Sql query with bind variables execution in Jdbc

Question

I have a sql query like this.

 select \"DEPT\".\"DEPTNO\" as \"DEPTNO1\",
\"DEPT\".\"DNAME\" as \"DNAME1\",
\"DEPT\".\"LOC\" as \"LOC1\",
\"EMP\".\"COMM\" as         


        

Answer 1

The variable DeptNo must be bound to a value before you execute the statement like below.

DriverManager.getConnection(DB_CONNECTION, DB_USER, DB_PASSWORD);
Statement statment = dbConnection.createStatement();
//Bind deptno to a value
statment.setParameter("DeptNo",5);
result = statment.execute(query);    

You must set values for all the variables in your prepared statement othwerise you cannot execute the statement. If you receive the query to execute itself as an input then you should also get the parameters and its values also as input. Something like below

public  executeQuery(String queryStr, Map params) {
     //Code to create connecitno and statment from queryStr.
     //Bind deptno to a value
     for(int i=0;i