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CUET Preparation 2024 | Individual Row Functions | Topic Wise Revision & MCQs| Computer Science & IP

Anjali Luthra・22 minutes read

SQL individual row functions cover SO functions, pre-built commands, and types available, including numeric, text, and date functions essential for IP and CS students. Instructions were given for a 50-question quiz to be completed within 24 hours, with detailed explanations of front-end queue and binary search questions.

Insights

  • SQL functions are divided into two main types: aggregate functions and individual row functions, with the latter further categorized into mathematical, text, and date functions, providing a comprehensive toolkit for data manipulation and analysis.
  • Individual row functions in SQL, such as ROUND for number rounding, LENGTH for character count, and INSTR for string searching, are essential for various fields like IP and CS, appearing in exams and serving as fundamental tools for data processing and manipulation.

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Recent questions

  • What are the main types of SQL functions?

    Aggregate and individual row functions.

  • What are some examples of numeric functions in SQL?

    SQRT, POWER, MODE, ROUND.

  • How do text functions in SQL operate?

    Manipulate strings for character operations.

  • What is the purpose of the INSTR function in SQL?

    Search for a string within another.

  • How are date functions in SQL beneficial?

    Retrieve and manipulate date and time data.

Related videos

Summary

00:00

SQL Row Functions: Types and Usage

  • Individual Row Functions in SQL is a topic that covers how these functions work, including SO functions, pre-built commands, and types available for use.
  • In SQL, there are two main types of functions: aggregate functions and individual row functions, with the latter further categorized into mathematical, text, and date functions.
  • Numeric functions in SQL include SQRT for square root, POWER for exponentiation, and MODE for finding remainders after division.
  • The ROUND function in SQL is crucial for rounding numbers to specific decimal places or whole numbers.
  • Date functions in SQL allow for retrieving the current date and time, as well as extracting specific elements like day, month, year, day name, and month name from a date.
  • Individual row functions are essential for both IP and CS students, appearing in Section A and other sections of exams.
  • Text functions in SQL involve LENGTH for character count, UPPER and LOWER for case conversion, and LEFT and RIGHT for extracting characters from strings.
  • MID, SUBSTRING, and SUBSTR functions in SQL are used for fetching characters from the middle of a string based on starting position and number of characters.
  • The INSTR function in SQL is utilized for searching one string within another and returns the position of the first occurrence.
  • TRIM function in SQL removes leading and trailing spaces, while CONCATENATE function joins two strings together.

19:29

SQL Revision, Quiz, and Binary Search Explanation

  • Inner functions execute before outer functions in a nested function structure.
  • Revision of DDL and DML SQL commands was assigned, with detailed videos available in the 12th playlist.
  • A quiz with 50 SQL questions was assigned, to be completed within 24 hours.
  • Instructions were given to attempt the quiz through a provided link and report the marks in the comments.
  • A question regarding the front end of a queue was discussed, with a detailed explanation of the answer.
  • A binary search question was explained step by step, detailing the process of finding the value at the mid index.
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