MySQL：每行添加尾随零

Question

I have a DB setup with two columns, ID and VAL .

ID is an incrementing integer, starting from 1 and increasing by 1 for each row. VAL is a simple string.

How can I update each row's ID to be 10 times greater? Eg: ID 1, 2, 3 -> ID 10, 20, 30

Or is there a better method to adding a trailing zero to the end of every row in a column?

Answer 1

If you are trying to update the existing values, you simply need to do:

update mysterytablename set ID=ID*10 order by ID desc;

(The order by is only needed if ID is a primary or unique key, which presumably it is.)