[ https://issues.apache.org/jira/browse/SPARK-12454?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Yin Huai updated SPARK-12454:
-----------------------------
Description:
ExpressionDescription is a annotation that contains doc of a function and when users use {{describe
function}}, users can see the doc defined in this annotation. You can take a look at {{Upper}}
as an example.
However, we still have lots of expression that do not have ExpressionDescription. It will
be great to take a look at expressions registered in FunctionRegistry and add ExpressionDescription
to those expression that do not have it..
A list of expressions (and their categories) registered in function registry can be found
at https://github.com/apache/spark/blob/master/sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/analysis/FunctionRegistry.scala#L117-L296.
was:
ExpressionDescription is a annotation that contains doc of a function and when users use {{describe
function}}, users can see the doc defined in this annotation. You can take a look at {{Upper}}
as an example.
However, we still have lots of expression that do not have ExpressionDescription. It will
be great to take a look at expressions registered in FunctionRegistry and add ExpressionDescription
to those expression that do not have it..
> Add ExpressionDescription to expressions are registered in FunctionRegistry
> ---------------------------------------------------------------------------
>
> Key: SPARK-12454
> URL: https://issues.apache.org/jira/browse/SPARK-12454
> Project: Spark
> Issue Type: Improvement
> Components: SQL
> Reporter: Yin Huai
>
> ExpressionDescription is a annotation that contains doc of a function and when users
use {{describe function}}, users can see the doc defined in this annotation. You can take
a look at {{Upper}} as an example.
> However, we still have lots of expression that do not have ExpressionDescription. It
will be great to take a look at expressions registered in FunctionRegistry and add ExpressionDescription
to those expression that do not have it..
> A list of expressions (and their categories) registered in function registry can be found
at https://github.com/apache/spark/blob/master/sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/analysis/FunctionRegistry.scala#L117-L296.
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