The Complete Guide to the SQL COALESCE Function

What is the purpose of COALESCE in SQL? COALESCE serves to return the first non-NULL value from a set of expressions It helps manage NULL

The coalesce function returns the first of the parameters that has a valid non-NULL representation Any number of parameters can be used

coalesce The COALESCE function returns the first non-NULL value from a series of expressions

coalesce The coalesce function can be used to assign a target object a user-defined value or the result of an expression when null values are read · A maximum of ten