340784e294
This pull request includes some implementations of the statistics(#6370), it adds statistics module related syntax. The current syntax for collecting statistics will not collect statistics (It will collect statistics until test is stable). - `ANALYZE` syntax(collect statistics) ```SQL ANALYZE [[ db_name.tb_name ] [( column_name [, ...] )], ...] [PARTITIONS(...)] [ PROPERTIES(...) ] ``` > db_name.tb_name: collect table and column statistics from tb_name. > column_name: collect column statistics from column_name. > properties: properties of statistics jobs. example： ```SQL ANALYZE; -- collect statistics for all tables in the current database ANALYZE table1(pv, citycode); -- collect pv and citycode statistics for table1 ANALYZE test.table2 PARTITIONS(partition1); -- collect statistics for partition1 of table2 ``` - `SHOW ANALYZE` syntax(show statistics job info) ```SQL SHOW ANALYZE [TABLE | ID] [ WHERE [STATE = ["PENDING"|"SCHEDULING"|"RUNNING"|"FINISHED"|"FAILED"|"CANCELLED"]] ] [ORDER BY ...] [LIMIT limit][OFFSET offset]; ``` - `SHOW TABLE STATS`syntax(show table statistics) ```SQL SHOW TABLE STATS [ db_name.tb_name ] ``` - `SHOW COLUMN STATS` syntax(show column statistics) ```SQL SHOW COLUMN STATS [ db_name.tb_name ] ```
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