SQL update from one Table to another based on a ID match

Question

This is the Sales_Import table, where the account number field needs to be updated:
LeadID AccountNumber

147 ********** 
150 ********** 
185 7006100100007267039

And this is the RetrieveAccountNumber table, where I need to update from:
LeadID AccountNumber

147 7006100100007266957 
150 7006100100007267039 

Answer 1

DECLARE @TB1 TABLE
        (
            No Int
            ,Name NVarchar(50)
        )

        DECLARE @TB2 TABLE
        (
            No Int
            ,Name NVarchar(50)
        )

        INSERT INTO @TB1 VALUES(1,'asdf');
        INSERT INTO @TB1 VALUES(2,'awerq');


        INSERT INTO @TB2 VALUES(1,';oiup');
        INSERT INTO @TB2 VALUES(2,'lkjhj');

        SELECT * FROM @TB1

        UPDATE @TB1 SET Name =S.Name
        FROM @TB1 T
        INNER JOIN @TB2 S
                ON S.No = T.No

        SELECT * FROM @TB1