postgresql分区的一个例子

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CREATE TABLE cms.pmd_opts
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(
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  id integer NOT NULL DEFAULT nextval('master.fact_data_id_seq'::regclass),
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  created timestamp with time zone DEFAULT now(),
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  updated timestamp with time zone DEFAULT now(),
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  pmd_id integer NOT NULL,
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  lovd_id integer NOT NULL, -- Set default value
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  mt_attr_id integer NOT NULL,
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  lov_id integer,
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  mt_id integer NOT NULL,
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-- 省略contraint
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)

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CREATE OR REPLACE FUNCTION cms.fc_insert_pmd_opts(id integer, pmd_id integer, lovd_id integer, mt_attr_id integer, lov_id integer, mt_id integer)
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  RETURNS integer AS
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$BODY$DECLARE
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v_pmd_opt Integer;
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v_opt_scheme Varchar;
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v_opt_table Varchar;
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v_un Varchar;
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BEGIN
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SELECT se_name,tb_name,un INTO v_opt_scheme,v_opt_table,v_un FROM v_mt_attr va WHERE va.id=mt_attr_id;
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IF NOT FOUND THEN
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    RAISE EXCEPTION 'Category Not Found';
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END IF;
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EXECUTE 'insert into '||v_opt_scheme||'.'||v_opt_table||'_'||v_un||'  (id,pmd_id,lovd_id,mt_attr_id,lov_id,mt_id) values '||
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 '('||id||','||pmd_id||','||lovd_id||','||mt_attr_id||','||lov_id||','||mt_id||') returning '
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 ||v_opt_table||'_'||v_un||'.id' into v_pmd_opt;
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  --||v_opt_table||'_'||v_un||'.*' into v_pmd_opt;
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 return v_pmd_opt;
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END;$BODY$
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  LANGUAGE plpgsql VOLATILE
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  COST 100;

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CREATE OR REPLACE RULE ri_insert_pmd_opts AS
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    ON INSERT TO cms.pmd_opts DO INSTEAD  SELECT cms.fc_insert_pmd_opts(new.id, new.pmd_id, new.lovd_id, new.mt_attr_id, new.lov_id, new.mt_id) AS id;