[jira] [Created] (SPARK-31907) Spark SQL functions documentation refers to SQL API documentation without linking to it

["Guilherme Beltramini (Jira)" <ji...@apache.org>]

Guilherme Beltramini created SPARK-31907:
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             Summary: Spark SQL functions documentation refers to SQL API documentation without linking to it
                 Key: SPARK-31907
                 URL: https://issues.apache.org/jira/browse/SPARK-31907
             Project: Spark
          Issue Type: Documentation
          Components: Documentation
    Affects Versions: 2.4.5
            Reporter: Guilherme Beltramini


h2. Problem description

[The org.apache.spark.sql.functions documentation|http://spark.apache.org/docs/latest/api/scala/index.html#org.apache.spark.sql.functions$] claims that:
{quote}(...) You can find the entire list of functions at SQL API documentation.

(...)

regr_count is an example of a function that is built-in but not defined here, because it is less commonly used. To invoke it, use expr("regr_count(yCol, xCol)").
{quote}
h2. Issue 1

I had to roam a little bit to arrive at: [https://spark.apache.org/docs/latest/api/sql/index.html]. Is this the "SQL API documentation" to which the text refers? If so, I suggest adding this link there.
h2. Issue 2

The documentation cites the function 'regr_count', but I couldn't find its documentation in the SQL API https://spark.apache.org/docs/latest/api/sql/index.html. The issue https://issues.apache.org/jira/browse/SPARK-23907 is related to this function. Where is the documentation for this function? 

 



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