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ASF GitHub Bot commented on TRAFODION-2355: ------------------------------------------- Github user DaveBirdsall commented on a diff in the pull request: https://github.com/apache/incubator-trafodion/pull/837#discussion_r89910126 --- Diff: docs/sql_reference/src/asciidoc/_chapters/sql_functions_and_expressions.adoc --- @@ -3658,12 +3658,10 @@ 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. +validation of the IP address. The _expression_ cannot contain an aggregate +function or a subquery. All nulls are eliminated before the function is +applied to the set of values. If the result table is empty, IS_IPV4 --- End diff -- The last two sentences appear to be discussing sets or tables of values, but IS_IPV4 just takes a single value. Consider replacing "All nulls... returns NULL" with "If the input value is NULL, IS_IPV4 returns NULL." Incidentally, just for fun I tried doing select is_ipv4(max(b)) from temp1, where temp1 is a table containing a char column b, and I got an assertion failure. > document about IP address functions and hashing functions > --------------------------------------------------------- > > Key: TRAFODION-2355 > URL: https://issues.apache.org/jira/browse/TRAFODION-2355 > Project: Apache Trafodion > Issue Type: Documentation > Reporter: liu ming > Assignee: liu ming > Priority: Minor > > Some new built-in functions were added, and need document. > MD5 > CRC32 > SHA1 > SHA2 > IS_IPV4 > IS_IPV6 > INET_ATON > INET_NTOA -- This message was sent by Atlassian JIRA (v6.3.4#6332)