sunjincheng121 commented on a change in pull request #8087:
[FLINK-12029][table] Add column operations for TableApi
URL: https://github.com/apache/flink/pull/8087#discussion_r274732538
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File path: docs/dev/table/functions.md
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@@ -5800,3 +5800,284 @@ For Table API, please use `_` for spaces (e.g.,
`DAY_TO_HOUR`).
| | `SQL_TSI_SECOND ` _(SQL-only)_ |
{% top %}
+
+Column Operations
Review comment:
I am also hesitating, because all of our functions can also be called
expression, such as `=`, `<`, `>` These are Expressions, but our documentation
is still called Comparison Functions, so I feel Expression is macro, and the
functions are relatively specific. furthermore, we have defined it in
`BuiltInFunctionDefinitions` What's your opinion? @hequn8128
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