JDBC Batch processing ExecuteBatch

JDBC runs the SQL declaration. There are two processing interfaces. A preparedstatement,statement, general program JDBC How many still compare PreparedStatement

Just run the batch, PreparedStatement less statement

PS = conn.preparestatement (SQL);

for (int i = 0;i<10;i++) {

Ps.setstring (1, "1");

PreparedStatement Batch processing mode one

Ps.addbatch ();

}

PreparedStatement Batch processing mode two

Ps.addbatch ("Static SQL");

Ps.executebatch ();

This is a normal operation.

But putting the preparedstatement in it doesn't work. Below:

for (int i = 0;i<10;i++) {

PS = conn.preparestatement (SQL);

Ps.setstring (1, "1");

Ps.addbatch ();

}

Ps.executebatch ();

statement is suitable for loop assignment to SQL, below the code:

Statement st = Conn.createstatement ();

for (int i = 0;i<10;i++) {

St.addbatch ("Static SQL .....");

}

St.executebatch ();

This is the full statement of the normal operation.

Summary: The cause of this is

Statement st = Conn.createstatement (); It's not possible to put SQL statements here.

PS = conn.preparestatement (SQL); This must be the initial SQL statement

The JDBC batch cannot increment the SELECT statement, otherwise it throws an exception:

Java.sql.BatchUpdateException:Can not issue SELECT via Executeupdate ().
At Com.mysql.jdbc.StatementImpl.executeBatch (statementimpl.java:1007)

JDBC Batch processing ExecuteBatch