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Add quote_literal(anyelement) to preserve (and, in fact, extend) a

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useful consequence of the former liberal implicit casting to text;
namely that you can feed non-string values to quote_literal() and get
unsurprising results.  Per discussion.
This commit is contained in:
Tom Lane 2007-11-27 18:29:11 +00:00
parent 66d7bbf674
commit 3f89964234
3 changed files with 19 additions and 6 deletions
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17
doc/src/sgml/func.sgml
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@ -1,4 +1,4 @@
<!-- $PostgreSQL: pgsql/doc/src/sgml/func.sgml,v 1.411 2007/11/08 13:13:28 petere Exp $ -->
<!-- $PostgreSQL: pgsql/doc/src/sgml/func.sgml,v 1.412 2007/11/27 18:29:11 tgl Exp $ -->
<chapter id="functions">
<title>Functions and Operators</title>
@ -1514,7 +1514,7 @@
</row>
<row>
<entry><literal><function>quote_ident</function>(<parameter>string</parameter>)</literal></entry>
<entry><literal><function>quote_ident</function>(<parameter>string</parameter> <type>text</type>)</literal></entry>
<entry><type>text</type></entry>
<entry>
Return the given string suitably quoted to be used as an identifier
@ -1528,7 +1528,7 @@
</row>
<row>
<entry><literal><function>quote_literal</function>(<parameter>string</parameter>)</literal></entry>
<entry><literal><function>quote_literal</function>(<parameter>string</parameter> <type>text</type>)</literal></entry>
<entry><type>text</type></entry>
<entry>
Return the given string suitably quoted to be used as a string literal
@ -1539,6 +1539,17 @@
<entry><literal>'O''Reilly'</literal></entry>
</row>
<row>
<entry><literal><function>quote_literal</function>(<parameter>value</parameter> <type>anyelement</type>)</literal></entry>
<entry><type>text</type></entry>
<entry>
Coerce the given value to text and then quote it as a literal.
Embedded single-quotes and backslashes are properly doubled.
</entry>
<entry><literal>quote_literal(42.5)</literal></entry>
<entry><literal>'42.5'</literal></entry>
</row>
<row>
<entry><literal><function>regexp_matches</function>(<parameter>string</parameter> <type>text</type>, <parameter>pattern</parameter> <type>text</type> [, <parameter>flags</parameter> <type>text</type>])</literal></entry>
<entry><type>setof text[]</type></entry>

4
src/include/catalog/catversion.h
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@ -37,7 +37,7 @@
* Portions Copyright (c) 1996-2007, PostgreSQL Global Development Group
* Portions Copyright (c) 1994, Regents of the University of California
*
* $PostgreSQL: pgsql/src/include/catalog/catversion.h,v 1.438 2007/11/27 12:21:05 petere Exp $
* $PostgreSQL: pgsql/src/include/catalog/catversion.h,v 1.439 2007/11/27 18:29:11 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@ -53,6 +53,6 @@
*/
/* yyyymmddN */
#define CATALOG_VERSION_NO 200711271
#define CATALOG_VERSION_NO 200711272
#endif

4
src/include/catalog/pg_proc.h
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@ -7,7 +7,7 @@
* Portions Copyright (c) 1996-2007, PostgreSQL Global Development Group
* Portions Copyright (c) 1994, Regents of the University of California
*
* $PostgreSQL: pgsql/src/include/catalog/pg_proc.h,v 1.479 2007/11/27 12:21:05 petere Exp $
* $PostgreSQL: pgsql/src/include/catalog/pg_proc.h,v 1.480 2007/11/27 18:29:11 tgl Exp $
*
* NOTES
* The script catalog/genbki.sh reads this file and generates .bki
@ -2631,6 +2631,8 @@ DATA(insert OID = 1282 ( quote_ident PGNSP PGUID 12 1 0 f f t f i 1 25 "25"
DESCR("quote an identifier for usage in a querystring");
DATA(insert OID = 1283 ( quote_literal PGNSP PGUID 12 1 0 f f t f i 1 25 "25" _null_ _null_ _null_ quote_literal - _null_ _null_ ));
DESCR("quote a literal for usage in a querystring");
DATA(insert OID = 1285 ( quote_literal PGNSP PGUID 14 1 0 f f t f v 1 25 "2283" _null_ _null_ _null_ "select pg_catalog.quote_literal($1::pg_catalog.text)" - _null_ _null_ ));
DESCR("quote a data value for usage in a querystring");
DATA(insert OID = 1798 ( oidin PGNSP PGUID 12 1 0 f f t f i 1 26 "2275" _null_ _null_ _null_ oidin - _null_ _null_ ));
DESCR("I/O");