Search Postgresql Archives

Re: PostgreSQL vs Firebird feature comparison finished

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



--- Tony Caduto <tony_caduto@xxxxxxxxxxxxxxxxxxxx> wrote:

> Check it out here:
> 
> http://www.amsoftwaredesign.com/pg_vs_fb

One row that you could elaborate on is:
CHECK CONSTRAINTS support for correlated sub-queries.
PostgreSQL doesn't official support this kink of constraint unless it is rolled up in a function. 
I am not sure what support FB has for this.

Another Constraint row you could add would be:
CREATE ASSERTION  which is a schema level constraint.  Currently PostgreSQL doesn't support this,
I am not sure if FB does either.

Also you could mention PostgreSQL support for row-wise comparison:
i.e. WHERE ( last_name, city, gender ) = ( 'Doe', 'Paris', 'female' );

and PostgreSQL support for additional SQL comparison operators:
i.e. WHERE (( last_name, city, gender ) = ( 'Doe', 'Paris', 'female' )) IS UNKNOWN;
-- return all people who might meet this criteria if their null field where known.

Regards,
Richard Broersma Jr.


---------------------------(end of broadcast)---------------------------
TIP 3: Have you checked our extensive FAQ?

               http://www.postgresql.org/docs/faq

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
[Index of Archives]     [Postgresql Jobs]     [Postgresql Admin]     [Postgresql Performance]     [Linux Clusters]     [PHP Home]     [PHP on Windows]     [Kernel Newbies]     [PHP Classes]     [PHP Books]     [PHP Databases]     [Postgresql & PHP]     [Yosemite]
  Powered by Linux