Solved

MySql Query, Select distinct where... except

Posted on 2010-08-24
6
436 Views
Last Modified: 2013-12-13
I have:

"SELECT DISTINCT firstName,lastName FROM tbl_users WHERE active = 'yes';"

Open in new window


I want to add an exception.... how can I block someone from appearing?
0
Comment
Question by:cstormer
6 Comments
 
LVL 58

Expert Comment

by:cyberkiwi
ID: 33518034
SELECT DISTINCT firstName,lastName
FROM tbl_users
WHERE active = 'yes'
and not (firstname='$firstname' and lastname='$lastname')

or if you know the ID

SELECT DISTINCT firstName,lastName
FROM tbl_users
WHERE active = 'yes' and id <> $id
0
 
LVL 11

Expert Comment

by:Rajesh Dalmia
ID: 33518037
can u explain  more
is it any specific member you want to block or specific type or anything else.
0
 
LVL 1

Assisted Solution

by:bonjourjolie
bonjourjolie earned 166 total points
ID: 33518044
by which field do you want to block ?
by firstName ? or .... ?

for example

"SELECT DISTINCT firstName,lastName FROM tbl_users WHERE active = 'yes' and firstName <> 'Blocked user';"

0
Courses: Start Training Online With Pros, Today

Brush up on the basics or master the advanced techniques required to earn essential industry certifications, with Courses. Enroll in a course and start learning today. Training topics range from Android App Dev to the Xen Virtualization Platform.

 
LVL 2

Accepted Solution

by:
dfendig earned 167 total points
ID: 33518059
You can add additional logic to the end of your SQL Statement. For example:

      

"SELECT DISTINCT firstName,lastName FROM tbl_users WHERE active = 'yes' AND firstname !='firstnametoexclude';"
or
"SELECT DISTINCT firstName,lastName FROM tbl_users WHERE active = 'yes' AND lastname !='lastnametoexclude';"



0
 
LVL 38

Assisted Solution

by:Aaron Tomosky
Aaron Tomosky earned 167 total points
ID: 33518077
And if you want to block a whole group of users:
Where active = 'yes' and firstname not in ('a', 'b')

Or:
firstname not like 'a%'

Or:
firstname not in (select firstname from table where state = 'ca')
0
 
LVL 58

Expert Comment

by:cyberkiwi
ID: 33518218
> I want to add an exception.... how can I block someone from appearing?

Surely you need both first and last name, otherwise you're blocking Joe bloggs, Joe public and Joe white just by using

"SELECT DISTINCT firstName,lastName FROM tbl_users WHERE active = 'yes' and firstName <> 'Joe';"

What's wrong with the first comment?

SELECT DISTINCT firstName,lastName
FROM tbl_users
WHERE active = 'yes'
and not (firstname='$firstname' and lastname='$lastname')

e.g. if your php var is $firstname='Joe' and $lastname='Public', then the query

WHERE active = 'yes' and not (firstname='Joe' and lastname='public')

only removes joe public and leaves all other joes. The name is matched on both first+last name.
If it is possible to have similarly named people (John Brown is common), I suggested using the ID if you have it available.
0

Featured Post

Live: Real-Time Solutions, Start Here

Receive instant 1:1 support from technology experts, using our real-time conversation and whiteboard interface. Your first 5 minutes are always free.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Suggested Solutions

Title # Comments Views Activity
is this a cms? 8 58
Insert values are dynamic 11 41
PHP AJAX Wordpress 9 19
How would I do this...? 2 27
Things That Drive Us Nuts Have you noticed the use of the reCaptcha feature at EE and other web sites?  It wants you to read and retype something that looks like this.Insanity!  It's not EE's fault - that's just the way reCaptcha works.  But it is …
These days socially coordinated efforts have turned into a critical requirement for enterprises.
The viewer will learn how to dynamically set the form action using jQuery.
The viewer will learn how to look for a specific file type in a local or remote server directory using PHP.

813 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question

Need Help in Real-Time?

Connect with top rated Experts

18 Experts available now in Live!

Get 1:1 Help Now