Petr Jelinek <[email protected]> writes:
> CREATE TABLE records dependency between relation and type, not between
> column and type, but ALTER TABLE ADD COLUMN and ALTER TABLE ALTER COLUMN
> TYPE record dependencies between relation column and type and not
> between relation and type
Really? I get
regression=# CREATE TYPE droppabletype1 AS (a integer, b text);
CREATE TYPE
regression=# CREATE TABLE testtable (droppablecol1 droppabletype1,
undroppablecol1 int);
CREATE TABLE
regression=# CREATE TYPE droppabletype2 AS (a integer, b text);
CREATE TYPE
regression=# alter table testtable add column f3 droppabletype2;
ALTER TABLE
regression=# select pg_describe_object(classid,objid,objsubid) as obj,
pg_describe_object(refclassid,refobjid,refobjsubid) as ref, deptype from
pg_depend where refobjid = 'droppabletype1'::regtype;
obj | ref | deptype
--------------------------------------+---------------------+---------
composite type droppabletype1 | type droppabletype1 | i
type droppabletype1[] | type droppabletype1 | i
table testtable column droppablecol1 | type droppabletype1 | n
(3 rows)
regression=# select pg_describe_object(classid,objid,objsubid) as obj,
pg_describe_object(refclassid,refobjid,refobjsubid) as ref, deptype from
pg_depend where refobjid = 'droppabletype2'::regtype;
obj | ref | deptype
-------------------------------+---------------------+---------
composite type droppabletype2 | type droppabletype2 | i
type droppabletype2[] | type droppabletype2 | i
table testtable column f3 | type droppabletype2 | n
(3 rows)
The dependencies look just the same to me ...
regards, tom lane
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