Re: ALTER TABLE for field modify...

On 03-May-2002 Nick Fankhauser wrote:
> alter table <tablename> drop constraint ID unique;
> alter table <tablename> drop constraint ID not null;
>
> alter table <tablename> add constraint ID references table2 ;
>

Hi!

It not works. :(
I try it:
proba=# create table "tabla1" ("ID" int8 NOT NULL UNIQUE, "nev" varchar(20) );
NOTICE: CREATE TABLE/UNIQUE will create implicit index 'tabla1_ID_key' for
table 'tabla1'
CREATE
proba=# create table "tabla2" ("ID2" int8 NOT NULL UNIQUE, "nev2" varchar(20) );
NOTICE: CREATE TABLE/UNIQUE will create implicit index 'tabla2_ID2_key' for
table 'tabla2'
CREATE

proba=# alter table tabla1 drop constraint ID not null;
ERROR: parser: parse error at or near "not"
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What is the problem?

Bye!
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Linux RedHat 7.1
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