PHPerに知ってほしいRDBの事その3

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PHPerʹ஌ͬͯ΄͍͠RDBͷࣄ Version 3.0 1)1ΧϯϑΝϨϯεˏؔ੢

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What is it? σʔλϕʔεͷण໋͸ ΞϓϦέʔγϣϯΑΓ΋௕͍

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What is it? ͦΜͳ௕͍෇͖߹͍ʹͳΔσʔλϕʔε ͷେ੾ͳࣄΛ͓఻͑͠·͢

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What is it? σʔλϕʔεͰ େ੾ͳ͜ͱ ΞϓϦέʔγϣϯͰ େ੾ͳ͜ͱ

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What is it? ΞϓϦέʔγϣϯͰ େ੾ͳ͜ͱ σʔλϕʔεͰ େ੾ͳ͜ͱ ͜͜ͷ࿩Λ͠·͢

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What is it? ର৅ͷσʔλϕʔειϑτ΢ΣΞ

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What is it? PostgreSQL 9.5ͱMySQL 5.7(InnoDB)ʹݶΔ ଞͷRDBͷ࿩͸͠·ͤΜ

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What is it? ׆༻ࣄྫ΍ηΩϡϦςΟͳͲͷ࿩ ↓ ֤σʔλϕʔεͷίϛϡχςΟʹࢀՃ͠Α͏ https://mysql-casual-slackin.herokuapp.com/ https://postgresql-hackers-jp.herokuapp.com/ େ੾ͳ࿩͚ͩͲࠓ೔͸͠ͳ͍͜ͱ

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What is it? ࠓ೔ͷ࿩͢Δ͜ͱ

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What is it? RDBΛ࢖͏্Ͱ͓͍֮͑ͯͯཉ͍͜͠ͱ

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What is it? RDBΛ࢖͏্Ͱ͓͍֮͑ͯͯཉ͍͜͠ͱ ↓ جૅతͳ͜ͱͰ͙࣮͢ફͰ͖Δ͜ͱ

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͋͐͡Μͩ ̍ɹࣗݾ঺հ ̎ɹݕࡧͱINDEX ̏ɹεΩʔϚϨε ̐ɹΞϯνύλʔϯ ̑ɹ·ͱΊ

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͋͐͡Μͩ ̍ɹࣗݾ঺հ ̎ɹݕࡧͱINDEX ̏ɹεΩʔϚϨε ̐ɹΞϯνύλʔϯ ̑ɹ·ͱΊ

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ࣗݾ঺հ ໊લɿીࠜɹ૖େʢͦͶɹ͚ͨͱ΋ʣ ೥ྸɿ31ࡀʢࡾਓͷࢠڙ͕͍·͢ʣ ৬ۀɿגࣜձࣾɹΦϛΧϨʢCTOʣ ॴଐɿ೔ຊPostgreSQLϢʔβձ ɹɹɹதࠃࢧ෦ ࢧ෦௕ ɹɹٕज़తʹ͸LLܥݴޠͱ͔RDB͕޷͖Ͱ͢

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What is it? d

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͋͐͡Μͩ ̍ɹࣗݾ঺հ ̎ɹݕࡧͱINDEX ̏ɹεΩʔϚϨε ̐ɹΞϯνύλʔϯ ̑ɹ·ͱΊ

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ݕࡧͱINDEX #5SFF*/%&9

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ݕࡧͱINDEX #5SFF*/%&9 3%#ͷ*/%&9͸جຊతʹ͜Ε ʢ(*/΍35SFFʹ͍ͭͯ͸ࠓճ৮Εͳ͍ʣ

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ݕࡧͱINDEX Ҿ༻ݩɿIUUQTKBXJLJQFEJBPSHXJLJ##&$" ΢ΟΩϖσΟΞʮ#໦ʯ

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ݕࡧͱINDEX w 8)&3&۟Ͱ࢖͏ w (3061#:۟Ͱ΋࢖͏ w 03%&3#:۟Ͱ΋࢖͏

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ݕࡧͱINDEX w 8)&3&۟Ͱ࢖͏ w (3061#:۟Ͱ΋࢖͏ w 03%&3#:۟Ͱ΋࢖͏ ݕࡧશൠͰ࢖͏

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ݕࡧͱINDEX w 8)&3&۟Ͱ࢖͏ w (3061#:۟Ͱ΋࢖͏ w 03%&3#:۟Ͱ΋࢖͏ ݕࡧશൠͰ࢖͏ ͔͠͠.Z42-͸ͭͷ5"#-&Ͱ ͔ͭ͠*/%&9Λ࢖Θͳ͍

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ݕࡧͱINDEX */%&9ΛޮՌతʹ࢖͏ʹ͸ w ॏෳ͕গͳ͍΄͏͕ྑ͍ w ݁Ռ͕গͳ͍΄͏͕ྑ͍

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ݕࡧͱINDEX */%&9ΛޮՌతʹ࢖͏ʹ͸ w ॏෳ͕গͳ͍΄͏͕ྑ͍ w ݁Ռ͕গͳ͍΄͏͕ྑ͍ 6OJRVF͕ཧ૝ ॏෳ͕ଟ͍৔߹ɺ*/%&9ͷҙຯ͕ബΕΔ Α͋͘Δͷ͸%&-&5&@'-"(

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ݕࡧͱINDEX */%&9ΛޮՌతʹ࢖͏ʹ͸ w ॏෳ͕গͳ͍΄͏͕ྑ͍ w ݁Ռ͕গͳ͍΄͏͕ྑ͍ ࢀরͷ5"#-&ͷશͯΛදࣔ͢ΔͳΒݩ͔Βશ ෦ݟͨ΄͏͕ྑ͍ શମͷʙ·Ͱ͕*/%&9ར༻ͷ໨҆

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ݕࡧͱINDEX */%&9Λ੍͢Δऀ͸ݕࡧΛ੍͢Δ

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ݕࡧͱINDEX ࣮ߦܭըΛݟΔ

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ݕࡧͱINDEX &91-"*/Ͱॏཁͳ͜ͱ w ૝ఆ͢ΔϨίʔυʹ࣮σʔλΛ͋ΘͤΔ w ౷ܭ৘ใΛ࠷৽ʹ͢Δ w ࣮ߦ݁Ռ͕ਖ਼͍͜͠ͱΛ֬ೝ͢Δ

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ݕࡧͱINDEX &91-"*/ͷ·ͱΊ w ެࣜυΩϡϝϯτΛಡ΋͏ UZQFͳͲ͸छྨ͕୔ࢁ͋Δ   IUUQTEFWNZTRMDPNEPDSFGNBOKBFYQMBJOPVUQVUIUNM  IUUQTXXXQPTUHSFTRMKQEPDVNFOUIUNMTRMFYQMBJOIUNM w ૉৼΓେࣄ

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ݕࡧͱINDEX .Z42-8PSLCFODI QHBENJO

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࣮ߦܭը CREATE TABLE `demo`.ùsers` ( ìd` INT NOT NULL AUTO_INCREMENT COMMENT '', `name` VARCHAR(45) NOT NULL COMMENT '', àge` INT NOT NULL COMMENT '', `created` DATETIME NOT NULL DEFAULT NOW () COMMENT '', PRIMARY KEY (ìd`) COMMENT '' ); ——શ݅Λબ୒͢ΔͷͰςʔϒϧεΩϟϯ SELECT * FROM demo.users; ——PRIMARY KEYʢINDEXʣΛར༻ͨ͠ྫ SELECT * FROM demo.users WHERE id > 100; ——INDEX͕ແ͍ͷͰςʔϒϧεΩϟϯ SELECT * FROM demo.users WHERE age > 20;

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MySQL

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MySQL

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MySQL ૬ؔαϒΫΤϦ

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૬ؔαϒΫΤϦ ——஗͍૬ؔαϒΫΤϦ SELECT * FROM users WHERE age IN (SELECT age FROM users WHERE id BETWEEN 10 AND 100000)

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MySQL

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MySQL .Z42-͔Β."5&3*"-*;&%ʹ มΘΓɺ+0*/ͷΑ͏ͳڍಈʹͳͬͨ ੲΑΓૣ͘ͳͬͨ

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૬ؔαϒΫΤϦ ——INDEX͕ར༻Ͱ͖Ε͹૬ؔαϒΫΤϦͰ΋଎͍ SELECT * FROM users WHERE created = '2016-02-27 04:31:32' AND id IN (SELECT id FROM users WHERE id BETWEEN 10 AND 100000)

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MySQL

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MySQL ૬ؔαϒΫΤϦ͸஗͍ ৔߹͕ଟ͍

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MySQL ૬ؔαϒΫΤϦ͸஗͍ ˣ +0*/ʹॻ͖׵͑Δ

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JOIN SELECT * FROM users INNER JOIN users AS tmp ON tmp.id = users.id AND tmp.id BETWEEN 10 AND 100000 WHERE users.created = '2016-02-27 04:31:32'

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MySQL

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MySQL +0*/͸ֻ͚ࢉ

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MySQL +0*/͸ֻ͚ࢉ ˣ ߦ☓ߦ͸ߦ

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MySQL .Z42-ʹ͸ +0*/ͷΞϧΰϦζϜ͸Ұ͔ͭ͠ͳ͍

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MySQL .Z42-ʹ͸ +0*/ͷΞϧΰϦζϜ͸Ұ͔ͭ͠ͳ͍ ܾͯ͠ಘҙͳΘ͚Ͱ͸ແ͍ +0*/͸ϋΠίετͳΫΤϦ

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MySQL w ग़དྷΔ͚ͩখ͔ͯ͘͞͠Β+0*/ w ෆཁͳ+0*/͸ආ͚Δ w */%&9Λར༻ͨ͠+0*/Λ͢Δ

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MySQL γϯϓϧɾߴ଎

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MySQL γϯϓϧɾߴ଎ ˣ ೉͍͠ࣄΛ͠ͳ͍ ઃܭྗ͕ॏཁ

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PostgreSQL w*/%&9͸ෳ਺ݸ࢖͑Δ wͦ΋ͦ΋*/%&9ͷछྨ͕୔ࢁ͋Δ w૬ؔαϒΫΤϦ΋଎͍ w+0*/ͷΞϧΰϦζϜ΋ෳ਺͋Δ

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PostgreSQL w*/%&9͸ෳ਺ݸ࢖͑Δ wͦ΋ͦ΋*/%&9ͷछྨ͕୔ࢁ͋Δ w૬ؔαϒΫΤϦ΋଎͍ w+0*/ͷΞϧΰϦζϜ΋ෳ਺͋Δ ͭͷΫΤϦ಺Ͱෳ਺࢖͑Δ

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PostgreSQL w*/%&9͸ෳ਺ݸ࢖͑Δ wͦ΋ͦ΋*/%&9ͷछྨ͕୔ࢁ͋Δ w૬ؔαϒΫΤϦ΋଎͍ w+0*/ͷΞϧΰϦζϜ΋ෳ਺͋Δ #USFFɺ(*/ɺࣜ*/%&9ͳͲγʔϯʹ߹Θͤͯ ෳ਺ͷ*/%&9Λར༻Ͱ͖Δ

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PostgreSQL w*/%&9͸ෳ਺ݸ࢖͑Δ wͦ΋ͦ΋*/%&9ͷछྨ͕୔ࢁ͋Δ w૬ؔαϒΫΤϦ΋଎͍ w+0*/ͷΞϧΰϦζϜ΋ෳ਺͋Δ ࢖͑Δ42-ͷߏจ΋ଟ͍ ྫ͑͹΢Πϯυ΢ؔ਺ͳͲ

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PostgreSQL w*/%&9͸ෳ਺ݸ࢖͑Δ wͦ΋ͦ΋*/%&9ͷछྨ͕୔ࢁ͋Δ w૬ؔαϒΫΤϦ΋଎͍ w+0*/ͷΞϧΰϦζϜ΋ෳ਺͋Δ /FTUFE-PPQ+PJO 4PSU.FSHF+PJO )BTI+PJO

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PostgreSQL

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PostgreSQL ͜ͷຊ͕͘͢͝ྑ͍ ͔͠͠ͷ࿩ IUUQXXXBNB[PODPKQ಺෦ߏ଄͔ΒֶͿ1PTUHSF42-ઃܭɾӡ༻ܭըͷమଇ4PGUXBSF%FTJHOQMVTEQ

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ෳ਺ར༻ͨ͠INDEX CREATE TABLE public.users ( id integer NOT NULL DEFAULT nextval('users_id_seq'::regclass), name text NOT NULL, age integer NOT NULL, created timestamp without time zone NOT NULL DEFAULT now(), CONSTRAINT users_pkey PRIMARY KEY (id)); CREATE INDEX users_created_idx ON public.users USING tree (created); ——idͱcreatedͷINDEXΛར༻͢Δ SELECT * FROM users WHERE id < 100 AND created < '2016-02-27 05:41:28';

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PostgreSQL

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ࣜINDEX ——ࣜINDEXΛ࡞੒ CREATE INDEX test_idx ON users (substr(name,10,12)); ——ࣜͷ݁ՌͰINDEX͕ޮ͘ SELECT name FROM users WHERE substr(name,10,12) = '10'

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PostgreSQL

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૬ؔαϒΫΤϦ SELECT * FROM users WHERE age IN (SELECT age FROM users WHERE id BETWEEN 10 AND 100000)

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PostgreSQL

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૬ؔαϒΫΤϦ ——σϞͰINDEXΛ࢖ͬͯ͘Εͳ͍ͷͰINDEXΛ༏ઌతʹར༻͢ΔΑ͏ʹࢦఆ SET ENABLE_SEQSCAN=OFF; SELECT * FROM users WHERE id IN (SELECT id FROM users WHERE id BETWEEN 10 AND 100000)

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PostgreSQL

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PostgreSQL 1PTUHSF42-ͷ૬ؔαϒΫΤϦ͸ ൺֱత଎͍

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PostgreSQL ෳࡶͳूܭ͸ಘҙ ˣ Ͱ΋3%#ͷجຊ͸.Z42-ͱҰॹ

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͋͐͡Μͩ ̍ɹࣗݾ঺հ ̎ɹݕࡧͱINDEX ̏ɹεΩʔϚϨε ̐ɹΞϯνύλʔϯ ̑ɹ·ͱΊ

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εΩʔϚϨεͱਖ਼نԽ w σʔλ͸ফͤͳ͍ w σʔλΛมߋͰ͖ͳ͍ w σʔλͷ௥ՃͰରԠ

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εΩʔϚϨεͱਖ਼نԽ σʔλͷෆ੔߹Ͱ೰·ͳ͍ͨΊʹ

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εΩʔϚϨεͱਖ਼نԽ σʔλͷෆ੔߹Ͱ೰·ͳ͍ͨΊʹ جຊ͸ਖ਼نԽʂʂ

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ਖ਼نԽ ΞϯέʔτϑΥʔϜ

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JE ໊લ ճ౴ TPOF IPHF 40/& GVHB TPVEBJ GPP UBLFUPNP CBS

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ਖ਼نԽ ΫϥΠΞϯτʮ͜͜ʹ࢓༷͕͋Δ͡ΌΖʁʯ ʈТʈ 㱭ʮ୒Ұճ౴ʯ㱬

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ਖ਼نԽ ΫϥΠΞϯτʮ͜͜ʹ࢓༷͕͋Δ͡ΌΖʁʯ ͜ΕΛ ʈТʈ 㲇㱭㱬㲇

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ਖ਼نԽ ΫϥΠΞϯτʮ͜͜ʹ࢓༷͕͋Δ͡ΌΖʁʯ ʈТʈ 㱭ʮෳ਺ճ౴ʯ㱬

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ਖ਼نԽ ରԠྫ w $47ʹͯ͠ೖΕΔ w ΧϥϜΛ૿΍ͯ͠ೖΕΔ w +40/ΛUFYUͰೖΕΔˡ/&8ʂ

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ਖ਼نԽ ରԠྫ w $47ʹͯ͠ೖΕΔ w ΧϥϜΛ૿΍ͯ͠ೖΕΔ w +40/ΛUFYUͰೖΕΔˡ/&8ʂ

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ਖ਼نԽ ରԠྫ w $47ʹͯ͠ೖΕΔ w ΧϥϜΛ૿΍ͯ͠ೖΕΔ w +40/ΛUFYUͰೖΕΔˡ/&8ʂ

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ਖ਼نԽ ରԠྫ w $47ʹͯ͠ೖΕΔ w ΧϥϜΛ૿΍ͯ͠ೖΕΔ w +40/ΛUFYUͰೖΕΔˡ/&8ʂ શ෦42-Ξϯνύλʔϯʂ

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ਖ਼نԽ δΣΠ΢ΥʔΫ͕ͳͥμϝ͔ w ݕࡧ͕ࢮ͵ -*,&bژ౎`Ͱ౦ژ౎΋ώοτ w ूܭ͕ࢮ͵ (3061#:ͳͲू໿ؔ਺͕࢖͑ͳ͍ w ߋ৽͕ࢮ͵ ੍໿͕ग़དྷͳ͍͠෦෼ߋ৽ग़དྷͳ͍

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ਖ਼نԽ ͳͷͰਖ਼نԽΛ͢Δ

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JE OBNF TPOF 40/& TPVEBJ UBLFUPNP JE ࣭໰ ࣭໰̍ ࣭໰̎ ࣭໰̏ ࣭໰̐ ճ౴ऀ@JE ࣭໰@JE ճ౴ ճ౴೔ IPHF GVHB GPP CBS ճ౴ऀ ࣭໰ ճ౴

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ਖ਼نԽ ਖ਼نԽ͢Δ͜ͱͰ σʔλͷߏ଄͕ڧ͘ͳΔ

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εΩʔϚϨε ࢓༷มߋͷͨͼʹ %#ߏ଄Λมߋ͢Δͷ͸େม

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εΩʔϚϨε ͦ͜Ͱ+40/ܕ

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εΩʔϚϨε .Z42-ˠ+40/ܕ cc 1PTUHSF42-ˠ+40/#ܕ

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εΩʔϚϨε 5&95ܕʹ+40/ೖΕΔͷͱ Կ͕ҧ͏ͷʁ

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εΩʔϚϨε ରԠྫ w ਖ਼͍͠+40/Ͱ༗Δ͜ͱ͕୲อग़དྷΔ w +40/ͷॊೈͳݕࡧ͕ग़དྷΔ w */%&9ΛషΔखஈ͕༻ҙ͞Ε͍ͯΔ

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εΩʔϚϨε ରԠྫ w ਖ਼͍͠+40/Ͱ༗Δ͜ͱ͕୲อग़དྷΔ w +40/ͷॊೈͳݕࡧ͕ग़དྷΔ w */%&9ΛషΔखஈ͕༻ҙ͞Ε͍ͯΔ */4&35ͷ࣌ʹσʔλͷόϦσʔγϣϯ͕͋Δ

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εΩʔϚϨε ରԠྫ w ਖ਼͍͠+40/Ͱ༗Δ͜ͱ͕୲อग़དྷΔ w +40/ͷॊೈͳݕࡧ͕ग़དྷΔ w */%&9ΛషΔखஈ͕༻ҙ͞Ε͍ͯΔ ,FZͷ͍͋·͍ݕࡧͳͲͦΕͧΕ༻ҙ͞ΕͯΔ

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εΩʔϚϨε ରԠྫ w ਖ਼͍͠+40/Ͱ༗Δ͜ͱ͕୲อग़དྷΔ w +40/ͷॊೈͳݕࡧ͕ग़དྷΔ w */%&9ΛషΔखஈ͕༻ҙ͞Ε͍ͯΔ .Z42-ͳΒ(FOFSBUFEDPMVNO 1PTUHSF42-ͳΒࣜ*/%&9ͰରԠՄೳ

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JE OBNF QSPQFSUJFT UFTU \lOBNFzzIPHF lBHFz zSPMFz^ UFTU \lOBNFzzGVHB lBHFz zSPMFz^ UFTU \lOBNFzzCBSz lBHFz zSPMFz^ UFTU \lOBNFzzGPPz lBHFz zSPMFz^ UFTU \lOBNFzUPUP lBHFz zSPMFz^ UFTU \lOBNFzzUJUJz lBHFz zSPMFz^ UFTU \lOBNFzzUBUBz lBHFz zSPMFz^ ɿ ɿ ɿ ɿ ɿ ɿ

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εΩʔϚϨε ஋Λࢦఆͨ͠ݕࡧ͕ग़དྷΔ

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࣮ࡍͷSQL(PostgreSQL) SELECT * FROM demo_json WHERE properties->>”name” = “hoge”

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࣮ࡍͷSQL(PostgreSQL) SELECT * FROM demo_json WHERE properties->>”name” = ‘hoge’ +40/ͷ஋Λࢦఆͯ͠௚઀ݕࡧग़དྷΔ

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࣮ࡍͷSQL(MySQL) SELECT * FROM demo_json WHERE json_extract(properties,'$.name') = 'hoge';

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࣮ࡍͷSQL(MySQL) SELECT * FROM demo_json WHERE json_extract(properties,'$.name') = 'hoge'; ؔ਺ʹݕࡧ͍ͨ͠,FZΛࢦఆ͢Δ

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JSONܕͱJSONBܕ */%&9Λࢦఆ͢Δ

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࣮ࡍͷSQL(PostgreSQL) CREATE INDEX ɹɹdemo_json_index ON ɹɹdemo_json ɹɹ(properties->>'name');

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࣮ࡍͷSQL(PostgreSQL) CREATE INDEX ɹɹdemo_json_index ON ɹɹdemo_json ɹɹ(properties->>'name'); */%&9໊

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࣮ࡍͷSQL(PostgreSQL) CREATE INDEX ɹɹdemo_json_index ON ɹɹdemo_json ɹɹ(properties->>'name'); */%&9໊ ର৅ςʔϒϧ

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࣮ࡍͷSQL(PostgreSQL) CREATE INDEX ɹɹdemo_json_index ON ɹɹdemo_json ɹɹ(properties->>'name'); */%&9໊ ର৅ςʔϒϧ ࣜΛࢦఆ͢Δ

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MySQLͷ৔߹ ࣜ*/%&9͕ແ͍ ˣ (FOFSBUFEDPMVNOΛ࢖͏

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MySQLͷ৔߹ JE OBNF QSPQFSUJFT Ծ૝ྻ UFTU \lOBNFzzIPHF lBHFz zSPMFz^ IPHF UFTU \lOBNFzzGVHB lBHFz zSPMFz^ GVHB UFTU \lOBNFzzCBSz lBHFz zSPMFz^ CBS UFTU \lOBNFzzGPPz lBHFz zSPMFz^ GPP ɿ ɿ ɿ ɿ ɿ ɿ

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JSONܕͱJSONBܕ ੍໿Λઃ͚Εͳ͍ ˣ ֎෦Ωʔ΍Ұҙ੍໿͕ͳ͍

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JSONܕͱJSONBܕ σʔλొ࿥ͷτϨʔυΦϑ

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JSONܕͱJSONBܕ σʔλొ࿥ͷτϨʔυΦϑ ˣ ࣗ༝ͳอଘɹ㱻ɹਖ਼͘͠कΔ

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JSONܕͱJSONBܕ ཁ݅ʹ߹Θͤͯબ୒ࢶΛબͿ

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JSONܕͱJSONBܕ ·ͱΊ ̍ɹ஋Ͱݕࡧ͕ग़དྷΔ ̎ɹ஋ͷݕࡧͰ*/%&9͕࢖͑Δ ̏ɹཁ݅ʹ߹Θͤͯબ୒ࢶΛબͿ

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εΩʔϚϨε ͜Μͳ৔߹͸࢖ͬͯ΋͍͍

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εΩʔϚϨε ར༻ྫ w +40/ͱଞͷςʔϒϧ͕௚઀ؔ࿈͠ͳ͍ w +40/ͷதͷ஋΍,FZͷ"EEͳͲͷ61%"5&ແ͍ w */4&35ͱ4&-&$5͕େ൒ͷߏ଄Ͱ͋Δ

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εΩʔϚϨε ར༻ྫ w +40/ͱଞͷςʔϒϧ͕௚઀ؔ࿈͠ͳ͍ w +40/ͷதͷ஋΍,FZͷ"EEͳͲͷ61%"5&ແ͍ w */4&35ͱ4&-&$5͕େ൒ͷߏ଄Ͱ͋Δ +40/ͷதͷ஋͕֎෦Ωʔ੍໿Λඞཁͱ͠ͳ͍

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εΩʔϚϨε ར༻ྫ w +40/ͱଞͷςʔϒϧ͕௚઀ؔ࿈͠ͳ͍ w +40/ͷதͷ஋΍,FZͷ"EEͳͲͷ61%"5&ແ͍ w */4&35ͱ4&-&$5͕େ൒ͷߏ଄Ͱ͋Δ ෦෼ߋ৽͸͋Δ͕ߴ଎Ͱ͸ͳ͍ খ͍͞+40/Λѻ͏ͳΒྑ͍

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εΩʔϚϨε ར༻ྫ w +40/ͱଞͷςʔϒϧ͕௚઀ؔ࿈͠ͳ͍ w +40/ͷதͷ஋΍,FZͷ"EEͳͲͷ61%"5&ແ͍ w */4&35ͱ4&-&$5͕େ൒ͷߏ଄Ͱ͋Δ +40/Λؙͬͱ61%"5&Ͱ͸ͳ͘සൟʹ ཁૉͷมߋ͕ඞཁͳ৔߹ɺͦΕ͸ਖ਼نԽ͢΂͖

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εΩʔϚϨε ͦ΋ͦ΋ʜ03.͕ࢮ͵ʂ

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εΩʔϚϨε ͝ར༻͸ܭըతʹ

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͋͐͡Μͩ ̍ɹࣗݾ঺հ ̎ɹݕࡧͱINDEX ̏ɹεΩʔϚϨε ̐ɹΞϯνύλʔϯ ̑ɹ·ͱΊ

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Ξϯνύλʔϯ %&-&5&@'-"(

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Ξϯνύλʔϯ ϑϥά໊ͬͯલ4&-&$5ͨ͠Β ͱ͔/6--͕͍Δ

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Ξϯνύλʔϯ ϑϥά໊ͬͯલ4&-&$5ͨ͠Β ͱ͔/6--͕͍Δ ΧϥϜ໊ͱσʔλ͕ണ཭͍ͯ͠Δ TUBUVTͷJOU͕ϚδοΫφϯόʔԽ

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Ξϯνύλʔϯ ඇਖ਼نԽ

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Ξϯνύλʔϯ ඇਖ਼نԽ ଎౓ͱਖ਼نԽ͸τϨʔυΦϑͱ ݴ͏৔߹΋͋Δ͕ਖ਼͍͠σʔλΛ࡞Ζ͏

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Ξϯνύλʔϯ ඇਖ਼نԽ ଎౓ͱਖ਼نԽ͸τϨʔυΦϑͱ ݴ͏৔߹΋͋Δ͕ਖ਼͍͠σʔλΛ࡞Ζ͏ ϚςϏϡʔͩͬͨΓΩϟογϡͰ ղܾग़དྷΔࣄ΋ଟ͍

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Ξϯνύλʔϯ ֎෦ΩʔϨεઃܭ

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Ξϯνύλʔϯ ֎෦ΩʔϨεઃܭ ਖ਼نԽ΋֎෦Ωʔ੍໿΋ σʔλΛकΔͨΊʹ͋Δʂʂ

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Ξϯνύλʔϯ ͦ΋ͦ΋3%#ษڧ͠Α͏

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Ξϯνύλʔϯ ӡ༻ͱઃܭͱཧ࿦ͷ࿩ ↓ SQLΞϯνύλʔϯͱDB࣮ફೖ໳Λಡ΋͏

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·ͱΊ

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Ξϯνύλʔϯ SQLͷ࢖͍ํͩͱ͜ͷຊ͕Φεεϝ

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·ͱΊ

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Ξϯνύλʔϯ ͋Δ೔ಥવ஗͘ͳΔ

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Ξϯνύλʔϯ ͋Δ೔ಥવ஗͘ͳΔ ˣ σʔλྔ͕ϝϞϦʹ৐Βͳ͘ͳΔ

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࣮ફͰϋϚΔ᠘ w ूܭର৅͕େ͖͘ͳͬͯूܭ࣌ʹϝϞϦʹ৐Βͳ͍  ˠ5FNQPSBSZΛ%JTLʹు͘ͷͰॏ͘ͳΔ w */%&9͕ແ͘5"#-&εΩϟϯΛ͍ͯͨ͠  ˠςετ࣌͸σʔλ͕খ͔ͬͨ͞ͷͰ໰୊ʹؾ͔ͮͳ͔ͬͨ w ϓϩάϥϜ͕ϧʔϓͷ਺͚ͩΫΤϦΛ౤͍͛ͯͨ  ˠߦ਺͕૿͑Δͱϧʔϓճ਺͕૿͑ͯॏ͘ͳΔ w ߋ৽͕ܹ͘͠*/%&9ͷஅยԽ͕ൃੜͨ͠  ˠ61%"5&΍%&-&5&ʹΑͬͯ*/%&9͕அยԽͯ͠஗͘ͳΔ

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͋͐͡Μͩ ̍ɹࣗݾ঺հ ̎ɹݕࡧͱINDEX ̏ɹεΩʔϚϨε ̐ɹΞϯνύλʔϯ ̑ɹ·ͱΊ