回答編集履歴
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追記
test
CHANGED
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@@ -83,3 +83,123 @@
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83
83
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having name='aaaa' and q1='y'
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85
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```
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86
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87
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# 追記
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88
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89
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- なんか変なので書き直し
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90
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91
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92
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93
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```SQL
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94
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95
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select name,q,yn,count(*) as count
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96
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97
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,count(*)/(select count(*) from `check` as t2 where t1.name=t2.name) as ratio
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98
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99
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from (
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100
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select name,'q1' as q,q1 as yn from `check`
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102
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103
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union all select name,'q2',q2 from `check`
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104
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105
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union all select name,'q3',q3 from `check`
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106
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107
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union all select name,'q4',q4 from `check`
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108
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) as t1
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110
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111
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group by name,q,yn
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112
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113
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```
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114
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115
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116
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117
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- 上記集計して
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118
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119
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```SQL
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120
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121
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select name
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122
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123
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,yn
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124
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125
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,sum((q='q1')* ratio) as q1
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126
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127
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,sum((q='q2')* ratio) as q2
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128
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129
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,sum((q='q3')* ratio) as q3
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130
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,sum((q='q4')* ratio) as q4
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from(
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select name,q,yn,count(*) as count
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,count(*)/(select count(*) from `check` as t2 where t1.name=t2.name) as ratio
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from (
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140
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select name,'q1' as q,q1 as yn from `check`
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142
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143
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union all select name,'q2',q2 from `check`
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145
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union all select name,'q3',q3 from `check`
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146
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147
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union all select name,'q4',q4 from `check`
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148
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149
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) as t1
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150
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151
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group by name,q,yn
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152
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153
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) as t3
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154
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group by name,yn
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156
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```
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158
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159
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160
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161
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- havingで条件をつけて抽出
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162
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163
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```SQL
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164
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165
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select name
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166
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167
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,yn
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168
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,sum((q='q1')* ratio) as q1
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170
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,sum((q='q2')* ratio) as q2
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172
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,sum((q='q3')* ratio) as q3
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174
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175
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,sum((q='q4')* ratio) as q4
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176
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177
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from(
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178
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179
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select name,q,yn,count(*) as count
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180
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181
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,count(*)/(select count(*) from `check` as t2 where t1.name=t2.name) as ratio
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182
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183
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from (
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184
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185
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select name,'q1' as q,q1 as yn from `check`
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186
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187
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union all select name,'q2',q2 from `check`
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188
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189
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union all select name,'q3',q3 from `check`
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190
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191
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union all select name,'q4',q4 from `check`
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192
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) as t1
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194
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195
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group by name,q,yn
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196
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197
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) as t3
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198
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group by name,yn
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200
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having name='aaaa' and yn='y'
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202
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203
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204
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205
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```
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