5 Commits

Author	SHA1	Message	Date
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
Amos Bird	69204e1d21	Add prefer_column_name_to_alias settings (#22044)	2021-03-30 16:51:45 +03:00
Alexander Kuzmenkov	2905f70cce	fix aliases in partition by/order by	2020-12-28 12:56:38 +03:00
Alexander Kuzmenkov	998bd17877	fix column name clash w/agg fns ... also fix some test references influenced by the explain changes	2020-12-25 07:59:17 +03:00
Ivan Lezhankin	06446b4f08	dbms/ → src/	2020-04-03 18:14:31 +03:00