8 Commits

Author	SHA1	Message	Date
Robert Schulze	e25ca139cd	Implement SQL functions (NOT) (I)LIKE() + MATCH() with non-const needles ... With this commit, SQL functions LIKE and MATCH and their variants can work with non-const needle arguments. E.g. create table tab (id UInt32, haystack String, needle String) engine = MergeTree() order by id; insert into tab values (1, 'Hello', '%ell%') (2, 'World', '%orl%') select id, haystack, needle, like(haystack, needle) from tab; For that, methods vectorVector() and vectorFixedVector() were added to MatchImpl. The existing code for const needles has an optimization where the compiled regexp is cached. The new code expects a different needle per row and consequently does not cache the regexp.	2022-05-23 09:41:28 +02:00
Robert Schulze	4829ae8380	Replace overly clever const argument logic by something simpler ... The previous logic was smart but too inflexible to support the next commits. Replace by a simple pushdown logic where string search implementations return their const arguments instead of having the common class figure these out based on properties/traits.	2022-05-22 17:50:38 +02:00
Robert Schulze	0299cc87e4	Improve naming consistency of string search code ... Just renamings, nothing major ...	2022-05-22 17:50:38 +02:00
Vasily Nemkov	2c6b9aa174	Better exception messages for some String-related functions	2021-09-26 08:18:37 +03:00
vdimir	7260009978	Fix argument handling in string search functions	2020-08-04 10:10:50 +03:00
vdimir	368314b930	Fix style in PositionImpl and FunctionsStringSearch	2020-08-02 14:24:39 +00:00
vdimir	9ed7df64cd	Support 'start_pos' argument in 'position' function	2020-08-02 12:56:18 +00:00
Ivan Lezhankin	06446b4f08	dbms/ → src/	2020-04-03 18:14:31 +03:00