SQL: Return “true” if list of records exists?

Question

An alternative title might be: Check for existence of multiple rows?

Using a combination of SQL and C# I want a method to return true if all products in a list exist

Answer 1

You can use a SELECT CASE statement like so:

select case when EXISTS (
 select 1 
 from 
 where 
 ) then TRUE else FALSE end


It returns TRUE when your query in the parents exists.
    

             

                                                        
            
            

              
                
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