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為了讓它理解，我們使用名為“student_info”的表，它具有以下值 –

mysql> Select * from student_info;
+-----+---------+------------+------------+
| id  | Name    | Address    | Subject    |
+-----+---------+------------+------------+
| 101 | YashPal | Amritsar   | History    |
| 105 | Gaurav  | Jaipur     | Literature |
| 110 | Rahul   | Chandigarh | History    |
| 125 | Raman   | Shimla     | Computers  |
+------+--------+------------+------------+
4 rows in set (0.00 sec)

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現在，借助以下查詢，我們將創建一個帶有 IN 參數的存儲過程，該過程將通過提供姓名作為參數來顯示特定學生的所有詳細信息。

mysql> DELIMITER // ;
mysql> Create PROCEDURE detail(IN S_Name VARCHAR(20))
    -> BEGIN
    -> SELECT * From Student_info WHERE Name = S_Name;
    -> END //
Query OK, 0 rows affected (0.16 sec)
mysql> DELIMITER ;

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S_Name 是存儲過程“detail”的 IN 參數。如果我們想查看學生姓名“Gaurav”的所有詳細信息，則可以借助以下查詢來完成 –

mysql> CALL detail('Gaurav');
+-----+--------+---------+------------+
| id  | Name   | Address | Subject    |
+-----+--------+---------+------------+
| 105 | Gaurav | Jaipur  | Literature |
+-----+--------+---------+------------+
1 row in set (0.00 sec)

Query OK, 0 rows affected (0.01 sec)

mysql> CALL detail('Raman');
+-----+-------+---------+-----------+
| id  | Name  | Address | Subject   |
+-----+-------+---------+-----------+
| 125 | Raman | Shimla  | Computers |
+-----+-------+---------+-----------+
1 row in set (0.00 sec)

Query OK, 0 rows affected (0.01 sec)

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