SQL Error: ORA-00923: FROM keyword not found where expected

ora 923 ORA-00923 occurs when you try to execute a SELECT or REVOKE statement without a FROM keyword in its correct form and place. If you are seeing this error, the keyword FROM is. ORA is a salient tool for improving the postoperative refractive accuracy of trifocal IOL power calculations and may help in determining the need for toric

orangtua slot, SQL Error: ORA-00923: FROM keyword not found where expected. Can anyone tell me where I'm going wrong with this? you don't need the WITHIN GROUP clause. it's ok.