6 Commits

Author	SHA1	Message	Date
Alexander Tokmakov	bf2b6c2c37	Merge branch 'master' into mvcc_prototype	2022-01-10 19:53:50 +03:00
Alexander Tokmakov	187c43eba8	rename Committed state to Active	2021-12-30 23:45:38 +03:00
Alexander Tokmakov	d7ad72838c	Merge branch 'master' into mvcc_prototype	2021-12-14 23:07:52 +03:00
Nikita Mikhaylov	dbf5091016	Parallel reading from replicas (#29279)	2021-12-09 13:39:28 +03:00
Alexander Tokmakov	9a9e95172f	add test with mv	2021-06-02 23:03:44 +03:00
Amos Bird	264cff6415	Projections ... TODO (suggested by Nikolai) 1. Build query plan fro current query (inside storage::read) up to WithMergableState 2. Check, that plan is simple enough: Aggregating - Expression - Filter - ReadFromStorage (or simplier) 3. Check, that filter is the same as filter in projection, and also expression calculates the same aggregation keys as in projection 4. Return WithMergableState if projection applies 3 will be easier to do with ActionsDAG, cause it sees all functions, and dependencies are direct (but it is possible with ExpressionActions also) Also need to figure out how prewhere works for projections, and row_filter_policies. wip	2021-05-11 18:12:23 +08:00