Question

For standard queries I have not had a problem with this. I simply:

ResultSet rs = stmt.executeQuery("SELECT a, b FROM table_name");
ResultSetMetaData rsMetaData = rs.getMetaData();
int numberOfColumns = rsMetaData.getColumnCount();

for (int i = 1; i < numberOfColumns + 1; i++) {
    String fieldName = rsMetaData.getColumnName(i);
    System.out.print(fieldName + ",  ");
}

But the moment I assign a field name to another name, i.e.

ResultSet rs = stmt.executeQuery("SELECT a AS foo, b AS bar FROM table_name");

It throws an error because fields a and b aren’t found.

How should I cater to this? Thanks

Answer 1

There is a difference between column name and column label. The methods in ResultSet expect column labels. So you should use the method ResultSetMetaData.getColumnLabel instead of ResultSetmetaData.getColumnName.