SQL COALESCE Function -

website coalesce 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 coalesce Usage · coalesce expression simplifies standard SQL expressions by allowing you to express a search condition as a simple comparison instead of using a when

coalesce Using SQL COALESCE for substituting NULL values When working with the data in the database table, you often use the COALESCE function to substitute a default  coalesce take n number of arguments from left to right coalesce selects the first non null argument similarly isnull is  The COALESCE function returns the first non-NULL value from a series of expressions

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