修改sql语句的错误: create function getid(@xh char(10)) returns @output_table table(@XM varchar(10), @XB varchar(10), @KCH int, @MS varchar(10), @XF int) as begin declare @xm varchar(10),@xb varchar(10),@kch int = 0, @ms varchar(10) = '', @xf int = 0 declare @kcmc varchar(10) , @cj int, @xh char(10) declare cur_score cursor for select 课程表1 .课程名称, 成绩表.期末成绩 from 课程表1 JOIN 成绩表 on 成绩表.课程号 = 课程表1 .课程号 where 成绩表.学号 = @xh open cur_score fetch next from cur_score into @kcmc, @cj while @@FETCH_STATUS = 0 begin if @cj >= 60 begin set @xf = @xf +课程表1.学分 end set @ms = @ms + @kcmc + ',' set @kch = @kch + 1 fetch next from cur_score into @kcmc, @cj end close cur_score deallocate cur_score select @xm = 姓名, @xb = 性别 from 学生表 where 学号 = @xh insert into @output_table values(@xm, @xb, @kch, left(@kcmc, len(@ms) - 1), @xf) return end
时间: 2024-01-14 22:04:46 浏览: 132
根据提供的 SQL 语句,我看到一个问题:在函数声明中,返回表的列名应该使用不带@符号的名称,因为这些名称将在查询表达式中使用。以下是修改后的代码:
```
create function getid(@xh char(10))
returns @output_table table(XM varchar(10), XB varchar(10), KCH int, MS varchar(10), XF int)
as
begin
declare @xm varchar(10),@xb varchar(10),@kch int = 0, @ms varchar(10) = '', @xf int = 0
declare @kcmc varchar(10) , @cj int, @xh char(10)
declare cur_score cursor for
select 课程表1.课程名称, 成绩表.期末成绩
from 课程表1
JOIN 成绩表 on 成绩表.课程号 = 课程表1.课程号
where 成绩表.学号 = @xh
open cur_score
fetch next from cur_score into @kcmc, @cj
while @@FETCH_STATUS = 0
begin
if @cj >= 60
begin
set @xf = @xf + 课程表1.学分
end
set @ms = @ms + @kcmc + ','
set @kch = @kch + 1
fetch next from cur_score into @kcmc, @cj
end
close cur_score
deallocate cur_score
select @xm = 姓名, @xb = 性别 from 学生表 where 学号 = @xh
insert into @output_table values(@xm, @xb, @kch, left(@ms, len(@ms) - 1), @xf)
return
end
```
请注意,在返回表声明中,我将 @XM 和 @XF 列名更改为 XM 和 XF,以便它们可以在查询表达式中使用。
阅读全文