Passing NULL to the database

Hi guys,
I'm having a java application which uses a Stored Procedure in Oracle to insert values in a table. I'm trying to pass null to a float column. But instead of null it gets stored as 0. Can anyone throw light in this issue as to how to pass null as a value to the Stored Proc.
Thanks,
Arjun

USE :
CallableStatement cst = connection.prepareCall(.....);
cst.setNull(parameterIndex, sqlType);

see PreapredStatement.setNull() :-
public void setNull(int parameterIndex, int sqlType)
throws SQLException
Sets the designated parameter to SQL NULL.
Note: You must specify the parameter's SQL type.
Parameters:
parameterIndex - the first parameter is 1, the second is 2, ...
sqlType - the SQL type code defined in java.sql.Types
Throws:
SQLException - if a database access error occurs

Hi,

Originally posted by shilpa kulkarni:
USE :
CallableStatement cst = connection.prepareCall(.....);
cst.setNull(parameterIndex, sqlType);

see PreapredStatement.setNull() :-
public void setNull(int parameterIndex, int sqlType)
throws SQLException
Sets the designated parameter to SQL NULL.
Note: You must specify the parameter's SQL type.
Parameters:
parameterIndex - the first parameter is 1, the second is 2, ...
sqlType - the SQL type code defined in java.sql.Types
Throws:
SQLException - if a database access error occurs

I used the aforesaid method to set null. But it throwed an SQLException saying "column type error" or something of that sort which i could only perceive as the datatype didn't match. Hence i used the setFloat method(since the column is a float) and passed null as parameter. know what happened. It got stored as 0.

Thanks,
Arjun

Try using the same type as has been specified in the stored procedure.
For eg. if procedure is defined as :
PROCEDURE ins(p_order_id IN VARCHAR2,
p_item_id IN VARCHAR2,
p_description IN VARCHAR2,
p_price IN NUMBER,
p_quantity IN NUMBER) IS......
When setting the null value for price use :
cst.setNull(4, java.sql.Types.NUMERIC);