How do you strip leading spaces in Oracle?

Question

I need to strip leading spaces from a column in Oracle. I've Googled but haven't found any answers except to write my own function which I'd like to avoid.

What's the easiest way to accomplish this?

Answer 1

You can user LTRIM Oracle function:

SQL> select ltrim(' hello world') from dual;

LTRIM('HELLOWORLD')
-------------------
hello world

For ending spaces you can use RTRIM . And for more options check out TRIM .

Answer 2

使用trim函数从字符串的开头或结尾删除所有指定的字符。

trim( [ leading | trailing | both  [ trim_character ]  ]   string1 )

Answer 3

UPDATE表SET字段= TRIM（字段）;

Answer 4

更新TABLE_NAME设置FIELD_NAME = TRIM（COLUMN_NAME）