Differences Between IsNull () and Coalesce () Functions? ISNULL () Function: 1)ISNULL function is regraded as Transact-SQL function. 2)This function is used to replace NULL with the replacement value ...

-- ISNULL() function replaces NULL with a specified value. -- The ISNULL() function returns the replacement if the expression evaluates to NULL. -- Before returning a value, it implicitly converts the ...

I've been in an argument with one of our devs that took an update statement with an inner join and made it a left join (because inner was missing some records somehow in the left table - tableB in ...