To validate functions in Hive, you can use the DESCRIBE FUNCTION statement. The DESCRIBE FUNCTION statement provides information about a specific function in Hive, including its syntax, parameters, and return type.
You can also use the SHOW FUNCTIONS statement to list all the available functions in Hive.
SHOW FUNCTIONS;
This output shows a list of all available functions in Hive. You can use this list to find the function you’re interested in and then use the DESCRIBE FUNCTION statement to validate its syntax and parameters.