-- -- RULES -- From Jan's original setup_ruletest.sql and run_ruletest.sql -- - thomas 1998-09-13 -- -- -- Tables and rules for the view test -- create table rtest_t1 (a int4, b int4); create table rtest_t2 (a int4, b int4); create table rtest_t3 (a int4, b int4); create view rtest_v1 as select * from rtest_t1; create rule rtest_v1_ins as on insert to rtest_v1 do instead insert into rtest_t1 values (new.a, new.b); create rule rtest_v1_upd as on update to rtest_v1 do instead update rtest_t1 set a = new.a, b = new.b where a = old.a; create rule rtest_v1_del as on delete to rtest_v1 do instead delete from rtest_t1 where a = old.a; -- -- Tables and rules for the constraint update/delete test -- -- Note: -- Now that we have multiple action rule support, we check -- both possible syntaxes to define them (The last action -- can but must not have a semicolon at the end). -- create table rtest_system (sysname text, sysdesc text); create table rtest_interface (sysname text, ifname text); create table rtest_person (pname text, pdesc text); create table rtest_admin (pname text, sysname text); create rule rtest_sys_upd as on update to rtest_system do ( update rtest_interface set sysname = new.sysname where sysname = old.sysname; update rtest_admin set sysname = new.sysname where sysname = old.sysname ); create rule rtest_sys_del as on delete to rtest_system do ( delete from rtest_interface where sysname = old.sysname; delete from rtest_admin where sysname = old.sysname; ); create rule rtest_pers_upd as on update to rtest_person do update rtest_admin set pname = new.pname where pname = old.pname; create rule rtest_pers_del as on delete to rtest_person do delete from rtest_admin where pname = old.pname; -- -- Tables and rules for the logging test -- create table rtest_emp (ename char(20), salary money); create table rtest_emplog (ename char(20), who name, action char(10), newsal money, oldsal money); create table rtest_empmass (ename char(20), salary money); create rule rtest_emp_ins as on insert to rtest_emp do insert into rtest_emplog values (new.ename, current_user, 'hired', new.salary, '0.00'); create rule rtest_emp_upd as on update to rtest_emp where new.salary != old.salary do insert into rtest_emplog values (new.ename, current_user, 'honored', new.salary, old.salary); create rule rtest_emp_del as on delete to rtest_emp do insert into rtest_emplog values (old.ename, current_user, 'fired', '0.00', old.salary); -- -- Tables and rules for the multiple cascaded qualified instead -- rule test -- create table rtest_t4 (a int4, b text); create table rtest_t5 (a int4, b text); create table rtest_t6 (a int4, b text); create table rtest_t7 (a int4, b text); create table rtest_t8 (a int4, b text); create table rtest_t9 (a int4, b text); create rule rtest_t4_ins1 as on insert to rtest_t4 where new.a >= 10 and new.a < 20 do instead insert into rtest_t5 values (new.a, new.b); create rule rtest_t4_ins2 as on insert to rtest_t4 where new.a >= 20 and new.a < 30 do insert into rtest_t6 values (new.a, new.b); create rule rtest_t5_ins as on insert to rtest_t5 where new.a > 15 do insert into rtest_t7 values (new.a, new.b); create rule rtest_t6_ins as on insert to rtest_t6 where new.a > 25 do instead insert into rtest_t8 values (new.a, new.b); -- -- Tables and rules for the rule fire order test -- create table rtest_order1 (a int4); create table rtest_order2 (a int4, b int4, c text); create sequence rtest_seq; create rule rtest_order_r3 as on insert to rtest_order1 do instead insert into rtest_order2 values (new.a, nextval('rtest_seq'), 'rule 3 - this should run 3rd or 4th'); create rule rtest_order_r4 as on insert to rtest_order1 where a < 100 do instead insert into rtest_order2 values (new.a, nextval('rtest_seq'), 'rule 4 - this should run 2nd'); create rule rtest_order_r2 as on insert to rtest_order1 do insert into rtest_order2 values (new.a, nextval('rtest_seq'), 'rule 2 - this should run 1st'); create rule rtest_order_r1 as on insert to rtest_order1 do instead insert into rtest_order2 values (new.a, nextval('rtest_seq'), 'rule 1 - this should run 3rd or 4th'); -- -- Tables and rules for the instead nothing test -- create table rtest_nothn1 (a int4, b text); create table rtest_nothn2 (a int4, b text); create table rtest_nothn3 (a int4, b text); create table rtest_nothn4 (a int4, b text); create rule rtest_nothn_r1 as on insert to rtest_nothn1 where new.a >= 10 and new.a < 20 do instead (select 1); create rule rtest_nothn_r2 as on insert to rtest_nothn1 where new.a >= 30 and new.a < 40 do instead nothing; create rule rtest_nothn_r3 as on insert to rtest_nothn2 where new.a >= 100 do instead insert into rtest_nothn3 values (new.a, new.b); create rule rtest_nothn_r4 as on insert to rtest_nothn2 do instead nothing; -- -- Tests on a view that is select * of a table -- and has insert/update/delete instead rules to -- behave close like the real table. -- -- -- We need test date later -- insert into rtest_t2 values (1, 21); insert into rtest_t2 values (2, 22); insert into rtest_t2 values (3, 23); insert into rtest_t3 values (1, 31); insert into rtest_t3 values (2, 32); insert into rtest_t3 values (3, 33); insert into rtest_t3 values (4, 34); insert into rtest_t3 values (5, 35); -- insert values insert into rtest_v1 values (1, 11); insert into rtest_v1 values (2, 12); select * from rtest_v1; a | b ---+---- 1 | 11 2 | 12 (2 rows) -- delete with constant expression delete from rtest_v1 where a = 1; select * from rtest_v1; a | b ---+---- 2 | 12 (1 row) insert into rtest_v1 values (1, 11); delete from rtest_v1 where b = 12; select * from rtest_v1; a | b ---+---- 1 | 11 (1 row) insert into rtest_v1 values (2, 12); insert into rtest_v1 values (2, 13); select * from rtest_v1; a | b ---+---- 1 | 11 2 | 12 2 | 13 (3 rows) ** Remember the delete rule on rtest_v1: It says ** DO INSTEAD DELETE FROM rtest_t1 WHERE a = old.a ** So this time both rows with a = 2 must get deleted \p ** Remember the delete rule on rtest_v1: It says ** DO INSTEAD DELETE FROM rtest_t1 WHERE a = old.a ** So this time both rows with a = 2 must get deleted \r delete from rtest_v1 where b = 12; select * from rtest_v1; a | b ---+---- 1 | 11 (1 row) delete from rtest_v1; -- insert select insert into rtest_v1 select * from rtest_t2; select * from rtest_v1; a | b ---+---- 1 | 21 2 | 22 3 | 23 (3 rows) delete from rtest_v1; -- same with swapped targetlist insert into rtest_v1 (b, a) select b, a from rtest_t2; select * from rtest_v1; a | b ---+---- 1 | 21 2 | 22 3 | 23 (3 rows) -- now with only one target attribute insert into rtest_v1 (a) select a from rtest_t3; select * from rtest_v1; a | b ---+---- 1 | 21 2 | 22 3 | 23 1 | 2 | 3 | 4 | 5 | (8 rows) select * from rtest_v1 where b isnull; a | b ---+--- 1 | 2 | 3 | 4 | 5 | (5 rows) -- let attribute a differ (must be done on rtest_t1 - see above) update rtest_t1 set a = a + 10 where b isnull; delete from rtest_v1 where b isnull; select * from rtest_v1; a | b ---+---- 1 | 21 2 | 22 3 | 23 (3 rows) -- now updates with constant expression update rtest_v1 set b = 42 where a = 2; select * from rtest_v1; a | b ---+---- 1 | 21 3 | 23 2 | 42 (3 rows) update rtest_v1 set b = 99 where b = 42; select * from rtest_v1; a | b ---+---- 1 | 21 3 | 23 2 | 99 (3 rows) update rtest_v1 set b = 88 where b < 50; select * from rtest_v1; a | b ---+---- 2 | 99 1 | 88 3 | 88 (3 rows) delete from rtest_v1; insert into rtest_v1 select rtest_t2.a, rtest_t3.b where rtest_t2.a = rtest_t3.a; select * from rtest_v1; a | b ---+---- 1 | 31 2 | 32 3 | 33 (3 rows) -- updates in a mergejoin update rtest_v1 set b = rtest_t2.b where a = rtest_t2.a; select * from rtest_v1; a | b ---+---- 1 | 21 2 | 22 3 | 23 (3 rows) insert into rtest_v1 select * from rtest_t3; select * from rtest_v1; a | b ---+---- 1 | 21 2 | 22 3 | 23 1 | 31 2 | 32 3 | 33 4 | 34 5 | 35 (8 rows) update rtest_t1 set a = a + 10 where b > 30; select * from rtest_v1; a | b ----+---- 1 | 21 2 | 22 3 | 23 11 | 31 12 | 32 13 | 33 14 | 34 15 | 35 (8 rows) update rtest_v1 set a = rtest_t3.a + 20 where b = rtest_t3.b; select * from rtest_v1; a | b ----+---- 1 | 21 2 | 22 3 | 23 21 | 31 22 | 32 23 | 33 24 | 34 25 | 35 (8 rows) -- -- Test for constraint updates/deletes -- insert into rtest_system values ('orion', 'Linux Jan Wieck'); insert into rtest_system values ('notjw', 'WinNT Jan Wieck (notebook)'); insert into rtest_system values ('neptun', 'Fileserver'); insert into rtest_interface values ('orion', 'eth0'); insert into rtest_interface values ('orion', 'eth1'); insert into rtest_interface values ('notjw', 'eth0'); insert into rtest_interface values ('neptun', 'eth0'); insert into rtest_person values ('jw', 'Jan Wieck'); insert into rtest_person values ('bm', 'Bruce Momjian'); insert into rtest_admin values ('jw', 'orion'); insert into rtest_admin values ('jw', 'notjw'); insert into rtest_admin values ('bm', 'neptun'); update rtest_system set sysname = 'pluto' where sysname = 'neptun'; select * from rtest_interface; sysname | ifname ---------+-------- orion | eth0 orion | eth1 notjw | eth0 pluto | eth0 (4 rows) select * from rtest_admin; pname | sysname -------+--------- jw | orion jw | notjw bm | pluto (3 rows) update rtest_person set pname = 'jwieck' where pdesc = 'Jan Wieck'; -- Note: use ORDER BY here to ensure consistent output across all systems. -- The above UPDATE affects two rows with equal keys, so they could be -- updated in either order depending on the whim of the local qsort(). select * from rtest_admin order by pname, sysname; pname | sysname --------+--------- bm | pluto jwieck | notjw jwieck | orion (3 rows) delete from rtest_system where sysname = 'orion'; select * from rtest_interface; sysname | ifname ---------+-------- notjw | eth0 pluto | eth0 (2 rows) select * from rtest_admin; pname | sysname --------+--------- bm | pluto jwieck | notjw (2 rows) -- -- Rule qualification test -- insert into rtest_emp values ('wiech', '5000.00'); insert into rtest_emp values ('gates', '80000.00'); update rtest_emp set ename = 'wiecx' where ename = 'wiech'; update rtest_emp set ename = 'wieck', salary = '6000.00' where ename = 'wiecx'; update rtest_emp set salary = '7000.00' where ename = 'wieck'; delete from rtest_emp where ename = 'gates'; select ename, who = current_user as "matches user", action, newsal, oldsal from rtest_emplog order by ename, action, newsal; ename | matches user | action | newsal | oldsal ----------------------+--------------+------------+------------+------------ gates | t | fired | $0.00 | $80,000.00 gates | t | hired | $80,000.00 | $0.00 wiech | t | hired | $5,000.00 | $0.00 wieck | t | honored | $6,000.00 | $5,000.00 wieck | t | honored | $7,000.00 | $6,000.00 (5 rows) insert into rtest_empmass values ('meyer', '4000.00'); insert into rtest_empmass values ('maier', '5000.00'); insert into rtest_empmass values ('mayr', '6000.00'); insert into rtest_emp select * from rtest_empmass; select ename, who = current_user as "matches user", action, newsal, oldsal from rtest_emplog order by ename, action, newsal; ename | matches user | action | newsal | oldsal ----------------------+--------------+------------+------------+------------ gates | t | fired | $0.00 | $80,000.00 gates | t | hired | $80,000.00 | $0.00 maier | t | hired | $5,000.00 | $0.00 mayr | t | hired | $6,000.00 | $0.00 meyer | t | hired | $4,000.00 | $0.00 wiech | t | hired | $5,000.00 | $0.00 wieck | t | honored | $6,000.00 | $5,000.00 wieck | t | honored | $7,000.00 | $6,000.00 (8 rows) update rtest_empmass set salary = salary + '1000.00'; update rtest_emp set salary = rtest_empmass.salary where ename = rtest_empmass.ename; select ename, who = current_user as "matches user", action, newsal, oldsal from rtest_emplog order by ename, action, newsal; ename | matches user | action | newsal | oldsal ----------------------+--------------+------------+------------+------------ gates | t | fired | $0.00 | $80,000.00 gates | t | hired | $80,000.00 | $0.00 maier | t | hired | $5,000.00 | $0.00 maier | t | honored | $6,000.00 | $5,000.00 mayr | t | hired | $6,000.00 | $0.00 mayr | t | honored | $7,000.00 | $6,000.00 meyer | t | hired | $4,000.00 | $0.00 meyer | t | honored | $5,000.00 | $4,000.00 wiech | t | hired | $5,000.00 | $0.00 wieck | t | honored | $6,000.00 | $5,000.00 wieck | t | honored | $7,000.00 | $6,000.00 (11 rows) delete from rtest_emp where ename = rtest_empmass.ename; select ename, who = current_user as "matches user", action, newsal, oldsal from rtest_emplog order by ename, action, newsal; ename | matches user | action | newsal | oldsal ----------------------+--------------+------------+------------+------------ gates | t | fired | $0.00 | $80,000.00 gates | t | hired | $80,000.00 | $0.00 maier | t | fired | $0.00 | $6,000.00 maier | t | hired | $5,000.00 | $0.00 maier | t | honored | $6,000.00 | $5,000.00 mayr | t | fired | $0.00 | $7,000.00 mayr | t | hired | $6,000.00 | $0.00 mayr | t | honored | $7,000.00 | $6,000.00 meyer | t | fired | $0.00 | $5,000.00 meyer | t | hired | $4,000.00 | $0.00 meyer | t | honored | $5,000.00 | $4,000.00 wiech | t | hired | $5,000.00 | $0.00 wieck | t | honored | $6,000.00 | $5,000.00 wieck | t | honored | $7,000.00 | $6,000.00 (14 rows) -- -- Multiple cascaded qualified instead rule test -- insert into rtest_t4 values (1, 'Record should go to rtest_t4'); insert into rtest_t4 values (2, 'Record should go to rtest_t4'); insert into rtest_t4 values (10, 'Record should go to rtest_t5'); insert into rtest_t4 values (15, 'Record should go to rtest_t5'); insert into rtest_t4 values (19, 'Record should go to rtest_t5 and t7'); insert into rtest_t4 values (20, 'Record should go to rtest_t4 and t6'); insert into rtest_t4 values (26, 'Record should go to rtest_t4 and t8'); insert into rtest_t4 values (28, 'Record should go to rtest_t4 and t8'); insert into rtest_t4 values (30, 'Record should go to rtest_t4'); insert into rtest_t4 values (40, 'Record should go to rtest_t4'); select * from rtest_t4; a | b ----+------------------------------------- 1 | Record should go to rtest_t4 2 | Record should go to rtest_t4 20 | Record should go to rtest_t4 and t6 26 | Record should go to rtest_t4 and t8 28 | Record should go to rtest_t4 and t8 30 | Record should go to rtest_t4 40 | Record should go to rtest_t4 (7 rows) select * from rtest_t5; a | b ----+------------------------------------- 10 | Record should go to rtest_t5 15 | Record should go to rtest_t5 19 | Record should go to rtest_t5 and t7 (3 rows) select * from rtest_t6; a | b ----+------------------------------------- 20 | Record should go to rtest_t4 and t6 (1 row) select * from rtest_t7; a | b ----+------------------------------------- 19 | Record should go to rtest_t5 and t7 (1 row) select * from rtest_t8; a | b ----+------------------------------------- 26 | Record should go to rtest_t4 and t8 28 | Record should go to rtest_t4 and t8 (2 rows) delete from rtest_t4; delete from rtest_t5; delete from rtest_t6; delete from rtest_t7; delete from rtest_t8; insert into rtest_t9 values (1, 'Record should go to rtest_t4'); insert into rtest_t9 values (2, 'Record should go to rtest_t4'); insert into rtest_t9 values (10, 'Record should go to rtest_t5'); insert into rtest_t9 values (15, 'Record should go to rtest_t5'); insert into rtest_t9 values (19, 'Record should go to rtest_t5 and t7'); insert into rtest_t9 values (20, 'Record should go to rtest_t4 and t6'); insert into rtest_t9 values (26, 'Record should go to rtest_t4 and t8'); insert into rtest_t9 values (28, 'Record should go to rtest_t4 and t8'); insert into rtest_t9 values (30, 'Record should go to rtest_t4'); insert into rtest_t9 values (40, 'Record should go to rtest_t4'); insert into rtest_t4 select * from rtest_t9 where a < 20; select * from rtest_t4; a | b ---+------------------------------ 1 | Record should go to rtest_t4 2 | Record should go to rtest_t4 (2 rows) select * from rtest_t5; a | b ----+------------------------------------- 10 | Record should go to rtest_t5 15 | Record should go to rtest_t5 19 | Record should go to rtest_t5 and t7 (3 rows) select * from rtest_t6; a | b ---+--- (0 rows) select * from rtest_t7; a | b ----+------------------------------------- 19 | Record should go to rtest_t5 and t7 (1 row) select * from rtest_t8; a | b ---+--- (0 rows) insert into rtest_t4 select * from rtest_t9 where b ~ 'and t8'; select * from rtest_t4; a | b ----+------------------------------------- 1 | Record should go to rtest_t4 2 | Record should go to rtest_t4 26 | Record should go to rtest_t4 and t8 28 | Record should go to rtest_t4 and t8 (4 rows) select * from rtest_t5; a | b ----+------------------------------------- 10 | Record should go to rtest_t5 15 | Record should go to rtest_t5 19 | Record should go to rtest_t5 and t7 (3 rows) select * from rtest_t6; a | b ---+--- (0 rows) select * from rtest_t7; a | b ----+------------------------------------- 19 | Record should go to rtest_t5 and t7 (1 row) select * from rtest_t8; a | b ----+------------------------------------- 26 | Record should go to rtest_t4 and t8 28 | Record should go to rtest_t4 and t8 (2 rows) insert into rtest_t4 select a + 1, b from rtest_t9 where a in (20, 30, 40); select * from rtest_t4; a | b ----+------------------------------------- 1 | Record should go to rtest_t4 2 | Record should go to rtest_t4 26 | Record should go to rtest_t4 and t8 28 | Record should go to rtest_t4 and t8 21 | Record should go to rtest_t4 and t6 31 | Record should go to rtest_t4 41 | Record should go to rtest_t4 (7 rows) select * from rtest_t5; a | b ----+------------------------------------- 10 | Record should go to rtest_t5 15 | Record should go to rtest_t5 19 | Record should go to rtest_t5 and t7 (3 rows) select * from rtest_t6; a | b ----+------------------------------------- 21 | Record should go to rtest_t4 and t6 (1 row) select * from rtest_t7; a | b ----+------------------------------------- 19 | Record should go to rtest_t5 and t7 (1 row) select * from rtest_t8; a | b ----+------------------------------------- 26 | Record should go to rtest_t4 and t8 28 | Record should go to rtest_t4 and t8 (2 rows) -- -- Check that the ordering of rules fired is correct -- insert into rtest_order1 values (1); select * from rtest_order2; a | b | c ---+---+------------------------------------- 1 | 1 | rule 2 - this should run 1st 1 | 2 | rule 4 - this should run 2nd 1 | 3 | rule 3 - this should run 3rd or 4th 1 | 4 | rule 1 - this should run 3rd or 4th (4 rows) -- -- Check if instead nothing w/without qualification works -- insert into rtest_nothn1 values (1, 'want this'); insert into rtest_nothn1 values (2, 'want this'); insert into rtest_nothn1 values (10, 'don''t want this'); insert into rtest_nothn1 values (19, 'don''t want this'); insert into rtest_nothn1 values (20, 'want this'); insert into rtest_nothn1 values (29, 'want this'); insert into rtest_nothn1 values (30, 'don''t want this'); insert into rtest_nothn1 values (39, 'don''t want this'); insert into rtest_nothn1 values (40, 'want this'); insert into rtest_nothn1 values (50, 'want this'); insert into rtest_nothn1 values (60, 'want this'); select * from rtest_nothn1; a | b ----+----------- 1 | want this 2 | want this 20 | want this 29 | want this 40 | want this 50 | want this 60 | want this (7 rows) insert into rtest_nothn2 values (10, 'too small'); insert into rtest_nothn2 values (50, 'too small'); insert into rtest_nothn2 values (100, 'OK'); insert into rtest_nothn2 values (200, 'OK'); select * from rtest_nothn2; a | b ---+--- (0 rows) select * from rtest_nothn3; a | b -----+---- 100 | OK 200 | OK (2 rows) delete from rtest_nothn1; delete from rtest_nothn2; delete from rtest_nothn3; insert into rtest_nothn4 values (1, 'want this'); insert into rtest_nothn4 values (2, 'want this'); insert into rtest_nothn4 values (10, 'don''t want this'); insert into rtest_nothn4 values (19, 'don''t want this'); insert into rtest_nothn4 values (20, 'want this'); insert into rtest_nothn4 values (29, 'want this'); insert into rtest_nothn4 values (30, 'don''t want this'); insert into rtest_nothn4 values (39, 'don''t want this'); insert into rtest_nothn4 values (40, 'want this'); insert into rtest_nothn4 values (50, 'want this'); insert into rtest_nothn4 values (60, 'want this'); insert into rtest_nothn1 select * from rtest_nothn4; select * from rtest_nothn1; a | b ----+----------- 1 | want this 2 | want this 20 | want this 29 | want this 40 | want this 50 | want this 60 | want this (7 rows) delete from rtest_nothn4; insert into rtest_nothn4 values (10, 'too small'); insert into rtest_nothn4 values (50, 'too small'); insert into rtest_nothn4 values (100, 'OK'); insert into rtest_nothn4 values (200, 'OK'); insert into rtest_nothn2 select * from rtest_nothn4; select * from rtest_nothn2; a | b ---+--- (0 rows) select * from rtest_nothn3; a | b -----+---- 100 | OK 200 | OK (2 rows) create table rtest_view1 (a int4, b text, v bool); create table rtest_view2 (a int4); create table rtest_view3 (a int4, b text); create table rtest_view4 (a int4, b text, c int4); create view rtest_vview1 as select a, b from rtest_view1 X where 0 < (select count(*) from rtest_view2 Y where Y.a = X.a); create view rtest_vview2 as select a, b from rtest_view1 where v; create view rtest_vview3 as select a, b from rtest_vview2 X where 0 < (select count(*) from rtest_view2 Y where Y.a = X.a); create view rtest_vview4 as select X.a, X.b, count(Y.a) as refcount from rtest_view1 X, rtest_view2 Y where X.a = Y.a group by X.a, X.b; create function rtest_viewfunc1(int4) returns int4 as 'select count(*) from rtest_view2 where a = $1' language 'sql'; create view rtest_vview5 as select a, b, rtest_viewfunc1(a) as refcount from rtest_view1; insert into rtest_view1 values (1, 'item 1', 't'); insert into rtest_view1 values (2, 'item 2', 't'); insert into rtest_view1 values (3, 'item 3', 't'); insert into rtest_view1 values (4, 'item 4', 'f'); insert into rtest_view1 values (5, 'item 5', 't'); insert into rtest_view1 values (6, 'item 6', 'f'); insert into rtest_view1 values (7, 'item 7', 't'); insert into rtest_view1 values (8, 'item 8', 't'); insert into rtest_view2 values (2); insert into rtest_view2 values (2); insert into rtest_view2 values (4); insert into rtest_view2 values (5); insert into rtest_view2 values (7); insert into rtest_view2 values (7); insert into rtest_view2 values (7); insert into rtest_view2 values (7); select * from rtest_vview1; a | b ---+-------- 2 | item 2 4 | item 4 5 | item 5 7 | item 7 (4 rows) select * from rtest_vview2; a | b ---+-------- 1 | item 1 2 | item 2 3 | item 3 5 | item 5 7 | item 7 8 | item 8 (6 rows) select * from rtest_vview3; a | b ---+-------- 2 | item 2 5 | item 5 7 | item 7 (3 rows) select * from rtest_vview4; a | b | refcount ---+--------+---------- 2 | item 2 | 2 4 | item 4 | 1 5 | item 5 | 1 7 | item 7 | 4 (4 rows) select * from rtest_vview5; a | b | refcount ---+--------+---------- 1 | item 1 | 0 2 | item 2 | 2 3 | item 3 | 0 4 | item 4 | 1 5 | item 5 | 1 6 | item 6 | 0 7 | item 7 | 4 8 | item 8 | 0 (8 rows) insert into rtest_view3 select * from rtest_vview1 where a < 7; select * from rtest_view3; a | b ---+-------- 2 | item 2 4 | item 4 5 | item 5 (3 rows) delete from rtest_view3; insert into rtest_view3 select * from rtest_vview2 where a != 5 and b !~ '2'; select * from rtest_view3; a | b ---+-------- 1 | item 1 3 | item 3 7 | item 7 8 | item 8 (4 rows) delete from rtest_view3; insert into rtest_view3 select * from rtest_vview3; select * from rtest_view3; a | b ---+-------- 2 | item 2 5 | item 5 7 | item 7 (3 rows) delete from rtest_view3; insert into rtest_view4 select * from rtest_vview4 where 3 > refcount; select * from rtest_view4; a | b | c ---+--------+--- 2 | item 2 | 2 4 | item 4 | 1 5 | item 5 | 1 (3 rows) delete from rtest_view4; insert into rtest_view4 select * from rtest_vview5 where a > 2 and refcount = 0; select * from rtest_view4; a | b | c ---+--------+--- 3 | item 3 | 0 6 | item 6 | 0 8 | item 8 | 0 (3 rows) delete from rtest_view4; -- -- Test for computations in views -- create table rtest_comp ( part text, unit char(4), size float ); create table rtest_unitfact ( unit char(4), factor float ); create view rtest_vcomp as select X.part, (X.size * Y.factor) as size_in_cm from rtest_comp X, rtest_unitfact Y where X.unit = Y.unit; insert into rtest_unitfact values ('m', 100.0); insert into rtest_unitfact values ('cm', 1.0); insert into rtest_unitfact values ('inch', 2.54); insert into rtest_comp values ('p1', 'm', 5.0); insert into rtest_comp values ('p2', 'm', 3.0); insert into rtest_comp values ('p3', 'cm', 5.0); insert into rtest_comp values ('p4', 'cm', 15.0); insert into rtest_comp values ('p5', 'inch', 7.0); insert into rtest_comp values ('p6', 'inch', 4.4); select * from rtest_vcomp order by part; part | size_in_cm ------+------------ p1 | 500 p2 | 300 p3 | 5 p4 | 15 p5 | 17.78 p6 | 11.176 (6 rows) select * from rtest_vcomp where size_in_cm > 10.0 order by size_in_cm using >; part | size_in_cm ------+------------ p1 | 500 p2 | 300 p5 | 17.78 p4 | 15 p6 | 11.176 (5 rows) -- -- In addition run the (slightly modified) queries from the -- programmers manual section on the rule system. -- CREATE TABLE shoe_data ( shoename char(10), -- primary key sh_avail integer, -- available # of pairs slcolor char(10), -- preferred shoelace color slminlen float, -- miminum shoelace length slmaxlen float, -- maximum shoelace length slunit char(8) -- length unit ); CREATE TABLE shoelace_data ( sl_name char(10), -- primary key sl_avail integer, -- available # of pairs sl_color char(10), -- shoelace color sl_len float, -- shoelace length sl_unit char(8) -- length unit ); CREATE TABLE unit ( un_name char(8), -- the primary key un_fact float -- factor to transform to cm ); CREATE VIEW shoe AS SELECT sh.shoename, sh.sh_avail, sh.slcolor, sh.slminlen, sh.slminlen * un.un_fact AS slminlen_cm, sh.slmaxlen, sh.slmaxlen * un.un_fact AS slmaxlen_cm, sh.slunit FROM shoe_data sh, unit un WHERE sh.slunit = un.un_name; CREATE VIEW shoelace AS SELECT s.sl_name, s.sl_avail, s.sl_color, s.sl_len, s.sl_unit, s.sl_len * u.un_fact AS sl_len_cm FROM shoelace_data s, unit u WHERE s.sl_unit = u.un_name; CREATE VIEW shoe_ready AS SELECT rsh.shoename, rsh.sh_avail, rsl.sl_name, rsl.sl_avail, int4smaller(rsh.sh_avail, rsl.sl_avail) AS total_avail FROM shoe rsh, shoelace rsl WHERE rsl.sl_color = rsh.slcolor AND rsl.sl_len_cm >= rsh.slminlen_cm AND rsl.sl_len_cm <= rsh.slmaxlen_cm; INSERT INTO unit VALUES ('cm', 1.0); INSERT INTO unit VALUES ('m', 100.0); INSERT INTO unit VALUES ('inch', 2.54); INSERT INTO shoe_data VALUES ('sh1', 2, 'black', 70.0, 90.0, 'cm'); INSERT INTO shoe_data VALUES ('sh2', 0, 'black', 30.0, 40.0, 'inch'); INSERT INTO shoe_data VALUES ('sh3', 4, 'brown', 50.0, 65.0, 'cm'); INSERT INTO shoe_data VALUES ('sh4', 3, 'brown', 40.0, 50.0, 'inch'); INSERT INTO shoelace_data VALUES ('sl1', 5, 'black', 80.0, 'cm'); INSERT INTO shoelace_data VALUES ('sl2', 6, 'black', 100.0, 'cm'); INSERT INTO shoelace_data VALUES ('sl3', 0, 'black', 35.0 , 'inch'); INSERT INTO shoelace_data VALUES ('sl4', 8, 'black', 40.0 , 'inch'); INSERT INTO shoelace_data VALUES ('sl5', 4, 'brown', 1.0 , 'm'); INSERT INTO shoelace_data VALUES ('sl6', 0, 'brown', 0.9 , 'm'); INSERT INTO shoelace_data VALUES ('sl7', 7, 'brown', 60 , 'cm'); INSERT INTO shoelace_data VALUES ('sl8', 1, 'brown', 40 , 'inch'); -- SELECTs in doc SELECT * FROM shoelace ORDER BY sl_name; sl_name | sl_avail | sl_color | sl_len | sl_unit | sl_len_cm ------------+----------+------------+--------+----------+----------- sl1 | 5 | black | 80 | cm | 80 sl2 | 6 | black | 100 | cm | 100 sl3 | 0 | black | 35 | inch | 88.9 sl4 | 8 | black | 40 | inch | 101.6 sl5 | 4 | brown | 1 | m | 100 sl6 | 0 | brown | 0.9 | m | 90 sl7 | 7 | brown | 60 | cm | 60 sl8 | 1 | brown | 40 | inch | 101.6 (8 rows) SELECT * FROM shoe_ready WHERE total_avail >= 2; shoename | sh_avail | sl_name | sl_avail | total_avail ------------+----------+------------+----------+------------- sh1 | 2 | sl1 | 5 | 2 sh3 | 4 | sl7 | 7 | 4 (2 rows) CREATE TABLE shoelace_log ( sl_name char(10), -- shoelace changed sl_avail integer, -- new available value log_who name, -- who did it log_when datetime -- when ); -- Want "log_who" to be CURRENT_USER, -- but that is non-portable for the regression test -- - thomas 1999-02-21 CREATE RULE log_shoelace AS ON UPDATE TO shoelace_data WHERE NEW.sl_avail != OLD.sl_avail DO INSERT INTO shoelace_log VALUES ( NEW.sl_name, NEW.sl_avail, 'Al Bundy', 'epoch'::text ); UPDATE shoelace_data SET sl_avail = 6 WHERE sl_name = 'sl7'; SELECT * FROM shoelace_log; sl_name | sl_avail | log_who | log_when ------------+----------+----------+---------- sl7 | 6 | Al Bundy | epoch (1 row) CREATE RULE shoelace_ins AS ON INSERT TO shoelace DO INSTEAD INSERT INTO shoelace_data VALUES ( NEW.sl_name, NEW.sl_avail, NEW.sl_color, NEW.sl_len, NEW.sl_unit); CREATE RULE shoelace_upd AS ON UPDATE TO shoelace DO INSTEAD UPDATE shoelace_data SET sl_name = NEW.sl_name, sl_avail = NEW.sl_avail, sl_color = NEW.sl_color, sl_len = NEW.sl_len, sl_unit = NEW.sl_unit WHERE sl_name = OLD.sl_name; CREATE RULE shoelace_del AS ON DELETE TO shoelace DO INSTEAD DELETE FROM shoelace_data WHERE sl_name = OLD.sl_name; CREATE TABLE shoelace_arrive ( arr_name char(10), arr_quant integer ); CREATE TABLE shoelace_ok ( ok_name char(10), ok_quant integer ); CREATE RULE shoelace_ok_ins AS ON INSERT TO shoelace_ok DO INSTEAD UPDATE shoelace SET sl_avail = sl_avail + NEW.ok_quant WHERE sl_name = NEW.ok_name; INSERT INTO shoelace_arrive VALUES ('sl3', 10); INSERT INTO shoelace_arrive VALUES ('sl6', 20); INSERT INTO shoelace_arrive VALUES ('sl8', 20); SELECT * FROM shoelace ORDER BY sl_name; sl_name | sl_avail | sl_color | sl_len | sl_unit | sl_len_cm ------------+----------+------------+--------+----------+----------- sl1 | 5 | black | 80 | cm | 80 sl2 | 6 | black | 100 | cm | 100 sl3 | 0 | black | 35 | inch | 88.9 sl4 | 8 | black | 40 | inch | 101.6 sl5 | 4 | brown | 1 | m | 100 sl6 | 0 | brown | 0.9 | m | 90 sl7 | 6 | brown | 60 | cm | 60 sl8 | 1 | brown | 40 | inch | 101.6 (8 rows) insert into shoelace_ok select * from shoelace_arrive; FATAL 1: The system is shutting down pqReadData() -- backend closed the channel unexpectedly. This probably means the backend terminated abnormally before or while processing the request. connection to server was lost