5 Commits

Author	SHA1	Message	Date
Ivan	315ff4f0d9	ANTLR4 Grammar for ClickHouse and new parser (#11298)	2020-12-04 05:15:44 +03:00
Alexey Milovidov	1a487f88d6	Minor changes	2020-08-03 00:24:16 +03:00
Nicolae Vartolomei	c95d09aed0	Add a test to cover non-const tuple elemenets (just in case)	2020-07-01 11:01:47 +01:00
Nicolae Vartolomei	b1d2d55cba	Add explicit test for a case where AST hashes collide for different prepared sets	2020-06-30 18:19:20 +01:00
Nicolae Vartolomei	8f1845185e	Try fix pk in tuple performance ... Possible approach for fixing #10574 The problem is that prepared sets are built correctly, it is a hash map of key -> set where key is a hash of AST and list of data types (when we a list of tuples of literals). However, when the key is built from the index to try and find if there exists a prepared set that would match it looks for data types of the primary key (see how data_types is populated) because the primary key has only one field (v in my example) it can not find the prepared set. The patch looks for any prepared indexes where data types match for the subset of fields found in primary key, we are not interested in other fields anyway for the purpose of primary key pruning.	2020-06-30 16:33:38 +01:00