What kind of SQL statements can be used to prepare statements?

In fact, it is impossible to prepare all SQL statements, because MySQL only allows the preparation of the following types of SQL statements:

SELECT statement

Example

mysql> PREPARE stmt FROM 'SELECT tender_value from Tender WHERE
Companyname = ?';
Query OK, 0 rows affected (0.09 sec)
Statement prepared

mysql> SET @A = 'Singla Group.';
Query OK, 0 rows affected (0.00 sec)

mysql> EXECUTE stmt using @A;
+--------------+
| tender_value |
+--------------+
|   220.255997 |
+--------------+
1 row in set (0.07 sec)

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

INSERT, REPLACE, UPDATE and DELETE

Statements that modify data.

Example

mysql> PREPARE stmt1 FROM 'DELETE from Tender WHERE Sr = ?';
Query OK, 0 rows affected (0.00 sec)
Statement prepared

mysql> SET @A = 4;
Query OK, 0 rows affected (0.00 sec)

mysql> EXECUTE stmt1;
ERROR 1210 (HY000): Unknown error 1210

mysql> EXECUTE stmt1 using @A;
Query OK, 1 row affected (0.08 sec)

mysql> DEALLOCATE PREPARE stmt1;
Query OK, 0 rows affected (0.00 sec)

mysql> Select * from tender;
+----+---------------+--------------+
| Sr | CompanyName   | Tender_value |
+----+---------------+--------------+
| 1  | Abc Corp.     |   250.369003 |
| 2  | Khaitan Corp. |   265.588989 |
| 3  | Singla group. |   220.255997 |
+----+---------------+--------------+
3 rows in set (0.00 sec)

CREATE TABLE statement.

Example

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)

SET, DO and many SHOW statements

Example

mysql> PREPARE stmt10 FROM 'SHOW TABLES';
Query OK, 0 rows affected (0.00 sec)
Statement prepared

mysql> EXECUTE stmt10;
+-------------------+
| Tables_in_query   |
+-------------------+
| emp               |
| emp123            |
| emp_t             |
| examination_btech |
| new_number        |
| student           |
| student_detail    |
| student_info      |
| tender            |
| website           |
+-------------------+
10 rows in set (0.00 sec)

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