在此上下文中不允许使用子查询 -- SQL statement from 2008 to 2005

Question

我有一个 SQL 语句，它在 window 表单应用程序中运行。我正在使用 SQL server 2008 进行开发和测试。这里一切都好

            SqlCommand command1 = new SqlCommand("insert into payment_detail ( " +
                                                "transaction_id, enrolment_id, hkid_1, section_r, " +
                                                "classes, section_fee, assist_amt, additional_assist_amt, " +
                                                "discount_amt, coupon_amt, coupon_amt_no_number, " +
                                                "paid_amt, last_updated_by, last_updated_date) values " +
                                                "(@transaction_id, @enrolment_id, @hkid_1, @section_r, " +
                                                "@classes, @section_fee, (select section_fee - adjusted_section_fee from coursenew where coursecode = @courseCode and section_r = @section_r), @additional_assist_amt, " +
                                                "@discount_amt, @coupon_amt, @coupon_amt_no_number, " +
                                                "@paid_amt, @last_updated_by, GETDATE())"
                                                , myConnection);

但是当移动到另一个使用 SQL 服务器 2005 的工作站时。它会提示如下错误

在此上下文中不允许使用子查询。只允许标量表达式。

很抱歉，由于一台电脑只能安装一个版本的SQL服务器。我无法使用 SQL 服务器 2005 测试脚本。

请帮忙，谢谢。

完整的sql声明将在下面列出

 insert into payment_detail ( transaction_id, enrolment_id, hkid_1, section_r, classes, section_fee, assist_amt, additional_assist_amt, discount_amt, coupon_amt, coupon_amt_no_number, paid_amt, last_updated_by, last_updated_date) values (@transaction_id, @enrolment_id, @hkid_1, @section_r, @classes, @section_fee, (select section_fee - adjusted_section_fee from coursenew where coursecode = @courseCode and section_r = @section_r), @additional_assist_amt, @discount_amt, @coupon_amt, @coupon_amt_no_number, @paid_amt, @last_updated_by, GETDATE())"

Answer 1

解决此问题的最简单方法是在插入运行之前将 select 语句放入局部变量中，然后使用临时 table 代替子查询.

https://msdn.microsoft.com/en-us/library/ms188927.aspx

编辑：select进入局部变量的具体示例。 https://msdn.microsoft.com/en-us/library/ms187330.aspx

Answer 2

您可以将其转换为使用子查询从 select 而不是 uf 插入的查询：

insert into payment_detail (
  transaction_id, enrolment_id, hkid_1, section_r, classes, section_fee,
  assist_amt,
  additional_assist_amt, discount_amt, coupon_amt, coupon_amt_no_number,
  paid_amt, last_updated_by, last_updated_date
)
select
  @transaction_id, @enrolment_id, @hkid_1, @section_r, @classes, @section_fee,
  section_fee - adjusted_section_fee,
  @additional_assist_amt, @discount_amt, @coupon_amt, @coupon_amt_no_number,
  @paid_amt, @last_updated_by, GETDATE()
from
  coursenew
where
  coursecode = @courseCode and section_r = @section_r

Answer 3

那是因为您的子查询 return 多于一个标量值。
与SQLServer版本无关，属于逻辑问题
写成下面的样子：

select TOP 1 section_fee - adjusted_section_fee from coursenew where coursecode = @courseCode and section_r = @section_r

在此上下文中不允许使用子查询 -- SQL statement from 2008 to 2005

Subqueries are not allowed in this context -- SQL statement from 2008 to 2005

sql

sql-server

sql-server-2008

sql-server-2005