Beefy Boxes and Bandwidth Generously Provided by pair Networks
There's more than one way to do things
 
PerlMonks  

Re: Checking for Dupes in MySQL

by jeroenes (Priest)
on Nov 29, 2001 at 14:54 UTC ( #128322=note: print w/ replies, xml ) Need Help??


in reply to Checking for Dupes in MySQL

Standard SQL (dunno whether mysql supports it): add a UNIQUE modifier in the CREATE TABLE statement at the e-mail column. Afterwards, your dbase won't allow duplicate e-mail addresses.

Be sure to add decent error-checking to inform your prospective users why their entry was not allowed.

Jeroen
"We are not alone"(FZ)


Comment on Re: Checking for Dupes in MySQL
Re: Re: Checking for Dupes in MySQL
by belg4mit (Prior) on Nov 30, 2001 at 02:24 UTC
    MySQL is SQL92 compliant.

    --
    perl -p -e "s/(?:\w);([st])/'\$1/mg"

Log In?
Username:
Password:

What's my password?
Create A New User
Node Status?
node history
Node Type: note [id://128322]
help
Chatterbox?
and the web crawler heard nothing...

How do I use this? | Other CB clients
Other Users?
Others making s'mores by the fire in the courtyard of the Monastery: (12)
As of 2014-09-18 08:43 GMT
Sections?
Information?
Find Nodes?
Leftovers?
    Voting Booth?

    How do you remember the number of days in each month?











    Results (109 votes), past polls