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Merge remote-tracking branch 'remotes/Sajaki/ticket/10854' into develop

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# By Sajaki
# Via Sajaki
* remotes/Sajaki/ticket/10854:
  [ticket/10854] sql server drop default constraint when dropping column
This commit is contained in:
Nathan Guse 2013-01-15 22:22:06 -06:00
commit 28e0520fe4
1 changed files with 16 additions and 0 deletions
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16
phpBB/includes/db/db_tools.php
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@ -1817,6 +1817,22 @@ class phpbb_db_tools
case 'mssql':
case 'mssqlnative':
// remove default cosntraints first
// http://msdn.microsoft.com/en-us/library/aa175912%28v=sql.80%29.aspx
$statements[] = "DECLARE @drop_default_name VARCHAR(100), @cmd VARCHAR(1000)
SET @drop_default_name =
(SELECT so.name FROM sysobjects so
JOIN sysconstraints sc ON so.id = sc.constid
WHERE object_name(so.parent_obj) = '{$table_name}'
AND so.xtype = 'D'
AND sc.colid = (SELECT colid FROM syscolumns
WHERE id = object_id('{$table_name}')
AND name = '{$column_name}'))
IF @drop_default_name <> ''
BEGIN
SET @cmd = 'ALTER TABLE [{$table_name}] DROP CONSTRAINT [' + @drop_default_name + ']'
EXEC(@cmd)
END";
$statements[] = 'ALTER TABLE [' . $table_name . '] DROP COLUMN [' . $column_name . ']';
break;