Question

我试图从三个表中选择数据，表1中有id号和时间戳，表2中有id号，数量和描述，表3中有id号和状态。

我有下表：

TABLE ordenes
|id_orden|fecha_registro
|   1    |15-Oct-2016 12:00:05
|   2    |15-Oct-2016 12:35:55
|   3    |15-Oct-2016 12:42:20



TABLE pre_ordenes
|id_orden|cantidad|descripcion
|    1   |    1   |cd adele
|    1   |    2   |cd sia
|    2   |    2   |cd rihana
|    2   |    2   |cd rita
|    2   |    2   |cd adele
|    3   |    2   |cd sia
|    3   |    2   |cd rihana
|    3   |    2   |cd adele
|    3   |    2   |cd marhia

TABLE estado_orden/
|id_orden|tipo_estado
|    1   |     1
|    1   |     2
|    1   |     3
|    1   |     4
|    1   |     5
|    2   |     1
|    2   |     2
|    2   |     3
|    2   |     4
|    3   |     1
|    3   |     2
|    3   |     3

我可以获得这个吗？

|id_orden|fecha_registro       |cantidad|descripcion
|    2   |15-Oct-2016 12:35:55 |    1   |cd rihana
|    2   |15-Oct-2016 12:35:55 |    1   |cd rita
|    2   |15-Oct-2016 12:35:55 |    1   |cd adele
|    3   |15-Oct-2016 12:42:20 |    1   |cd sia
|    3   |15-Oct-2016 12:42:20 |    1   |cd rihana
|    3   |15-Oct-2016 12:42:20 |    1   |cd adele
|    3   |15-Oct-2016 12:42:20 |    1   |cd marhia

这是因为id_orden = 1有tipo_estado = 5而id_orden 2和3没有5作为tipo_estado

Answer 1

    select o.id_orden, o.fecha_registro, p.cantidad, p.descripcion
    from (ordenes o
    left join pre_ordenes p
    on o.id_orden = p.id_orden)
    join estado_orden e
    on o.id_orden = e.id_orden
    where e.tipo_estado <> 5

或尝试以下替代

    select o.id_orden, o.fecha_registro, p.cantidad, p.descripcion
    from (ordenes o
    left join pre_ordenes p
    on o.id_orden = p.id_orden)
    where o.id_orden in (select e.id_orden
                         from estado_orden e
                         where e.tipo_estado <> 5)

从具有maximo＆lt;＆gt;的三个表中选择数据。五

1 个答案: