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| author | Nong Li <nongli@gmail.com> | 2015-11-02 20:32:08 -0800 |
|---|---|---|
| committer | Yin Huai <yhuai@databricks.com> | 2015-11-02 20:32:08 -0800 |
| commit | 9cb5c731dadff9539126362827a258d6b65754bb (patch) | |
| tree | acc95aefbc77ba4c6557b15cdbfb6d09ec2118d4 /graphx/src | |
| parent | 2cef1bb0b560a03aa7308f694b0c66347b90c9ea (diff) | |
| download | spark-9cb5c731dadff9539126362827a258d6b65754bb.tar.gz spark-9cb5c731dadff9539126362827a258d6b65754bb.tar.bz2 spark-9cb5c731dadff9539126362827a258d6b65754bb.zip | |
[SPARK-11329][SQL] Support star expansion for structs.
1. Supporting expanding structs in Projections. i.e.
"SELECT s.*" where s is a struct type.
This is fixed by allowing the expand function to handle structs in addition to tables.
2. Supporting expanding * inside aggregate functions of structs.
"SELECT max(struct(col1, structCol.*))"
This requires recursively expanding the expressions. In this case, it it the aggregate
expression "max(...)" and we need to recursively expand its children inputs.
Author: Nong Li <nongli@gmail.com>
Closes #9343 from nongli/spark-11329.
Diffstat (limited to 'graphx/src')
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