--我是7天一分区
SELECT create_hypertable('表名_cs', 'alarm_time', chunk_time_interval => INTERVAL '7 day');
-- 加个索引
CREATE INDEX "表名_cs_create_time_idx" ON "hrmw"."表名_cs" USING btree (
 "create_time" "code"."列名" DESC NULLS FIRST
);

INSERT into 表名_cs SELECT * from 表名;

INSERT into 表名_cs SELECT * from 表名 where alarm_time >= '2020-9-1';
INSERT into 表名_cs SELECT * from 表名 where alarm_time >= '2020-10-1' and alarm_time < '2020-11-1'  ;

CREATE 
	OR REPLACE PROCEDURE "hrmw"."sp_into_表名_pt" ( ) AS $BODY$ BEGIN
	-- 一般按照表名来建函数
	DECLARE --我声明的变量有点多 按实际的来
		target_text TEXT;
	sqltext TEXT;
	sqltext1 TEXT;
	sqltext2 TEXT;
	rd record;
	nloop INT;
	isexist TEXT;
	datestr TEXT;
	begindate TEXT;
	n INT;
	BEGIN
			--查询最早一天的时间
			sqltext := 'select to_char(min(alarm_time),''yyyy-mm-dd'') datestr from tb_hrmw_moni_target';    
		EXECUTE sqltext INTO begindate;
		n := date_part( 'day', now( ) - begindate :: DATE );
--enddate:=(to_char(now(),'yyyy-mm-dd'))::text;
		FOR nloop IN 0..n
		LOOP
		datestr := ( begindate :: DATE + nloop ) :: TEXT;
		sqltext2 := '
		insert into 表名_cs 
		select
		列名1,
		code,
		列名2,
		alarm_time,
		列名3,
		列名4
		from 表名
		where alarm_time >= ''' || datestr || ' 00:00:00''
		and alarm_time <= ''' || datestr || ' 23:59:59''
		'; 
		EXECUTE sqltext2;
		COMMIT;
		
	END loop;
RETURN;

END;

END $BODY$ LANGUAGE plpgsql