Question

我的表cust_shipmentdate_awb和comp_shipdate_awb中有两个字段。我试图写一个CASE语句，它应该检查两个字段cust_shipmentdate_awb和comp_shipdate_awb是null还是空。如果两者都为空，则将结果显示为“待定”。如果任何一个字段不为空，则它应显示为“已完成”。如果同时输入两个字段，则它应显示为“已完成”。我已经尝试过以下CASE声明。但是当输入两个字段数据时它显示为挂起。我试图按照以下数据来实现。

============================================================
cust_shipmentdate_awb | comp_shipdate_awb | shipment_status
============================================================

   02-03-2016         |                   | Completed
                      | 09-08-2016        | Completed
   NULL               | NULL              | Pending
   01-06-2016         | 09-08-2016        | Completed
============================================================

CASE    
    When cust_shipmentdate_awb Is Null Or comp_shipdate_awb = '' Then 'Pending'   
    Else 'Completed' End AS shipment_status

Answer 1

尝试使用AND运算符，并检查两个字段是否为null和空（＆＃39;＆＃39;）：

CASE    
    When        (cust_shipmentdate_awb Is Null OR cust_shipmentdate_awb = '') 
            AND (comp_shipdate_awb Is Null OR comp_shipdate_awb = '') Then 'Pending' 
    Else 'Completed' End AS shipment_status

CASE语句检查是否有任何字段为NULL

1 个答案: