Обсуждение: Query in SQL statement

Am trying to port a mysql statement to postgres.

Please help me in finding the error in this,


CREATE SEQUENCE ai_id;
CREATE TABLE badusers (
  id int DEFAULT nextval('ai_id') NOT NULL,
  UserName varchar(30),
  Date  datetime DEFAULT '0000-00-00 00:00:00' NOT NULL,
  Reason varchar(200),
  Admin varchar(30) DEFAULT '-',
  PRIMARY KEY (id),
  KEY UserName (UserName),
  KEY Date (Date)
);


Am always getting foll. Errors,

ERROR:  relation "ai_id" already exists
ERROR:  syntax error at or near "(" at character 240

Thanks,
Rajesh R

R, Rajesh (STSD) wrote:
>
> Am trying to port a mysql statement to postgres.
>
> Please help me in finding the error in this,

Can I recommend the reference section of the manuals for this sort of
thing? There is an excellent section detailing the valid SQL for the
CREATE TABLE command.

Also - the pgsql-hackers list is for discussion of database development,
and the performance list is for performance problems. This would be
better posted on pgsql-general or -sql or -novice.

> CREATE SEQUENCE ai_id;

This line is causing the first error:
 > ERROR:  relation "ai_id" already exists

That's because you've already successfully created the sequence, so it
already exists. Either drop it and recreate it, or stop trying to
recreate it.

> CREATE TABLE badusers (
>   id int DEFAULT nextval('ai_id') NOT NULL,
>   UserName varchar(30),
>   Date  datetime DEFAULT '0000-00-00 00:00:00' NOT NULL,

Well, "Date" is a type-name, "datetime" isn't and even if it was
"0000-00-00" isn't a valid date is it?

>   Reason varchar(200),
>   Admin varchar(30) DEFAULT '-',
>   PRIMARY KEY (id),
>   KEY UserName (UserName),
>   KEY Date (Date)

The word "KEY" isn't valid here either - are you trying to define an
index? If so, see the "CREATE INDEX" section of the SQL reference.

http://www.postgresql.org/docs/8.0/static/sql-commands.html

If you reply to this message, please remove the pgsql-hackers CC:
--
   Richard Huxton
   Archonet Ltd

R, Rajesh (STSD) wrote:
> Thanks.
> I've already understood that
> I need to post it in another list.
>
> Sorry for wasting your precious time.

No time wasted. It was a perfectly reasonable question, just to the
wrong lists.

--
   Richard Huxton
   Archonet Ltd