回答編集履歴
1
sample
test
CHANGED
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@@ -39,3 +39,47 @@
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のようなデータの持ち方をした方がよいでしょう
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# sample
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44
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45
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46
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47
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```SQL
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48
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49
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create table tbl(id int primary key auto_increment,name varchar(10),score int);
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50
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insert into tbl(name,score) values
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52
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('A',20),
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54
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55
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('A',35),
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56
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('A',50),
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58
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('A',86),
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60
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61
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('A',77),
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62
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63
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('B',20),
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64
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('B',35),
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('B',50),
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68
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('C',34),
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70
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('C',55),
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('C',12),
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75
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('C',45),
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77
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('C',75),
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('C',34);
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80
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81
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select name,group_concat(score) as scores from tbl group by name;
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82
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83
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84
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85
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```
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