Update mysql table with data from another table

UPDATE book_details AS bd, book_details_old AS old
SET bd.live=1  
WHERE bd.isbn13=old.isbn13  
AND old.live=1;

Just a litle change and you got it:

UPDATE book_details
SET live = 1 
WHERE ISBN13 in (SELECT ISBN13 FROM book_details_old WHERE live = 1);

UPDATE table1 t1, table2 t2
SET t1.field_to_change = t2.field_with_data
WHERE t1.field1 = t2.field2;

To update a table from data in another table:

UPDATE table1, table2
SET table1.field1 = table2.field1
WHERE table1.id = table2.id;

For example:

UPDATE transaction, member
SET transaction.Memberid = member.memberId
WHERE transaction.CardId = member.CardId;

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