我有一个包含类似数据的表
---------------
|town |
---------------
|Longton North |
|Longton South |
|Longton North |
|Longton East |
|Longton West |
|East Valley |
|West Valley |
---------------
我知道如何使用
修剪字符串中的尾部和前导字符TRIM(BOTH 'North' FROM town)
但是我想从结果中削减北,南,西,东。所以输出应该像
---------
|town |
---------
|Longton |
|Longton |
|Longton |
|Longton |
|Longton |
|Valley |
|Valley |
---------
答案 0 :(得分:2)
试试这个...这对你有用..
select
trim(TRIM(BOTH 'South' FROM TRIM(BOTH 'North' FROM TRIM(BOTH 'East' FROM TRIM(BOTH 'West' FROM town))))) from tbl
或更多指定的
select trim(case
when position('North' in town) > 0 then TRIM(BOTH 'North' FROM town)
when position('South' in town) > 0 then TRIM(BOTH 'South' FROM town)
when position('East' in town) > 0 then TRIM(BOTH 'East' FROM town)
when position('West' in town) > 0 then TRIM(BOTH 'West' FROM town) end)
from tbl