简短的回答,是的
更长的答案,你可以使用一个变量来计算它,因为它向下迭代行,即
SELECT
`table`.`ID`,
`table`.`In`,
`table`.`Out`,
@Balance := @Balance + `table`.`In` - `table`.`Out` AS `Balance`
FROM `table`, (SELECT @Balance := 0) AS variableInit
ORDER BY `table`.`ID` ASC
(SELECT @Balance：= 0)AS variableInit确保在启动之前将@Balance初始化为0.然后对于每一行,它将@Balance设置为@Balance In-Out,然后输出计算出的值.
另外值得确定ORDER是否一致,否则Balance会根据返回行的顺序而有所不同.例如,如果您想将其重新排序到前面,则可以将其用作子查询,然后外部查询处理计算值,从而确保平衡保持正确,即
SELECT
`balanceCalculation`.`ID`,
`balanceCalculation`.`In`,
`balanceCalculation`.`Out`,
`balanceCalculation`.`Balance`
FROM (
SELECT
`table`.`ID`,
`table`.`In`,
`table`.`Out`,
@Balance := @Balance + `table`.`In` - `table`.`Out` AS `Balance`
FROM `table`, (SELECT @Balance := 0) AS variableInit
ORDER BY `table`.`ID` ASC
) AS `balanceCalculation`
ORDER BY `balanceCalculation`.`ID` DESC