четверг, 14 января 2010 г.

Change database collation (by force)

Злостно снасильничать над БД и поменять Collation можно следующей последовательностью команд:

ALTER DATABASE [DatabaseName] SET SINGLE_USER WITH ROLLBACK IMMEDIATE
ALTER DATABASE [DatabaseName] COLLATE [new collation name]
ALTER DATABASE [DatabaseName] SET MULTI_USER


Изменить COLLATION всех колонок:


declare @toCollation sysname

SET @toCollation = 'SQL_Latin1_General_CP1_CI_AS' -- Database default collate

SELECT 'ALTER TABLE ' + INFORMATION_SCHEMA.COLUMNS.TABLE_NAME +
' ALTER COLUMN ' + COLUMN_NAME + ' ' + DATA_TYPE +
CASE WHEN CHARACTER_MAXIMUM_LENGTH = -1 then '(max)'
WHEN DATA_TYPE in ('text','ntext') then ''
WHEN CHARACTER_MAXIMUM_LENGTH IS NOT NULL
THEN '('+(CONVERT(VARCHAR,CHARACTER_MAXIMUM_LENGTH)+')' )
ELSE isnull(CONVERT(VARCHAR,CHARACTER_MAXIMUM_LENGTH),' ') END
+' COLLATE ' + @toCollation+ ' ' + CASE IS_NULLABLE
WHEN 'YES' THEN 'NULL'
WHEN 'No' THEN 'NOT NULL'

END
FROM INFORMATION_SCHEMA.COLUMNS INNER JOIN INFORMATION_SCHEMA.TABLES
ON INFORMATION_SCHEMA.COLUMNS.TABLE_NAME = INFORMATION_SCHEMA.TABLES.TABLE_NAME
AND INFORMATION_SCHEMA.COLUMNS.TABLE_SCHEMA = INFORMATION_SCHEMA.TABLES.TABLE_SCHEMA
WHERE DATA_TYPE IN ('varchar' ,'char','nvarchar','nchar','text','ntext')
AND TABLE_TYPE = 'BASE TABLE'
and COLLATION_NAME <> @toCollation


Источник: http://sqlblogcasts.com/blogs/ssqanet/archive/2008/03/12/tsql-to-change-collation-of-database-whats-new-in-sql-2008-then.aspx