خطأ: عندى الترقية من 3.7.3 إلى 3.8.4

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Database error in vBulletin 3.7.3:
Invalid SQL:
ALTER TABLE user ADD birthday_search DATE NOT NULL DEFAULT '0000-00-00';
MySQL Error : Duplicate column name 'birthday_search'
Error Number : 1060
Request Date : Sunday, November 19th 2006 @ 06:12:37 AM
Error Date : Sunday, November 19th 2006 @ 06:12:37 AM
Script : http://127.0.0.1/vb2/install/upgrade_300.php?step=1
Referrer : http://127.0.0.1/vb2/install/upgrade_300.php
IP Address : 127.0.0.1
Username :
Classname : vB_Database
MySQL Version : 5.0.45-community-nt-log


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و لم تكتمل الترقيه

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