6 Commits

Author	SHA1	Message	Date
Roman Nozdrin	fd9fe182d5	MCOL-5199 This patch solves the overal performance degradation introduced with a new way of char columns hashing ... in aggregation code The patch disables padding that forces hasher to calculate over the whole 2k buffer. This patch also moves hashing code into the common place where it belongs.	2022-08-22 13:39:45 +00:00
Leonid Fedorov	7c808317dc	clang format apply	2022-02-11 12:24:40 +00:00
Alexander Barkov	9794f24369	MCOL-4801 Replace Row methods getStringLength() and getStringPointer() to getConstString()	2021-07-06 21:15:32 +04:00
Alexander Barkov	69da915160	MCOL-4531 New string-to-decimal conversion implementation ... This change fixes: MCOL-4462 CAST(varchar_expr AS DECIMAL(M,N)) returns a wrong result MCOL-4500 Bit functions processing throws internally trying to cast char into decimal representation MCOL-4532 CAST(AS DECIMAL) returns a garbage for large values Also, this change makes string-to-decimal conversion 5-10 times faster, depending on exact data. Performance implemenent is achieved by the fact that (unlike in the old implementation), the new version does not do any "string" object copying.	2021-02-09 13:02:27 +04:00
Alexander Barkov	b08d719593	A cleanup for MCOL-4064 Make JOIN collation aware ... A non-JOIN condition like `WHERE c1=c2` (with c1 and c2 being columns of the same table) was not collation-aware yet after the main patches for MCOL-4064. Additionally fixing StrFilterCmd::compare*() to address this.	2020-12-08 16:43:07 +04:00
Alexander Barkov	52c5af054a	Part#2 MCOL-495 Make string comparison not case sensitive ... Fixing field='str' for short (non-Dict) CHAR and VARCHAR data types.	2020-12-04 08:40:29 +04:00