[SOLVED] MySQL concurrence

[jmberrueta]

Hi everyone. I hava a script that needs to update a value in a database (let's say, for example, add 1 to the value of a field). So, I first need to read the value in that fileld, increase it, and update the field. In the meantime, such script may be called by another user. Is that posible? If so, the read value might change before the field update is done...

How can that be solved? Is there any php/mysql blocking for that?

 

Thanks in advance

[teng84]

yup!

update add one then do something like this

 

update table set field=field+1 where etc....