Github user SparkQA commented on the pull request: https://github.com/apache/spark/pull/6762#issuecomment-112074260 [Test build #34940 has finished](https://amplab.cs.berkeley.edu/jenkins/job/SparkPullRequestBuilder/34940/console) for PR 6762 at commit [`6677186`](https://github.com/apache/spark/commit/667718653f9632ec2ac48e5352d4920ab3825313). * This patch **fails Scala style tests**. * This patch merges cleanly. * This patch adds the following public classes _(experimental)_: * `trait String2StringExpression extends ExpectsInputTypes ` * `case class Upper(child: Expression) extends UnaryExpression with String2StringExpression ` * `case class Lower(child: Expression) extends UnaryExpression with String2StringExpression ` * `case class StringTrim(child: Expression)` * `case class StringTrimLeft(child: Expression)` * `case class StringTrimRight(child: Expression)` * `case class StringInstr(str: Expression, substr: Expression)` * `case class StringLocate(substr: Expression, str: Expression, start: Expression)` * `case class StringLPad(str: Expression, len: Expression, pad: Expression)` * `case class StringRPad(str: Expression, len: Expression, pad: Expression)` * `case class StringFormat(children: Expression*) extends Expression ` * `case class StringRepeat(str: Expression, times: Expression)` * `case class StringReverse(child: Expression) extends UnaryExpression with String2StringExpression ` * `case class StringSpace(child: Expression) extends UnaryExpression with ExpectsInputTypes ` * `case class StringSplit(str: Expression, pattern: Expression)`
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