My name is Assaf Lasry and I'm a junior programmer and I have a problem building a query. I'm using SQL Server and I have 2 tables (TB1, TB2). in both tables, I have a field called IDNum. I want to build a query that selects all ID's in TB1 that are NOT found in TB2. Example: If in both tables I have the following records:
TB1: IDNum TB2: IDNum
we can see that 2 and 3 are not in TB2. These are the values that I want to retrieve. I was wondering if you could help me and tell me what should my query look like. Please, I would appreciate your help.
Thank you in advance,