Basic SQL Queries: SELECT and FROM

Basic SQL Queries: SELECT and FROM

Assessment

Interactive Video

•

Information Technology (IT), Architecture

•

KG - University

•

Practice Problem

•

Hard

Created by

Wayground Content

FREE Resource

This video tutorial introduces SQL queries, focusing on the SELECT and FROM clauses. It covers the basics of constructing queries to retrieve data from databases, using practical examples in phpMyAdmin. The tutorial also introduces SQL functions like COUNT, MIN, and MAX, and emphasizes best practices for writing efficient and clear SQL queries.

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10 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What are the two main clauses discussed in the introduction that are essential for retrieving data in SQL?

INSERT and UPDATE

SELECT and FROM

DELETE and ALTER

JOIN and WHERE

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

In SQL, what does the SELECT statement allow you to do?

Delete data from a table

Insert new data into a table

Create a new table

Specify the data you want to see

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the purpose of the FROM clause in an SQL query?

To specify the database to use

To indicate the table from which to retrieve data

To define the conditions for data retrieval

To sort the data in a specific order

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

In the practical demonstration, what SQL command is used to retrieve all fields from a table?

SELECT ALL

SHOW COLUMNS

SELECT *

DISPLAY FIELDS

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Why is it important to specify the table in the FROM clause when working with multiple tables?

To avoid syntax errors

To ensure the correct data is retrieved

To speed up query execution

To reduce database size

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which SQL function can be used to count the number of entries in a specific column?

COUNT

SUM

TOTAL

AVERAGE

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is a key best practice for writing clear SQL queries?

Using meaningful table and column names

Using complex table names

Writing all queries in a single line

Avoiding comments

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