[英]Summing in mysql previous row with current
Need help to make query. 需要帮助进行查询。 I have table like this:
我有这样的表:
kli, akt, mes
'2', '2', '201209'
'2', '2', '201210'
'3', '3', '201211'
And I need a result table: 我需要一个结果表:
kli, akt, mes
'2', '2', '201209'
'4', '4', '201210'
'7', '7', '201211'
result tables sum by field mes, current and all previous rows 结果表按字段mes,当前行和所有先前行求和
试试下面的查询
SELECT SUM(b.kli),SUM(b.akt),a.mes FROM tableName a INNER JOIN tableName b ON a.mes >= b.mes GROUP BY a.mes
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