SQL Server’da bazı durumlarda veritabanının Collation’ını değiştirdiğiniz zaman Collation kolonlarda değişmeyebilir ve tüm kolonların Collation’ını değiştirmek isteyebilirsiniz.

Aşağıdaki sorguyu kullanarak sizler de bu işlemi rahatlıkla yapabilirsiniz.

DECLARE @collate NVARCHAR(100);
DECLARE @table NVARCHAR(255);
DECLARE @column_name NVARCHAR(255);
DECLARE @column_id INT;
DECLARE @data_type NVARCHAR(255);
DECLARE @max_length INT;
DECLARE @row_id INT;
DECLARE @sql NVARCHAR(MAX);
DECLARE @sql_column NVARCHAR(MAX);

SET @collate = N'Turkish_CI_AI';

DECLARE local_table_cursor CURSOR FOR
SELECT [name]
FROM sysobjects
WHERE OBJECTPROPERTY(id, N'IsUserTable') = 1;

OPEN local_table_cursor;
FETCH NEXT FROM local_table_cursor
INTO @table;

WHILE @@FETCH_STATUS = 0
BEGIN

    DECLARE local_change_cursor CURSOR FOR
    SELECT ROW_NUMBER() OVER (ORDER BY c.column_id) AS row_id,
           c.name column_name,
           t.Name data_type,
           c.max_length,
           c.column_id
    FROM sys.columns c
        JOIN sys.types t
            ON c.system_type_id = t.system_type_id
        LEFT OUTER JOIN sys.index_columns ic
            ON ic.object_id = c.object_id
               AND ic.column_id = c.column_id
        LEFT OUTER JOIN sys.indexes i
            ON ic.object_id = i.object_id
               AND ic.index_id = i.index_id
    WHERE c.object_id = OBJECT_ID(@table)
    ORDER BY c.column_id;

    OPEN local_change_cursor;
    FETCH NEXT FROM local_change_cursor
    INTO @row_id,
         @column_name,
         @data_type,
         @max_length,
         @column_id;

    WHILE @@FETCH_STATUS = 0
    BEGIN

        IF (@max_length = -1)
            SET @max_length = 4000;

        IF (@data_type LIKE '%char%')
        BEGIN TRY
            SET @sql
                = N'ALTER TABLE ' + @table + N' ALTER COLUMN ' + @column_name + N' ' + @data_type + N'('
                  + CAST(@max_length AS NVARCHAR(100)) + N') COLLATE ' + @collate;
            PRINT @sql;
            EXEC sp_executesql @sql;
        END TRY
        BEGIN CATCH
            PRINT 'ERROR: Some index or contraint rely on the column' + @column_name + '. No conversion possible.';
            PRINT @sql;
        END CATCH;

        FETCH NEXT FROM local_change_cursor
        INTO @row_id,
             @column_name,
             @data_type,
             @max_length,
             @column_id;

    END;

    CLOSE local_change_cursor;
    DEALLOCATE local_change_cursor;

    FETCH NEXT FROM local_table_cursor
    INTO @table;

END;

CLOSE local_table_cursor;
DEALLOCATE local_table_cursor;

GO

Herkese çalışma hayatında ve yaşamında başarılar kolaylıklar.