I don't remember, to be honest. ALTER TABLE ... VALIDATE CONSTRAINT was
/really fast/, though.
Having a supporting index (which Pg does /not/ automatically create) is
vital, of course.
On 5/25/23 23:16, Sengottaiyan T wrote:
Thanks Ron.
While enabling the constraint (valid constraint) after initial data
import, will it scan all the table data or the validation will happen for
new rows inserted after that point)?
On Thu, May 25, 2023 at 6:40 PM Ron <ronljohnso...@gmail.com> wrote:
If I read your email correctly, I see two options
- Apply FK constraints *after* initial data load.
- Load parent data before child data
(You can create the FKs ahead of time, but use the NOT VALID clause;
then, after data is loaded do ALTER TABLE ... VALIDATE CONSTRAINT.)
On 5/25/23 06:30, Sengottaiyan T wrote:
Is there an option to set novalidate constraints in postgres? In my
source Sybase DB, table structures are not defined properly (only
primary keys exist and no foreign key) - I'm making necessary changes
on target Postgres DB (created tables, identifying relationship
between table columns with respective team). After creating proper
structure on target, the next step is to load data - I'm sure there
will be a lot of errors during initial data load (no parent record
found). How to handle it?
On Tue, Mar 28, 2023 at 3:22 PM Sengottaiyan T <techse...@gmail.com>
wrote:
Team,
Need some help regarding Open Source tools for DB migration (from
SYBASE to PostgreSQL) with real time CDC. Along with this, is
there any possibility to migrate other objects (like Triggers,
Stored Procedures and Functions) to PostgreSQL?
Thanks,
Senko
--
Born in Arizona, moved to Babylonia.
--
Born in Arizona, moved to Babylonia.
