PREHOOK: query: DESCRIBE FUNCTION index
PREHOOK: type: DESCFUNCTION
POSTHOOK: query: DESCRIBE FUNCTION index
POSTHOOK: type: DESCFUNCTION
index(a, n) - Returns the n-th element of a 
PREHOOK: query: DESCRIBE FUNCTION EXTENDED index
PREHOOK: type: DESCFUNCTION
POSTHOOK: query: DESCRIBE FUNCTION EXTENDED index
POSTHOOK: type: DESCFUNCTION
index(a, n) - Returns the n-th element of a