COALESCE definition and meaning

Does use of COALESCE slows down the query performance coalesce معنى Where does the verb coalesce come from? The earliest known use of the verb coalesce is in the mid 1500s OED's earliest evidence for coalesce is from around coalesce bigquery What is the Meaning of Coalesce Coalesce Meaning with Example Welcome to our YouTube Channel - Know The Meaning About this Video

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