why this query can delete duplicates ?


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

why this query can delete duplicates ? Anybody can give me the detailed explanation ?

Thanks

select salary from employees union select salary from employees;

No comments posted yet

Your Answer:

Login to answer
203 Like 28 Dislike
Previous forums Next forums
Other forums

help countdown timers
hello every one,

I'd like to know how to insert many countdowns in the same page.
The dura

first id from db not showing
I have a php script which displays the content of a mysql table as a html table with sorting, delete

Had a simple form script that suddenly stopped working
It was made about a year ago and had been working fine. Last time it was known to work for sure was

date function help
i need help with date function

Code: [Select]<!DOCTYPE HTML PUBLIC "-//W3C//DTD H

Random Number Generation And Probability
Hello, I am working on a function which has to insert data into a SQL table.

we have to suppl

need help with date function
i have following form for date

Code: <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01

COde for a Cc
I'm not receiving $ft as a Cc. Why is that??

$to = "$email";
$headers = "Fr

PHP Session Issue
I'm having an issue with one section on my website dealing with sessions. Now I know that myself and

Require select-option functionality in Module Pool Programming
Hi Gurus,

I am doing a development by Module Pool on Warehouse Management. For that devel

displaying email without attracting a ton of spam
Hello,

this is maybe the wrong place to ask.
How would you display an email address on a w

Sign up to write
Sign up now if you have flare of writing..
Login   |   Register
Follow Us
Indyaspeak @ Facebook Indyaspeak @ Twitter Indyaspeak @ Pinterest RSS



Play Free Quiz and Win Cash