Question

我目前正在尝试将以下MS SQL查询转换为Informix，但我不确定如何。

SELECT     NumPlan.DNOrPattern, Device.Name, DeviceNumPlanMap.Display, TypeModel.Name AS Model, DeviceNumPlanMap.NumPlanIndex, 
                      Device.AddOnModules
FROM         DeviceNumPlanMap INNER JOIN
                      Device ON DeviceNumPlanMap.fkDevice = Device.pkid INNER JOIN
                      NumPlan ON DeviceNumPlanMap.fkNumPlan = NumPlan.pkid INNER JOIN
                      TypeModel ON Device.tkModel = TypeModel.Enum
WHERE     (TypeModel.Enum <> '10') AND (TypeModel.Enum <> '12') AND (TypeModel.Enum <> '120') AND (TypeModel.Enum <> '90') AND 
                      (TypeModel.Enum <> '73') and (TypeModel.Enum <> '72') and (TypeModel.Enum <> '80') AND (DeviceNumPlanMap.NumPlanIndex = '1') ORDER BY NumPlan.DNOrPattern, DeviceNumPlanMap.NumPlanIndex

有关如何将此转换为Informix查询的任何帮助都将非常感激。

Answer 1

在任一数据库中，我都会将此查询编写为：

SELECT np.DNOrPattern, d.Name, npm.Display, tm.Name AS Model, npm.NumPlanIndex, 
       d.AddOnModules
FROM DeviceNumPlanMap npm INNER JOIN
     Device d
     ON npm.fkDevice = d.pkid INNER JOIN
     NumPlan p
     ON npm.fkNumPlan = p.pkid INNER JOIN
     TypeModel tm
     ON d.tkModel = tm.Enum
WHERE tm.Enum NOT IN ('10', '12', '120', '90', '73', '72', '80') AND   
      npm.NumPlanIndex = '1'
ORDER BY np.DNOrPattern, npm.NumPlanIndex;

如果Enum或NumPlanIndex的数据类型不是字符串，则删除单引号。

这应该适用于任一数据库。但是，我认为你原来也应该这样。

将MS SQL查询转换为Informix查询

1 个答案: