質問編集履歴
5
aaaaaa
test
CHANGED
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@@ -1 +1 @@
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1
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-
MySQLでのSELECTした
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1
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+
MySQLでのSELECTで名前変更したものをを検索する方法。
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test
CHANGED
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@@ -2,7 +2,7 @@
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2
2
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3
3
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4
4
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5
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-
SQLでSELECTで変更した値を検索したい。
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5
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+
SQLでSELECTで名前を変更した値を検索したい。
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6
6
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7
7
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8
8
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@@ -26,9 +26,9 @@
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26
26
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27
27
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ELSE 99
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28
28
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29
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-
END as gender
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29
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+
END as gender1
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30
30
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31
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-
FROM users where gender = 2
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31
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+
FROM users where gender1 = 2
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33
33
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34
34
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@@ -40,11 +40,11 @@
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40
40
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41
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gender
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42
42
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43
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-
) gender
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43
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+
) gender1
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44
44
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45
45
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FROM users
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46
46
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47
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-
where gender = 2;
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47
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+
where gender1 = 2;
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48
48
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49
49
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50
50
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@@ -119,3 +119,27 @@
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119
119
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120
120
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121
121
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### ご教授ください。
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122
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+
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123
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+
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124
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+
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125
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+
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126
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+
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127
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+
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128
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+
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129
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+
### 追記
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130
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+
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131
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+
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132
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+
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133
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+
```
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134
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+
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135
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+
SELECT
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136
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+
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137
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+
gender as g1
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138
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+
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139
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+
FROM users
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140
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+
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141
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+
where g1 is null;
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142
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+
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143
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+
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144
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+
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145
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+
```
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4
あああああ
test
CHANGED
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File without changes
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test
CHANGED
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@@ -100,4 +100,22 @@
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100
100
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101
101
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102
102
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103
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+
# 期待値
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104
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+
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105
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+
|id|gender|
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106
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+
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107
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+
|:--|:--:|
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108
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+
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109
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+
|11|null|
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110
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+
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111
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+
|12|null|
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112
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+
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113
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+
|13|null|
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114
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+
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115
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+
|14|null|
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116
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+
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117
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+
|15|null|
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118
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+
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119
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+
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120
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+
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103
121
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### ご教授ください。
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3
SELECT IF( gender = null, gender = 2, gender ) gender FROM users where gender = 2;
test
CHANGED
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File without changes
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test
CHANGED
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@@ -29,6 +29,22 @@
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29
29
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END as gender
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30
30
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31
31
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FROM users where gender = 2
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32
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+
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33
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+
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34
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+
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35
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+
SELECT
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36
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+
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37
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+
IF(
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38
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+
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39
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+
gender = null, gender = 2,
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40
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+
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41
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+
gender
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42
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+
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43
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+
) gender
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44
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+
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45
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+
FROM users
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46
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+
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47
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+
where gender = 2;
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32
48
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33
49
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34
50
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2
MySQL
test
CHANGED
|
@@ -1 +1 @@
|
|
|
1
|
-
SQLでのSELECTした値を検索する方法。
|
|
1
|
+
MySQLでのSELECTした値を検索する方法。
|
test
CHANGED
|
File without changes
|
1
sssss
test
CHANGED
|
File without changes
|
test
CHANGED
|
@@ -28,7 +28,7 @@
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28
28
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29
29
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END as gender
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30
30
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31
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-
FROM user where gender = 2
|
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31
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+
FROM users where gender = 2
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32
32
|
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33
33
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34
34
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