John Russell has posted comments on this change. ( 
http://gerrit.cloudera.org:8080/8768 )

Change subject: IMPALA-5317: [DOCS] Doc for DATE_TRUNC() function
......................................................................


Patch Set 2:

(3 comments)

http://gerrit.cloudera.org:8080/#/c/8768/2/docs/topics/impala_datetime_functions.xml
File docs/topics/impala_datetime_functions.xml:

http://gerrit.cloudera.org:8080/#/c/8768/2/docs/topics/impala_datetime_functions.xml@400
PS2, Line 400: Strips off fields from a <codeph>TIMESTAMP</codeph> value
> Can we use "truncates" not "strips off"?
Done


http://gerrit.cloudera.org:8080/#/c/8768/2/docs/topics/impala_datetime_functions.xml@406
PS2, Line 406:
Tabs! Don't know how those got in there.


http://gerrit.cloudera.org:8080/#/c/8768/2/docs/topics/impala_datetime_functions.xml@455
PS2, Line 455: select now(), date_trunc('microseconds', now());
             : 
+-------------------------------+-----------------------------------+
             : | now()                         | date_trunc('microseconds', 
now()) |
             : 
+-------------------------------+-----------------------------------+
             : | 2017-12-05 13:58:04.565403000 | 2017-12-05 13:58:04.565403000  
   |
             : 
+-------------------------------+-----------------------------------+
> now() never returns any nanosecond values so probably not a great example
Wow, even after I added the Note: above, I was fooled by the singular/plural 
business. I.e. thinking that 'microseconds' must set microseconds to zero 
rather setting everything _below_ a microsecond to zero. I'll add a little 
wording earlier on to reinforce where the precision boundary is.



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Gerrit-Project: Impala-ASF
Gerrit-Branch: master
Gerrit-MessageType: comment
Gerrit-Change-Id: Ifcf38903bb10db12cbb8d73a2dc875aef29cd359
Gerrit-Change-Number: 8768
Gerrit-PatchSet: 2
Gerrit-Owner: John Russell <[email protected]>
Gerrit-Reviewer: Alex Behm <[email protected]>
Gerrit-Reviewer: Greg Rahn <[email protected]>
Gerrit-Reviewer: John Russell <[email protected]>
Gerrit-Reviewer: sandeep akinapelli <[email protected]>
Gerrit-Comment-Date: Mon, 11 Dec 2017 19:46:18 +0000
Gerrit-HasComments: Yes

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