Searching for a string in an all tables, rows and columns of a database

DECLARE
    @search_string  VARCHAR(100),
    @TABLE_NAME     SYSNAME,
    @table_id       INT,
    @column_name    SYSNAME,
    @sql_string     VARCHAR(2000)
 
SET @search_string = 'FOOBAR'
 
DECLARE tables_cur CURSOR FOR SELECT name, object_id FROM sys.objects WHERE TYPE = 'U'
OPEN tables_cur
FETCH NEXT FROM tables_cur INTO @TABLE_NAME, @table_id
 
WHILE (@@FETCH_STATUS = 0)
BEGIN
    DECLARE columns_cur CURSOR FOR SELECT name FROM sys.columns WHERE object_id = @table_id AND system_type_id IN (167, 175, 231, 239)
    OPEN columns_cur
 
    FETCH NEXT FROM columns_cur INTO @column_name
    WHILE (@@FETCH_STATUS = 0)
    BEGIN
        SET @sql_string = 'IF EXISTS (SELECT * FROM ' + @TABLE_NAME + ' WHERE [' + @column_name + '] LIKE ''%' + @search_string + '%'') PRINT ''' + @TABLE_NAME + ', ' + @column_name + ''''
 
        EXECUTE(@sql_string)
 
        FETCH NEXT FROM columns_cur INTO @column_name
    END
 
    CLOSE columns_cur
    DEALLOCATE columns_cur
 
    FETCH NEXT FROM tables_cur INTO @TABLE_NAME, @table_id
END
 
CLOSE tables_cur
DEALLOCATE tables_cur