Updating multiple fields mysql

In the case where the application server and database server are on different hosts, the round-trip will involve network latency as well.

The dominant factor in the time taken to complete the overall operation tends to be the “admin” work in conveying the application’s intention to the database server rather than the actual updates to the database.

For small numbers of rows requiring updates, it can be adequate to use an UPDATE statement for each row that requires an update.

But if there are a large number of rows that require an update, then the overhead of issuing large numbers of UPDATE statements can result in the operation as a whole taking a long time to complete.

I'm using stripslashes and urlencode before I update the columns but it only seems to work if I try to update 1 column at a time ?

ok, I've tried just updating 1 column (title, date, body) and they all work fine that way so why doesn't it work when Itry to update 3 at once ???

Thanks, Jon If your ID is an integer, you shouldn't need quotes around $ID.A more effective solution to this problem is to attempt to reduce the number of UPDATE statements.Let us start with a simple table: UPDATE staff SET salary = 1200 WHERE name = ' Bob'; UPDATE staff SET salary = 1200 WHERE name = ' Jane'; UPDATE staff SET salary = 1200 WHERE name = ' Frank'; UPDATE staff SET salary = 1200 WHERE name = ' Susan'; UPDATE staff SET salary = 1200 WHERE name = ' John'; UPDATE staff SET salary = 1200 WHERE name = ' Bob'; UPDATE staff SET salary = 1250 WHERE name = ' Jane'; UPDATE staff SET salary = 1200 WHERE name = ' Frank'; UPDATE staff SET salary = 1250 WHERE name = ' Susan'; UPDATE staff SET salary = 1200 WHERE name = ' John'; We are no longer setting all the salary fields to the same value, so we can’t collapse it into a single statement.And if somebody happens to put a single quote in the form blanks they've filled out, your query will be hosed up unless you add slashes.You strip slashes when pulling the data back out for display.

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(And your ID should probably be an auto-incremented ingeter unless you've got another primary key set that fills this role.) Note also that you don't need a "SET" for each column.

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