Enjoy an ad free experience by logging in. Not a member yet? Register.
Results 1 to 5 of 5
Thread: DISTINCT question
05-17-2014, 07:24 PM #1
Which of these is correct...
$q1 = "SELECT DISTINCT (article)
$q1 = "SELECT DISTINCT article
It doesn't matter...
05-17-2014, 08:26 PM #2
- Join Date
- May 2005
- Southern tip of Silicon Valley
- Thanked 169 Times in 164 Posts
Did you run a test to see if there was any difference between #1 and #2?
Did you receive any errors? If not, then both are "correct".
I have never seen any examples that used the parens and I have never used them, but I just ran a test and got the same results, so the answer is #3;
05-18-2014, 03:11 AM #3
Just wanted to make sure I wasn't writing code that might blow up!!
05-26-2014, 04:52 PM #4
- Join Date
- Mar 2006
- St. Catharines, Ontario Canada
- Thanked 148 Times in 139 Posts
Don't use the brackets because when you select more than one column and are in the habit of using the brackets you may incorrectly think they should be there
doesn't apply distinct on column A but on all three columns at once. and the use of the brackets may lead you to believe the DISTINCT is only applied to columnACode:SELECT DISTINCT (columnA), columnB, columnC FROM sometable
Users who have thanked guelphdad for this post:
05-26-2014, 07:15 PM #5