https://github.com/zipcodecore/sql.buildanddestroy
https://github.com/zipcodecore/sql.buildanddestroy
Last synced: 10 months ago
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- Host: GitHub
- URL: https://github.com/zipcodecore/sql.buildanddestroy
- Owner: ZipCodeCore
- Created: 2019-11-18T06:47:12.000Z (about 6 years ago)
- Default Branch: master
- Last Pushed: 2021-12-04T06:15:58.000Z (about 4 years ago)
- Last Synced: 2025-01-08T12:41:26.217Z (12 months ago)
- Size: 4.88 KB
- Stars: 0
- Watchers: 2
- Forks: 55
- Open Issues: 31
-
Metadata Files:
- Readme: README.md
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README
# Build and Destroy: Introductory SQL Queries
Given the scenarios, add the the directed queries to the "answers" directory's files.
## Creating databases
Write the correct SQL statement to create a new database called **myNewDB**.
*(Add your query to the file exercise1.sql)*
## Deleting databases
Write the correct SQL statement to delete a database named **myNewDB**.
*(Add your query to the file exercise2.sql)*
## Creating tables
Write the correct SQL statement to create a new table called **Users**, with an int field called **UserID**, and the following varchar fields of size 255: **LastName, FirstName, Address, City**
*(Add your query to the file exercise3.sql)*
## Deleting tables
Write the correct SQL statement to delete a table called **Users**.
*(Add your query to the file exercise4.sql)*
Use the **TRUNCATE** statement to delete all data inside the **Users** table.
*(Add your query to the file exercise5.sql)*
## Altering tables
Add a column of type **DATE** called **Birthday** to the **Users** table.
*(Add your query to the file exercise6.sql)*
Delete the column **Birthday** from the **Users** table.
*(Add your query to the file exercise7.sql)*
## Inserting records
Insert a new record in the **Students** table.
**Schema:**
```
StudentName,
Address,
City,
PostalCode,
Country
```
**Record's info to enter:**
```
Jane Doe
57 Union St
Glasgow, Scotland
G13RB
```
*(Add your query to the file exercise8.sql)*
## Selecting Records
### Where
Use the **NOT** keyword to select all records in the **Students** table where **City** is NOT "Philadelphia".
*(Add your query to the file exercise9.sql)*
Select all records in the **Students** table where the **City** column has the value 'Philadelphia' or 'Trenton'.
*(Add your query to the file exercise10.sql)*
### Order By
Select all records from the **Students** table, sort the result alphabetically by the column **City**.
*(Add your query to the file exercise11.sql)*
Select all records from the **Students** table, sort the result reversed alphabetically by the column **City**.
*(Add your query to the file exercise12.sql)*
Select all records from the **Students** table, sort the result alphabetically, first by the column **Country**, then by the column **City**.
*(Add your query to the file exercise13.sql)*
### Null values
Select all records from the **Students** where the **PostalCode** column is empty.
*(Add your query to the file exercise14.sql)*
Select all records from the **Students** where the **PostalCode** column is **NOT** empty.
*(Add your query to the file exercise15.sql)*
## Updating records
Update the **City** column of all records in the **Students** table and set it to "Edinburgh".
*(Add your query to the file exercise16.sql)*
Set the value of the **City** columns to "Edinburgh", but only the ones where the **Country** column has the value "Scotland".
*(Add your query to the file exercise17.sql)*
Update the **City** value and the **Country** value to "Edinburgh", "Scotland" in the **Students** table, for the Student whose ID is 35.
*(Add your query to the file exercise18.sql)*
## Deleting Records
Delete all the records from the **Students** table where the **Country** value is "Scotland".
*(Add your query to the file exercise19.sql)*
Delete all the records from the **Students** table.
*(Add your query to the file exercise20.sql)*