Course Content
Introduction to SQL
Introduction to SQL
2. Filtering Data
The WHERE ClauseChallenge: Help a Reader Find Their Favorite GenreChallenge: Fetching Older BooksConditional Expressions: Comparison OperatorsChallenge: Avoid the Damaged BooksChallenge: Highlight New ArrivalsChallenge: Budget-Friendly BooksConditional Expressions: The AND OperatorChallenge: Find Specific Books for a ReaderChallenge: Defining RangesChallenge: Multiple ConditionsConditional Expressions: The OR OperatorChallenge: Matching Multiple OptionsChallenge: Excluding A RangeConditional Expressions: The NOT OperatorChallenge: Negating a Range
3. Sorting Data
Basic SortingChallenge: Sorting the Library CatalogueSorting by Multiple ColumnsChallenge: Further Sorting the CatalogueSorting after Filtering DataChallenge: Find the Cheapest BooksChallenge: Help a Customer Find a BookThe LIMIT KeywordChallenge: Select Books for the Collector's SectionChallenge: Affordable Books
4. Populating a Database
Creating a TableChallenge: Creating a new Books TableInserting Rows into a TableChallenge: Inserting DataChallenge: Inserting More DataInserting Multiple RowsChallenge: Inserting Bulk DataPrimary KeysThe SERIAL KeywordChallenge: Changing the Books StructureSpecifying Default ValuesChallenge: Further Improving the Books Table
5. Updating & Deleting Data
Challenge: Find all Genres
As a librarian, you aim to organize the books by their genres. The first step in this process is to compile a list of all the distinct genres available in the library's collection.
Task
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Write an SQL query to retrieve all unique genres from the Books
table.
Solution
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Section 1. Chapter 10
Challenge: Find all Genres
As a librarian, you aim to organize the books by their genres. The first step in this process is to compile a list of all the distinct genres available in the library's collection.
Task
Swipe to show code editor
Write an SQL query to retrieve all unique genres from the Books
table.
Solution
Switch to desktop for real-world practiceContinue from where you are using one of the options below
Everything was clear?
Thanks for your feedback!
Section 1. Chapter 10
Switch to desktop for real-world practiceContinue from where you are using one of the options below