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Jeffrey Cohen > Genezzo > Genezzo::Havok::SQLCompare

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Module Version: 1.02   Source  

NAME ^

Genezzo::Havok::SQLCompare - SQL comparison functions

SYNOPSIS ^

HavokUse("Genezzo::Havok::SQLCompare")

DESCRIPTION ^

ARGUMENTS ^

FUNCTIONS ^

SQL functions

IN
  WHERE value IN (list)

Returns TRUE if the value is present in the list, else FALSE. NOT IN is slightly different: returns NULL if any list item is NULL, return FALSE if the value matches any list item, else returns TRUE.

LIKE
  WHERE value LIKE (pattern)

  WHERE value LIKE (pattern, escape_char)

Returns TRUE if the value matches the pattern. In the pattern, a '%' (percent sign) matches zero or more characters, and an '_' (underscore) matches exactly one character. These characters can be matched as literals if they are preceded by the optional escape character.

EXPORT

LIMITATIONS ^

IN has list support, but no IN subquery support.

LIKE has a "functional" syntax, instead of the standard 'LIKE pattern [ESCAPE escape_char]'.

AUTHOR ^

Jeffrey I. Cohen, jcohen@genezzo.com

SEE ALSO ^

perl(1).

Copyright (c) 2006 Jeffrey I Cohen. All rights reserved.

    This program is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
    the Free Software Foundation; either version 2 of the License, or
    any later version.

    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU General Public License for more details.

    You should have received a copy of the GNU General Public License
    along with this program; if not, write to the Free Software
    Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA

Address bug reports and comments to: jcohen@genezzo.com

For more information, please visit the Genezzo homepage at http://www.genezzo.com

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