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| author | windpiger <songjun@outlook.com> | 2017-02-19 16:50:16 -0800 |
|---|---|---|
| committer | Xiao Li <gatorsmile@gmail.com> | 2017-02-19 16:50:16 -0800 |
| commit | 65fe902e13153ad73a3026a66e73c93393df1abb (patch) | |
| tree | 92f595402705f0d3b7d2c1841c6ce1a6da7593de /streaming/src/main/scala | |
| parent | 1487c9af20a333ead55955acf4c0aa323bea0d07 (diff) | |
| download | spark-65fe902e13153ad73a3026a66e73c93393df1abb.tar.gz spark-65fe902e13153ad73a3026a66e73c93393df1abb.tar.bz2 spark-65fe902e13153ad73a3026a66e73c93393df1abb.zip | |
[SPARK-19598][SQL] Remove the alias parameter in UnresolvedRelation
## What changes were proposed in this pull request?
Remove the alias parameter in `UnresolvedRelation`, and use `SubqueryAlias` to replace it.
This can simplify some `match case` situations.
For example, the broadcast hint pull request can have one fewer case https://github.com/apache/spark/blob/master/sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/analysis/ResolveHints.scala#L57-L61
## How was this patch tested?
add some unit tests
Author: windpiger <songjun@outlook.com>
Closes #16956 from windpiger/removeUnresolveTableAlias.
Diffstat (limited to 'streaming/src/main/scala')
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