Check if data exists in database using expression rule

I am trying to create an Expression rule that returns true if a specific piece of data is present in a specific column of a db but I feel like I am not doing it in an efficient way. 

My situation is analogous to this situation:

Database table with employee contact information. Trying to see if 111-222-3333 is present in the phone number column of the table.

I am attaching an image of how I am attempting it and I feel like I am making it more complicated then it should be.

 

Thanks

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