尝试从Java应用程序插入此dateTime有什么问题？

Question

For this Java code:

stmt.addBatch(
                "INSERT INTO Bills (BillDateTime, Table, Item, NoAttended, Service, Payment, Total) " +
                "VALUES('" + billDateTime +  "', " + Integer.parseInt(createTableNumberOutput.toString()) +  ", '" + null + "', '" 
                + Integer.parseInt(createGuestNumberOutput.toString()) + "', " + "5" +  ", '" + 
                createPaymentTypeOutput.toString() + "', '" +  "')");

I get the following error:

java.sql.BatchUpdateException: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'Table, Item, NoAttended, Service, Payment, Total) VALUES('2012-03-26 11:15:8', 1' at line 1

The issue is not apparent to me, as MySql requires the format 'YYYY-MM-DD HH:MM:SS' for dateTime, which I have, right?

Answer 1

Table is reserved keyword in mysql . use backticks( ` ) around it.

Like below:

stmt.addBatch("INSERT INTO Bills (BillDateTime,`Table`, Item,NoAttended,Service,Payment,Total..........")

Answer 2

Even when you fix the reserved keyword table issue, it still won't work. You are trying the insert date.toString() in the date field. (when concatenated, toString() gets called all non-string objects)

Instead, you should use a PreparedStatement and call stm.setDate(..) . Get more familiar with the prepared statement, as it is most often the better way to go. (it also has addBatch() , which works in a slightly different way - you set all parameters, then add, then set again.