create table if does not exists
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?
Thanks and Regards
Yan Cheng CHEOK
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?
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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