SQL Oracle 在空格前获取子字符串
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时间:2020-09-01 13:23:42 来源:igfitidea点击:
Oracle get substring before a space
提问by Vivek
I have a string with space in between, and I need to get the first string (it can be a number) before the space.
我有一个中间有空格的字符串,我需要在空格之前获取第一个字符串(它可以是一个数字)。
WITH test_data AS (
SELECT '123642134 10' AS quarter_cd FROM dual UNION ALL --VALID
)
select *
from test_data
where regexp_like(quarter_cd, '', 'c')
The output should be:
输出应该是:
123642134
回答by DazzaL
Substr (quarter_cd, 1,instr(quarter_cd,' ') - 1)
Should do that.
应该这样做。
回答by Bruno
SELECT Rtrim(Substr('123642134 10',1,Instr('123642134 10',' '))) AS quarter_cd FROM dual;
Uses of string function used in upper query
上查询中字符串函数的使用
- Instr()- to get position of any character or space from the given string.
- Substr()- to get substring from given string.
- Rtrim()- to remove spaces from right side.
- Instr()- 从给定的字符串中获取任何字符或空格的位置。
- Substr()- 从给定的字符串中获取子字符串。
- Rtrim()- 从右侧删除空格。