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

    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>