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  #1  
Old 09-01-2007, 04:57 PM
foxfirediego foxfirediego is offline
 
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Default not working: ALTER TABLE x ADD x IF NOT EXISTS

i'm trying to use a "IF NOT EXISTS" with a install code but i couldn't
could someone correct this for me?
thx

$db->query_write("ALTER TABLE accounts ADD group_id IF NOT EXISTS INT(11) NOT NULL COMMENT 'accounts group' AFTER password");

the error
Code:
Database error in vBulletin 3.6.8:

Invalid SQL:
ALTER TABLE accounts ADD group_id IF NOT EXISTS INT(11) NOT NULL COMMENT 'accounts group' AFTER password;

MySQL Error  : You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'IF NOT EXISTS INT(11) NOT NULL COMMENT 'accounts group' AFTER password' at line 1
Error Number : 1064
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  #2  
Old 09-02-2007, 07:26 AM
Dismounted's Avatar
Dismounted Dismounted is offline
 
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Default

You can't directly use the IF NOT EXISTS method on column additions.
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  #3  
Old 09-02-2007, 08:05 AM
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Adrian Schneider Adrian Schneider is offline
 
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Use the db alter class, disable database errors before doing the query, or do another query to see if the column exists.
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  #4  
Old 09-02-2007, 05:07 PM
foxfirediego foxfirediego is offline
 
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Default

thanks Dismounted and SirAdrian i'll give a try!
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