Question

我正在尝试执行OLE DB命令，仅当主键字段不存在于同一个表中时才向我的表中添加行。这就是我到目前为止所做的：

insert into employee
   (employee_id, first_name, middle_initial, last_name)   /*fields of the employee table*/
   values (employeedID, firstName, mInitial, lastName)    /*columns from my input       */

 /* only insert into the table where employee_ID is not already in the table */
 where ((select employee_id from employee where employee_id = employeeID) = NULL);

基本上我只想要一个条件插入语句。

谢谢！

Answer 1

我不确定您的软件包是如何设置的，但您可能会考虑使用没有任何限制的临时表。首先将所有记录插入到那里，然后在结尾处做出如下声明：

insert into employee (employee_id, first_name, middle_initial, last_name) 
select t.employee_id, t.first_name, t.middle_initial, t.last_name
from temp_employee AS t
left join employee ON t.employee_id = employee.employee_id
where employee.employee_id is null

Sql Server SSIS条件插入

1 个答案: