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Re: [GENERAL] create table if does not exists
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Chris
Jan 7, 2010, 9:22:55 PM1/7/10
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Yan Cheng Cheok wrote:
> I try to have the following stored procedure, to help me create tables, if the table does not exists (Is this a good practice by the way?)
>
>
> if not exists(select * from information_schema.tables where table_name = 'MYTABLE') then
>
> RAISE NOTICE 'table not there yet.';
>
> CREATE TABLE MYTABLE
> (
> "value" text NOT NULL
> );
>
> end if;
>
>
> When I run for the 2nd time, 'table not there yet.' still being printed out, al though I check through pgadmin, the MYTABLE is there.
>
> May I know how I can fix this?
> I try to have the following stored procedure, to help me create tables, if the table does not exists (Is this a good practice by the way?)
>
>
> if not exists(select * from information_schema.tables where table_name = 'MYTABLE') then
>
> RAISE NOTICE 'table not there yet.';
>
> CREATE TABLE MYTABLE
> (
> "value" text NOT NULL
> );
>
> end if;
>
>
> When I run for the 2nd time, 'table not there yet.' still being printed out, al though I check through pgadmin, the MYTABLE is there.
>
> May I know how I can fix this?
The table will be named "mytable" rather than 'MYTABLE'.
Postgres lowercases names (tables, fields etc) unless you put them in
quotes ("LikeThis") - but then you always have to quote them like that.
If you change your check to be
where table_name='mytable'
it should get picked up correctly.
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