Question

我有两张表RecordMaster和Dummy

两者都有Mobile_Number和Insert_Date

等列

我想要像

这样的行

1）来自Dummy表我想获取Mobile_Number和Insert_Date与RecordMaster相比的行。

2）来自Dummy表我想获取那些与Mobile_Number相比Insert_Date和RecordMaster不同的行。

之后在1）条件中我想只获取那些Cpv_Status不为空的行。 (CPV_STATUS)是Dummy表中的一列..

请帮帮我........

Answer 1

满足您的1）和3）需求（可选择包括WHERE）。

SELECT d.* 
FROM Dummy d 
INNER JOIN RecordMaster r 
   ON r.mobile_number = d.mobile_number
   AND r.insert_date = d.insert_date
WHERE d.Cpv_Status IS NOT NULL

2

SELECT d.* 
FROM Dummy d
WHERE NOT EXISTS 
    (SELECT 1 
     FROM RecordMaster r 
     WHERE r.mobile_number = d.mobile_number
     AND r.insert_date = d.insert_date
    )

要插入这些：

INSERT INTO RecordMaster(mobile_number, insert_date)
  SELECT d.mobile_number, insert_date 
  FROM Dummy d
  WHERE NOT EXISTS 
    (SELECT 1 
     FROM RecordMaster r 
     WHERE r.mobile_number = d.mobile_number
     AND r.insert_date = d.insert_date
    )

Answer 2

以下查询将为您提供虚拟中与RecordMaster

中的记录匹配的所有记录

SELECT a.Mobile_Number,a.Insert_Date ,a.Cpv_Status
FROM RecordMaster a, Dummy b
WHERE a.Mobile_Number = b.Mobile_Number and a.Insert_Date = b.Insert_Date

以下查询将为您提供Dummy中RecordMadter

中没有匹配记录的记录

SELECT a.Mobile_Number,a.Insert_Date ,a.Cpv_Status
FROM Dummy a
WHERE STR(a.Mobile_Number)+STR(a.Mobile_Number) not in 
(SELECT STR(Mobile_Number)+STR(Insert_Date) FROM RecordMaster)

如果你需要将这两个结果合并到一个结果集中，那么就像这样使用UNION

SELECT a.Mobile_Number,a.Insert_Date ,a.Cpv_Status
FROM RecordMaster a, Dummy b
WHERE a.Mobile_Number = b.Mobile_Number and a.Insert_Date = b.Insert_Date

UNION

SELECT a.Mobile_Number,a.Insert_Date ,a.Cpv_Status
FROM Dummy a
WHERE STR(a.Mobile_Number)+STR(a.Mobile_Number) not in 
(SELECT STR(Mobile_Number)+STR(Insert_Date) FROM RecordMaster)

最后，您可以将所需的任何过滤器应用于最终结果集，如下所示：

select * from (

SELECT a.Mobile_Number,a.Insert_Date , a.Cpv_Status,a.Cpv_Status
FROM RecordMaster a, Dummy b
WHERE a.Mobile_Number = b.Mobile_Number and a.Insert_Date = b.Insert_Date

UNION

SELECT a.Mobile_Number,a.Insert_Date ,a.Cpv_Status
FROM Dummy a
WHERE STR(a.Mobile_Number)+STR(a.Mobile_Number) not in 
(SELECT STR(Mobile_Number)+STR(Insert_Date) FROM RecordMaster)

) where Cpv_Status is not null

从两个sql表中获取行

2 个答案: