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" ------------------------------------------- What is the problem? Bye! ----------------- Linux RedHat 7.1 ----------------- ---------------------------(end of broadcast)--------------------------- TIP 5: Have you checked our extensive FAQ? http://www.postgresql.org/users-lounge/docs/faq.html