如何解决在mysql中按范围分组
MysqL作为关键字的分隔符使用反引号“`”,而不是方括号(例如sql server)
解决方法
Table:
new_table
user_number | diff
2 | 0
1 | 28
2 | 32
1 | 40
1 | 53
1 | 59
1 | 101
1 | 105
2 | 108
2 | 129
2 | 130
1 | 144
|(result)
v
range | number of users
0-20 | 2
21-41 | 3
42-62 | 1
63-83 | 2
84-104 | 1
105-135| 0
136-156| 3
select t.range as [range],count(*) as [number of users]
from (
select case
when diff between 0 and 20 then ' 0-20'
when diff between 21 and 41 then ' 21-41'
when diff between 42 and 62 then ' 42-62'
when diff between 63 and 83 then ' 63-83'
when diff between 84 and 104 then ' 84-104'
when diff between 105 and 135 then ' 105-135'
else '136-156'
end as range
from new_table) t
group by t.diff
Error:
You have an error in your SQL syntax,near '[range],count(*) as [number of users]
from (
select case
when' at line 1
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