如何使用预处理语句创建表并在表中插入值？

可以借助以下示例理解该原理，其中我们使用预处理语句创建表，该表名为“学生” −

mysql> PREPARE stmt3 FROM 'CREATE TABLE Student(Id INT, Name
Varchar(20))';
Query OK, 0 rows affected (0.00 sec)
Statement prepared

mysql> EXECUTE stmt3;
Query OK, 0 rows affected (0.73 sec)

mysql> DEALLOCATE PREPARE stmt3;
Query OK, 0 rows affected (0.00 sec)

现在，可以使用以下使用预处理语句的查询插入值

在 “学生” 表中 −

mysql> PREPARE stmt7 FROM 'INSERT INTO Student(Id,Name) values(?,?)';
Query OK, 0 rows affected (0.00 sec)
Statement prepared

mysql> SET @A = 1, @B = 'Ram';
Query OK, 0 rows affected (0.00 sec)

mysql> EXECUTE stmt7 using @A, @B;
Query OK, 1 row affected (0.04 sec)

mysql> SET @A = 2, @B = 'Shyam';
Query OK, 0 rows affected (0.00 sec)

mysql> EXECUTE stmt7 using @A, @B;
Query OK, 1 row affected (0.08 sec)

mysql> SET @A = 3, @B = 'Mohan';
Query OK, 0 rows affected (0.00 sec)

mysql> Select * from Student;
+------+-------+
| Id   | Name  |
+------+-------+
| 1    | Ram   |
| 2    | Shyam |
| 3    | Mohan |
+------+-------+
3 rows in set (0.00 sec)

V Jyothi

更新于： 20-Jun-2020

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