更新表t-sql中的多个值

Question

I have multiple columns where one of them has varchar values as follow.

1
2
4
02
05
6
03
06
123
32
87

I want to find any record that has values starting with 0 > remove that 0 (so 02 > 2) and update that field so there is no value starting with 0.

How can I go about doing that instead of manually updating each record that has 0 in the front? Is that even possible?

Thank you

Answer 1

The following code removes the leading zeros by casting the value to an integer and back to a character string:

update t
    set col = cast(cast(col as int) as varchar(255))
    where t.col like '0%'

Answer 2

You can use the following:

update yourtable
set col = substring(col, 2, len(col)-1)
where left(col, 1) = '0'

See SQL Fiddle with Demo

Answer 3

Run this query until everything is filtered out I guess...

UPDATE Table SET Column=RIGHT(Column, LEN(Column)-1) WHERE Column LIKE '0%';

[Edit] Gordon's approach is probably better.