In SQL, quite often, we want to compare several values with each other. For instance, when we're looking for a specific user by their first and last names, we'll write a query like this one: SELECT * FROM customer WHERE first_name = 'SUSAN' AND last_name = 'WILSON'; We're getting: CUSTOMER_ID FIRST_NAME LAST_NAME ------------------------------------ 8 SUSAN … Continue reading Don’t Use the String Concatenation “Trick” in SQL Predicates
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