HiI want to create a index to improve a query like that: SELECT * FROM MYTABLE WHERE EXTRACT(YEAR FROM datein)=2019 AND EXTRACT(MONTH FROM datein)=1
I can create this index: CREATE DESCENDING MYINDEX ON MYTABLE COMPUTED BY (EXTRACT(YEAR FROM datein) || EXTRACT(MONTH FROM datein) ) and change the query: SELECT * FROM MYTABLE WHERE EXTRACT(YEAR FROM datein)|| EXTRACT(MONTH FROM datein)='20191' index is used,but don't think this is the solution thanks for any help
