Mysql c updating result sets
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UPDATE is a DML statement that modifies rows in a table. The WHERE clause specifies which record(s) that should be updated.To check for an empty resultset you can do: Result Set rs = ...; if (rs.next()) else rs.close(); Using rs.next() has been standard in JDBC from the beginning. You will notice that all of the fields are prefixed with the table names (ie: orders.order_id).) for retrieving column values from the current row. For maximum portability, result set columns within each row should be read in left-to-right order, and each column should be read only once.