Date: Wed, 15 Feb 2006 20:45:00 +0100
From: Maciej Piekielniak <piechcio@isb.com.pl>
Reply-To: Maciej Piekielniak <piechcio@isb.com.pl>
Message-ID: <1112676794.20060215204500@isb.com.pl>
To: pgsql-sql@postgresql.org
Subject: Re: alter table
Resent-From: Maciej Piekielniak <piechcio@isb.com.pl>
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Resent-Date: Wed, 15 Feb 2006 20:42:17 +0100 (CET)

Hello Owen,

Wednesday, February 15, 2006, 8:31:17 PM, you wrote:
OJ> Note that prior to 8.0 PostgreSQL does not support multiple ALTER actions in a single query.  To get an equivalent effect, wrap separate ALTER TABLE queries in a transaction:

OJ> BEGIN;
OJ> alter table xyz alter column id set default nextval('xyz_seq');
OJ> alter table xyz alter column foo set default '';
OJ> COMMIT;
OJ> Also, are you sure you want '' as a column default, and not ALTER COLUMN foo DROP DEFAULT?
OJ> -Owen

OK. THX. Second question:

First, maybe set many fields with the same action - ex. set default?

Ex. on mysql

ALTER TABLE proc MODIFY name char(64) DEFAULT '' NOT NULL,
                 MODIFY specific_name char(64) DEFAULT '' NOT NULL,
                 MODIFY sql_data_access
                        enum('CONTAINS_SQL',
                             'NO_SQL',
                             'READS_SQL_DATA',
                             'MODIFIES_SQL_DATA'
                            ) DEFAULT 'CONTAINS_SQL' NOT NULL....


Second, can i modify more than 1 option with alter table on one field?:

ex (mysql):
ALTER TABLE proc MODIFY name varchar(64) DEFAULT '' NOT NULL;


-- 
Best regards,
 Maciej                            mailto:piechcio@isb.com.pl