Github user DaveBirdsall commented on a diff in the pull request:
https://github.com/apache/incubator-trafodion/pull/837#discussion_r89171028
--- 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
+computation of the minimum. The _expression_ cannot contain an aggregate
+function or a subquery. The DISTINCT clause specifies that the MIN
+function operates on distinct values from the one-column table derived
+from the evaluation of _expression_. All nulls are eliminated before
+the function is applied to the set of values. If the result table is
+empty, IS_IPV4 returns NULL.
+See <<expressions,Expressions>>.
+
+[[examples_of_is_ipv4]]
+=== Examples of IS_IPV4
+
+This function returns 1 for the first input argument, since it is a valid
IPV4 string;
+0 for the second input argument, since it is an invalid IPV4 string.
+
+```
+>>SELECT IS_IPV4('10.0.5.9'), IS_IPV4('10.0.5.256') from dual;
+
+(EXPR) (EXPR)
+------- -------
+1 0
+```
+<<<
+[[is_ipv6_function]]
+== IS_IPV6 Function
+
+Returns 1 if the argument is a valid IPv6 address specified as a string, 0
otherwise.
+This function does not consider IPv4 addresses to be valid IPv6 addresses.
+
+```
+IS_IPV6( expression )
+```
+
+* `_expression_`
++
+specifies an expression that determines the values to include in the
--- End diff --
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