-- with explicitly specified not null constraints
create table inh_parent_1(f1 int);
create table inh_parent_2(f2 text);
-create table child(f1 int not null, f2 text not null) inherits(inh_parent_1, inh_parent_2);
+create table inh_child(f1 int not null, f2 text not null) inherits(inh_parent_1, inh_parent_2);
NOTICE: merging column "f1" with inherited definition
NOTICE: merging column "f2" with inherited definition
-- show constraint info
select conrelid::regclass, conname, contype, coninhcount, conislocal
from pg_constraint where contype = 'n' and
- conrelid in ('inh_parent_1'::regclass, 'inh_parent_2'::regclass, 'child'::regclass)
+ conrelid in ('inh_parent_1'::regclass, 'inh_parent_2'::regclass, 'inh_child'::regclass)
order by 2, 1;
- conrelid | conname | contype | coninhcount | conislocal
-----------+-------------------+---------+-------------+------------
- child | child_f1_not_null | n | 0 | t
- child | child_f2_not_null | n | 0 | t
+ conrelid | conname | contype | coninhcount | conislocal
+-----------+-----------------------+---------+-------------+------------
+ inh_child | inh_child_f1_not_null | n | 0 | t
+ inh_child | inh_child_f2_not_null | n | 0 | t
(2 rows)
--- also drops child table
+-- also drops inh_child table
drop table inh_parent_1 cascade;
-NOTICE: drop cascades to table child
+NOTICE: drop cascades to table inh_child
drop table inh_parent_2;
-- test multi layer inheritance tree
create table inh_p1(f1 int not null);
-- with explicitly specified not null constraints
create table inh_parent_1(f1 int);
create table inh_parent_2(f2 text);
-create table child(f1 int not null, f2 text not null) inherits(inh_parent_1, inh_parent_2);
+create table inh_child(f1 int not null, f2 text not null) inherits(inh_parent_1, inh_parent_2);
-- show constraint info
select conrelid::regclass, conname, contype, coninhcount, conislocal
from pg_constraint where contype = 'n' and
- conrelid in ('inh_parent_1'::regclass, 'inh_parent_2'::regclass, 'child'::regclass)
+ conrelid in ('inh_parent_1'::regclass, 'inh_parent_2'::regclass, 'inh_child'::regclass)
order by 2, 1;
--- also drops child table
+-- also drops inh_child table
drop table inh_parent_1 cascade;
drop table inh_parent_2;