Robert Schulze 81bb2242fd Fix countSubstrings() & position() on patterns with 0-bytes ... SQL functions countSubstrings(), countSubstringsCaseInsensitive(), countSubstringsUTF8(), position(), positionCaseInsensitive(), positionUTF8() with non-const pattern argument use fallback sorters LibCASCIICaseSensitiveStringSearcher and LibCASCIICaseInsensitiveStringSearcher which call ::strstr(), resp. ::strcasestr(). These functions assume that the haystack is 0-terminated and they even document that. However, the callers did not check if the haystack contains 0-byte (perhaps because its sort of expensive). As a consequence, if the haystack contained a zero byte in it's payload, matches behind this zero byte were ignored. create table t (id UInt32, pattern String) engine = MergeTree() order by id; insert into t values (1, 'x'); select countSubstrings('aaaxxxaa\0xxx', pattern) from t; We returned 3 before this commit, now we return 6		2022-06-29 21:41:18 +00:00
..
0_stateless	Fix countSubstrings() & position() on patterns with 0-bytes	2022-06-29 21:41:18 +00:00
1_stateful	Merge branch 'master' into deprecate_ordinary_database	2022-06-27 14:46:59 +02:00
bugs
shell_config.sh	Merge branch 'master' into cleanup_garbage_in_store_dir	2022-06-23 21:43:28 +02:00