回答編集履歴
2
sample2
test
CHANGED
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@@ -16,7 +16,7 @@
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16
16
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17
17
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18
18
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19
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-
# sample
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19
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+
# sample1
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20
20
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21
21
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とりあえずデイリーランキングのサンプルです
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22
22
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@@ -105,3 +105,27 @@
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105
105
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106
106
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107
107
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```
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108
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+
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109
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110
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111
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+
# sample2
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112
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113
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月で集計したランキング
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114
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115
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116
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117
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```SQL
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118
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119
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select t1.uid,t1.point,count(*) as rank
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120
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121
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from (select uid,sum(point) as point from score where d between '2017-03-01' and '2017-03-31' group by uid) as t1
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122
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123
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inner join (select uid,sum(point) as point from score where d between '2017-03-01' and '2017-03-31' group by uid) as t2
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124
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125
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on t1.point<=t2.point
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126
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127
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group by t1.uid
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128
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129
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order by rank;
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130
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131
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```
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1
sample
test
CHANGED
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@@ -13,3 +13,95 @@
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13
13
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その辺の仕様がわからないとどうしようもないですね。
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14
14
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15
15
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ちなみにランキングは定番の書き方があります。
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16
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+
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17
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+
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18
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19
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+
# sample
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20
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21
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とりあえずデイリーランキングのサンプルです
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22
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+
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23
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+
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24
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25
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- 元データ
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26
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27
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```SQL
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28
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+
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29
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create table score(id int primary key auto_increment,uid int,d date,point int,unique(uid,d));
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30
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+
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31
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insert into score(uid,d,point) values
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32
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33
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(1,'2017-03-01',100),
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34
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35
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(2,'2017-03-01',110),
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36
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37
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(3,'2017-03-01',120),
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38
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39
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(1,'2017-03-10',100),
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40
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41
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(2,'2017-03-10',200),
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42
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43
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(3,'2017-03-10',80),
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44
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45
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(4,'2017-03-10',50),
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46
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47
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(1,'2017-03-20',300),
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48
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49
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(2,'2017-03-20',200),
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50
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51
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(4,'2017-03-20',130),
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52
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53
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(5,'2017-03-20',120),
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54
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+
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55
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+
(6,'2017-03-20',120),
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56
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57
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(7,'2017-03-20',140);
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58
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59
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```
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60
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61
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62
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63
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- とりあえず3/20のランキング
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64
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65
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```SQL
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66
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+
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67
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select uid,point,(select count(*)+1 from score as t2 where t1.point<t2.point and t1.d=t2.d) rank
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68
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69
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from score as t1
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70
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71
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where d='2017-03-20'
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72
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73
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order by rank;
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74
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75
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```
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76
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+
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77
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+
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78
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+
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79
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- 3/10から3/20へのアップダウン
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80
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81
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```SQL
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82
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+
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83
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select t3.uid,t3.point,t3.rank,t4.point as prepoint,t4.rank as prerank
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84
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85
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,case when t4.rank is null then 'up' when t3.rank<t4.rank then 'up' when t3.rank=t4.rank then '-' else 'down' end as shift
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86
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+
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87
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from(select uid,point,(select count(*)+1 from score as t2 where t1.point<t2.point and t1.d=t2.d) rank
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88
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+
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89
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from score as t1
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90
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+
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91
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where d='2017-03-20') as t3
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92
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+
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93
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left join (
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94
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+
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95
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+
select uid,point,(select count(*)+1 from score as t2 where t1.point<t2.point and t1.d=t2.d) rank
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96
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+
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97
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from score as t1
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98
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+
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99
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where d='2017-03-10'
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100
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+
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101
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) as t4 on t3.uid=t4.uid
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|
102
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+
|
|
103
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+
order by rank;
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|
104
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+
|
|
105
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+
|
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106
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+
|
|
107
|
+
```
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