On 5/26/23 08:38, Peter J. Holzer wrote:
On 2023-05-25 08:10:42 -0500, Ron wrote:
(You can create the FKs ahead of time, but use the NOT VALID clause; then,
after data is loaded do ALTER TABLE ... VALIDATE CONSTRAINT.)
I don't think this will work:
| Normally, [ADD CONSTRAINT] will cause a sca
On 2023-05-25 08:10:42 -0500, Ron wrote:
> (You can create the FKs ahead of time, but use the NOT VALID clause; then,
> after data is loaded do ALTER TABLE ... VALIDATE CONSTRAINT.)
I don't think this will work:
| Normally, [ADD CONSTRAINT] will cause a scan of the table to verify
| that all exis
Em qui., 25 de mai. de 2023 às 08:30, Sengottaiyan T
escreveu:
> 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
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) afte
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 wrote:
> If I read your email correctly, I see two options
> - Apply
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, Se
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
resp
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
