misc.source

关系型数据库 Postgresql 6.5.2

--
-- replace
--
--
-- BTREE
--
UPDATE onek
   SET unique1 = onek.unique1 + 1;

UPDATE onek
   SET unique1 = onek.unique1 - 1;

--
-- BTREE partial
--
-- UPDATE onek2
--   SET unique1 = onek2.unique1 + 1;

--UPDATE onek2 
--   SET unique1 = onek2.unique1 - 1;

--
-- BTREE shutting out non-functional updates
--
-- the following two tests seem to take a long time on some 
-- systems.    This non-func update stuff needs to be examined
-- more closely.  			- jolly (2/22/96)
-- 
UPDATE tmp
   SET stringu1 = reverse_name(onek.stringu1)
   WHERE onek.stringu1 = 'JBAAAA' and
	  onek.stringu1 = tmp.stringu1;

UPDATE tmp
   SET stringu1 = reverse_name(onek2.stringu1)
   WHERE onek2.stringu1 = 'JCAAAA' and
	  onek2.stringu1 = tmp.stringu1;

DROP TABLE tmp;

--UPDATE person*
--   SET age = age + 1;

--UPDATE person*
--   SET age = age + 3
--   WHERE name = 'linda';

--
-- copy
--
COPY onek TO '_OBJWD_/results/onek.data';

DELETE FROM onek;

COPY onek FROM '_OBJWD_/results/onek.data';

SELECT unique1 FROM onek WHERE unique1 < 2;

DELETE FROM onek2;

COPY onek2 FROM '_OBJWD_/results/onek.data';

SELECT unique1 FROM onek2 WHERE unique1 < 2;

COPY BINARY stud_emp TO '_OBJWD_/results/stud_emp.data';

DELETE FROM stud_emp;

COPY BINARY stud_emp FROM '_OBJWD_/results/stud_emp.data';

SELECT * FROM stud_emp;

-- COPY aggtest FROM stdin;
-- 56	7.8
-- 100	99.097
-- 0	0.09561
-- 42	324.78
-- .
-- COPY aggtest TO stdout;


--
-- inheritance stress test
--
SELECT * FROM a_star*;

SELECT * 
   FROM b_star* x
   WHERE x.b = 'bumble'::text or x.a < 3;

SELECT class, a 
   FROM c_star* x 
   WHERE x.c ~ 'hi'::text;

SELECT class, b, c
   FROM d_star* x
   WHERE x.a < 100;

SELECT class, c FROM e_star* x WHERE x.c NOTNULL;

SELECT * FROM f_star* x WHERE x.c ISNULL;

-- grouping and aggregation on inherited sets have been busted in the past...

SELECT sum(a) FROM a_star*;

SELECT class, sum(a) FROM a_star* GROUP BY class;


ALTER TABLE f_star RENAME COLUMN f TO ff;

ALTER TABLE e_star* RENAME COLUMN e TO ee;

ALTER TABLE d_star* RENAME COLUMN d TO dd;

ALTER TABLE c_star* RENAME COLUMN c TO cc;

ALTER TABLE b_star* RENAME COLUMN b TO bb;

ALTER TABLE a_star* RENAME COLUMN a TO aa;

SELECT class, aa
   FROM a_star* x
   WHERE aa ISNULL;

ALTER TABLE a_star RENAME COLUMN aa TO foo;

SELECT class, foo
   FROM a_star x
   WHERE x.foo >= 2;

ALTER TABLE a_star RENAME COLUMN foo TO aa;

SELECT * 
   from a_star*
   WHERE aa < 1000;

ALTER TABLE f_star ADD COLUMN f int4;

UPDATE f_star SET f = 10;

ALTER TABLE e_star* ADD COLUMN e int4;

--UPDATE e_star* SET e = 42;

SELECT * FROM e_star*;

ALTER TABLE a_star* ADD COLUMN a text;

--UPDATE b_star*
--   SET a = 'gazpacho'::text
--   WHERE aa > 4;

SELECT class, aa, a FROM a_star*;


--
-- versions
--

--
-- postquel functions
--
--
-- mike does post_hacking,
-- joe and sally play basketball, and
-- everyone else does nothing.
--
SELECT p.name, p.hobbies.name FROM person p;

--
-- as above, but jeff also does post_hacking.
--
SELECT p.name, p.hobbies.name FROM person* p;

--
-- the next two queries demonstrate how functions generate bogus duplicates.
-- this is a "feature" ..
--
SELECT DISTINCT hobbies_r.name, hobbies_r.equipment.name FROM hobbies_r;

SELECT hobbies_r.name, hobbies_r.equipment.name FROM hobbies_r;

--
-- mike needs advil and peet's coffee,
-- joe and sally need hightops, and
-- everyone else is fine.
--
SELECT p.name, p.hobbies.name, p.hobbies.equipment.name FROM person p;

--
-- as above, but jeff needs advil and peet's coffee as well.
--
SELECT p.name, p.hobbies.name, p.hobbies.equipment.name FROM person* p;

--
-- just like the last two, but make sure that the target list fixup and
-- unflattening is being done correctly.
--
SELECT p.hobbies.equipment.name, p.name, p.hobbies.name FROM person p;

SELECT p.hobbies.equipment.name, p.name, p.hobbies.name FROM person* p;

SELECT p.hobbies.equipment.name, p.hobbies.name, p.name FROM person p;

SELECT p.hobbies.equipment.name, p.hobbies.name, p.name FROM person* p;

SELECT user_relns() AS user_relns
   ORDER BY user_relns;

--SELECT name(equipment(hobby_construct('skywalking'::text, 'mer'::text))) AS equip_name;


--
-- functional joins
--

--
-- instance rules
--

--
-- rewrite rules
--