18 lines
478 B
Plaintext
18 lines
478 B
Plaintext
--
|
|
-- CREATE_VIEW
|
|
-- Virtual class definitions
|
|
-- (this also tests the query rewrite system)
|
|
--
|
|
CREATE VIEW street AS
|
|
SELECT r.name, r.thepath, c.cname AS cname
|
|
FROM ONLY road r, real_city c
|
|
WHERE c.outline ## r.thepath;
|
|
CREATE VIEW iexit AS
|
|
SELECT ih.name, ih.thepath,
|
|
interpt_pp(ih.thepath, r.thepath) AS exit
|
|
FROM ihighway ih, ramp r
|
|
WHERE ih.thepath ## r.thepath;
|
|
CREATE VIEW toyemp AS
|
|
SELECT name, age, location, 12*salary AS annualsal
|
|
FROM emp;
|