postgresql

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Peter Eisentraut 78c887679d Add current substring regular expression syntax SQL:1999 had syntax SUBSTRING(text FROM pattern FOR escapechar) but this was replaced in SQL:2003 by the more clear SUBSTRING(text SIMILAR pattern ESCAPE escapechar) but this was never implemented in PostgreSQL. This patch adds that new syntax as an alternative in the parser, and updates documentation and tests to indicate that this is the preferred alternative now. Reviewed-by: Pavel Stehule <pavel.stehule@gmail.com> Reviewed-by: Vik Fearing <vik@postgresfriends.org> Reviewed-by: Fabien COELHO <coelho@cri.ensmp.fr> Discussion: https://www.postgresql.org/message-id/flat/a15db31c-d0f8-8ce0-9039-578a31758adb%402ndquadrant.com	2020-06-29 11:05:00 +02:00
..
sgml	Add current substring regular expression syntax	2020-06-29 11:05:00 +02:00
Makefile	Remove maintainer-check target, fold into normal build	2013-10-10 20:11:56 -04:00

Peter Eisentraut 78c887679d Add current substring regular expression syntax

SQL:1999 had syntax

    SUBSTRING(text FROM pattern FOR escapechar)

but this was replaced in SQL:2003 by the more clear

    SUBSTRING(text SIMILAR pattern ESCAPE escapechar)

but this was never implemented in PostgreSQL.  This patch adds that
new syntax as an alternative in the parser, and updates documentation
and tests to indicate that this is the preferred alternative now.

Reviewed-by: Pavel Stehule <pavel.stehule@gmail.com>
Reviewed-by: Vik Fearing <vik@postgresfriends.org>
Reviewed-by: Fabien COELHO <coelho@cri.ensmp.fr>
Discussion: https://www.postgresql.org/message-id/flat/a15db31c-d0f8-8ce0-9039-578a31758adb%402ndquadrant.com

2020-06-29 11:05:00 +02:00

sgml

Add current substring regular expression syntax

2020-06-29 11:05:00 +02:00

Makefile

Remove maintainer-check target, fold into normal build

2013-10-10 20:11:56 -04:00