Question

我正在尝试编写一个MySQL查询，但我很难写它，它涉及3个表!!!

table 1 - Invoice table - Has a client id, credit id, invoice id and commission subtotal
table 2 - Credits table - Has a client id, credit id and commission amount (same as commission subtotal)
table 3 - Agents table - Has a client id and agent id

我正在尝试根据发票ID上每个信用ID的信用表创建代理佣金金额列表。

我真的希望这是有道理的。

这就是我的目标：

select cfi.commissionamount
        from invoice ii
        inner join clientagent cli
        on ii.client = cli.clientid
        inner join clientagent cl
        on ii.client = cl.clientid
        left outer join creditfee cfi
        on cfi.client = ii.client
        and (cfi.issuedate BETWEEN ii.startdate AND ii.enddate)
        where ii.invoiceid = cfi.invoiceid
        and cli.clientagentid = cl.clientagentid

但唯一可以返回的是我的发票表中的一堆随机行....有关如何解决此问题的任何想法？

任何正确方向的帮助或步骤都将是一个巨大的帮助。

Answer 1

我认为您正在寻找此问题，但您需要回答上述问题，以便我们为您提供更多帮助，并提供准确的表格结构，因为您的单元格名称中包含空格。

SELECT cli.agentid, SUM(cfi.commissionamount)
    FROM invoice AS ii
        INNER JOIN clientagent AS cli
            ON ii.clientid = cli.clientid
        LEFT OUTER JOIN creditfee AS cfi
            ON cfi.clientid = ii.clientid AND (cfi.issuedate BETWEEN ii.startdate AND ii.enddate)
        WHERE ii.invoiceid = cfi.invoiceid AND cli.clientagentid = cl.clientagentid
        GROUP BY ii.clientid

编写涉及3个表的MySQL查询

1 个答案: