回答編集履歴
2
そのままにする部分が抜けていたので追加
test
CHANGED
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@@ -84,7 +84,11 @@
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84
84
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85
85
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SET
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86
86
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87
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+
T1.ID = MID(T1.ID, 1, 1)
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88
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+
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87
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-
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89
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+
+ MID('abcdefghijklmnopqrstuvwxyz', T2.cnt, 1)
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90
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+
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91
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+
+ MID(T1.ID, 3, 1)
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88
92
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89
93
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WHERE T1.ID = T2.ID
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90
94
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@@ -97,3 +101,13 @@
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97
101
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98
102
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99
103
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UPDATEのFROM副問い合わせはすっかりSQLServerのノリで書いてましたf(^-^;
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104
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+
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105
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+
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106
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107
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---
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108
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109
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110
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+
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111
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+
追記
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112
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+
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113
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+
そのまま残すべきところを忘れていたので追加しました
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1
指摘を受けて修正
test
CHANGED
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@@ -35,3 +35,65 @@
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35
35
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36
36
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37
37
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```
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38
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+
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39
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+
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40
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+
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41
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+
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42
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43
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---
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44
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+
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45
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+
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46
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+
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47
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+
KotoriMaturiさんの指摘を受けて修正しました
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48
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+
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49
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+
(GROUP BYもぬけてましたし)
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50
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+
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51
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52
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53
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+
```SQL
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54
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+
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55
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UPDATE
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56
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+
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57
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+
sampleTable T1
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58
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+
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59
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, (
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60
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+
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61
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SELECT
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62
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+
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63
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+
A.ID
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64
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+
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65
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+
, A.userID
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66
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+
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67
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, count(*) + 1 AS cnt
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68
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+
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69
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FROM sampleTable A
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70
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+
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71
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JOIN sampleTable B
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72
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+
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73
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ON A.ID = B.ID
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74
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+
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75
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+
AND A.userID > B.userID
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76
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+
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77
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+
GROUP BY
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78
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+
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79
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+
A.ID
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80
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+
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81
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+
, A.userID
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82
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+
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83
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+
) T2
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84
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+
|
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85
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+
SET
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86
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+
|
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87
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+
T1.ID = MID('abcdefghijklmnopqrstuvwxyz', T2.cnt, 1)
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88
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+
|
|
89
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+
WHERE T1.ID = T2.ID
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90
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+
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91
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+
AND T1.userID = T2.userID
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92
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+
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93
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+
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94
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+
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95
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+
```
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96
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+
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97
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+
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98
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+
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99
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+
UPDATEのFROM副問い合わせはすっかりSQLServerのノリで書いてましたf(^-^;
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