Hello all,
We are using Postgres 8.0.3, and are attempting to upgrade to the JDBC 8.x drivers, but have discovered that PreparedStatements that used to work no longer do so. This is seen where the Java type does not match the database type, such as attempting to use preparedStatement.setString(1, “1”) where the database type is actually an integer (see stacktrace below). These worked fine on previous driver versions (such as 7.4).
If we set the protocolVersion=2, the jdbc 8.x drivers will work fine also, but I’m not so sure we really want to do that.
At first, I thought this was related to the use of server side prepares. But I have set the prepareThreshold=0 and verified it was being set by checking for it in the pgconnection and pgstatement, but it appears to have no effect.
Can anyone clarify what exactly has changed with prepared statements and why it used to work previously?
Thanks,
Byron
Exception in thread "main" java.sql.SQLException: ERROR: column "ticket" is of type integer but expression is of type character varying
at org.postgresql.core.v3.QueryExecutorImpl.receiveErrorResponse(QueryExecutorImpl.java:1471)
at org.postgresql.core.v3.QueryExecutorImpl.processResults(QueryExecutorImpl.java:1256)
at org.postgresql.core.v3.QueryExecutorImpl.execute(QueryExecutorImpl.java:175)
at org.postgresql.jdbc2.AbstractJdbc2Statement.execute(AbstractJdbc2Statement.java:389)
at org.postgresql.jdbc2.AbstractJdbc2Statement.executeWithFlags(AbstractJdbc2Statement.java:330)
at org.postgresql.jdbc2.AbstractJdbc2Statement.executeUpdate(AbstractJdbc2Statement.java:282)
at test.routescape.orm.util.DriverTest.main(DriverTest.java:49)