回答編集履歴
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追記
test
CHANGED
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@@ -81,3 +81,47 @@
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81
81
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)
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82
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83
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```
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84
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+
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85
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削除じゃないタイプ
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86
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87
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```SQL
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88
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89
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select * from tbl where col1 in(
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90
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91
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select col1
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92
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93
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from (
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94
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95
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select col1,group_concat(concat(col2,'_'),concat(col3,'_'),col4 order by col2,col3,col4 separator ':') as val
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96
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97
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from tbl
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98
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99
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group by col1
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100
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) as t1
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102
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103
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104
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105
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having (select count(*)+1 from (select *
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from (
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108
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109
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select col1,group_concat(concat(col2,'_'),concat(col3,'_'),col4 order by col2,col3,col4 separator ':') as val
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110
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111
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from tbl
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112
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113
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group by col1
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114
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115
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) as t2
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116
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117
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) as t3
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118
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119
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where col1<t1.col1
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120
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121
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and val=t1.val
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122
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123
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) =1
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124
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125
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)
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```
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