COALESCE function in MySQL
The COALESCE function in MySQL is used to get the first non-null value from a list of expressions.
If all the values in the list are evaluated to NULL, then the COALESCE() function returns NULL. The COALESCE() function accepts one parameter, which is the list, which can contain various values.
MySQL COALESCE() Function
The MySQL COALESCE() function returns the first non-null value in a list of expressions.
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