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Ques:- I declare 4 procedure in package specification but in package body i write only 3 procedure. is it complie??//w
Asked In :- pure storage,
Ques:- IN A TABLE HAVE ONE COLUMN PRIMARY KEY..IT WILL NOT ALLOWS NULL VALUES AND DUPLICATE VALUES..INSTEAD OF PRIMARY KEY WHY CANT WE USE UNIQUE AND NOT NULL.THESE TWO ALSO DOESNT ACCEPT NULL VALUES IN NOT NULL AND UNIQUE DOESNT ACCEPT DUPLICATE VALUES?SO WHAT IS THE DIFEERENCE BETWEEN(UNIQUE,NOT NULL) AND PRIMARY KEY??????
Ques:- Suppose I have two table one Emp and other is dpt. Emp table has a field ,dept id,name ,sal and dpt table has afield dept id,dept name.Now I want to find out the emplyee list whose sal is between2000-3000 from dept x.
Asked In :-
Ques:- How we get second highest salary indatabase. Please show me this coding.
Asked In :- SRDT,
Ques:- How to display nth highest record in a table for example?How to display 4th highest (salary) record from customer table?
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The MySQL category on takluu.com is tailored for candidates aiming to master the fundamentals and advanced concepts of relational databases. Whether you’re a backend developer, data analyst, DBA, or full-stack engineer, understanding MySQL is essential for working with structured data in real-world applications.

MySQL is one of the most widely used open-source relational database management systems (RDBMS). It is trusted by small startups to large-scale enterprises due to its reliability, scalability, and performance. Interviewers often assess candidates on their ability to write efficient SQL queries, understand relational concepts, normalize data, and manage indexing and performance tuning.

In this section, you’ll find carefully curated interview questions covering a range of topics, including:

  • Basic SQL queries (SELECT, INSERT, UPDATE, DELETE)

  • Joins (INNER, LEFT, RIGHT, FULL)

  • Grouping and aggregate functions (GROUP BY, COUNT, SUM, AVG)

  • Subqueries and nested queries

  • Indexing and performance optimization

  • Transactions, ACID properties, and locks

  • Stored procedures, triggers, and views

  • User management and privileges

This category not only prepares you for syntax-based questions but also for scenario-based problems, such as query optimization, handling large datasets, designing database schemas, and managing concurrency issues.

Our goal is to help you answer MySQL questions with clarity and confidence, demonstrating both your theoretical understanding and practical experience. With real-life examples and mock interview challenges, you’ll be well-prepared to face technical rounds at companies ranging from startups to MNCs.

Use this category as your go-to resource to strengthen your MySQL knowledge, whether you’re preparing for a developer, analyst, or database administrator role.

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