RE: [PHP-DB] Monetary field in MySQL

From: Date: Fri, 23 May 2003 16:15:51 +0000
Subject: RE: [PHP-DB] Monetary field in MySQL
References: 1  Groups: php.db 
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> >how can I have a field in MySQL that represents a monetary value i.e. it > >always has 2 zeros after the decimal point? > > you can use a float type. > > ALTER TABLE blah ADD TA- ùlD > i[ ñQ>âaMoneyField FLOAT(6,2) DEFAULT "0.00" You should use a DECIMAL column as you won't run into floating point error problems. Even though you say FLOAT(6,2), that's just precision. $12.25 may be stored in the database as 12.250000001 and meet the precision you gave. However, now if you're looking for a price == $12.25, this row will not be returned. DECIMAL columns are actually stored as strings, so there is no floating point errors. $12.25 is stored as "12.25" and there are no problems. Oh, and the obvious, this is not a PHP question!! ---John W. Holmes... PHP Architect - A monthly magazine for PHP Professionals. Get your copy today. http://www.phparch.com/

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