GitHub user liancheng opened a pull request:
https://github.com/apache/spark/pull/10757
[SPARK-12799] Simplify various string output for expressions
This PR introduces two major changes:
1. Replacing `Expression.prettyString` with `Expression.sql`
2. Adding trait `NonSQLExpression` extending from `Expression` for
expressions that don't have a SQL representation (e.g. Scala UDF/UDAF and
Java/Scala object expressions used for encoders)
`NonSQLExpression.sql` may return an arbitrary user facing string
representation of the expression.
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/liancheng/spark
spark-12799.simplify-expression-string-methods
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/spark/pull/10757.patch
To close this pull request, make a commit to your master/trunk branch
with (at least) the following in the commit message:
This closes #10757
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commit 072d0e4562131e50b0256cbcc488cbace5618968
Author: Cheng Lian <[email protected]>
Date: 2016-01-14T18:26:14Z
Replaces Expression.prettyString with Expression.sql
commit 1e01b25e4f84e3a9416bc05281c721c657ac36c6
Author: Cheng Lian <[email protected]>
Date: 2016-01-14T18:58:17Z
Fixes Catalyst test failures
commit f71328508f87fc84678de4a12a8470a129044f0a
Author: Cheng Lian <[email protected]>
Date: 2016-01-14T19:36:38Z
SQLBuilder should reject logical plans containing s
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