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https://issues.apache.org/jira/browse/SPARK-12459?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15069400#comment-15069400
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Huaxin Gao commented on SPARK-12459:
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Hi Yi Huai,
I added ExpressionDescription for most of the string functions except the
following:
Contains
EndsWith
FindInSet
StartsWith
StringSpace
I didn't see the corresponding functions in functions.scala, so I didn't add
ExpressionDescription for these 5 functions.
Also, for base64 and decode. I couldn't figure out what to use for binary
String, so I just use 'test' as the following, is this OK with you?
For unbase64
@ExpressionDescription(
usage = "_FUNC_(string) - Computes the BASE64 encoding of the binary string
and returns it",
extended = "> SELECT _FUNC_('test');\n 'dGVzdA=='")
For decode
@ExpressionDescription(
usage = "_FUNC_(binary, charset) - Computes the binary into a string " +
"using the provided character set (one of 'US-ASCII', 'ISO-8859-1',
'UTF-8', 'UTF-16BE', " +
"'UTF-16LE', 'UTF-16'). If either argument is null, the result will also be
null",
extended = "> SELECT _FUNC_('test', 'UTF-8'));\n 'test")
> Add ExpressionDescription to string functions
> ---------------------------------------------
>
> Key: SPARK-12459
> URL: https://issues.apache.org/jira/browse/SPARK-12459
> Project: Spark
> Issue Type: Sub-task
> Components: SQL
> Reporter: Yin Huai
>
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