Topic: How to refer columns with same name in jdbc

Question

I have a join statement :
Select a.col1, a.col2, b.col3, b.col2 from TABLE1 a, TABLE2 b where a.col1 = b.col1
how do I refer with same column name suppose I want to get b.col2
I get error when I try rs.getString("b.col2") or
rs.getString("TABLE2.COL2")..
note I donot want positional retrieval i.e rs.getString(x) , where x is column number.
can you suggest how to refer the b.col2 uniquely.

Answer 1

Select a.col1, a.col2, b.col3, b.col2 from TABLE1 a,
TABLE2 b where a.col1 = b.col1You can use a column alias, like below. They "as" keyword isn't always necessary, depends on your database.
Select
    a.col1 as a_col1,
    a.col2 as a_col2,
    b.col3 as b_col3,
    b.col2 as b_col2
from
    TABLE1 a,
    TABLE2 b
where
    a.col1 = b.col1