postgresql: update column from another table’s column

UPDATE c_order SET po_refernce_no = (SELECT po_refernce_no FROM “Import” WHERE c_order_id = c_order.c_order_id), tracking_number = (SELECT tracking_number FROM “Import” WHERE c_order_id = c_order.c_order_id)     UPDATE m_product SET manufacturer = (SELECT m_product_po.manufacturer FROM m_product_po WHERE m_product.m_product_id = m_product_po.m_product_id )

pgsql: cannot delete line on table.

This happens when I try to manually delete a record on the Database   ERROR: update or delete on table “m_inoutline” violates foreign key constraint “m_inoutline_canceled_inoutline” on table “m_inoutline” DETAIL: Key (m_inoutline_id)=(8310BD9D63A94DB5A2294EC8E48C6C9F) is still referenced from table “m_inoutline”. ********** Error […]

postgresql: not listening ERROR 1 could not connect to server: Connection refused (0x0000274D/10061) Is the server running on host “” and accepting TCP/IP connections on port 5432? listen_addresses = ‘*’ in /etc/postgresql/9.1/main/postgresql.conf. ERROR 2 FATAL: no pg_hba.conf entry for host “”, user […]