标签：before sql now() pac its gui blank declare 批量
与Oracle不同。PostgreSQL须要手动控制分区规则触发器。
步骤一：创建分区
CREATE TABLE table_partition_1( CHECK partition_column criteria) INHENRITS (table)
ALTER TABLE ONLY table_partition_1 ADD CONSTRAINT table_partition_1_pkey PRIMARY KEY (key_column);
CREATE INDEX index_table_partition_1 ON table_partition_1 USING btree(column);
CREATE OR REPLACE FUNCTION before_insert_table() RETURNS trigger AS $BODY$ DECLARE BEGIN if criteria then EXECUTE 'insert into appropriate table ...' SELECT ($1).* ' USING NEW; end if; return null; END; $BODY$ LANGUAGE plpgsql VOLATILE COST 100; ALTER FUNCTION before_insert_table() OWNER TO db;
CREATE RULE table_partition_1 _insert AS
(criteria ...)
DO INSTEAD
INSERT INTO table_partition_1 VALUES (NEW.*)@SQLInsert(sql = "INSERT INTO " + "table(column,...)" + " VALUES(?,...)", check = ResultCheckStyle.NONE)
CREATE OR REPLACE FUNCTION "public"."function"()
RETURNS void AS $BODY$
DECLARE
_tablename text ;
quarter integer;
record1 record;
BEGIN
select function(now()) as quarter into record1;
quarter := record1.quarter;
_tablename := 'partition_name';
PERFORM 1
FROM pg_catalog.pg_class c
WHERE c.relname = _tablename;
IF FOUND <> TRUE THEN
EXECUTE 'CREATE TABLE ' || _tablename || ' (
CHECK ( criteria)
) INHERITS (table)';
EXECUTE 'ALTER TABLE ' || _tablename || ' OWNER TO db ';
EXECUTE ' alter table ' || _tablename || ' add CONSTRAINT ' || _tablename||'_pkey PRIMARY key (column) ' ;
EXECUTE ' CREATE INDEX ' || _tablename|| '_index
ON '|| _tablename ||'
USING btree
(column)';
END IF;
END
$BODY$
LANGUAGE 'plpgsql' VOLATILE COST 100;
ALTER FUNCTION "public"."function"() OWNER TO "db";PostgreSql Partition + Hibernate Insert
标签：before sql now() pac its gui blank declare 批量
原文地址：http://www.cnblogs.com/blfbuaa/p/7295758.html
