Complete

answers/exercise1.sql

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+CREATE SCHEMA myNewDB;
+SHOW DATABASES;

answers/exercise10.sql

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+SELECT*FROM Students WHERE City ='Philidelphia' OR City='Trenton';

answers/exercise11.sql

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+SELECT*FROM Students ORDER BY City;

answers/exercise12.sql

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+SELECT*FROM Students ORDER BY City DESC;

answers/exercise13.sql

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+SELECT*FROM Students ORDER BY Country,city;

answers/exercise14.sql

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+SELECT * FROM Students WHERE PostalCode IS NULL;

answers/exercise15.sql

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+SELECT * FROM Students WHERE PostalCode IS NOT NULL;

answers/exercise2.sql

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+DROP Database myNewDB;

answers/exercise3.sql

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+CREATE TABLE USERS (USERID int,LastName varchar(255),FirstName varchar(255),Address varchar(255),City varchar(255));
+describe USERS;

answers/exercise4.sql

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+DROP TABLE USERS;

answers/exercise5.sql

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+TRUNCATE TABLE USERS;

answers/exercise6.sql

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+ALTER TABLE USERS ADD Birthday date;

answers/exercise7.sql

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+DELETE FROM USERS WHERE Birthday;

answers/exercise9.sql

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+SELECT * FROM Students WHERE NOT City = 'Philidelphia';