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1.普通方式建立主表
create
table
tbl_partition(
id
integer
,
name
varchar
(
20
),
gender boolean,
join_date date,
dept
char
(
4
)
)
2.創(chuàng)建分區(qū)表.(注意加上約束和繼承)
create
table
tbl_partition_201211(
check
( join_date
>=
DATE
'
2012-11-01
'
and
join_date
<
DATE
'
2012-12-01
'
)
)inherits(tbl_partition);
create
table
tbl_partition_201212 (
check
( join_date
>=
DATE
'
2012-12-01
'
AND
join_date
<
DATE
'
2013-01-01
'
)
) INHERITS (tbl_partition);
create
table
tbl_partition_201301 (
check
( join_date
>=
DATE
'
2013-01-01
'
AND
join_date
<
DATE
'
2013-02-01
'
)
) INHERITS (tbl_partition);
create
table
tbl_partition_201302 (
check
( join_date
>=
DATE
'
2013-02-01
'
AND
join_date
<
DATE
'
2013-03-01
'
)
) INHERITS (tbl_partition);
create
table
tbl_partition_201303 (
check
( join_date
>=
DATE
'
2013-03-01
'
AND
join_date
<
DATE
'
2013-04-01
'
)
) INHERITS (tbl_partition);
create
table
tbl_partition_201304 (
check
( join_date
>=
DATE
'
2013-04-01
'
AND
join_date
<
DATE
'
2013-05-01
'
)
) INHERITS (tbl_partition);
create
table
tbl_partition_201305 (
check
( join_date
>=
DATE
'
2013-05-01
'
AND
join_date
<
DATE
'
2013-06-01
'
)
) INHERITS (tbl_partition);
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3.分區(qū)表上建立索引.
create
index
tbl_partition_201211_joindate
on
tbl_partition_201211 (join_date);
create
index
tbl_partition_201212_joindate
on
tbl_partition_201212 (join_date);
create
index
tbl_partition_201301_joindate
on
tbl_partition_201301 (join_date);
create
index
tbl_partition_201302_joindate
on
tbl_partition_201302 (join_date);
create
index
tbl_partition_201303_joindate
on
tbl_partition_201303 (join_date);
create
index
tbl_partition_201304_joindate
on
tbl_partition_201304 (join_date);
create
index
tbl_partition_201305_joindate
on
tbl_partition_201305 (join_date);
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4.postgresql不能自動(dòng)插入到字表.所以
要?jiǎng)?chuàng)建觸發(fā)器 函數(shù) 和創(chuàng)建觸發(fā)器.這樣對(duì)外插入就不會(huì)有字表的感覺(jué).
觸發(fā)器函數(shù):
CREATE
OR
REPLACE
FUNCTION
tbl_partition_insert_trigger()
RETURNS
TRIGGER
AS
$$
BEGIN
IF
( NEW.join_date
>=
DATE
'
2012-11-01
'
AND
NEW.join_date
<
DATE
'
2012-12-01
'
)
THEN
INSERT
INTO
tbl_partition_201211
VALUES
(NEW.
*
);
ELSIF ( NEW.join_date
>=
DATE
'
2012-12-01
'
AND
NEW.join_date
<
DATE
'
2013-01-01
'
)
THEN
INSERT
INTO
tbl_partition_201212
VALUES
(NEW.
*
);
ELSIF ( NEW.join_date
>=
DATE
'
2013-01-01
'
AND
NEW.join_date
<
DATE
'
2013-02-01
'
)
THEN
INSERT
INTO
tbl_partition_201301
VALUES
(NEW.
*
);
ELSIF ( NEW.join_date
>=
DATE
'
2013-02-01
'
AND
NEW.join_date
<
DATE
'
2013-03-01
'
)
THEN
INSERT
INTO
tbl_partition_201302
VALUES
(NEW.
*
);
ELSIF ( NEW.join_date
>=
DATE
'
2013-03-01
'
AND
NEW.join_date
<
DATE
'
2013-04-01
'
)
THEN
INSERT
INTO
tbl_partition_201303
VALUES
(NEW.
*
);
ELSIF ( NEW.join_date
>=
DATE
'
2013-04-01
'
AND
NEW.join_date
<
DATE
'
2013-05-01
'
)
THEN
INSERT
INTO
tbl_partition_201304
VALUES
(NEW.
*
);
ELSIF ( NEW.join_date
>=
DATE
'
2013-05-01
'
AND
NEW.join_date
<
DATE
'
2013-06-01
'
)
THEN
INSERT
INTO
tbl_partition_201305
VALUES
(NEW.
*
);
ELSE
RAISE EXCEPTION
'
Date out of range. Fix the tbl_partition_insert_trigger() function!
'
;
END
IF
;
RETURN
NULL
;
END
;
$$
LANGUAGE plpgsql;
觸發(fā)器:
CREATE
TRIGGER
insert_tbl_partition_traigger
BEFORE
INSERT
ON
tbl_partition
For
EACH ROW
EXECUTE
PROCEDURE
tbl_partition_insert_trigger();
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5.插入數(shù)據(jù)進(jìn)行測(cè)試.
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insert
into
tbl_partition
values
(
1
,
'
David
'
,
'
1
'
,
'
2013-01-10
'
,
'
TS
'
);
insert
into
tbl_partition
values
(
2
,
'
Sandy
'
,
'
0
'
,
'
2013-02-10
'
,
'
TS
'
);
insert
into
tbl_partition
values
(
3
,
'
Eagle
'
,
'
1
'
,
'
2012-11-01
'
,
'
TS
'
);
insert
into
tbl_partition
values
(
4
,
'
Miles
'
,
'
1
'
,
'
2012-12-15
'
,
'
SD
'
);
insert
into
tbl_partition
values
(
5
,
'
Simon
'
,
'
1
'
,
'
2012-12-10
'
,
'
SD
'
);
insert
into
tbl_partition
values
(
6
,
'
Rock
'
,
'
1
'
,
'
2012-11-10
'
,
'
SD
'
);
insert
into
tbl_partition
values
(
7
,
'
Peter
'
,
'
1
'
,
'
2013-01-11
'
,
'
SD
'
);
insert
into
tbl_partition
values
(
8
,
'
Sally
'
,
'
0
'
,
'
2013-03-10
'
,
'
BCSC
'
);
insert
into
tbl_partition
values
(
9
,
'
Carrie
'
,
'
0
'
,
'
2013-04-02
'
,
'
BCSC
'
);
insert
into
tbl_partition
values
(
10
,
'
Lee
'
,
'
1
'
,
'
2013-01-05
'
,
'
BMC
'
);
insert
into
tbl_partition
values
(
11
,
'
Nicole
'
,
'
0
'
,
'
2012-11-10
'
,
'
PROJ
'
);
insert
into
tbl_partition
values
(
12
,
'
Renee
'
,
'
0
'
,
'
2013-01-10
'
,
'
TS
'
);
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另: 解除分區(qū)方法:
alter
table
tbl_partition_201304 no inherit tbl_partition;
增加分區(qū):
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參考:
PostgreSQL官方說(shuō)明： http://www.postgresql.org/docs/9.2/static/ddl-partitioning.html
ITEYE： http://diegoball.iteye.com/blog/713826
kenyon(君羊)： http://my.oschina.net/Kenyon/blog/59455
博客園: http://www.cnblogs.com/mchina/archive/2013/04/09/2973427.html
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