9 Commits

Author	SHA1	Message	Date
Vasily Nemkov	e5ec81f7cd	Single quotes around column names	2020-12-19 20:58:23 +02:00
Vasily Nemkov	e166aae3f9	Using CSV-like strings for list of columns to deduplicate by instead of JSON-like notation.	2020-12-18 13:44:56 +02:00
Vasily Nemkov	70ea507dae	OPTIMIZE DEDUPLICATE BY columns ... Extended OPTIMIZE ... DEDUPLICATE syntax to allow explicit (or implicit with asterisk/column transformers) list of columns to check for duplicates on. Following syntax variants are now supported: OPTIMIZE TABLE table DEDUPLICATE; -- the old one OPTIMIZE TABLE table DEDUPLICATE BY *; OPTIMIZE TABLE table DEDUPLICATE BY * EXCEPT colX; OPTIMIZE TABLE table DEDUPLICATE BY * EXCEPT (colX, colY); OPTIMIZE TABLE table DEDUPLICATE BY col1,col2,col3; OPTIMIZE TABLE table DEDUPLICATE BY COLUMNS('column-matched-by-regex'); OPTIMIZE TABLE table DEDUPLICATE BY COLUMNS('column-matched-by-regex') EXCEPT colX; OPTIMIZE TABLE table DEDUPLICATE BY COLUMNS('column-matched-by-regex') EXCEPT (colX, colY); Note that * behaves just like in SELECT: MATERIALIZED, and ALIAS columns are not used for expansion. Also, it is an error to specify empty list of columns, or write an expression that results in an empty list of columns, or deduplicate by an ALIAS column. Column transformers other than EXCEPT are not supported.	2020-12-07 09:44:07 +03:00
Nicolae Vartolomei	040aba9f85	Add uuid.txt to checksums for parts stored on disk ... We are breaking backwards compatibility anyway (but agted by a setting)	2020-11-20 13:49:17 +00:00
Nicolae Vartolomei	94293ca3ce	Assign UUIDs to parts only when configured to do so ... Avoid breaking backwards compatibility by default for now.	2020-11-20 13:49:17 +00:00
Nicolae Vartolomei	746f8e45f5	All new parts must have uuids	2020-11-19 13:18:03 +00:00
alesapin	e42d0f60da	Fix several bugs	2020-09-04 14:27:27 +03:00
alesapin	f4c7ff0376	Add fixed size of Merge TTLS	2020-09-03 16:00:13 +03:00
Ivan Lezhankin	06446b4f08	dbms/ → src/	2020-04-03 18:14:31 +03:00