|
|
|
|
|
|
|
|
|
|
|
not_empty_expression_list
|
|
|
|
|
|
: expr ( COMMA expr )*
|
|
|
|
|
|
;
|
|
|
|
|
|
|
|
|
|
|
|
array
|
|
|
|
|
|
: LBRAKET expression_list RBRAKET
|
|
|
|
|
|
;
|
|
|
|
|
|
|
|
|
|
|
|
function
|
|
|
|
|
|
: function_name function_parameters? function_arguments
|
|
|
|
|
|
;
|
|
|
|
|
|
|
|
|
|
|
|
function_parameters
|
|
|
|
|
|
: LPAREN ( expr ( COMMA expr )* )? RPAREN
|
|
|
|
|
|
;
|
|
|
|
|
|
function_arguments
|
|
|
|
|
|
: LPAREN ( expr ( COMMA expr )* )? RPAREN
|
|
|
|
|
|
;
|
|
|
|
|
|
|
|
|
|
|
|
function_name
|
|
|
|
|
|
: identifier
|
|
|
|
|
|
;
|
|
|
|
|
|
|
|
|
|
|
|
identifier
|
|
|
|
|
|
: QUOTED_LITERAL
|
|
|
|
|
|
| IDENTIFIER
|
|
|
|
|
|
// в данном случае мы разрешаем ключевым словам выступать в качестве имен колонок или функций.
|
|
|
|
|
|
| simple_type
|
|
|
|
|
|
| keyword
|
|
|
|
|
|
;
|
|
|
|
|
|
|
|
|
|
|
|
keyword
|
|
|
|
|
|
: K_ADD
|
|
|
|
|
|
| K_AFTER
|
|
|
|
|
|
| K_ALL
|
|
|
|
|
|
| K_ALIAS
|
|
|
|
|
|
| K_ALTER
|
|
|
|
|
|
| K_AND
|
|
|
|
|
|
| K_ANY
|
|
|
|
|
|
| K_ARRAY
|
|
|
|
|
|
| K_AS
|
|
|
|
|
|
| K_ASCENDING
|
|
|
|
|
|
| K_ASC
|
|
|
|
|
|
| K_ASYNC
|
|
|
|
|
|
| K_ATTACH
|
|
|
|
|
|
| K_BETWEEN
|
|
|
|
|
|
| K_BY
|
|
|
|
|
|
| K_CASE
|
|
|
|
|
|
| K_CHECK
|
|
|
|
|
|
| K_COLUMN
|
|
|
|
|
|
| K_COLLATE
|
|
|
|
|
|
| K_CREATE
|
|
|
|
|
|
| K_CROSS
|
|
|
|
|
|
| K_DESCRIBE
|
|
|
|
|
|
| K_DESCENDING
|
|
|
|
|
|
| K_DESC
|
|
|
|
|
|
| K_DATABASE
|
|
|
|
|
|
| K_DATABASES
|
|
|
|
|
|
| K_DEFAULT
|
|
|
|
|
|
| K_DETACH
|
|
|
|
|
|
| K_DISTINCT
|
|
|
|
|
|
| K_DROP
|
|
|
|
|
|
| K_ENGINE
|
|
|
|
|
|
| K_ELSE
|
|
|
|
|
|
| K_END
|
|
|
|
|
|
| K_EXISTS
|
|
|
|
|
|
| K_FINAL
|
|
|
|
|
|
| K_FIRST
|
|
|
|
|
|
| K_FROM
|
|
|
|
|
|
| K_FORMAT
|
|
|
|
|
|
| K_FULL
|
|
|
|
|
|
| K_GLOBAL
|
|
|
|
|
|
| K_GROUP
|
|
|
|
|
|
| K_HAVING
|
|
|
|
|
|
| K_ID
|
|
|
|
|
|
| K_IF
|
|
|
|
|
|
| K_INNER
|
|
|
|
|
|
| K_INSERT
|
|
|
|
|
|
| K_INTO
|
|
|
|
|
|
| K_IN
|
|
|
|
|
|
| K_IS
|
|
|
|
|
|
| K_JOIN
|
|
|
|
|
|
| K_KILL
|
|
|
|
|
|
| K_LAST
|
|
|
|
|
|
| K_LEFT
|
|
|
|
|
|
| K_LIKE
|
|
|
|
|
|
| K_LIMIT
|
|
|
|
|
|
| K_MAIN
|
|
|
|
|
|
| K_MATERIALIZED
|
|
|
|
|
|
| K_MODIFY
|
|
|
|
|
|
| K_NOT
|
|
|
|
|
|
| K_NULL
|
|
|
|
|
|
| K_NULLS
|
|
|
|
|
|
| K_OFFSET
|
|
|
|
|
|
| K_ON
|
|
|
|
|
|
| K_OPTIMIZE
|
|
|
|
|
|
| K_ORDER
|
|
|
|
|
|
| K_OR
|
|
|
|
|
|
| K_OUTFILE
|
|
|
|
|
|
| K_PARTITION
|
|
|
|
|
|
| K_POPULATE
|
|
|
|
|
|
| K_PREWHERE
|
|
|
|
|
|
| K_PROCESSLIST
|
|
|
|
|
|
| K_QUERY
|
|
|
|
|
|
| K_RENAME
|
|
|
|
|
|
| K_RETURN
|
|
|
|
|
|
| K_RIGHT
|
|
|
|
|
|
| K_SAMPLE
|
|
|
|
|
|
| K_SELECT
|
|
|
|
|
|
| K_SET
|
|
|
|
|
|
| K_SETTINGS
|
|
|
|
|
|
| K_SHOW
|
|
|
|
|
|
| K_SYNC
|
|
|
|
|
|
| K_TABLE
|
|
|
|
|
|
| K_TABLES
|
|
|
|
|
|
| K_TEMPORARY
|
|
|
|
|
|
| K_TEST
|
|
|
|
|
|
| K_THEN
|
|
|
|
|
|
| K_TOTALS
|
|
|
|
|
|
| K_TO
|
|
|
|
|
|
| K_OUTER
|
|
|
|
|
|
| K_VALUES
|
|
|
|
|
|
| K_VIEW
|
|
|
|
|
|
| K_UNION
|
|
|
|
|
|
| K_USE
|
|
|
|
|
|
| K_USING
|
|
|
|
|
|
| K_WHEN
|
|
|
|
|
|
| K_WHERE
|
|
|
|
|
|
| K_WITH
|
|
|
|
|
|
;
|
|
|
|
|
|
|
|
|
|
|
|
compound_identifier
|
|
|
|
|
|
: identifier DOT identifier
|
|
|
|
|
|
| identifier
|
|
|
|
|
|
;
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
literal
|
|
|
|
|
|
: K_NULL
|
|
|
|
|
|
| NUMERIC_LITERAL
|
|
|
|
|
|
| STRING_LITERAL
|
|
|
|
|
|
;
|
|
|
|
|
|
|
2019-12-19 12:00:47 +00:00
|
|
|
|
err
|
2019-11-03 11:10:03 +00:00
|
|
|
|
: UNEXPECTED_CHAR
|
|
|
|
|
|
{
|
|
|
|
|
|
throw new RuntimeException("UNEXPECTED_CHAR=" + $UNEXPECTED_CHAR.text);
|
|
|
|
|
|
}
|
|
|
|
|
|
;
|
