temp.sql

来自「PostgreSQL 8.1.4的源码 适用于Linux下的开源数据库系统」· SQL 代码 · 共 102 行

--
-- TEMP
-- Test temp relations and indexes
--

-- test temp table/index masking

CREATE TABLE temptest(col int);

CREATE INDEX i_temptest ON temptest(col);

CREATE TEMP TABLE temptest(tcol int);

CREATE INDEX i_temptest ON temptest(tcol);

SELECT * FROM temptest;

DROP INDEX i_temptest;

DROP TABLE temptest;

SELECT * FROM temptest;

DROP INDEX i_temptest;

DROP TABLE temptest;

-- test temp table selects

CREATE TABLE temptest(col int);

INSERT INTO temptest VALUES (1);

CREATE TEMP TABLE temptest(tcol float);

INSERT INTO temptest VALUES (2.1);

SELECT * FROM temptest;

DROP TABLE temptest;

SELECT * FROM temptest;

DROP TABLE temptest;

-- test temp table deletion

CREATE TEMP TABLE temptest(col int);

\c regression

SELECT * FROM temptest;

-- Test ON COMMIT DELETE ROWS

CREATE TEMP TABLE temptest(col int) ON COMMIT DELETE ROWS;

BEGIN;
INSERT INTO temptest VALUES (1);
INSERT INTO temptest VALUES (2);

SELECT * FROM temptest;
COMMIT;

SELECT * FROM temptest;

DROP TABLE temptest;

-- Test ON COMMIT DROP

BEGIN;

CREATE TEMP TABLE temptest(col int) ON COMMIT DROP;

INSERT INTO temptest VALUES (1);
INSERT INTO temptest VALUES (2);

SELECT * FROM temptest;
COMMIT;

SELECT * FROM temptest;

-- ON COMMIT is only allowed for TEMP

CREATE TABLE temptest(col int) ON COMMIT DELETE ROWS;

-- Test foreign keys
BEGIN;
CREATE TEMP TABLE temptest1(col int PRIMARY KEY);
CREATE TEMP TABLE temptest2(col int REFERENCES temptest1)
  ON COMMIT DELETE ROWS;
INSERT INTO temptest1 VALUES (1);
INSERT INTO temptest2 VALUES (1);
COMMIT;
SELECT * FROM temptest1;
SELECT * FROM temptest2;

BEGIN;
CREATE TEMP TABLE temptest3(col int PRIMARY KEY) ON COMMIT DELETE ROWS;
CREATE TEMP TABLE temptest4(col int REFERENCES temptest3);
COMMIT;