Job-Ready SQL in an Afternoon - Conditional Filtering Direct Comparisons

The video tutorial introduces SQL filtering techniques, focusing on how to filter data in a database. It begins with an overview of the track table and demonstrates filtering by composer, specifically ACDC. The tutorial explains the use of SQL comparison operators, such as less than or equal to, using the milliseconds column as an example. It highlights the importance of filtering to retrieve specific data efficiently.

What is the primary purpose of filtering in SQL?

• To delete data from the database

• To limit the number of columns

• To read all data from the database

• To retrieve specific data based on conditions

Which SQL statement is used to select data from a database?

• INSERT

• SELECT

• UPDATE

• DELETE

How are strings compared in SQL when filtering data?

• Using parentheses

• Using double quotes

• Using single quotes

• Using backticks

What does the WHERE clause do in an SQL query?

• It sorts the results

• It groups the results

• It filters records based on a condition

• It specifies the columns to be displayed

Which operator would you use to find records with values greater than a specified number?

• >

• <=

• =

• <

What is the difference between the '<' and '<=' operators?

• '<=' includes the specified value, '<' does not

• Neither includes the specified value

• '<' includes the specified value, '<=' does not

• Both include the specified value

In SQL, what does the '=' operator do?

• Compares two values for equality

• Subtracts one number from another

• Adds two numbers

• Assigns a value to a variable