I faced a problem when I import metadata from JDBC database, the same filed names in other tables are renamed,

ie. if there is a same column name in 3 tables, table1.col, table2.col, table3.col, when metadata imported, the names become table1.col, table2.col1, table3.col2. Does anyone know how can I do to keep the original name of table2 and table3 ?

Below is the screenshot of such problem