Prepared Statement Insert and null handling

Question

This is my statement and questions after the statement I will give my questions
StringBuffer sql = new StringBuffer();
sql.append("INSERT INTO CSD.TCLAIM");
sql.append(" (BENEFIT_REQUEST_ID,BRLI_NB,BRLI_VOID_IN,BILLING_END_DT,CLIENT_ID,");
sql.append(" CDH_BENEFICIARY_ID,PT_BENEFICIARY_ID)");
sql.append(" VALUES ");
sql.append("(" + claim.getBrt() + "," + claim.getBrli() + "," + claim.getBrliVoid() + "," + claim.getBillingEndDate() + "," + claim.getClientID() + ",");
sql.append(claim.getCdhBeneID() + "," + claim.getPtBeneID() +")");
String query = sql.toString();
PreparedStatement statement = cpConn.prepareStatement(query);
          statement.executeUpdate();
T
I am not using setString() or setInt(). The string columns (CDH_BENEFICIARY_ID) does not contain the single quote and insert fails. Is there any way to insert the single quote without calling a method like formatAsString() ?
Next question is column like CLIENT_ID which is defined in the database as integer can contain null. How do I handle those columns. Do I have to do anything special when I encounter a null in an int or double columns.
I am using JDBC 2.0 and UDB in SP environment. I have seen people wrap some columns to Wrapper class and do something like this while reading from database
claim.setClientID(new Integer(rs.getInt("CLIENT_ID")));
if (resultset.wasNull) {claim.setClientID(null)) };
Is there a beter way?
This will force us to define claim.client_id as Integer. I want to define client_id as int and handle null values.
          

Answer 1

Is there any way to insert the single quote You escape a single quote by replacing each occurrance with two single quotes. Presumably your strings already have single quotes around - if not you need to add them.
...can contain null. How do I handle those columns...update mytable set client_id=null where....
insert into mytable (client_id) values(null)
Is there a beter way?Not really.