Hi all, I am writing a Java program using postgres. When I run my program, I got the following error message:
Exception in thread "main" org.postgresql.util.PSQLException: Can't infer the SQL type to use for an instance of org.postgresql.jdbc4.Jdbc4ResultSet. Use setObject() with an explicit Types value to specify the type to use. at org.postgresql.jdbc2.AbstractJdbc2Statement.setObject(AbstractJdbc2Statement.java:1772) at org.postgresql.jdbc3g.AbstractJdbc3gStatement.setObject(AbstractJdbc3gStatement.java:37) at org.postgresql.jdbc4.AbstractJdbc4Statement.setObject(AbstractJdbc4Statement.java:46) at Cracking.testMethod(Cracking.java:619) at GetConnection.main(GetConnection.java:97)
My code that caused this problem is:
Statement st = c.createStatement(); ResultSet r = st.executeQuery("select unnest(col0) from relation2_col1 where keyValue<500"); PreparedStatement sql = c.prepareStatement( "SELECT col1 FROM relation2 WHERE col0 IN ?"); sql.setObject(1, r); ResultSet result = sql.executeQuery();
I am using Eclipse, and there is no warning for this code. Can't a result set be used in another query? How do I correct it?
