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20 Commits

Author SHA1 Message Date
Alexey Milovidov
8f57216180 Progress on development 2021-08-25 00:45:58 +03:00
Alexey Milovidov
d184b79bba Progress on async reads. 2021-08-16 03:00:32 +03:00
kssenii
2a631aaf08 Final fixes 2021-05-29 00:34:44 +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
Anton Popov
d7200ee2ed minor changes 2021-01-13 02:20:32 +03:00
Anton Popov
66e0add2ba fix nested 2020-12-07 16:35:12 +03:00
Anton Popov
1f65478b49 implement nested with multiple nesting 2020-11-21 20:27:42 +03:00
Anton Popov
600dbc9387 fix rename of columns 2020-10-23 20:57:17 +03:00
Anton Popov
cb4801e3be allow to read subcolumns of complex types 2020-09-18 02:12:43 +03:00
alesapin
2fc80189af Add default compression codec to merge tree data part 2020-08-26 18:29:46 +03:00
Anton Popov
53e955c6dd several fixes 2020-06-29 23:36:18 +03:00
alesapin
e9c47dc89c Merge branch 'master' into CurtizJ-polymorphic-parts 2020-06-26 14:27:19 +03:00
alesapin
dffdece350 getColumns in StorageInMemoryMetadta (only compilable) 2020-06-17 19:39:58 +03:00
alesapin
1afdebeebd Primary key in storage metadata 2020-06-17 15:39:20 +03:00
Anton Popov
1ce09e1faa Merge remote-tracking branch 'upstream/master' into polymorphic-parts 2020-06-03 16:27:54 +03:00
Gleb Novikov
1235c36f3e data_part instead of volume in IMergeTreeDataPartWriter (as it done in IMergeTreeReader) 2020-05-10 16:33:27 +03:00
Gleb Novikov
390b39b272 VolumePtr instead of DiskPtr in MergeTreeData* 2020-05-10 00:24:15 +03:00
Anton Popov
391f7c34be in memory parts: basic read/write 2020-04-17 20:30:46 +03:00
Anton Popov
9a2855fae7 in-memory parts: preparation 2020-04-17 15:15:20 +03:00
Ivan Lezhankin
06446b4f08 dbms/ → src/ 2020-04-03 18:14:31 +03:00