9 Commits

Author	SHA1	Message	Date
Nikolai Kochetov	afc1fe7f3d	Make ContextPtr const by default.	2021-05-31 17:49:02 +03:00
feng lv	c6f8ab9826	fix	2021-05-13 02:05:53 +00:00
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
feng lv	4ffe199d39	Implement table comments	2021-04-23 12:18:23 +00:00
Ivan	495c6e03aa	Replace all Context references with std::weak_ptr (#22297) ... * Replace all Context references with std::weak_ptr * Fix shared context captured by value * Fix build * Fix Context with named sessions * Fix copy context * Fix gcc build * Merge with master and fix build * Fix gcc-9 build	2021-04-11 02:33:54 +03:00
Azat Khuzhin	714d5a067a	Expose supports_parallel_insert via system.table_engines	2021-01-08 14:57:24 +03:00
Azat Khuzhin	c7d0c2d075	Add some comments for StorageFeatures	2021-01-08 14:36:42 +03:00
Vitaly Baranov	e573549945	Rework access rights for table functions.	2020-04-07 23:31:59 +03:00
Ivan Lezhankin	06446b4f08	dbms/ → src/	2020-04-03 18:14:31 +03:00