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| author | Bruce Momjian <bruce@momjian.us> | 2018-04-02 16:41:46 -0400 |
|---|---|---|
| committer | Bruce Momjian <bruce@momjian.us> | 2018-04-02 16:41:46 -0400 |
| commit | b71741b425787644bbf8b8d469622fb315892cb0 (patch) | |
| tree | 4ddf2f35b9ec458c554c4b809a3f342215b26053 | |
| parent | b7537ffb1ab59b3fedf6d01e6074fa2d465756c3 (diff) | |
doc: document "IS NOT DOCUMENT"
Reported-by: scott.ure@caseware.com
Discussion: https://postgr.es/m/152056505045.4963.16783351661813640274@wrigleys.postgresql.org
Author: Euler Taveira
Backpatch-through: 9.3
| -rw-r--r-- | doc/src/sgml/func.sgml | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/doc/src/sgml/func.sgml b/doc/src/sgml/func.sgml index a4f312966fd..6f89512c040 100644 --- a/doc/src/sgml/func.sgml +++ b/doc/src/sgml/func.sgml @@ -9712,6 +9712,24 @@ SELECT xmlagg(x) FROM (SELECT * FROM test ORDER BY y DESC) AS tab; </para> </sect3> + <sect3> + <title><literal>IS NOT DOCUMENT</literal></title> + + <indexterm> + <primary>IS NOT DOCUMENT</primary> + </indexterm> + +<synopsis> +<replaceable>xml</replaceable> IS NOT DOCUMENT +</synopsis> + + <para> + The expression <literal>IS NOT DOCUMENT</literal> returns false if the + argument XML value is a proper XML document, true if it is not (that is, + it is a content fragment), or null if the argument is null. + </para> + </sect3> + <sect3 id="xml-exists"> <title><literal>XMLEXISTS</literal></title> |