Hello.
I've tried to use Character to fill "char" column, e.g. like in the next test:
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con.createStatement().execute("create table tst(tcol \"char\")");
PreparedStatement stmt = con.prepareStatement("insert into tst(tcol) values(?)");
stmt.setObject(1, 'c');
stmt.executeUpdate();
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and got
Exception in thread "main" org.postgresql.util.PSQLException: Can't infer the SQL type to use for an instance of java.lang.Character. Use setObject() with an explicit Types value to specify the type to use. at org.postgresql.jdbc2.AbstractJdbc2Statement.setObject(AbstractJdbc2Statement.java:1740)
with 8.3-603.jdbc4 driver.
May be it would be reasonable to treat Character like String of size 1?
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Best regards,
Vitalii Tymchyshyn