check if value exists

Posted on 16th Feb 2014 07:03 pm by admin

I have googled this for a while and I am getting lots of different results. Is there a standard method used for checking to see if a value exists in a database before inserting a value? I have a form, you type your name and push submit, it inserts the name into the database and then the name shows up in a list. Right now, it accepts the same values. I want to add a check to say

if name exists, do something

Your Answer:

Login to answer

Other forums

Table control is disappearing from Screen
Hi Experts,

I have a screen with multiple table control(TC). Each table control has two c

ORA-01655: unable to extend cluster SYS.C_FILE#_BLOCK# by 128
Hi all,

Oracle 10g. Linux.

I'm facing the below error while trying to import a dumpfil

php multiple action on submit
I have a form which says:

<form enctype='multipart/form-data' method='post' action='pr

Querying info from one table based on info in another
Hi, I am currently trying to make a part for my user driven website where one user can subscribe to

ALV List Display to point to another report on Double Click
Hi,

I want my ALV List Display to point to another report on Double Click on its line ite

Casting Decimals in Oracle
This code worked as a query in DB2, but I am not sure what the syntax is for casting decimals in Ora

Problem executing bash script using shell_exec
Hi there,
I created a bash script file using following code to convert doc documents to pdf using

Calander layout
Hi i know this sounds like a simple question but i cant find the answer to it anywhere i have added

Nested (echoed) php running wrong script
Got a problem with a php website I'm creating.

In a nutshell, the first page is entirely html

Modal Popup Help
Hi guys, I have a modal popup with an iframe. How can i send data from a label or textbox to the ifr