Igor Nikonov
739ff34c6e
Add some tests, still not sure about optimize_memory_usage option
2022-07-22 22:48:26 +00:00
Igor Nikonov
7db5d54820
Adopt to the case when not all columns in distinct are part of sorting
...
description
2022-07-21 21:04:58 +00:00
Igor Nikonov
122a1123b2
- disable the worst case for distinct in order in perf test for now
...
+ functional test for query with the worst perfomance
+ debug logging in DistinctStep
2022-07-21 15:03:19 +00:00
Igor Nikonov
9ef8ff5a31
Addressing review comments
2022-07-01 22:50:00 +00:00
Igor Nikonov
488ee75fc4
+ use DistinctSorted for final distinct step
...
+ fix performance tests
2022-06-30 13:03:39 +00:00
Igor Nikonov
d435532c68
Adapt range search algorithm to high cardinality case
...
+ range search done in steps of some number of rows.
Controled by new
setting `distinct_in_order_range_search_step`. By default 0, i.e.
whole chunk
+ before start binary search, linear probing is done on each step (32
rows currently)
2022-06-29 23:30:35 +00:00
Igor Nikonov
3627c6ff36
Perf tests with high cardinality
2022-06-29 13:13:39 +00:00
