Mysql Basic

Mysql Basic

Easy Questions

MYSQL

MySQL Subquery
MySQL Character Set
MySQL Views
Mysql Basic
Mysql Setup
Mysql Foreign Keys
Mysql Query Optimization
Interacting With MySQL
Server SQL Mode
MySQL Events
MySQL UNION
MySQL Full-Text Search
MySQL Command Line Tool
Mysql Error handling
Mysql Compound Statements
MySQL Stored Procedures
MySQL Stored Functions
MySQL Triggers
MySQL Connectors and APIs
Connection
MySQL Functions
MySQL Operators
MySQL Table Operations
MySQL Internationalization and Localization
MySQL Database Operations
MySQL Access Control and Security
MySQL Type Conversion in Expression Evaluation
MySQL Scheduling and Locking Issues
MySQL ORDER BY
MySQL HAVING
MySQL GROUP BY
MySQL Optimization
Managing MySQL Users
MySQL Programs
Access Control for MySQL Stored Programs and Views
Create Database
Drop Database
Select Database
Data Types
Create Tables
Insert Query
Select Query
Mysql miscellaneous
Where Clause
Update Query
Delete Query
Sorting Results
Using Join
NULL Values
Transactions
Alter Command
Indexes
Database Info
Using Sequences
  1. What is the meaning of “EMPTY SET” in the following query?
    SELECT First_name, Last_name, Emp_id
    FROM Employee
    WHERE Last_name=’Gupta’;
    /* after Execution*/ Mysql tool RETURN EMPTY SET 0:00sec










  1. View Hint View Answer Discuss in Forum

    NA

    Correct Option: C

    “EMPTY SET” means there were no values stored in the structure that belongs to lname.

  1. Which of the following is more efficient?
    LOAD DATA, INSERT










  1. View Hint View Answer Discuss in Forum

    NA

    Correct Option: D

    In MySQL, the ‘LOAD DATA’ in all forms is more efficient than the ‘INSERT’ because it loads rows in bulk. The server first parses then interprets only one statement instead of many.

  1. The function used to convert a string to an int is ______________.










  1. View Hint View Answer Discuss in Forum

    NA

    Correct Option: C

    In MySQL, the function used to convert a string to an integer is INET_ATON(). On the other hand, the function INET_NTOA() converts a string to the corresponding integer value.

  1. The function used to convert an int to string is ______________.










  1. View Hint View Answer Discuss in Forum

    NA

    Correct Option: C

    In MySQL, the function used to convert an integer to a string is INET_NTOA(). On the other hand, the function INET_ATON() converts a string to the corresponding integer value.

  1. What is used to perform analysis of key values by the server?










  1. View Hint View Answer Discuss in Forum

    NA

    Correct Option: D

    In MySQL, for the MyISAM and InnoDB tables, the server can be told to perform an analysis of key values by issuing the ANALYZE TABLE statement. It helps in knowing about query optimization.