Wouldn't replace change all the entries in your table row, same effect as update? I believe the question is how to test which entry in a form has a new value and replace/update only that value in the table. If I have a form...
______________________________ | Employee Record Update | | | |ID No: 1234 | |Name: _____________________| |Address: _____________________| |Status: Married | | | | Submit | ------------------------------ If I have this table... _________________________________ |idno name address status| |---------------------------------| |1234 Peter 45 street Single| |_________________________________| Which means I only want to replace the status and the name and address remains the same. How do you test w/c entries in the form have new values and change only those entries in the table? Peter, this is basically what your asking, right? I actually need to figure this one out myself so I would appreciate any info. thanks... luie >What about REPLACE? > >http://www.mysql.com/doc/R/E/REPLACE.html > >'REPLACE works exactly like INSERT, except that if an old record in the >table has the same value as a new record on a unique index, the old record >is deleted before the new record is inserted' > >> >> Hi, >> >> Can the UPDATE statement have conditional check embedded in it? I >> have a page that displays a record (in a FORM format) that the user can >> change the information on each column. I want to check each column and >> see which has been changed and update the table for entries that were >> changed only. >> >> for each column data { >> if column is changed >> then update; >> else >> do nothing; >> } >> >> Maybe I am making this too complicated than it needs and just go ahead >> and update all of the columns regardless with the new values, regardless >> they are actually different or not. >> >> Thanks in advance, >> -Peter __________________________________ www.edsamail.com --------------------------------------------------------------------- Before posting, please check: http://www.mysql.com/manual.php (the manual) http://lists.mysql.com/ (the list archive) To request this thread, e-mail <[EMAIL PROTECTED]> To unsubscribe, e-mail <[EMAIL PROTECTED]> Trouble unsubscribing? Try: http://lists.mysql.com/php/unsubscribe.php
