sqlserver 中通配符%和_的使用

--以a开头的数据
SELECT * FROM BCUSTOMER_MZN WHERE CST_NAME LIKE 'A%'
--以Z结尾的数据
SELECT * FROM BCUSTOMER_MZN WHERE CST_NAME LIKE '%Z'
--含有B的数据
SELECT * FROM BCUSTOMER_MZN WHERE CST_NAME LIKE '%B%'
--不含有B的数据
SELECT * FROM BCUSTOMER_MZN WHERE CST_NAME not LIKE '%B%'

--三位且中间字母是a的
SELECT * FROM BCUSTOMER_MZN WHERE CST_NAME LIKE '_a_'
--两位且结尾字母是a的
SELECT * FROM BCUSTOMER_MZN WHERE CST_NAME LIKE '_a'
--两位且开头字母是a的
SELECT * FROM BCUSTOMER_MZN WHERE CST_NAME LIKE 'a_'