私は今バッチを使用しています:
String query = "INSERT INTO table (id, name, value) VALUES (?, ?, ?)";
PreparedStatement ps = connection.prepareStatement(query);
for (Record record : records) {
ps.setInt(1, record.id);
ps.setString(2, record.name);
ps.setInt(3, record.value);
ps.addBatch();
}
ps.executeBatch();
上記のコードが次のコードと同等かどうか疑問に思っています。そうでない場合、どちらが速いですか?
String query = "INSERT INTO table (id, name, value) VALUES ";
for (Record record : records) {
query += "(" + record.id + ",'" + record.name + "'," + record.value + "),";
}
query = query.substring(1, query.length() - 1);
PreparedStatement ps = connection.prepareStatement(query);
ps.executeUpdate();