SQL語句 怎么獲取第一個逗號到第二個逗號之間或者第二個逗號到第三個逗號之間的字符串

 

--獲取第一段 abcd

SELECT LEFT('abcd,1234,ABCD,efg',CHARINDEX(',','abcd,1234,ABCD,efg')-1) 

 --獲取最后一段 efg

SELECTREVERSE(LEFT(REVERSE('abcd,1234,ABCD,efg'),CHARINDEX(',',REVERSE('abcd,1234,ABCD,efg'))-1))

--獲取第二段 1234

SELECT left(stuff('abcd,1234,ABCD,efg',1,charindex(',','abcd,1234,ABCD,efg'),''),charindex(',',stuff('abcd,1234,ABCD,efg',1,charindex(',','abcd,1234,ABCD,efg'),''))-1)

--獲取第三段 ABCD

SELECT  REVERSE(LEFT(REVERSE(LEFT(stuff('abcd,1234,ABCD,efg',1,charindex(',','abcd,1234,ABCD,efg'),''),

charindex(',',stuff('abcd,1234,ABCD,efg',1,charindex(',','abcd,1234,ABCD,efg'),''))+

LEN(REVERSE(LEFT(REVERSE('abcd,1234,ABCD,efg'),CHARINDEX(',',REVERSE('abcd,1234,ABCD,efg'))))))),CHARINDEX(',','abcd,1234,ABCD,efg')-1))