Hi, I have two tables (drug_master, cds_drugstore) with cds_master.drug_id reference to drug_master.id. I want to fetch all the drugids, drug_name, sum of avaialble drugs (if avaialable, or else null). I have this native MySql query, which is working fine. but I am unable to port this in to HQL. select dm.id, dm.drug_name, sum(cds.qty_available) from drug_master dm left join cds_drugstore cds on dm.id = cds.drug_id and cds.cds_id = 1 and cds.source_id = 'sourceName' and cds.source_type = 'c' group by dm.id I've didn't see any examples using 'ON' keyword. Because here I've to join tables based on 3 tables. Some one please help. I need this very urgently. Thanks in advance. Regards, ManiKanta ********** DISCLAIMER ********** Information contained and transmitted by this E-MAIL is proprietary to Sify Limited and is intended for use only by the individual or entity to which it is addressed, and may contain information that is privileged, confidential or exempt from disclosure under applicable law. If this is a forwarded message, the content of this E-MAIL may not have been sent with the authority of the Company. If you are not the intended recipient, an agent of the intended recipient or a person responsible for delivering the information to the named recipient, you are notified that any use, distribution, transmission, printing, copying or dissemination of this information in any way or in any manner is strictly prohibited. If you have received this communication in error, please delete this mail & notify us immediately at admin(a)sifycorp.com