doris

Files

EmmyMiao87 e5cc6de294 [SQL Planner] Column Pruning under count start (#5410 )

When there is count(*) function in query, we only need to scan the smallest column.
For example:
Query: select count(*) from (select k1, k2, k3 from base) tmp;
Only k1 which is the smallest column should be scanned.
The remaining columns (k2, k3) should be pruning.

This pr achieves this optimization of column pruning.
Fixed #5409

2021-02-25 09:52:36 +08:00

fe-common

[Enhancement] move common codes from fe-core to fe-common and remove log4j1 (#5317 ) (#5318 )

2021-02-04 13:41:03 +08:00

fe-core

[SQL Planner] Column Pruning under count start (#5410 )

2021-02-25 09:52:36 +08:00

spark-dpp

[Enhancement] move common codes from fe-core to fe-common and remove log4j1 (#5317 ) (#5318 )

2021-02-04 13:41:03 +08:00

checkstyle-apache-header.txt

Add Checkstyle for doris-fe (#1353 )

2019-06-21 21:45:54 +08:00

checkstyle.xml

Add classes related to "tag". (#2343 )

2019-12-15 20:13:29 +08:00

pom.xml

升级jackson版本号 (#5373 )

2021-02-23 10:43:25 +08:00

README

[CodeRefactor] Modify FE modules (#4146 )

2020-07-29 16:18:05 +08:00

README

# fe-common

This module is used to store some common classes of other modules.

# spark-dpp

This module is Spark DPP program, used for Spark Load function.
Depends: fe-common

# fe-core

This module is the main process module of FE.
Depends: fe-common, spark-dpp