如果值與另一個表中的記錄值匹配，則更新表記錄

Question

我有兩張桌子

Table1

Date       Number      Name      Memo          PaidAmount
2012-02-13 122361      John Doe  some memo     245.25
2014-06-29 146352      Steve Doe another memo  360.34


Table2

Date       FileNumber  Name      Address       Price     Status
2012-02-13 122361PH    John Doe  some memo     245.25    Pending
2014-06-29 146352AP    Steve Doe another memo  360.34    Pending

我只需要在FileNumbers的前六位與“ Table1”中的“ Number”的前六位匹配的記錄中，將“ Table2”中的記錄的狀態從“待處理”更新為“已關閉”。

這就是我的腦海...

UPDATE Table2
SET Status = Closed
Where Table2.FileNumber (first six digits) = Table1.Number (first six digits)

Answer 1

這就是您可以做到的。

    update 
    Table2
    inner join
    Table1 on SUBSTRING(Table1.Number,1,6) = SUBSTRING(Table2.FileNumber,1,6)
    SET Table2.Status = 'Closed'

Answer 2

UPDATE Table2 
INNER JOIN Table1 ON substr( Table2.number, 1, 6 ) = substr( Table1.number, 1, 6 )
SET STATUS = 'Closed'