That depends.
Just the one 9, or all instances of 9 in 'C'?
This is a basic SQL question, not a MySQL question.
I would suggest finding a book on SQL.
You could try:
update Table_1 set c=20 where a=10 and b=18 and c=9;
This will guarantee that only the first line ( O one just like it ) will
be updated.
soon chee keong wrote:
>
> Table_1
>
> -------------------------
> A B C
> -------------------------
> 10 18 9
> 4 3 1
> --------------------------
>
> how can i change column C's "9" to say "20" without inserting a new record
> and columns A and B remain unchanged?
>
> do i use REPLACE or what?please advice.
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