SQL query problem

Posted by Pankaj on Stack Overflow See other posts from Stack Overflow or by Pankaj
Published on 2010-05-25T09:36:39Z Indexed on 2010/05/25 9:41 UTC
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Hello All

I have 2 tables Project and ProjectList like this

Project

ProjectID
Name
ProjectListID - allow null

In ProjectList

ProjectListID
ProjName

Now what i need here, i want only those recoed from ProjectList table which ProjectListID not in Project table. I made a query but it is taking lot of time to execute.

select * FROM projectslist pl where pl.ProjectsListID not in (SELECT p.ProjectsListID FROM project p where (p.ProjectsListID is not null and p.ProjectsListID <>0))

Please help me to create optimize query. I am using My SQL.

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