sql - TSQL How to update column from row in same table? -

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Say I have this table schema.

ID ADNO Amount

I Obtain This Data 

  ID ADNO Zodiac 1 1020 100.00 2 2040 50.00

How do I write a TSQL update query to update the Exton 1020 Amount column with the amount? From 2040 ??

Malcolm

Use the nested selection:

updated tablanem set zodiac = (where the tablainem from ID number = 2), where AccNo = 1200

Obviously if your situation is different, then suit you, eg if AccNo unique , You can use it.


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