RDB anti-pattern that Java engineer wants to know

JJUG CCC 2017 spring での登壇資料です。

http://www.java-users.jp/ccc2017spring/

Transcript

1. JavaΤϯδχΞʹ஌ͬͯ΄͍͠ RDBΞϯνύλʔϯ ++6(
   $$$
   
   4QSJOH
2. What is it? ࠓ೔Έͳ͞Μʹ࣋ͬͯؼͬͯ΄͍͜͠ͱ
3. What is it? σʔλϕʔεͷण໋͸ ΞϓϦέʔγϣϯΑΓ΋௕͍
4. What is it? ͦΜͳ௕͍෇͖߹͍ʹͳΔσʔλϕʔε ͷେ੾ͳࣄΛ͓఻͑͠·͢
5. What is it? ର৅ͷσʔλϕʔειϑτ΢ΣΞ
6. What is it? PostgreSQL 9.6ͱMySQL 5.7(InnoDB)ʹݶΔ ଞͷRDBͷ࿩͸͠·ͤΜ
7. What is it? RDBΞϯνύλʔϯ
8. What is it? RDBΞϯνύλʔϯ ↓ ޙʑʹۤ͠ΈΛੜΉ
9. What is it? RDBΞϯνύλʔϯΛ஌Δ
10. What is it? RDBΞϯνύλʔϯΛ஌Δ ↓ ಉ͡աͪΛ܁Γฦ͞ͳ͍
11. What is it? ࠓ೔͸RDBͷࣦഊྫΛ͝঺հ͠·͢
12. ͋͐͡Μͩ ̍ɹࣗݾ঺հ ̎ɹσʔλϕʔεͷ໎ٶ ̏ɹڧ͗͢Δ੍໿ ̐ɹ؂ࢹ͞Εͳ͍σʔλϕʔε ̑ɹ·ͱΊ
13. ͋͐͡Μͩ ̍ɹࣗݾ঺հ ̎ɹσʔλϕʔεͷ໎ٶ ̏ɹڧ͗͢Δ੍໿ ̐ɹ؂ࢹ͞Εͳ͍σʔλϕʔε ̑ɹ·ͱΊ
14. ࣗݾ঺հ ໊લɿીࠜɹ૖େʢͦͶɹ͚ͨͱ΋ʣ ೥ྸɿ32ࡀʢࡾਓͷࢠڙ͕͍·͢ʣ ৬ۀɿηʔϧεΤϯδχΞ ॴଐɿגࣜձࣾ ͸ͯͳʢMackerelνʔϜʣ ɹɹɹ೔ຊPostgreSQLϢʔβձ ɹɹɹɹɹதࠃࢧ෦ ࢧ෦௕ ɹɹٕज़తʹ͸LLܥݴޠͱ͔RDB͕޷͖Ͱ͢
15. ࣗݾ঺հ ໊લɿીࠜɹ૖େʢͦͶɹ͚ͨͱ΋ʣ ೥ྸɿ32ࡀʢࡾਓͷࢠڙ͕͍·͢ʣ ৬ۀɿηʔϧεΤϯδχΞ ॴଐɿגࣜձࣾ ͸ͯͳʢMackerelνʔϜʣ ɹɹɹ೔ຊPostgreSQLϢʔβձ ɹɹɹɹɹதࠃࢧ෦ ࢧ෦௕ ɹɹٕज़తʹ͸LLܥݴޠͱ͔RDB͕޷͖Ͱ͢
16. Mackerel
17. Mackerel
18. ͸ͯͳ͸஥ؒΛ୳ͯ͠·͢ curl -sIL mackerel.io | grep engineer
19. ࣗݾ঺հ ໊લɿીࠜɹ૖େʢͦͶɹ͚ͨͱ΋ʣ ೥ྸɿ32ࡀʢࡾਓͷࢠڙ͕͍·͢ʣ ৬ۀɿηʔϧεΤϯδχΞ ॴଐɿגࣜձࣾ ͸ͯͳʢMackerelνʔϜʣ ɹɹɹ೔ຊPostgreSQLϢʔβձ ɹɹɹɹɹதࠃࢧ෦ ࢧ෦௕ ɹɹٕज़తʹ͸LLܥݴޠͱ͔RDB͕޷͖Ͱ͢
20. ͋͐͡Μͩ ̍ɹࣗݾ঺հ ̎ɹσʔλϕʔεͷ໎ٶ ̏ɹڧ͗͢Δ੍໿ ̐ɹ؂ࢹ͞Εͳ͍σʔλϕʔε ̑ɹ·ͱΊ
22. σʔλϕʔεͷ໎ٶ 4PGUXBSF%FTJHOΛಡΜͰ͘Εʂʂ
    Ҏ্οʂʂʂʂ
23. σʔλϕʔεͷ໎ٶ σʔλϕʔεͷઃܭͷ࿩
24. σʔλϕʔεͷ໎ٶ demo=# SELECT delete_falg AS delete_flag FROM users GROUP BY delete_flag delete_flag ------------- 1 2 0 9 99 NULL (6 ߦ)
25. σʔλϕʔεͷ໎ٶ ▪࢓༷ॻ_20170513(1).xls 0: ະ࡟আ 1: ࡟আࡁΈ 2: ؅ཧऀʹΑΔڧ੍࡟আ 9: ຣফ 99: Α͘Θ͔Βͳ͍ NULL: όάͰೖΔ
26. σʔλϕʔεͷ໎ٶ NFNP
    NFNP
    NFNP
27. σʔλϕʔεͷ໎ٶ NFNP
    NFNP
    NFNP NFNPͰ͸ͳ͘NFNPͷͱ͜Ζ͕ྺ࢙Λײͤ͡͞Δ
28. σʔλϕʔεͷ໎ٶ σʔλϕʔεͷ໎ٶͷ໰୊
29. σʔλϕʔεͷ໎ٶ w ෆద੾ͳ໊લͰ͸σʔλϕʔεͷςʔϒϧͷؔ࿈ੑ ΍ҙਤ͕ཧղͰ͖ͳ͍
    w ϦϨʔγϣφϧϞσϧΛج͍ͮͨઃܭ͍ͯ͠ͳ͍ͱ طଘͷศརͳπʔϧΛར༻ग़དྷͳ͍
    w อଘ͞Εͨσʔλ͕ਖ਼͍͔͠Ͳ͏͔͕൑அग़དྷͳ͍
    w ͲͷΑ͏ͳσʔλΛอଘ͠ɺͲͷΑ͏ͳσʔλΛ
 औΓग़ͤ͹͍͍͔Θ͔Βͳ͍
30. σʔλϕʔεͷ໎ٶ w ෆద੾ͳ໊લͰ͸σʔλϕʔεͷςʔϒϧͷؔ࿈ੑ ΍ҙਤ͕ཧղͰ͖ͳ͍
    w ϦϨʔγϣφϧϞσϧΛج͍ͮͨઃܭ͍ͯ͠ͳ͍ͱ طଘͷศརͳπʔϧΛར༻ग़དྷͳ͍
    w อଘ͞Εͨσʔλ͕ਖ਼͍͔͠Ͳ͏͔͕൑அग़དྷͳ͍
    w ͲͷΑ͏ͳσʔλΛอଘ͠ɺͲͷΑ͏ͳσʔλΛ
 औΓग़ͤ͹͍͍͔Θ͔Βͳ͍
31. σʔλϕʔεͷ໎ٶ w ෆద੾ͳ໊લͰ͸σʔλϕʔεͷςʔϒϧͷؔ࿈ੑ ΍ҙਤ͕ཧղͰ͖ͳ͍
    w ϦϨʔγϣφϧϞσϧΛج͍ͮͨઃܭ͍ͯ͠ͳ͍ͱ طଘͷศརͳπʔϧΛར༻ग़དྷͳ͍
    w อଘ͞Εͨσʔλ͕ਖ਼͍͔͠Ͳ͏͔͕൑அग़དྷͳ͍
    w ͲͷΑ͏ͳσʔλΛอଘ͠ɺͲͷΑ͏ͳσʔλΛ
 औΓग़ͤ͹͍͍͔Θ͔Βͳ͍
32. σʔλϕʔεͷ໎ٶ w ෆద੾ͳ໊લͰ͸σʔλϕʔεͷςʔϒϧͷؔ࿈ੑ ΍ҙਤ͕ཧղͰ͖ͳ͍
    w ϦϨʔγϣφϧϞσϧΛج͍ͮͨઃܭ͍ͯ͠ͳ͍ͱ طଘͷศརͳπʔϧΛར༻ग़དྷͳ͍
    w อଘ͞Εͨσʔλ͕ਖ਼͍͔͠Ͳ͏͔͕൑அग़དྷͳ͍
    w ͲͷΑ͏ͳσʔλΛอଘ͠ɺͲͷΑ͏ͳσʔλΛ
 औΓग़ͤ͹͍͍͔Θ͔Βͳ͍
33. σʔλϕʔεͷ໎ٶ w ෆద੾ͳ໊લͰ͸σʔλϕʔεͷςʔϒϧͷؔ࿈ੑ ΍ҙਤ͕ཧղͰ͖ͳ͍
    w ϦϨʔγϣφϧϞσϧΛج͍ͮͨઃܭ͍ͯ͠ͳ͍ͱ طଘͷศརͳπʔϧΛར༻ग़དྷͳ͍
    w อଘ͞Εͨσʔλ͕ਖ਼͍͔͠Ͳ͏͔͕൑அग़དྷͳ͍
    w ͲͷΑ͏ͳσʔλΛอଘ͠ɺͲͷΑ͏ͳσʔλΛ
 औΓग़ͤ͹͍͍͔Θ͔Βͳ͍
34. σʔλϕʔεͷ໎ٶ ࿦ཧ*%
35. σʔλϕʔεͷ໎ٶ ࿦ཧ*%
    ˣ
    ձһ*%Λྫʹ͠·͢
36. σʔλϕʔεͷ໎ٶ 
37. σʔλϕʔεͷ໎ٶ  ͔Β࢝·Δͷ͸ҰൠϢʔβ
    ͔Β࢝·Δͷ͸؅ཧϢʔβ
38. σʔλϕʔεͷ໎ٶ  Ϣʔβͷ౎ಓ෎ݝΛද͢
39. σʔλϕʔεͷ໎ٶ  ຊ౰ͷձһ*%
40. σʔλϕʔεͷ໎ٶ σʔλʹϩδοΫΛຒΊࠐΉͳͬʂ
41. σʔλϕʔεͷ໎ٶ σʔλʹϩδοΫΛຒΊࠐΉͳͬʂ
    ˣ
    σʔλΛσʔλͱͯ͠ಡΈऔΕͳ͍
42. σʔλϕʔεͷ໎ٶ ॲํᝦ
    w ΧϥϜΛਖ਼໊͘͠લΛ͚ͭΔ
    w σʔλͷ੹຿Λ෼͚Δ
    w มԽʹ߹ΘͤͯϦϑΝΫλϦϯά͢Δ
43. σʔλϕʔεͷ໎ٶ ॲํᝦ
    w ΧϥϜΛਖ਼໊͘͠લΛ͚ͭΔ
    w σʔλͷ੹຿Λ෼͚Δ
    w มԽʹ߹ΘͤͯϦϑΝΫλϦϯά͢Δ
44. σʔλϕʔεͷ໎ٶ ϦϑΝΫλϦϯάͷྫ
45. σʔλϕʔεͷ໎ٶ JE ໊લ ೥ྸ  ીࠜɹ૖େ   ીࠜɹኽָ   ીࠜɹᗅָ   ીࠜɹࡣָ  ݱঢ়
46. σʔλϕʔεͷ໎ٶ ձһJE ໊લ ೥ྸ ݖݶJE ౎ಓ෎ݝJE  ીࠜɹ૖େ     ીࠜɹኽָ     ીࠜɹᗅָ     ીࠜɹࡣָ    ཧ૝
47. σʔλϕʔεͷ໎ٶ JE ձһJE ໊લ ೥ྸ ݖݶJE ౎ಓ෎ݝJE  /6-- ીࠜɹ૖େ  /6-- /6--  /6-- ીࠜɹኽָ  /6--
    /6--  /6-- ીࠜɹᗅָ 
    /6-- /6--  /6-- ીࠜɹࡣָ  /6-- /6-- ର৅ͷΧϥϜΛ௥Ճ
48. σʔλϕʔεͷ໎ٶ JE ձһJE ໊લ ೥ྸ ݖݶJE ౎ಓ෎ݝJE   ીࠜɹ૖େ      ીࠜɹኽָ      ીࠜɹᗅָ      ીࠜɹࡣָ    ର৅ͷΧϥϜΛ௥Ճ
49. σʔλϕʔεͷ໎ٶ Ͳ͏΍ͬͯ࿦ཧ*%Λ
    ৽͍͠ΧϥϜʹೖΕΔ͔
50. σʔλϕʔεͷ໎ٶ ϦϑΝΫλϦϯάख๏ͷྫ
    w */4&35΍61%"5&ͷ࣌ʹΞϓϦ͕ೖΕΔ
    w */4&35΍61%"5&ͷ࣌ʹτϦΨʔΛ࢖͏
    w Ծ૝ྻ΍7JFXΛ࢖͏
51. σʔλϕʔεͷ໎ٶ ձһJE ໊લ ೥ྸ ݖݶJE ౎ಓ෎ݝJE  ીࠜɹ૖େ     ીࠜɹኽָ     ીࠜɹᗅָ     ીࠜɹࡣָ    ཧ૝ͷ7JFXΛ࡞Δ
52. σʔλϕʔεͷ໎ٶ αʔϏεͷੑ࣭ʹ߹Θͤͯ
    ख๏ΛબͿ
53. ͋͐͡Μͩ ̍ɹࣗݾ঺հ ̎ɹσʔλϕʔεͷ໎ٶ ̏ɹڧ͗͢Δ੍໿ ̐ɹ؂ࢹ͞Εͳ͍σʔλϕʔε ̑ɹ·ͱΊ
54. ڧ͗͢Δ੍໿ σʔλϕʔε͸
    αʔϏεʹ༩͑ΔӨڹൣғ͕޿͍
55. ڧ͗͢Δ੍໿ ༩͑ΔӨڹൣғͷྫ
    w %#Λఀࢭ͢ΔͱαʔϏε͕ࢭ·Δ
    w มߋ͢Δͱෳ਺αʔϏεͷվम͕ඞཁ
    w σʔλ͸ৗʹ஝ੵ͞Ε͍ͯ͘
56. ڧ͗͢Δ੍໿ ࣌ؒܦաͰσʔλ͕੒௕͢Δ
57. ڧ͗͢Δ੍໿ ͭ·Γมߋ͕େม
    
58. ڧ͗͢Δ੍໿ ͭ·Γมߋ͕େม
    ˣ
    ͕࣌ؒܦͯ͹ܦͭ΄Ͳঢ়گ͕ѱԽ
    
59. ڧ͗͢Δ੍໿ ͔ͩΒͦ͜ਖ਼͍͠ઃܭʹҭͯΔ΂͖
60. ڧ͗͢Δ੍໿ ͦͷͨΊʹ3%#ͷػೳΛ׆༻͢Δ
61. ڧ͗͢Δ੍໿ ͦͷͨΊʹ3%#ͷػೳΛ׆༻͢Δ
    ˣ
    ͔ͦ͠͠Ε͕ཪ໨ʹग़Δ͜ͱ΋
62. ڧ͗͢Δ੍໿ 3%#ͷػೳʹґଘ͗͢͠Δͱ
    ͦΕ͸ڧ͗͢Δ੍໿ʹͳΔ
63. ڧ͗͢Δ੍໿ ڧ͗͢Δ੍໿ͷྫ
    w τϦΨʔ͕ଟ͘ͷ5"#-&ʹӨڹΛ༩͑Δ
    w ετΞυ͕ϩδοΫΛ࣋ͪ͗͢Δ
    w ϚςϏϡʔ΍%#
    -JOLͷଟ༻͗͢͠Δ
64. ڧ͗͢Δ੍໿ 3%#ͷػೳ͸ͱͯ΋ศར
    
65. ڧ͗͢Δ੍໿ 3%#ͷػೳ͸ͱͯ΋ศར
    ˣ
    ͔ۜ͠͠ͷ஄ؙͰ͸ͳ͍
66. ڧ͗͢Δ੍໿ ઃܭͷόϥϯεײ͕֮େࣄ
67. ڧ͗͢Δ੍໿ ॲํᝦ
    w ͦͷػೳΛར༻͢ΔظؒΛݕ౼͢Δ
    w ͦͷػೳͷӨڹൣғΛཧղ͢Δ
    w ຊ౰ʹ࠷దͳΞϓϩʔν͔໰͍௚͢
68. ڧ͗͢Δ੍໿ ॲํᝦ
    w ͦͷػೳΛར༻͢ΔظؒΛݕ౼͢Δ
    w ͦͷػೳͷӨڹൣғΛཧղ͢Δ
    w ຊ౰ʹ࠷దͳΞϓϩʔν͔໰͍௚͢
69. ڧ͗͢Δ੍໿ ਓ͸աڈͷ੒ޭମݧͷ
    όΠΞε͕͔͔Δ
70. ڧ͗͢Δ੍໿ ਓ͸աڈͷࣦഊମݧ΋
    όΠΞε͕͔͔Δ
71. ڧ͗͢Δ੍໿ ઃܭͷόϥϯεײ͕֮େࣄ
72. ڧ͗͢Δ੍໿ ઃܭͷόϥϯεײ͕֮େࣄ
    ˣ
    ଟ͘ͷઃܭΛݟͯཆ͏͜ͱ͕େࣄ
73. ͋͐͡Μͩ ̍ɹࣗݾ঺հ ̎ɹσʔλϕʔεͷ໎ٶ ̏ɹڧ͗͢Δ੍໿ ̐ɹ؂ࢹ͞Εͳ͍σʔλϕʔε ̑ɹ·ͱΊ
74. ؂ࢹ͞Εͳ͍σʔλϕʔε ؂ࢹͱϞχλϦϯά
75. ؂ࢹ͞Εͳ͍σʔλϕʔε
76. ؂ࢹ͞Εͳ͍σʔλϕʔε
77. ؂ࢹ͞Εͳ͍σʔλϕʔε ͳΜͰςετॻ͘ͷʹ
    ϞχλϦϯά͠ͳ͍ΜͰ͔͢ʁ
78. ؂ࢹ͞Εͳ͍σʔλϕʔε ؂ࢹ͸ࡾஈ֊͋Δ
79. ؂ࢹ͞Εͳ͍σʔλϕʔε w͍ͪૣ͘ো֐ൃੜΛ֬ೝ͢Δ
    w෮چͷͨΊͷݪҼΛ֬ೝ͢Δ
    wঢ়گͷมԽΛ࣌ܥྻͰ؂ࢹ͢Δ͜ͱͰ Ϧιʔε؅ཧ΍ো֐ͷ༧ஹͷ೺Ѳ͢Δ
80. ؂ࢹ͞Εͳ͍σʔλϕʔε w͍ͪૣ͘ো֐ൃੜΛ֬ೝ͢Δ
    w෮چͷͨΊͷݪҼΛ֬ೝ͢Δ
    wঢ়گͷมԽΛ࣌ܥྻͰ؂ࢹ͢Δ͜ͱͰ Ϧιʔε؅ཧ΍ো֐ͷ༧ஹͷ೺Ѳ͢Δ ࢮ׆؂ࢹ
81. ؂ࢹ͞Εͳ͍σʔλϕʔε w͍ͪૣ͘ো֐ൃੜΛ֬ೝ͢Δ
    w෮چͷͨΊͷݪҼΛ֬ೝ͢Δ
    wঢ়گͷมԽΛ࣌ܥྻͰ؂ࢹ͢Δ͜ͱͰ Ϧιʔε؅ཧ΍ো֐ͷ༧ஹͷ೺Ѳ͢Δ νΣοΫ؂ࢹ
82. ؂ࢹ͞Εͳ͍σʔλϕʔε w͍ͪૣ͘ো֐ൃੜΛ֬ೝ͢Δ
    w෮چͷͨΊͷݪҼΛ֬ೝ͢Δ
    wঢ়گͷมԽΛ࣌ܥྻͰ؂ࢹ͢Δ͜ͱͰ Ϧιʔε؅ཧ΍ো֐ͷ༧ஹͷ೺Ѳ͢Δ ϞχλϦϯά؂ࢹ
83. ؂ࢹ͞Εͳ͍σʔλϕʔε
84. ؂ࢹ͞Εͳ͍σʔλϕʔε
85. ؂ࢹ͞Εͳ͍σʔλϕʔε Πϯϑϥ͸ੜ͖෺
86. ؂ࢹ͞Εͳ͍σʔλϕʔε Πϯϑϥ͸ੜ͖෺
    ˣ
    ೔ʑͷ੒௕ه࿥ΛݟΔ
87. ؂ࢹ͞Εͳ͍σʔλϕʔε աڈΛ஌Δ͜ͱͰ
    ࠓͷ৔ॴ͕Θ͔Δ
88. ؂ࢹ͞Εͳ͍σʔλϕʔε ࠓͱաڈͷࠩ෼
    
89. ؂ࢹ͞Εͳ͍σʔλϕʔε ࠓͱաڈͷࠩ෼
    ˣ
    ະདྷΛ஌ΔͨΊͷࡐྉ
90. ؂ࢹ͞Εͳ͍σʔλϕʔε ؂ࢹ͢΂͖߲໨
    w ౷ܭ৘ใ΍04ϦιʔεͳͲ3%#ͷঢ়ଶ
    w εϩʔΫΤϦϩά΍ΤϥʔϩάͳͲ
    w ෳ਺ͷ%#ΛॏͶͨൺֱ
91. ؂ࢹ͞Εͳ͍σʔλϕʔε ϞχλϦϯά͸վળͷҰา໨
92. ؂ࢹ͞Εͳ͍σʔλϕʔε ॲํᝦ
    w ద੾ʹϞχλϦϯάΛ͢Δ
    w ϞχλϦϯάπʔϧΛ׆༻͢Δ
    w վળͷͨΊͷҰา໨Λ౿Έग़͢
93. ͋͐͡Μͩ ̍ɹࣗݾ঺հ ̎ɹσʔλϕʔεͷ໎ٶ ̏ɹڧ͗͢Δ੍໿ ̐ɹ؂ࢹ͞Εͳ͍σʔλϕʔε ̑ɹ·ͱΊ
94. ·ͱΊ ۪ऀ͸ܦݧʹֶͿ
    ݡऀ͸աڈʹֶͿ
95. ·ͱΊ ΞϯνύλʔϯΛ஌Δ
96. ·ͱΊ
97. ·ͱΊ SQLΞϯνύλʔϯ͸ݫબ͞Εࣦͨഊू
98. ·ͱΊ SQLΞϯνύλʔϯ͸ݫબ͞Εࣦͨഊू ↓ DBͷϊ΢ϋ΢͕٧·໊ͬͨஶ
99. ·ͱΊ Ұ౓࡞ͬͨ%#͸ফͤͳ͍
    
100. ·ͱΊ Ұ౓࡞ͬͨ%#͸ফͤͳ͍
     ˣ
     ઃܭ͕େࣄ
101. ·ͱΊ σʔλϕʔεͷࢮ͸αʔϏεͷࢮ
102. ·ͱΊ σʔλϕʔεͷࢮ͸αʔϏεͷࢮ
     ˣ
     ղܾͰ͖Δਓ͸ӳ༤
103. ·ͱΊ %#ͷ໰୊͸๨Εͨࠒʹ΍ͬͯ͘Δ
104. ·ͱΊ
105. ·ͱΊ αʔϏε΍νʔϜΛकΔ
106. ·ͱΊ αʔϏε΍νʔϜΛकΔ
     ˣ
     ͦͷͨΊʹֶͿ
107. ·ͱΊ पғͷܦݧஊ͔ΒֶͿ
     
108. ·ͱΊ पғͷܦݧஊ͔ΒֶͿ
     ˣ
     ੵۃతʹίϛϡχςΟΛར༻͢Δ
109. ࢀߟࢿྉ ɾQPTUHSFTRMKQ
     4MBDL νϟοτϧʔϜ
     IUUQTQPTUHSFTRMIBDLFSTKQIFSPLVBQQDPN
     ɾNZTRMDBTVBM
     4MBDL νϟοτϧʔϜ
     IUUQTNZTRMDBTVBMTMBDLJOIFSPLVBQQDPN
     
110. ·ͱΊ 3%#ͷ஌ࣝ͸ण໋͕௕͍
111. ·ͱΊ 3%#ͷ஌ࣝ͸ण໋͕௕͍
     ˣ
     ֮͑Ε͹࢓ࣄͰ௕͍ؒ໾ʹཱͭ
112. ·ͱΊ lखΛಈ͔ͨ͠ਓ͚͕ͩੈքΛม͑Δz
     Š:BTVIJSP
     0OJTIJ
113. ·ͱΊ ΑΓྑ͍ઃܭΛ
     Ұॹʹߟ͑ͯߦ͖·͠ΐ͏
114. ͝ਗ਼ௌ͋Γ͕ͱ͏͍͟͝·ͨ͠ɻ