poblem与查询获取差异

sauutmhj 于 2021-06-21 发布在 Mysql

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我使用这个查询来显示saldo列以及发票和付款值。工作很好，但如果我没有发票，但我有一个付款，我可以看到它，直到我添加一个发票。我怎样才能纠正它？

select B.razonsocial as Empresa, Facturas , 
IFNULL(pay,0) as Pagos, (Facturas - IFNULL(pay,0)) Saldo 
FROM (select TblFacturasCompras.id_proveedor, TblProveedores.razonsocial, 
SUM(case when TblFacturasCompras.tipocomprobante = 'A' or TblFacturasCompras.tipocomprobante='B' or TblFacturasCompras.tipocomprobante = 'NDA' or TblFacturasCompras.tipocomprobante = 'NDB'  or TblFacturasCompras.tipocomprobante = 'C'  or TblFacturasCompras.tipocomprobante = 'NDC' or TblFacturasCompras.tipocomprobante = 'X' then TblFacturasCompras.total else -TblFacturasCompras.total end)  as Facturas 
from TblFacturasCompras left join TblProveedores on TblFacturasCompras.id_proveedor = TblProveedores.id group by TblProveedores.id) A 
LEFT JOIN (select TblProveedores.id, TblProveedores.razonsocial, SUM(TblRecibosCompras.total) as Pay from 
TblProveedores left join TblRecibosCompras on TblRecibosCompras.id_proveedor = TblProveedores.id  group by TblProveedores.id) B ON A.id_proveedor = B.id 
where B.razonsocial <> '' order by B.razonsocial Asc

mysql relation payment invoices

来源：https://stackoverflow.com/questions/52371507/poblem-with-query-to-get-diference

1条答案

按热度按时间

inb24sb21#

您正在where条件中使用左连接所涉及的列

where B.razonsocial <> ''

这是一个内部连接，请尝试将条件添加到相关的on子句中

select B.razonsocial as Empresa
    , Facturas
    , IFNULL(pay,0) as Pagos
    , (Facturas - IFNULL(pay,0)) Saldo 
    FROM (  
        select TblFacturasCompras.id_proveedor
            , TblProveedores.razonsocial
            , SUM(case when 
                        TblFacturasCompras.tipocomprobante = 'A' 
                        or TblFacturasCompras.tipocomprobante='B' 
                        or TblFacturasCompras.tipocomprobante = 'NDA' 
                        or TblFacturasCompras.tipocomprobante = 'NDB'  
                        or TblFacturasCompras.tipocomprobante = 'C'  
                        or TblFacturasCompras.tipocomprobante = 'NDC' 
                        or TblFacturasCompras.tipocomprobante = 'X' 
                    then TblFacturasCompras.total 
                    else -TblFacturasCompras.total end)  as Facturas 
        from TblFacturasCompras 
        left join TblProveedores on TblFacturasCompras.id_proveedor = TblProveedores.id 
        group by TblProveedores.id
    ) A 
    LEFT JOIN (
        select TblProveedores.id
            , TblProveedores.razonsocial
            , SUM(TblRecibosCompras.total) as Pay 
        from TblProveedores 
        left join TblRecibosCompras on TblRecibosCompras.id_proveedor = TblProveedores.id  
        group by TblProveedores.id
    ) B ON A.id_proveedor = B.id and  B.razonsocial <> '' 
    order by B.razonsocial Asc

还有一个建议，你可以用一个in子句而不是几个or子句

select B.razonsocial as Empresa
    , Facturas
    , IFNULL(pay,0) as Pagos
    , (Facturas - IFNULL(pay,0)) Saldo 
    FROM (  
        select TblFacturasCompras.id_proveedor
            , TblProveedores.razonsocial
            , SUM(case when 
                  TblFacturasCompras.tipocomprobante IN ('A','B','NDA','NDB','C','NDC','X') 
                    then TblFacturasCompras.total 
                    else -TblFacturasCompras.total end)  as Facturas 
        from TblFacturasCompras 
        left join TblProveedores on TblFacturasCompras.id_proveedor = TblProveedores.id 
        group by TblProveedores.id
    ) A 
    LEFT JOIN (
        select TblProveedores.id
            , TblProveedores.razonsocial
            , SUM(TblRecibosCompras.total) as Pay 
        from TblProveedores 
        left join TblRecibosCompras on TblRecibosCompras.id_proveedor = TblProveedores.id  
        group by TblProveedores.id
    ) B ON A.id_proveedor = B.id and  B.razonsocial <> '' 
    order by B.razonsocial Asc

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poblem与查询获取差异

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