What is the purpose of the 'try_multiply' function in Databricks SQL and how does it handle overflow situations?
The 'try_multiply' function in Databricks SQL is used to multiply two numeric or INTERVAL expressions. If the multiplication results in an overflow, the function will return NULL instead of throwing an error. This helps prevent queries from failing due to overflow situations. The return type of the function depends on the input types: if both inputs are DECIMAL, the result is DECIMAL; if either input is an INTERVAL, the result is the same type as the INTERVAL; if both inputs are integral numeric types, the result is the larger of the two types; in all other cases, the result is a DOUBLE. If either the multiplier or the multiplicand is 0, the operator returns 0.