Kursusindhold
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: Changing the Books Structure
Your manager has decided that the books_table table should have an auto-incrementing book_id to uniquely identify each book. Additionally, the book_id will be set as the primary key for the table.
Opgave
Swipe to start coding
You are tasked with recreating the books_table table with the following columns:
book_id- The unique id of the book (SERIAL),PRIMARY KEY;title- The title of the book (VARCHAR, max-length255),NOT NULL;author- The author of the book (VARCHAR, max-length100);genre- The genre/category of the book (VARCHAR, max-length50);published_year- The year the book was published (INTEGER);isbn- The International Standard Book Number (VARCHAR, max-length20);publisher- The publisher of the book (VARCHARof max-length100);pages- The number of pages in the book (INTEGER);language- The language of the book (VARCHARof max-length50);is_available- Whether the book is available for lending (BOOLEAN);
Løsning
Skift til skrivebord for at øve i den virkelige verdenFortsæt der, hvor du er, med en af nedenstående mulighederVar alt klart?
Tak for dine kommentarer!
Sektion 4. Kapitel 10
Challenge: Changing the Books Structure
Your manager has decided that the books_table table should have an auto-incrementing book_id to uniquely identify each book. Additionally, the book_id will be set as the primary key for the table.
Opgave
Swipe to start coding
You are tasked with recreating the books_table table with the following columns:
book_id- The unique id of the book (SERIAL),PRIMARY KEY;title- The title of the book (VARCHAR, max-length255),NOT NULL;author- The author of the book (VARCHAR, max-length100);genre- The genre/category of the book (VARCHAR, max-length50);published_year- The year the book was published (INTEGER);isbn- The International Standard Book Number (VARCHAR, max-length20);publisher- The publisher of the book (VARCHARof max-length100);pages- The number of pages in the book (INTEGER);language- The language of the book (VARCHARof max-length50);is_available- Whether the book is available for lending (BOOLEAN);
Løsning
Skift til skrivebord for at øve i den virkelige verdenFortsæt der, hvor du er, med en af nedenstående mulighederVar alt klart?
Tak for dine kommentarer!
Sektion 4. Kapitel 10
Skift til skrivebord for at øve i den virkelige verdenFortsæt der, hvor du er, med en af nedenstående muligheder