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fin #28

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1 change: 1 addition & 0 deletions answers/exercise1.sql
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CREATE DATABASE myNewDB;
1 change: 1 addition & 0 deletions answers/exercise10.sql
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SELECT * FROM Students WHERE City IN ('Trenton', 'Philadelphia');
1 change: 1 addition & 0 deletions answers/exercise11.sql
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SELECT * FROM Students ORDER BY City;
1 change: 1 addition & 0 deletions answers/exercise12.sql
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SELECT * FROM Students ORDER BY City DESC;
1 change: 1 addition & 0 deletions answers/exercise13.sql
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SELECT * FROM Students ORDER BY Country , City;
13 changes: 13 additions & 0 deletions answers/exercise14.sql
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INSERT INTO Students(
StudentName,
Address,
City,
Country,
PostalCode)
VALUES(
'Steve-o',
'57 Union St',
'Glasgow',
'Scotland',
NULL);
SELECT * FROM Students WHERE PostalCode IS NULL;
1 change: 1 addition & 0 deletions answers/exercise15.sql
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SELECT * FROM Students WHERE PostalCode IS NOT NULL;
5 changes: 5 additions & 0 deletions answers/exercise16.sql
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UPDATE Students SET City = 'Edinburgh';

SET SQL_SAFE_UPDATES = 0;

SELECT * FROM Students;
1 change: 1 addition & 0 deletions answers/exercise17.sql
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UPDATE Students SET City = 'Edinburgh' AND Country = 'Scotland';
1 change: 1 addition & 0 deletions answers/exercise18.sql
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UPDATE Students SET City = 'Edinburgh' AND Country = 'Scotland' WHERE ID = 35;
1 change: 1 addition & 0 deletions answers/exercise19.sql
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DELETE FROM Students WHERE Country = 'Scotland';
1 change: 1 addition & 0 deletions answers/exercise2.sql
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DROP DATABASE myNewDB;
1 change: 1 addition & 0 deletions answers/exercise20.sql
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DELETE FROM Students;
10 changes: 10 additions & 0 deletions answers/exercise3.sql
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USE myNewDB;

CREATE TABLE Users(
UserID int,
LastName VARCHAR(255),
FirstName VARCHAR(255),
Address VARCHAR(255),
City VARCHAR(255));

DESCRIBE Users;
1 change: 1 addition & 0 deletions answers/exercise4.sql
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DROP TABLE Users;
1 change: 1 addition & 0 deletions answers/exercise5.sql
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TRUNCATE TABLE Users;
3 changes: 3 additions & 0 deletions answers/exercise6.sql
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ALTER TABLE Users
ADD Birthday DATE;
DESCRIBE Users;
3 changes: 3 additions & 0 deletions answers/exercise7.sql
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ALTER TABLE Users
DROP Birthday;
DESCRIBE Users;
21 changes: 21 additions & 0 deletions answers/exercise8.sql
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CREATE TABLE Students(
StudentName VARCHAR (255),
Address VARCHAR(255),
City VARCHAR(255),
PostalCode VARCHAR(255),
Country VARCHAR(255));

INSERT INTO Students(
StudentName,
Address,
City,
Country,
PostalCode)
VALUES(
'Jane Doe',
'57 Union St',
'Glasgow',
'Scotland',
'G13RB');

SELECT * FROM Students;
1 change: 1 addition & 0 deletions answers/exercise9.sql
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SELECT * FROM Students WHERE City NOT IN ('Philadelphia');