jimfog Posted September 7, 2021 Share Posted September 7, 2021 take a look at this query...it has a series of AND clasues..pay attention to the 3rd commented..it sums up what I want to do. SELECT lastname,city FROM users INNER JOIN business_users ON business_users.user_ID=users.user_ID WHERE users.active=1 AND business_users.sched_entered =1 AND business_users.services_entered=1 --and business.users.staff_entered=1 only if business.users.sraff_enfaged_in_appt=1 AND lastname LIKE 'p%'; I want to ask as prerequisite business.users.staff_entered ONLY if business.users.sraff_enfaged_in_appt column is true. How I would go about achieving that? Link to comment Share on other sites More sharing options...
Ingolme Posted September 7, 2021 Share Posted September 7, 2021 You just need to break that down into its logical components. If you only want to test that field X is 1 when field Y is 1, it's like always returning true when field Y is 0 and only sometimes returning true when field Y is 1. The result would look like this: AND ( Y = 0 /* Value of field X does not matter when Y is 0 */ OR Y = 1 AND X = 1 /* Value of field X matters when Y is 1 */ ) Link to comment Share on other sites More sharing options...
jimfog Posted September 12, 2021 Author Share Posted September 12, 2021 that did,,,not used to in applying the rules of logic in sql...probably you might say that they no differ from other languages and you would be right....anyway..tnanks. Link to comment Share on other sites More sharing options...
Recommended Posts
Create an account or sign in to comment
You need to be a member in order to leave a comment
Create an account
Sign up for a new account in our community. It's easy!
Register a new accountSign in
Already have an account? Sign in here.
Sign In Now