SQL循环在表中增加新列

--循环在表中增加列
SET NOCOUNT ON

DECLARE  @barcode_head varchar(10)
declare @sql varchar(500)

--声明游标
DECLARE business_cursor CURSOR FOR
SELECT barcode_head FROM s_business order by id

OPEN business_cursor
FETCH NEXT FROM business_cursor INTO @barcode_head

WHILE @@FETCH_STATUS = 0
BEGIN
   PRINT @barcode_head
   set @sql='alter table db_'+@barcode_head+'_user add Trans_startTime datetime'
   exec(@sql)
   print @sql
   FETCH NEXT FROM business_cursor INTO @barcode_head
  
end
close business_cursor

DEALLOCATE business_cursor
GO