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Snowflake Udf. –Create a UDF to Find Holiday Counts CREATE OR REPLACE FUNCTION UDF_HOLIDAYSDATESTART Date DATEEND Date RETURNS INTEGER AS SELECT COUNT. The function definition can be a SQL expression that returns either a scalar ie. 12302019 In Snowflake case that would mean that a JavaScript UDF can call the functions that are available in the JavaScript v8 engine 2 which is the one Snowflake uses. A SQL UDF evaluates an arbitrary SQL expression and returns the results of the expression.
Developers often overload functions to let users send only relevant parameters. We start with a SQL example. The function definition can be a SQL expression that returns either a scalar ie. Upgrade to the JavaScript Engine. You can call it using one of two overloads. Snowflake supports both SQL and JavaScript UDTFs.
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By the way I was wrong about JavaScript UDTF - as you need dynamic SQL you should use Snowflake PROCEDURE. So in order for a UDF to be beat native SQL the processing advantage must be. 1192020 An UDF evaluates an arbitrary SQL expression and returns the results of the expression. It is then coupled with an API integration in Snowflake to expose it as an External UDF. 1232019 The problem is that there is overhead in serializing results back and forth from the snowflake engine and the javascript udf engine. No its not a basic thing but I cant say its a good approach.