Re: Problem with DATE

  Try connecting to PostgreSQL using the version 2 protocol (older version).
    jdbc:postgresql:...?protocolVersion=2

  I've had (different) problems with dates in PostgreSQL due to the
fact, that PostgreSQL has two date formats (with and without a Time
Zone), and there are some shenanigans detecting what type the date
would have to be, and ends up using neither, blah blah (can't
remember).


2015-01-06 14:21 GMT+02:00 Vinayak <vinpokale@gmail.com>:
> Hi,
> The following java code works fine using Oracle jdbc driver.
> It works fine in PostgreSQL for BigDecimal and String etc. but for date it
> throws error.
>
> example:
> ps = conn.prepareStatement("SELECT ?, ?, ?,?");
> ps.setObject(1, new String("1.2"));
> ps.setObject(2, new BigDecimal("1.2"));
> ps.setObject(3, new String("2014-01-11 33:22:11"));
> ps.setObject(4, Date.valueOf("2014-01-11"));
>
> org.postgresql.util.PSQLException: ERROR: could not determine data type of
> parameter $4
>         at
> org.postgresql.core.v3.QueryExecutorImpl.receiveErrorResponse(QueryExecutorImpl.java:2157)
>         at
> org.postgresql.core.v3.QueryExecutorImpl.processResults(QueryExecutorImpl.java:1886)
>         at
> org.postgresql.core.v3.QueryExecutorImpl.execute(QueryExecutorImpl.java:255)
>         at
> org.postgresql.jdbc2.AbstractJdbc2Statement.execute(AbstractJdbc2Statement.java:559)
>         at
> org.postgresql.jdbc2.AbstractJdbc2Statement.executeWithFlags(AbstractJdbc2Statement.java:417)
>         at
> org.postgresql.jdbc2.AbstractJdbc2Statement.executeQuery(AbstractJdbc2Statement.java:302)
>         at TestSetDate.main(TestSetDate.java:39)
>
> The above problem is solved after typecasting the 4th argument to date.
> ps = conn.prepareStatement("SELECT ?, ?, ?,?::date");
> OR
> ps = conn.prepareStatement("SELECT ?, ?, ?,date(?)");
>
> Is there any possibility to add something like PGdate in PostgreSQL jdbc
> driver?
> so that during migration from Oracle to PostgreSQL,there is no need to edit
> the java code.
>
> Regards,
> Vinayak
>
>
>
> -----
> Regards,
> Vinayak,
>
> --
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>
>
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