回答編集履歴
2
追記
test
CHANGED
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@@ -27,3 +27,69 @@
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27
27
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and p.person_code = h3.person_code
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28
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```
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30
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+
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31
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+
上記をイメージし易いような別な記述にすると、
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32
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33
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```SQL
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34
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+
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35
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SELECT p.person_name
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36
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+
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37
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+
, h1.used_date 代休, h2.used_date 有給, h3.used_date 怪我病欠
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38
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+
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39
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FROM PERSON p
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40
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+
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left JOIN (
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select * from HOLIDAY where holiday_code='1000'
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+
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45
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) h1
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46
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+
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ON p.person_code = h1.person_code
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48
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+
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left JOIN (
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50
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select * from HOLIDAY where holiday_code='2000'
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52
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53
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) h2
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54
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55
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ON p.person_code = h2.person_code
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57
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left JOIN (
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select * from HOLIDAY where holiday_code='3000'
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) h3
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62
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+
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63
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ON p.person_code = h3.person_code
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64
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+
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65
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```
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66
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+
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67
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where条件で指定しようとすると、
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68
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69
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```SQL
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70
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+
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71
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SELECT p.person_name
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72
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+
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73
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+
, h1.used_date 代休, h2.used_date 有給, h3.used_date 怪我病欠
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74
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+
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75
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FROM PERSON p
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76
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77
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left JOIN HOLIDAY h1
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78
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+
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ON p.person_code = h1.person_code
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80
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+
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81
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left JOIN HOLIDAY h2
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82
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+
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83
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ON p.person_code = h2.person_code
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84
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+
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85
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left JOIN HOLIDAY h3
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86
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+
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87
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ON p.person_code = h3.person_code
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88
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89
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where (h1.holiday_code='1000' or h1.holiday_code is null)
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90
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91
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and (h2.holiday_code='2000' or h2.holiday_code is null)
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92
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93
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and (h3.holiday_code='3000' or h3.holiday_code is null)
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94
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95
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```
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1
訂正
test
CHANGED
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@@ -16,13 +16,13 @@
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16
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left JOIN HOLIDAY h2
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-
ON h
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ON h2.holiday_code='2000'
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and p.person_code = h2.person_code
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left JOIN HOLIDAY h3
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-
ON h
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ON h3.holiday_code='3000'
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27
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and p.person_code = h3.person_code
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