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Deprecate the use of => as an operator name.

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In HEAD, emit a warning when an operator named => is defined.
In both HEAD and the backbranches (except in 8.2, where contrib
modules do not have documentation), document that hstore's text =>
text operator may be removed in a future release, and encourage the
use of the hstore(text, text) function instead.  This function only
exists in HEAD (previously, it was called tconvert), so backpatch
it back to 8.2, when hstore was added.  Per discussion.
This commit is contained in:
Robert Haas
2010-06-22 11:36:28 +00:00
parent 855d440a2f
commit 263ac11379
3 changed files with 26 additions and 3 deletions
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18
doc/src/sgml/hstore.sgml
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@ -1,4 +1,4 @@
<!-- $PostgreSQL: pgsql/doc/src/sgml/hstore.sgml,v 1.3 2009/03/15 22:05:17 tgl Exp $ -->
<!-- $PostgreSQL: pgsql/doc/src/sgml/hstore.sgml,v 1.3.2.1 2010/06/22 11:36:28 rhaas Exp $ -->
<sect1 id="hstore">
<title>hstore</title>
@ -134,6 +134,14 @@
datatypes!)
</para>
<note>
<para>
The <literal>=&gt;</> operator is deprecated and may be removed in a
future release. Use the <literal>hstore(text, text)</literal> function
instead.
</para>
</note>
<table id="hstore-func-table">
<title><type>hstore</> Functions</title>
@ -149,6 +157,14 @@
</thead>
<tbody>
<row>
<entry><function>hstore(text, text)</function></entry>
<entry><type>hstore</type></entry>
<entry>make single-item <type>hstore</></entry>
<entry><literal>hstore('a', 'b')</literal></entry>
<entry><literal>"a"=&gt;"b"</literal></entry>
</row>
<row>
<entry><function>akeys(hstore)</function></entry>
<entry><type>text[]</type></entry>