minghong 4174d5a707 [opt](nereids) optimze aggregation estimation #18607 ...

`select count(*) from T group by A, B`
suppose `ndv(A) > ndv(B)`
the estimated row count of aggregate is between ndv(A) and ndv(A) * ndv(B)

in previous version, we choose upper bound, that is ndv(A) * ndv(B). The drawback of this choice is the estimated row is often bigger that row count of T.

In this version, we choose the lower bound.

2023-04-14 16:13:25 +08:00

..

common

[Feature](vec)(quantile_state): support quantile state in vectorized engine (#16562)

2023-03-14 10:54:04 +08:00

conf

[test](jdbc catalog) add clickhouse jdbc catalog base type test (#18007)

2023-04-03 20:18:36 +08:00

data

[opt](nereids) optimze aggregation estimation #18607

2023-04-14 16:13:25 +08:00

framework

[chore](regression) print exception along with error sql when run sql file (#18374)

2023-04-07 14:19:47 +08:00

java-udf-src

[vectorized](udaf) fix java-udaf case is unstable with fuzzy mode #18146

2023-03-28 09:30:49 +08:00

pipeline

[Bug](date) fix regression test test_date_function (#18564)

2023-04-12 14:16:30 +08:00

plugins

[regression-test] add grouping sets test case (#18194)

2023-03-31 11:00:38 +08:00

script

[Regression](planner) Add tpch plan check (#11181)

2022-07-29 10:45:36 +08:00

suites

[fix](Nereids) get_json_bigint should return bigint type (#18626)

2023-04-14 14:01:44 +08:00

certificate.p12

[feature](mysql) Support secure MySQL connection to FE (#17138)

2023-03-04 12:14:48 +08:00