问题描述
我想在指向其他表中 pk 的表中插入几百行.我一直在尝试使用 while 循环在表中插入多条记录.我实际上是在设置我的测试数据.
I want to insert couple of hundred rows into a table that points to pk in other table. I have been trying to use while loops for inserting multiple records in the table. I am actually setting up my test data.
这就是我正在做的:
declare @count int; set @count = 4018; while @count <= 5040 begin INSERT INTO [MY_TABLE] ([pk_from_other_table] ,[..] ,[...] ,[..] ,[..] ,[...] ,[...] ,[..]) select (pk_from_other_table, ,[..] ,[...] ,[..] ,[..] ,[...] ,[...] ,[..]) @count = @count + 1; end
但这似乎不起作用!任何人都可以帮忙...我想做的就是插入记录数 = 主表中存在的记录数.
but this does not seems to work ! can anyone help please... all I want to do is insert number of records = number of records that exist in primary table.
?关于如何实现这一目标的任何想法?
? any idea on how can I achieve this ?
我要么在计数附近得到错误的语法
I either get incorrect sytax near count
或
消息 102,级别 15,状态 1,第 17 行',' 附近的语法不正确.
Msg 102, Level 15, State 1, Line 17 Incorrect syntax near ','.
推荐答案
您当前的语法问题是 @count = @count + 1; 需要 set @count =@count + 1.
Your current syntax problem is with the @count = @count + 1; which needs to be set @count = @count + 1.
但是……
不需要循环.你可以直接做一个大的插入,比如:
There is no need for a loop. You can simply do one big insert directly, like:
insert into your_table (fk_col, other_col1, other_col2) select pk_col, 'something', 'something else' from your_other_table
如果需要,可以在上面添加where子句.
If you need to, you can add a where clause to the above.