Skip to main content

Testdome Interview question - Mysql Stored Procedure

 Mysql Stored Procedure 
A company needs a stored procedure that will insert a new user with an appropriate type.

Consider the following tables:

TABLE userTypes
id INTEGER NOT NULL PRIMARY KEY, type VARCHAR(50) NOT  NULL
TABLE users
id INTEGER NOT NULL  PRIMARY KEY  AUTO_INCREMENT, email VARCHAR(50)NOT NULL, userTypeId INTEGER NOT NULL ,FOREIGN KEY(userTypeId) REFERENCES  user Types (id)
Finish the insertUser procedure so that it inserts a user, with these requirements:
• id is auto incremented.
• email is equal to the email parameter.
• userTypeld is the id of the userTypes row whose type attribute is equal to the type parameter.
DELIMITER $$
CREATE PROCEDURE insertUser(
    IN p_email VARCHAR(50),
    IN p_type VARCHAR(50)
)
BEGIN
    DECLARE v_userTypeId INT;
    -- Get userTypeId from userTypes table
    SELECT id INTO v_userTypeId  FROM userTypes WHERE type = p_type    LIMIT 1;
    -- Insert into users table
    INSERT INTO users (email, userTypeId)  VALUES (p_email, v_userTypeId);
END $$
DELIMITER ;

Comments

Popular posts from this blog

MySQL's ACID compliance

Mysql acid compliance ACID is an acronym that stands for four key properties of database transactions: Atomicity Ensures that a transaction is treated as a single, indivisible unit of work Either all operations within a transaction are completed successfully, or none are If any part of the transaction fails, the entire transaction is rolled back to its previous state Prevents partial updates that could leave the database in an inconsistent state Consistency Guarantees that a transaction brings the database from one valid state to another valid state All data written to the database must adhere to defined rules, constraints, cascades, triggers, and other database integrity mechanisms Ensures that any transaction will not break the database's predefined rules Isolation Determines how and when changes made by one transaction become visible to other transactions Prevents interference between concurrent transactions MySQL provides different isolation levels: Read Uncommitted Read Commit...

PHP OOPs exercise - Basic Oops

  Here are key PHP OOP (Object-Oriented Programming) exercise questions with solutions: Basic Class and Object Exercise: // Create a simple bank account class class BankAccount {     private $accountNumber;     private $balance;     public function __construct($accountNumber, $initialBalance = 0) {         $this->accountNumber = $accountNumber;         $this->balance = $initialBalance;     }     public function deposit($amount) {         if ($amount > 0) {             $this->balance += $amount;             return true;         }         return false;  ...

Interview questions for Senior PHP Developer particle41.com

1.Self Introduction 2.Basic questions on session and cookie. 3.Where is session stored? 4.Difference between Cookie and session. 5.Will there be any session before session start? 6.Post Max execution time.How can we modify it? 7.We have a string, "BJFSJK".Without any php function reverse it with half the string length.   To reverse the string with half the string length without using any PHP functions, you can implement a simple algorithm to achieve the desired result. Here's how you can do it: Initialize two pointers, one at the beginning of the string and the other at the midpoint of the string. Swap characters between these two pointers iteratively, moving the pointers towards each other until they meet or cross each other. Here's the PHP code to implement this algorithm:  <?php $string = "ABC100"; $length = strlen($string); // Calculate the midpoint of the string $midpoint = (int)($length / 2); // Initialize pointers $start = 0; $end = $length - 1; //...