Re: patch: option --if-exists for pg_dump - Mailing list pgsql-hackers

2014-01-29 Jeevan Chalke <jeevan.chalke@enterprisedb.com>

Hi Pavel,

Now the patch looks good to me. However when I try to restore your own sql file's dump, I get following errors:

pg_restore: [archiver (db)] could not execute query: ERROR:  relation "public.emp" does not exist
    Command was: DROP TRIGGER IF EXISTS emp_insert_trigger ON public.emp;

pg_restore: [archiver (db)] could not execute query: ERROR:  schema "myschema" does not exist
    Command was: DROP FUNCTION IF EXISTS myschema.int_to_date(integer);

Is that expected after your patch ?

it should be fixed by http://git.postgresql.org/gitweb/?p=postgresql.git;a=commitdiff;h=b152c6cd0de1827ba58756e24e18110cf902182a commit

 

Also, I didn't quite understand these lines of comments:

                        /*
                         * Descriptor string (te-desc) should not be same as object
                         * specifier for DROP STATEMENT. The DROP DEFAULT has not
                         * IF EXISTS clause - has not sense.
                         */

Will you please rephrase ?

I can try it - .

A content of te->desc is usually substring of DROP STATEMENT with one related exception - CONSTRAINT.

Independent to previous sentence - ALTER TABLE ALTER COLUMN DROP DEFAULT doesn't support IF EXISTS - and therefore it should not be injected.

Regards

Pavel

 

Thanks

--

Jeevan B Chalke
Principal Software Engineer, Product Development
EnterpriseDB Corporation
The Enterprise PostgreSQL Company