Kamran Ahmed
3 weeks ago
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6 changed files with 112 additions and 35 deletions
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--- |
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title: Constraints Challenge |
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description: Create a table for bookstore inventory using various SQL constraints |
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order: 320 |
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type: challenge |
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initSteps: [] |
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expectedResults: |
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- columns: [message] |
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values: |
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- ['Table created successfully'] |
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--- |
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|
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You need to create a table named `book_inventory` for a bookstore system. The table should track detailed information about books using appropriate data types and constraints listed below. |
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| Column | Data Type | Constraints | |
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| ------------ | ---------------- | -------------------------------------------- | |
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| id | `INTEGER` | Primary Key | |
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| isbn | `VARCHAR(13)` | Null values not allowed and must be unique | |
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| title | `VARCHAR(200)` | Null values not allowed | |
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| author | `VARCHAR(100)` | Null values not allowed | |
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| price | `DECIMAL(10, 2)` | Null values not allowed and must be positive | |
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| pages | `INTEGER` | Must be positive | |
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| in_stock | `BOOLEAN` | Not null and default true | |
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| publish_year | `INTEGER` | Not null | |
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| last_updated | `TIMESTAMP` | Not null and default `CURRENT_TIMESTAMP` | |
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## Expected Output |
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After executing your query, the table should be created successfully with all specified columns and constraints. |
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## Notes |
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This challenge tests your knowledge of: |
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- SQL data types (INTEGER, VARCHAR, DECIMAL, BOOLEAN, DATE, TIMESTAMP) |
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- Primary key and unique constraints |
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- NOT NULL constraints |
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- DEFAULT values |
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- CHECK constraints for data validation |
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- Working with date and time data types |
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--- |
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title: Data Types Challenge |
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description: Create a table for bookstore inventory using appropriate SQL data types |
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order: 310 |
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type: challenge |
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initSteps: [] |
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expectedResults: |
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- columns: [message] |
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values: |
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- ['Table created successfully'] |
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--- |
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|
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You need to create a table named `book_inventory` for a bookstore system. The table should track detailed information about books using appropriate data types. |
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| Column | Description | |
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| ---------------- | ---------------------------------------------- | |
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| id | Whole numbers for identification (Primary Key) | |
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| isbn | Text of exactly 13 characters | |
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| title | Variable-length text up to 200 characters | |
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| author | Variable-length text up to 100 characters | |
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| price | Number with 2 decimal places and precision 10 | |
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| pages | Whole number | |
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| in_stock | True/False value | |
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| publication_date | Date only (no time) | |
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| last_updated | Date and time together | |
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The only constraint you need to implement is that the `id` column should be a primary key. Apart from that, you are only being tested on the data types. |
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## Expected Output |
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After executing your query, the table should be created successfully with all specified columns using appropriate data types. |
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--- |
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title: Simple Table Creation |
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description: Write a SQL query to create a `books` table with specific columns. |
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order: 300 |
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type: challenge |
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initSteps: [] |
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expectedResults: |
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- columns: [message] |
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values: |
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- ['Table created successfully'] |
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--- |
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|
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You are required to create a table named `books` for a bookstore database. The table should have the following columns: |
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| Column Name | Data Type | |
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| -------------- | -------------- | |
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| id | `INTEGER` | |
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| title | `VARCHAR(250)` | |
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| author | `VARCHAR(250)` | |
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| genre | `VARCHAR(250)` | |
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| published_date | `DATE` | |
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Create a simple table with these columns using basic data types. |
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## Expected Output |
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After executing the query, there should be no errors and the table should be created successfully. You can verify the schema under the `Schema` tab. |
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--- |
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title: Table Creation |
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description: Write a SQL query to create a `books` table with specific columns. |
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order: 300 |
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type: challenge |
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initSteps: [] |
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expectedResults: |
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- columns: [message] |
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values: |
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- ['Table created successfully'] |
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--- |
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|
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You are required to create a table named `books` for a bookstore database. The table should have the following columns: |
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| Column Name | Data Type | Constraints | |
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| -------------- | -------------- | ----------------- | |
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| id | INTEGER | PRIMARY KEY | |
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| title | VARCHAR(250) | NOT NULL | |
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| author | VARCHAR(250) | NOT NULL | |
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| genre | VARCHAR(250) | | |
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| price | DECIMAL(10, 2) | CHECK (price > 0) | |
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| published_date | DATE | | |
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Table should have following constraints in place: |
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- The `id` column should uniquely identify each book. |
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- The `title` and `author` columns cannot be `NULL`. |
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- The `price` column must be greater than `0`. |
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## Expected Output |
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After executing the query, there should be no errors and the table should be created successfully. |
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