[IMPALA-10538] Document the newly added scale argument of ndv function

• Type: Documentation
• Status: Resolved
• Priority: Critical
• Resolution: Fixed
• Fix Version/s: Impala 4.0.0
• Component/s: Docs
• Target Version: Impala 4.0.0
• Epic Color: ghx-label-14
• Assignee: shajini thayasingh
• Reporter: Quanlong Huang
• Created: 23/Feb/21 01:39
• Updated: 12/Apr/21 00:45
• Resolved: 12/Apr/21 00:45

Description

We add a new argument, scale, to the ndv() function in IMPALA-2658 to control the precision. We need to update the related documents and give more examples in

https://github.com/apache/impala/blob/d271baa33da1a02aa6ffc47b0380dc62239107b4/docs/topics/impala_ndv.xml

Web link is https://impala.apache.org/docs/build/html/topics/impala_ndv.html

cc sql_forever who is the author of this great feature. He could provide more details.

Issue Links

• relates to: IMPALA-2658 Extend the NDV function to accept a precision