变量可以在 OLE DB 命令中定义吗? [英] Can Variable define in OLE DB Command?

问题描述

我定义了一个变量 Test，它是@[User::Test]，字符串值为 "abc".

I had defined a variable Test which is @[User::Test] with string value "abc".

我的问题是我可以设置更新我的表的 sql 命令，其中我的列值 = 我的变量吗?

My question is can I set the sql command that update my table where my column value = my variable ?

示例.

update tableA set ValueB = '1pm' where ValueA = '" + @[User::Test]  + "'  

但这对我不起作用.如何解决?

But this is not working for me. How to solve it ?

推荐答案

你必须在 SQL 文本中使用问号并使用查询配置绑定变量(IIRC，它是 Parameter Mapping 标签).例如，我曾经做过这样的事情:

You have to use a question mark in the SQL text and bind the variable using the query configuration (IIRC, it was the Parameter Mapping tab). For example, I used to do stuff like this:

-- declare vars
declare @table varchar(256);
declare @sql varchar(max);

-- get the table as a parameter
set @table = ?;

-- drop the table if it already exists
if (object_id(@table) is not null) begin;
    set @sql = 'drop table '+@table+';';
    exec(@sql);
end;

-- create the table
set @sql = '
    create table '+@table+' (
        IPID int,
        ...
        _rn int
    );
';
exec(@sql);

在这里，我在谷歌找到了一个截图:https:///www.simple-talk.com/iwritefor/articlefiles/1455-SsisVariables_Fig11-620x524.jpg

Here, I found a screenshot in Google: https://www.simple-talk.com/iwritefor/articlefiles/1455-SsisVariables_Fig11-620x524.jpg

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