About the Preparedstatement.addbatch () method

Statement and PreparedStatement The difference is not much nonsense, directly said PreparedStatement the most important addbatch () structure of the use.

1. Establish the link, (telephone dialing)

Connection Connection =getconnection ();

2. Do not automatically Commit (melon seeds are not one to eat, all stripped open on the table, and then licked)

Connection.setautocommit (FALSE);

3. Precompiled SQL statements, only compile one time oh, high efficiency ah. (Invent a way to peel the melon seeds, don't always want to peel the melon seeds in the future.)
PreparedStatement statement = connection.preparestatement ("INSERT into TableX VALUES (?,?)");

4. One to peel and then put on the table.

Record 1
Statement.setint (1, 1);
Statement.setstring (2, "Cujo");
Statement.addbatch ();

Record 2
Statement.setint (1, 2);
Statement.setstring (2, "Fred");
Statement.addbatch ();

Record 3
Statement.setint (1, 3);
Statement.setstring (2, "Mark");
Statement.addbatch ();

Execute the above 3 statements in bulk. Swallow it, it's cool.
int [] counts = Statement.executebatch ();

Commit it to swallow, into the belly (DB) inside
Connection.commit ();

Stmt.addbatch ("update TABLE1 set topic =" Midsummer Speech foot Health 1 "where id=" 3407 ");
Stmt.addbatch ("update TABLE1 set topic =" Summer heat stroke prevention meal 1 "where id=" 3408 ");
Stmt.addbatch ("INSERT into TABLE1 VALUES (" 11 "," 12 "," 13 "," "", ")");
Stmt.addbatch ("INSERT into TABLE1 VALUES (" 12 "," 12 "," 13 "," "", ")");
Stmt.addbatch ("INSERT into TABLE1 VALUES (" 13 "," 12 "," 13 "," "", ")");
Stmt.addbatch ("INSERT into TABLE1 VALUES (" 14 "," 12 "," 13 "," "", ")");
Stmt.addbatch ("INSERT into TABLE1 VALUES (" 15 "," 12 "," 13 "," "", ")");
Stmt.addbatch ("INSERT into TABLE1 VALUES (" 16 "," 12 "," 13 "," "", ")");
Stmt.addbatch ("INSERT into TABLE1 VALUES (" 17 "," 12 "," 13 "," "", ")");
Stmt.addbatch ("INSERT into TABLE1 VALUES (" 18 "," 12 "," 13 "," "", ")");

int [] Updatecounts=stmt.executebatch ();
Cn.commit ();

For example:

    public static void Exectebatch (Connection conn) throws exception{
     & nbsp;  String sql1 = "Delete from student where id = 3";
        String sql2 = "Delete from student where id = 5";
        String sql3 = "Delete from student where id = 6";
        String sql4 = "Delete from student where id = 7";
        PreparedStatement pstmt = conn.preparestatement (SQL1);
        pstmt.addbatch ();
        Pstmt.addbatch (SQL2);
        Pstmt.addbatch (SQL3);
        Pstmt.addbatch (SQL4);
        pstmt.executebatch ();
   };