[jira] [Created] (FLINK-13757) Document error for `logical functions`

[Shang Yuanchun (Jira)]

hehuiyuan created FLINK-13757:
---------------------------------

             Summary: Document error for  `logical functions`
                 Key: FLINK-13757
                 URL: https://issues.apache.org/jira/browse/FLINK-13757
             Project: Flink
          Issue Type: Wish
          Components: Documentation
            Reporter: hehuiyuan
         Attachments: image-2019-08-17-11-58-53-247.png

[https://ci.apache.org/projects/flink/flink-docs-release-1.8/dev/table/functions.html#logical-functions]

False:
|{{boolean IS NOT TRUE}}|Returns TRUE if _boolean_ is FALSE or UNKNOWN; returns FALSE if _boolean_ is FALSE.|

True:
|{{boolean IS NOT TRUE}}|Returns TRUE if _boolean_ is FALSE or UNKNOWN; returns FALSE if _boolean_ is TURE.|

[!image-2019-08-17-11-58-53-247.png!|https://ci.apache.org/projects/flink/flink-docs-release-1.8/dev/table/functions.html#logical-functions]



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