Github user DaveBirdsall commented on a diff in the pull request:
https://github.com/apache/incubator-trafodion/pull/837#discussion_r89170789
--- Diff:
docs/sql_reference/src/asciidoc/_chapters/sql_functions_and_expressions.adoc ---
@@ -3596,6 +3647,144 @@ SALES REP
```
<<<
+[[is_ipv4_function]]
+== IS_IPV4 Function
+
+For a given argument, if it is a valid IPV4 string, IS_IPV4() returns 1
else returns 0.
+```
+IS_IPV4( expression )
+```
+
+* `_expression_`
++
+specifies an expression that determines the values to include in the
--- End diff --
This paragraph doesn't look right to me. It looks like a discussion of an
aggregate function, which IS_IPV4 is not (as far as I know). Perhaps it should
say, "specifies a string expression to be checked" and nothing more?
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