--创建一个临时表,并添加数据
DECLARE @table1 TABLE(ID INT,VALUE NVARCHAR(50))
INSERT INTO @table1 VALUES(1,'a,b,c,')
INSERT INTO @table1 VALUES(2,'w,')
SELECT * FROM @table1;
--查询结果是这样子的
用WITH AS 进行处理
* 需要注意字符串以逗号结束,如果是“a,b,c”,那么查出的数据就只有两条
* 这里用WITH 是属于公用表表达式,如果这个语句前面还有语句,那么前一条语句需要用分号结尾
WITH testtb2 AS
(
SELECT
A.ID, A.VALUE, CHARINDEX(',', A.VALUE) AS STA, CHARINDEX(',', A.VALUE) - 1 AS LENS
FROM @table1 AS A
UNION ALL
SELECT
ID, VALUE, CHARINDEX(',', VALUE, STA + 1) AS STA, CHARINDEX(',', VALUE, STA + 1) - STA - 1 AS LENS
FROM testtb2 AS testtb2_2
WHERE (STA <> 0)
)
SELECT TOP (100) PERCENT SUBSTRING(VALUE, STA - LENS, LENS) AS OrderRequest, ID
FROM testtb2 AS testtb2_1
WHERE (STA <> 0)
ORDER BY VALUE
--处理结果