Why does PreparedStatement.setNull requires sqlType?

Question

1. According to the java docs of PreparedStatement.setNull: \"Note: You must specify the parameter\'s SQL type\". What is the reason that the method requires the SQL t

Answer 1

JDBC drivers appear to be moving away from setNull. See Add support for setObject(, null).

My list of databases supporting the more logical behaviour is:

1. Oracle
2. MySQL
3. Sybase
4. MS SQL Server
5. HSQL

My list of databases NOT supporting this logical behaviour is:

1. Derby Queries with guarded null Parameter fail
2. PostgreSQL Cannot pass null in Parameter in Query for ISNULL Suggested solution