LIKE ESCAPE doc fix (was Re: [DOCS] functions-matching correct?)
От | Joe Conway |
---|---|
Тема | LIKE ESCAPE doc fix (was Re: [DOCS] functions-matching correct?) |
Дата | |
Msg-id | 3D632F66.60905@joeconway.com обсуждение исходный текст |
Ответы |
Re: LIKE ESCAPE doc fix (was Re: [DOCS] functions-matching
Re: LIKE ESCAPE doc fix (was Re: [DOCS] functions-matching |
Список | pgsql-patches |
Tom Lane wrote: > Joe Conway <mail@joeconway.com> writes: > >>7.2.1 docs: >>http://www.postgresql.org/idocs/index.php?functions-matching.html#FUNCTIONS-LIKE > > >>" It's also possible to select no escape character by writing ESCAPE ''. >>In this case there is no way to turn off the special meaning of >>underscore and percent signs in the pattern." > > >>7.3 development docs: >>http://developer.postgresql.org/docs/postgres/functions-matching.html#FUNCTIONS-LIKE > > >>" It's also possible to select no escape character by writing ESCAPE ''. >>This effectively disables the escape mechanism and turns off the special >>meaning of underscore and percent signs in the pattern." > > >>I think the former is still correct, isn't it? > > > Yes, as is easily proven by experiment: > > regression=# select 'foo' LIKE 'f%'; > ?column? > ---------- > t > (1 row) > > regression=# select 'foo' LIKE 'f%' escape ''; > ?column? > ---------- > t > (1 row) > > Who put that change in? Here's a small doc patch to fix this issue. Please apply. Thanks, Joe Index: doc/src/sgml/func.sgml =================================================================== RCS file: /opt/src/cvs/pgsql-server/doc/src/sgml/func.sgml,v retrieving revision 1.114 diff -c -r1.114 func.sgml *** doc/src/sgml/func.sgml 21 Aug 2002 05:25:49 -0000 1.114 --- doc/src/sgml/func.sgml 21 Aug 2002 05:42:49 -0000 *************** *** 2238,2246 **** <para> It's also possible to select no escape character by writing <literal>ESCAPE ''</literal>. This effectively disables the ! escape mechanism and ! turns off the special meaning of underscore and percent signs in ! the pattern. </para> <para> --- 2238,2245 ---- <para> It's also possible to select no escape character by writing <literal>ESCAPE ''</literal>. This effectively disables the ! escape mechanism, which makes it impossible to turn off the ! special meaning of underscore and percent signs in the pattern. </para> <para>
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