Question

我在我的表中有一个名为course的列，其行为lyk

row1 : course:1|course:2|course:3
row2 : Course:2|course:4|NUll

现在我必须消除过滤器'|'在行中并将不同的值存储在另一个表中..我怎么做... 使用SP

我将输出列除外：

Course:1
Course:2
Course:3
Course:4

提前致谢

Answer 1

试试这个

create table table1(A varchar(50),B varchar(50),C varchar(50));

insert into table1 values('course:1','course:2','course:3');
insert into table1 values('course:2','course:4',null);

SQL查询

Select Distinct value
From table1
unpivot
(
  value
  For Cource in (A, B, C)
) U;

<强> Fiddle Demo

<强>输出：

  +-----------+
  |  VALUE    |
  +-----------+
  | course:1  |
  | course:2  |
  | course:3  |
  | course:4  |
  +-----------+

Answer 2

尝试使用此功能拆分行值，请查看此link

然后，如果你的数据是这样的：

create table table1 (course varchar(1000))
insert into table1 ( course) values ('course:1|course:2|course:3'),('course:2|course:4|NULL')

此查询使用函数来拆分字符串，您可以将此代码放入存储过程

select ROW_NUMBER()over(order by course)as Number,* 
into #temp
from table1

declare @flag int, @count int
select @count=COUNT(''), @flag=1 from table1

create table #result(items varchar(100))
while @flag<=@count
begin
    declare @row varchar(1000)
    select @row=course from #temp where Number=@flag
    insert into #result
    select Items from [dbo].[Split](@row,'|')
    where Items<>'NULL'
    set @flag=@flag+1
end

select distinct * from #result

drop table #result
drop table #temp

输出：

+---------+
|Items    |
+---------+
|course:1 |
|course:2 |
|course:3 |
|course:4 |
+---------+

如何删除过滤器并将唯一值存储在另一个表中

2 个答案: