Understanding SQL Server COALESCE with Empty Strings

website coalesce MicroStrategy SQL generation engine uses COALESCE in two principal ways: to merge attribute ID columns in full outer joins, and for coalesce Coalesce definition: to grow together or into one body See examples of COALESCE used in a sentence

coalesce Coalesce coalesce looks at the values in a list , and returns the first non-null value This function is useful when you want to: fill in missing  Usage Notes · The minimum number of arguments is 2 · The COALESCE function is equivalent to the CASE expression CASE WHEN expr1 IS NOT NULL THEN  The COALESCE function returns the first non-NULL value from a series of expressions

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