Question

我在Oracle中有以下脚本我不明白为什么我会

绑定变量“DeliveryDate变量”未声明

一切看起来都不错

VARIABLE RollingStockTypeId_Variable NUMBER := 1;
VARIABLE DeliveryDate_Variable DATE := (to_date('2010/8/25:12:00:00AM', 'yyyy/mm/dd:hh:mi:ssam'));

SELECT DISTINCT
       rs.Id,
       rs.SerialNumber,
       rsc.Name AS Category,
       (SELECT COUNT(Id) from ROLLINGSTOCKS WHERE ROLLINGSTOCKCATEGORYID = rsc.id) as "Number Owened",
       (SELECT COUNT(rs.Id)                 
       FROM ROLLINGSTOCKS rs       
       WHERE rs.ID NOT IN(  select RollingStockId 
                            from ROLLINGSTOCK_ORDER
                            WHERE :DeliveryDate_Variable  BETWEEN DEPARTUREDATE AND DELIVERYDATE)    
       AND rs.RollingStockCategoryId IN (Select Id 
                                        from RollingStockCategories 
                                        Where RollingStockTypeId = :RollingStockTypeId_Variable)
                                        AND rs.RollingStockCategoryId =     rsc.Id) AS "Number Available"
       FROM ROLLINGSTOCKS rs
       JOIN RollingStockCategories rsc ON rsc.Id = rs.RollingStockCategoryId
       WHERE rs.ID NOT IN(
                            select RollingStockId 
                            from ROLLINGSTOCK_ORDER
                            WHERE :DeliveryDate_Variable  BETWEEN DEPARTUREDATE AND DELIVERYDATE
                          )    
       AND rs.RollingStockCategoryId IN 
                          (
                            Select Id 
                            from RollingStockCategories 
                            Where RollingStockTypeId = :RollingStockTypeId_Variable 
                          )
      ORDER BY rsc.Name

Answer 1

这是SQL *的一个奇怪的怪癖加上the list of allowable datatypes for variables不包括DATE。

解决方案是将“date”变量声明为varchar2（9）或barchar2（18）（取决于我们是否要包含time元素），然后根据需要转换变量TO_DATE（）。

Answer 2

我管理找到问题，由于某种原因，甲骨文不喜欢投掷到目前为止的刺痛（在线）

这就是我改变它的方式

    VARIABLE RollingStockTypeId_Variable NUMBER; 
exec :RollingStockTypeId_Variable := 2;

VARIABLE DeliveryDate_Variable VARCHAR2(30); 
exec :DeliveryDate_Variable := '2010/8/25:12:00:00AM';

SELECT DISTINCT
       rs.Id,
       rs.SerialNumber,
       rsc.Name AS Category,
       (SELECT COUNT(Id) from ROLLINGSTOCKS WHERE ROLLINGSTOCKCATEGORYID = rsc.id) as "Number Owened",
       (SELECT COUNT(rs.Id)                 
       FROM ROLLINGSTOCKS rs       
       WHERE rs.ID NOT IN(  select RollingStockId 
                            from ROLLINGSTOCK_ORDER
                            WHERE (to_date(:DeliveryDate_Variable, 'yyyy/mm/dd:hh:mi:ssam'))  BETWEEN DEPARTUREDATE AND DELIVERYDATE)    
       AND rs.RollingStockCategoryId IN (Select Id 
                                        from RollingStockCategories 
                                        Where RollingStockTypeId = :RollingStockTypeId_Variable)
                                        AND rs.RollingStockCategoryId =     rsc.Id) AS "Number Available"
       FROM ROLLINGSTOCKS rs
       JOIN RollingStockCategories rsc ON rsc.Id = rs.RollingStockCategoryId
       WHERE rs.ID NOT IN(
                            select RollingStockId 
                            from ROLLINGSTOCK_ORDER
                            WHERE (to_date(:DeliveryDate_Variable, 'yyyy/mm/dd:hh:mi:ssam'))  BETWEEN DEPARTUREDATE AND DELIVERYDATE
                          )    
       AND rs.RollingStockCategoryId IN 
                          (
                            Select Id 
                            from RollingStockCategories 
                            Where RollingStockTypeId = :RollingStockTypeId_Variable 
                          )
      ORDER BY rsc.Name

Answer 3

我可能错了，但我认为你必须在没有函数的情况下初始化VARIABLES - 也就是说，我认为不允许使用TO_DATE。

我认为这是因为VARIABLE声明实际上不是SQL的一部分 - 它特定于SQLPlus，并且你不能在tw之间来回删除。

Answer 4

SQLPlus中声明的变量不允许使用date数据类型。您必须将变量创建为varchar，然后使用to_date。 SQLPlus variable syntax

为什么我得到绑定变量“DeliveryDate_Variable”未声明（Oracle全新）

4 个答案: