I am using SQLAlchemy and postgres database. I want to do "Delete and Insert operation" on the table in a single transaction *without using orm.*
Say *table User* Column | Type | Modifiers --------+-------------------+--------------------------------------------------- id | integer | not null default nextval('test_id_seq'::regclass) name | character varying | All users from table are retrieved and displayed at small time interval.(2 secs) say u1,u2,u3 are current users in DB. Updated user list is u3,u4,u5. Now i have to delete [u1,u2 ] & add [u4,u5]. This deletion and addition of users should be in single transaction so that users retrieved/displayed from table are either [u1,u2,u3] or [u3,u4,u5] . And to avoid retrieval of transitional list of users say [ u1 ] (after deletion). In the similar steps it is required to do bulk deletion and bulk addition in a single transaction. Thanks Santosh -- SQLAlchemy - The Python SQL Toolkit and Object Relational Mapper http://www.sqlalchemy.org/ To post example code, please provide an MCVE: Minimal, Complete, and Verifiable Example. See http://stackoverflow.com/help/mcve for a full description. --- You received this message because you are subscribed to the Google Groups "sqlalchemy" group. To unsubscribe from this group and stop receiving emails from it, send an email to sqlalchemy+unsubscr...@googlegroups.com. To post to this group, send email to sqlalchemy@googlegroups.com. Visit this group at https://groups.google.com/group/sqlalchemy. For more options, visit https://groups.google.com/d/optout.