ʻŌlelo mua a pehea i puka mai ai ka manaʻo o ka ʻāpana
Hoʻomaka ka moʻolelo ma ʻaneʻi: Ma hope o ka pau ʻana o nā kumuwaiwai no ka hoʻonui ʻana i ka noi, i kēlā manawa, ua pau ka nīnau - he aha ka mea aʻe? ʻO kēia ke ʻano o ka manaʻo o ka hoʻokaʻawale ʻana.
Hoʻokaʻawale mele:
Pono 'i kēlā manawa', no ka mea ... Mahalo a me Habru!
No laila, pehea e hiki ai iā ʻoe ke hauʻoli i ka mea kūʻai aku, a i ka manawa like e hoʻomaikaʻi ai i kāu mau akamai?
E maʻalahi i nā mea a pau e like me ka hiki, a laila ʻelua mau ala e hoʻomaikaʻi nui ai i kekahi mea i ka hana o ka waihona:
1) Alanui nui - hoʻonui mākou i nā kumuwaiwai, hoʻololi i ka hoʻonohonoho;
2) Ala koʻikoʻi - ka huli ʻana i nā nīnau
No ka mea, ke haʻi hou aku nei au, i kēlā manawa ʻaʻole maopopo hou ka mea e hoʻololi ai i ka noi e wikiwiki, ua koho ʻia ke ala - hoʻololi hoʻolālā papaʻaina.
No laila, kū mai ka nīnau nui: pehea a pehea mākou e hoʻololi ai?
Nā kūlana mua
ʻO ka mea mua, aia kēia ERD (hōʻike ʻia ma ke ʻano maʻalahi maʻalahi):
Nā Kiʻi Nui:
- pili nui-a-nui
- ua loaʻa i ka papaʻaina kahi kī pākuʻi
Noi kumu:
SELECT
p."PARAMETER_ID" as parameter_id,
pc."PC_NAME" AS pc_name,
pc."CUSTOMER_PARTNUMBER" AS customer_partnumber,
w."LASERMARK" AS lasermark,
w."LOTID" AS lotid,
w."REPORTED_VALUE" AS reported_value,
w."LOWER_SPEC_LIMIT" AS lower_spec_limit,
w."UPPER_SPEC_LIMIT" AS upper_spec_limit,
p."TYPE_CALCUL" AS type_calcul,
s."SHIPMENT_NAME" AS shipment_name,
s."SHIPMENT_DATE" AS shipment_date,
extract(year from s."SHIPMENT_DATE") AS year,
extract(month from s."SHIPMENT_DATE") as month,
s."REPORT_NAME" AS report_name,
p."SPARAM_NAME" AS SPARAM_name,
p."CUSTOMERPARAM_NAME" AS customerparam_name
FROM data w INNER JOIN shipment s ON s."SHIPMENT_ID" = w."SHIPMENT_ID"
INNER JOIN parameters p ON p."PARAMETER_ID" = w."PARAMETER_ID"
INNER JOIN shipment_pc sp ON s."SHIPMENT_ID" = sp."SHIPMENT_ID"
INNER JOIN pc pc ON pc."PC_ID" = sp."PC_ID"
INNER JOIN ( SELECT w2."LASERMARK" , MAX(s2."SHIPMENT_DATE") AS "SHIPMENT_DATE"
FROM shipment s2 INNER JOIN data w2 ON s2."SHIPMENT_ID" = w2."SHIPMENT_ID"
GROUP BY w2."LASERMARK"
) md ON md."SHIPMENT_DATE" = s."SHIPMENT_DATE" AND md."LASERMARK" = w."LASERMARK"
WHERE
s."SHIPMENT_DATE" >= '2018-07-01' AND s."SHIPMENT_DATE" <= '2018-09-30' ;
Nā hopena o ka hoʻokō ʻana ma ka waihona hoʻāʻo:
kāki : 502 997.55
Ka manawa hoʻokō: 505 kekona.
He aha kā mākou e ʻike nei? He noi maʻamau, e pili ana i kahi ʻāpana manawa.
E hana kākou i ka manaʻo noʻonoʻo maʻalahi: inā he laʻana o kahi ʻāpana manawa, e kōkua anei ia iā mākou? Pololei - ʻokiʻoki.
He aha ka ʻāpana?
I ka nānā mua ʻana, ʻike ʻia ka koho - ka wehewehe wehewehe ʻana o ka papaʻaina "hoʻouna" me ke kī "SHIPMENT_DATE" (lele loa i mua - i ka hopena ua hewa iki i ka hana).
Pehea e mahele ai?
ʻAʻole paʻakikī loa kēia nīnau. ʻO ka mea pōmaikaʻi, ma PostgreSQL 10, aia i kēia manawa kahi hana hoʻokaʻawale kanaka.
No laila:
- E mālama i kahi hoʻolei o ka papa kumu - pg_dump source_table
- Holoi i ka papa ʻaina kumu - hoʻokuʻu i ka pākaukau source_table
- E hana i papaʻaina makua me ka hoʻokaʻawale ʻana - hoʻokumu i ka papa ʻaina source_table
- Hana i nā ʻāpana - hoʻokumu i ka papa ʻaina kumu_table, hana i ka index
- Hoʻokomo i ka pahu i hana ʻia ma ka ʻanuʻu 1 - pg_hoʻihoʻi
Nā palapala no ka māhele ʻana
No ka maʻalahi a me ka maʻalahi, ua hoʻohui ʻia nā ʻanuʻu 2,3,4 i hoʻokahi palapala.
No laila:
E mālama i kahi hoʻolei o ka papa kumu
pg_dump postgres --file=/dump/shipment.dmp --format=c --table=shipment --verbose > /dump/shipment.log 2>&1Holoi i ka papa kumu + E hana i ka papa makua me ka hoʻokaʻawale ʻana + E hana i nā ʻāpana
--create_partition_shipment.sql
do language plpgsql $$
declare
rec_shipment_date RECORD ;
partition_name varchar;
index_name varchar;
current_year varchar ;
current_month varchar ;
begin_year varchar ;
begin_month varchar ;
next_year varchar ;
next_month varchar ;
first_flag boolean ;
i integer ;
begin
RAISE NOTICE 'CREATE TEMPORARY TABLE FOR SHIPMENT_DATE';
CREATE TEMP TABLE tmp_shipment_date as select distinct "SHIPMENT_DATE" from shipment order by "SHIPMENT_DATE" ;
RAISE NOTICE 'DROP TABLE shipment';
drop table shipment cascade ;
CREATE TABLE public.shipment
(
"SHIPMENT_ID" integer NOT NULL DEFAULT nextval('shipment_shipment_id_seq'::regclass),
"SHIPMENT_NAME" character varying(30) COLLATE pg_catalog."default",
"SHIPMENT_DATE" timestamp without time zone,
"REPORT_NAME" character varying(40) COLLATE pg_catalog."default"
)
PARTITION BY RANGE ("SHIPMENT_DATE")
WITH (
OIDS = FALSE
)
TABLESPACE pg_default;
RAISE NOTICE 'CREATE PARTITIONS FOR TABLE shipment';
current_year:='0';
current_month:='0';
begin_year := '0' ;
begin_month := '0' ;
next_year := '0' ;
next_month := '0' ;
FOR rec_shipment_date IN SELECT * FROM tmp_shipment_date LOOP
RAISE NOTICE 'SHIPMENT_DATE=%',rec_shipment_date."SHIPMENT_DATE";
current_year := date_part('year' ,rec_shipment_date."SHIPMENT_DATE");
current_month := date_part('month' ,rec_shipment_date."SHIPMENT_DATE") ;
IF to_number(current_month,'99') < 10 THEN
current_month := '0'||current_month ;
END IF ;
--Init borders
IF begin_year = '0' THEN
first_flag := true ; --first time flag
begin_year := current_year ;
begin_month := current_month ;
IF current_month = '12' THEN
next_year := date_part('year' ,rec_shipment_date."SHIPMENT_DATE" + interval '1 year') ;
ELSE
next_year := current_year ;
END IF;
next_month := date_part('month' ,rec_shipment_date."SHIPMENT_DATE" + interval '1 month') ;
END IF;
-- Check current date into borders NOT for First time
IF to_date( current_year||'.'||current_month, 'YYYY.MM') >= to_date( begin_year||'.'||begin_month, 'YYYY.MM') AND
to_date( current_year||'.'||current_month, 'YYYY.MM') < to_date( next_year||'.'||next_month, 'YYYY.MM') AND
NOT first_flag
THEN
CONTINUE ;
ELSE
--NEW borders only for second and after time
begin_year := current_year ;
begin_month := current_month ;
IF current_month = '12' THEN
next_year := date_part('year' ,rec_shipment_date."SHIPMENT_DATE" + interval '1 year') ;
ELSE
next_year := current_year ;
END IF;
next_month := date_part('month' ,rec_shipment_date."SHIPMENT_DATE" + interval '1 month') ;
END IF;
partition_name := 'shipment_shipment_date_'||begin_year||'-'||begin_month||'-01-'|| next_year||'-'||next_month||'-01' ;
EXECUTE format('CREATE TABLE ' || quote_ident(partition_name) || ' PARTITION OF shipment FOR VALUES FROM ( %L ) TO ( %L ) ' , current_year||'-'||current_month||'-01' , next_year||'-'||next_month||'-01' ) ;
index_name := partition_name||'_shipment_id_idx';
RAISE NOTICE 'INDEX NAME =%',index_name;
EXECUTE format('CREATE INDEX ' || quote_ident(index_name) || ' ON '|| quote_ident(partition_name) ||' USING btree ("SHIPMENT_ID") TABLESPACE pg_default ' ) ;
--Drop first time flag
first_flag := false ;
END LOOP;
end
$$;Ke lawe mai nei i ka hoolei
pg_restore -d postgres --data-only --format=c --table=shipment --verbose shipment.dmp > /tmp/data_dump/shipment_restore.log 2>&1Ke nānā nei i nā hopena hoʻokaʻawale
He aha kā mākou hopena? ʻO ka kikokikona holoʻokoʻa o ka hoʻolālā hoʻokō he nui a ʻoluʻolu, no laila hiki iā ʻoe ke kaupalena iā ʻoe iho i nā helu hope.
Kau
kāki: 502 997.55
Ka manawa hoʻokō: 505 kekona.
Ua lilo
kāki: 77 872.36
Ka manawa hoʻokō: 79 kekona.
He hopena maikaʻi loa. Hoʻemi ʻia ke kumukūʻai a me ka manawa hoʻokō. No laila, ʻo ka hoʻohana ʻana i ka partitioning e hāʻawi i ka hopena i manaʻo ʻia a, ma ka laulā, ʻaʻohe mea kupanaha.
E hauʻoli i ka mea kūʻai
Ua hōʻike ʻia nā hopena hōʻike i ka mea kūʻai aku no ka loiloi. A ma hope o ka nānā ʻana, ua hāʻawi ʻia iā lākou kahi ʻōlelo hoʻoholo i manaʻo ʻole ʻia: "Maikaʻi, e hoʻokaʻawale i ka papa ʻikepili".
ʻAe, akā ua nānā mākou i kahi papaʻaina "hoʻouna" ʻokoʻa loa; ʻaʻole i loaʻa i ka papa "ʻikepili" ke kahua "SHIPMENT_DATE".
ʻAʻohe pilikia, hoʻohui, hoʻololi. ʻO ka mea nui, ʻoluʻolu ka mea kūʻai aku i ka hopena; ʻaʻole koʻikoʻi nā kikoʻī hoʻokō.
ʻO ka hoʻokaʻawale ʻana i ka papa nui "ʻikepili"
Ma keʻano laulā, ʻaʻohe pilikia i kū mai. ʻOiai, ua loli iki ka algorithm partitioning.
Hoʻohui i ke kolamu "SHIPMENT_DATA" i ka papa "ʻikepili".
psql -h хост -U база -d юзер
=> ALTER TABLE data ADD COLUMN "SHIPMENT_DATE" timestamp without time zone ;E hoʻopiha i nā waiwai o ke kolamu "SHIPMENT_DATA" i ka papa "data" me nā waiwai o ke kolamu o ka inoa like mai ka papa "hoʻouna"
-----------------------------
--update_data.sql
--updating for altered table "data" to values of "shipment_data" from the table "shipment"
--version 1.0
do language plpgsql $$
declare
rec_shipment_data RECORD ;
shipment_date timestamp without time zone ;
row_count integer ;
total_rows integer ;
begin
select count(*) into total_rows from shipment ;
RAISE NOTICE 'Total %',total_rows;
row_count:= 0 ;
FOR rec_shipment_data IN SELECT * FROM shipment LOOP
update data set "SHIPMENT_DATE" = rec_shipment_data."SHIPMENT_DATE" where "SHIPMENT_ID" = rec_shipment_data."SHIPMENT_ID";
row_count:= row_count +1 ;
RAISE NOTICE 'row count = % , from %',row_count,total_rows;
END LOOP;
end
$$;E mālama i kahi hoʻolei o ka papa "ʻikepili".
pg_dump postgres --file=/dump/data.dmp --format=c --table=data --verbose > /dump/data.log 2>&1</sourceE hana hou i ka papaʻaina "ʻikepili"
--create_partition_data.sql
--create partitions for the table "wafer data" by range column "shipment_data" with one month duration
--version 1.0
do language plpgsql $$
declare
rec_shipment_date RECORD ;
partition_name varchar;
index_name varchar;
current_year varchar ;
current_month varchar ;
begin_year varchar ;
begin_month varchar ;
next_year varchar ;
next_month varchar ;
first_flag boolean ;
i integer ;
begin
RAISE NOTICE 'CREATE TEMPORARY TABLE FOR SHIPMENT_DATE';
CREATE TEMP TABLE tmp_shipment_date as select distinct "SHIPMENT_DATE" from shipment order by "SHIPMENT_DATE" ;
RAISE NOTICE 'DROP TABLE data';
drop table data cascade ;
RAISE NOTICE 'CREATE PARTITIONED TABLE data';
CREATE TABLE public.data
(
"RUN_ID" integer,
"LASERMARK" character varying(20) COLLATE pg_catalog."default" NOT NULL,
"LOTID" character varying(80) COLLATE pg_catalog."default",
"SHIPMENT_ID" integer NOT NULL,
"PARAMETER_ID" integer NOT NULL,
"INTERNAL_VALUE" character varying(75) COLLATE pg_catalog."default",
"REPORTED_VALUE" character varying(75) COLLATE pg_catalog."default",
"LOWER_SPEC_LIMIT" numeric,
"UPPER_SPEC_LIMIT" numeric ,
"SHIPMENT_DATE" timestamp without time zone
)
PARTITION BY RANGE ("SHIPMENT_DATE")
WITH (
OIDS = FALSE
)
TABLESPACE pg_default ;
RAISE NOTICE 'CREATE PARTITIONS FOR TABLE data';
current_year:='0';
current_month:='0';
begin_year := '0' ;
begin_month := '0' ;
next_year := '0' ;
next_month := '0' ;
i := 1;
FOR rec_shipment_date IN SELECT * FROM tmp_shipment_date LOOP
RAISE NOTICE 'SHIPMENT_DATE=%',rec_shipment_date."SHIPMENT_DATE";
current_year := date_part('year' ,rec_shipment_date."SHIPMENT_DATE");
current_month := date_part('month' ,rec_shipment_date."SHIPMENT_DATE") ;
--Init borders
IF begin_year = '0' THEN
RAISE NOTICE '***Init borders';
first_flag := true ; --first time flag
begin_year := current_year ;
begin_month := current_month ;
IF current_month = '12' THEN
next_year := date_part('year' ,rec_shipment_date."SHIPMENT_DATE" + interval '1 year') ;
ELSE
next_year := current_year ;
END IF;
next_month := date_part('month' ,rec_shipment_date."SHIPMENT_DATE" + interval '1 month') ;
END IF;
-- RAISE NOTICE 'current_year=% , current_month=% ',current_year,current_month;
-- RAISE NOTICE 'begin_year=% , begin_month=% ',begin_year,begin_month;
-- RAISE NOTICE 'next_year=% , next_month=% ',next_year,next_month;
-- Check current date into borders NOT for First time
RAISE NOTICE 'Current data = %',to_char( to_date( current_year||'.'||current_month, 'YYYY.MM'), 'YYYY.MM');
RAISE NOTICE 'Begin data = %',to_char( to_date( begin_year||'.'||begin_month, 'YYYY.MM'), 'YYYY.MM');
RAISE NOTICE 'Next data = %',to_char( to_date( next_year||'.'||next_month, 'YYYY.MM'), 'YYYY.MM');
IF to_date( current_year||'.'||current_month, 'YYYY.MM') >= to_date( begin_year||'.'||begin_month, 'YYYY.MM') AND
to_date( current_year||'.'||current_month, 'YYYY.MM') < to_date( next_year||'.'||next_month, 'YYYY.MM') AND
NOT first_flag
THEN
RAISE NOTICE '***CONTINUE';
CONTINUE ;
ELSE
--NEW borders only for second and after time
RAISE NOTICE '***NEW BORDERS';
begin_year := current_year ;
begin_month := current_month ;
IF current_month = '12' THEN
next_year := date_part('year' ,rec_shipment_date."SHIPMENT_DATE" + interval '1 year') ;
ELSE
next_year := current_year ;
END IF;
next_month := date_part('month' ,rec_shipment_date."SHIPMENT_DATE" + interval '1 month') ;
END IF;
IF to_number(current_month,'99') < 10 THEN
current_month := '0'||current_month ;
END IF ;
IF to_number(begin_month,'99') < 10 THEN
begin_month := '0'||begin_month ;
END IF ;
IF to_number(next_month,'99') < 10 THEN
next_month := '0'||next_month ;
END IF ;
RAISE NOTICE 'current_year=% , current_month=% ',current_year,current_month;
RAISE NOTICE 'begin_year=% , begin_month=% ',begin_year,begin_month;
RAISE NOTICE 'next_year=% , next_month=% ',next_year,next_month;
partition_name := 'data_'||begin_year||begin_month||'01_'||next_year||next_month||'01' ;
RAISE NOTICE 'PARTITION NUMBER % , TABLE NAME =%',i , partition_name;
EXECUTE format('CREATE TABLE ' || quote_ident(partition_name) || ' PARTITION OF data FOR VALUES FROM ( %L ) TO ( %L ) ' , begin_year||'-'||begin_month||'-01' , next_year||'-'||next_month||'-01' ) ;
index_name := partition_name||'_shipment_id_parameter_id_idx';
RAISE NOTICE 'INDEX NAME =%',index_name;
EXECUTE format('CREATE INDEX ' || quote_ident(index_name) || ' ON '|| quote_ident(partition_name) ||' USING btree ("SHIPMENT_ID", "PARAMETER_ID") TABLESPACE pg_default ' ) ;
index_name := partition_name||'_lasermark_idx';
RAISE NOTICE 'INDEX NAME =%',index_name;
EXECUTE format('CREATE INDEX ' || quote_ident(index_name) || ' ON '|| quote_ident(partition_name) ||' USING btree ("LASERMARK" COLLATE pg_catalog."default") TABLESPACE pg_default ' ) ;
index_name := partition_name||'_shipment_id_idx';
RAISE NOTICE 'INDEX NAME =%',index_name;
EXECUTE format('CREATE INDEX ' || quote_ident(index_name) || ' ON '|| quote_ident(partition_name) ||' USING btree ("SHIPMENT_ID") TABLESPACE pg_default ' ) ;
index_name := partition_name||'_parameter_id_idx';
RAISE NOTICE 'INDEX NAME =%',index_name;
EXECUTE format('CREATE INDEX ' || quote_ident(index_name) || ' ON '|| quote_ident(partition_name) ||' USING btree ("PARAMETER_ID") TABLESPACE pg_default ' ) ;
index_name := partition_name||'_shipment_date_idx';
RAISE NOTICE 'INDEX NAME =%',index_name;
EXECUTE format('CREATE INDEX ' || quote_ident(index_name) || ' ON '|| quote_ident(partition_name) ||' USING btree ("SHIPMENT_DATE") TABLESPACE pg_default ' ) ;
--Drop first time flag
first_flag := false ;
END LOOP;
end
$$;
E hoʻouka i ka dump i hana ʻia ma ka ʻanuʻu 3.
pg_restore -h хост -юзер -d база --data-only --format=c --table=data --verbose data.dmp > data_restore.log 2>&1E hana i ʻāpana ʻokoʻa no ka ʻikepili kahiko
---------------------------------------------------
--create_partition_for_old_dates.sql
--create partitions for keeping old dates
--version 1.0
do language plpgsql $$
declare
rec_shipment_date RECORD ;
partition_name varchar;
index_name varchar;
begin
SELECT min("SHIPMENT_DATE") AS min_date INTO rec_shipment_date from data ;
RAISE NOTICE 'Old date is %',rec_shipment_date.min_date ;
partition_name := 'data_old_dates' ;
RAISE NOTICE 'PARTITION NAME IS %',partition_name;
EXECUTE format('CREATE TABLE ' || quote_ident(partition_name) || ' PARTITION OF data FOR VALUES FROM ( %L ) TO ( %L ) ' , '1900-01-01' ,
to_char( rec_shipment_date.min_date,'YYYY')||'-'||to_char(rec_shipment_date.min_date,'MM')||'-01' ) ;
index_name := partition_name||'_shipment_id_parameter_id_idx';
EXECUTE format('CREATE INDEX ' || quote_ident(index_name) || ' ON '|| quote_ident(partition_name) ||' USING btree ("SHIPMENT_ID", "PARAMETER_ID") TABLESPACE pg_default ' ) ;
index_name := partition_name||'_lasermark_idx';
EXECUTE format('CREATE INDEX ' || quote_ident(index_name) || ' ON '|| quote_ident(partition_name) ||' USING btree ("LASERMARK" COLLATE pg_catalog."default") TABLESPACE pg_default ' ) ;
index_name := partition_name||'_shipment_id_idx';
EXECUTE format('CREATE INDEX ' || quote_ident(index_name) || ' ON '|| quote_ident(partition_name) ||' USING btree ("SHIPMENT_ID") TABLESPACE pg_default ' ) ;
index_name := partition_name||'_parameter_id_idx';
EXECUTE format('CREATE INDEX ' || quote_ident(index_name) || ' ON '|| quote_ident(partition_name) ||' USING btree ("PARAMETER_ID") TABLESPACE pg_default ' ) ;
index_name := partition_name||'_shipment_date_idx';
EXECUTE format('CREATE INDEX ' || quote_ident(index_name) || ' ON '|| quote_ident(partition_name) ||' USING btree ("SHIPMENT_DATE") TABLESPACE pg_default ' ) ;
end
$$;Nā hualoaʻa hope loa:
Kau
kāki: 502 997.55
Ka manawa hoʻokō: 505 kekona.
Ua lilo
kāki: 68 533.70
Ka manawa hoʻokō: 69 kekona
Pono, kūpono loa. A me ka noʻonoʻo ʻana ma ke ala a mākou i hoʻokele ai i ka ʻoi aku a i ʻole ka liʻiliʻi ʻana i ka ʻōnaehana partitioning ma PostgreSQL 10 - kahi hopena maikaʻi loa.
Hoʻopau lyrical
Hiki paha ke hana ʻoi aku ka maikaʻi - ʻAe, hiki iā ʻoe!No ka hana ʻana i kēia, pono ʻoe e hoʻohana i ka MATERIALIZED VIEW.
HĀLU IA MATERIALIZED VIEW LASERMARK_VIEW
CREATE MATERIALIZED VIEW LASERMARK_VIEW
AS
SELECT w."LASERMARK" , MAX(s."SHIPMENT_DATE") AS "SHIPMENT_DATE"
FROM shipment s INNER JOIN data w ON s."SHIPMENT_ID" = w."SHIPMENT_ID"
GROUP BY w."LASERMARK" ;
CREATE INDEX lasermark_vw_shipment_date_ind on lasermark_view USING btree ("SHIPMENT_DATE") TABLESPACE pg_default;
analyze lasermark_view ;
Ke kākau hou nei mākou i ka noi:
Nīnau me ka hoʻohana ʻana i ka ʻike materialized
SELECT
p."PARAMETER_ID" as parameter_id,
pc."PC_NAME" AS pc_name,
pc."CUSTOMER_PARTNUMBER" AS customer_partnumber,
w."LASERMARK" AS lasermark,
w."LOTID" AS lotid,
w."REPORTED_VALUE" AS reported_value,
w."LOWER_SPEC_LIMIT" AS lower_spec_limit,
w."UPPER_SPEC_LIMIT" AS upper_spec_limit,
p."TYPE_CALCUL" AS type_calcul,
s."SHIPMENT_NAME" AS shipment_name,
s."SHIPMENT_DATE" AS shipment_date,
extract(year from s."SHIPMENT_DATE") AS year,
extract(month from s."SHIPMENT_DATE") as month,
s."REPORT_NAME" AS report_name,
p."STC_NAME" AS STC_name,
p."CUSTOMERPARAM_NAME" AS customerparam_name
FROM data w INNER JOIN shipment s ON s."SHIPMENT_ID" = w."SHIPMENT_ID"
INNER JOIN parameters p ON p."PARAMETER_ID" = w."PARAMETER_ID"
INNER JOIN shipment_pc sp ON s."SHIPMENT_ID" = sp."SHIPMENT_ID"
INNER JOIN pc pc ON pc."PC_ID" = sp."PC_ID"
INNER JOIN LASERMARK_VIEW md ON md."SHIPMENT_DATE" = s."SHIPMENT_DATE" AND md."LASERMARK" = w."LASERMARK"
WHERE
s."SHIPMENT_DATE" >= '2018-07-01' AND s."SHIPMENT_DATE" <= '2018-09-30';
A loaʻa iā mākou kahi hopena ʻē aʻe:
Kau
kāki: 502 997.55
Ka manawa hoʻokō: 505 kekona
Ua lilo
kāki: 42 481.16
Ka manawa hoʻokō: 43 kekona.
ʻOiai, ʻoiaʻiʻo, he hoʻopunipuni kēlā hopena hoʻohiki; pono e hōʻoluʻolu ʻia nā manaʻo. No laila ʻaʻole kōkua nui ka manawa a pau no ka loaʻa ʻana o ka ʻikepili. Akā ma ke ʻano he hoʻokolohua he mea hoihoi loa ia.
ʻOiaʻiʻo, e like me ka mea i ʻike ʻia, mahalo hou a me Habru!-
Ma hope o ka'ōlelo
No laila, māʻona ka mea kūʻai. A ME makemake e lawe pono i ke kūlana.
Hana hou: He aha kāu e hiki ai ke hoʻonui a hoʻonui?
A laila hoʻomanaʻo wau - e nā kāne, ʻaʻohe o mākou nānā ʻana i kā mākou ʻikepili PostgreSQL.
ʻO ka lima ma ka puʻuwai, aia kekahi mau mākaʻikaʻi ma ke ʻano o Cloud Watch ma AWS. Akā he aha ka pōmaikaʻi o kēia nānā ʻana no ka DBA? Ma keʻano laulā, ʻaʻohe mea.
Inā loaʻa iā ʻoe kahi manawa e hana ai i kahi mea pono a hoihoi iā ʻoe iho, ʻaʻole hiki iā ʻoe ke hoʻohana i kēia manawa...
NO KA
ʻO kēia ke ala e hele ai mākou i kahi mea hoihoi loa:
Kekemapa 3, 2018.
Ke hoʻoholo nei e hoʻomaka i ka noiʻi ʻana i nā mea hiki ke nānā i ka hana o nā nīnau PostgreSQL.
Akā, he moʻolelo ʻokoʻa loa kēlā.
E hoʻomau ʻia…
Source: www.habr.com