La instrucción Select ejercicios Enter seleccione la solicitud
Enviado por piliberto99 • 10 de Agosto de 2014 • Trabajo • 905 Palabras (4 Páginas) • 302 Visitas
Select statement exercises
Enter select statements to:
1. Display the first name and age for everyone that's in the table.
R: select first, age, from empinfo;
2. Display the first name, last name, and city for everyone that's not from Payson.
R: select first, last, city, from empinfo where city <> 'Payson'
first last city
Eric Edwards San Diego
Mary Ann Edwards Phoenix
Ginger Howell Cottonwood
Sebastian Smith Gila Bend
Gus Gray Bagdad
Mary Ann May Tucson
Erica Williams Show Low
Leroy Brown Pinetop
Elroy Cleaver Globe
3. Display all columns for everyone that is over 40 years old.
R: select * from empinfo
where age > 40;
first last id age city state
John Jones 99980 45 Payson Arizona
Ginger Howell 98002 42 Cottonwood Arizona
Mary Ann May 32326 52 Tucson Arizona
Erica Williams 32327 60 Show Low Arizona
4. Display the first and last names for everyone whose last name ends in an "ay".
R: select first, last, from empinfo
where last LIKE '%ay';
first last
Gus Gray
Mary Ann May
5. Display all columns for everyone whose first name equals "Mary".
R: select * from empinfo
where first = 'Mary';
first last id age city state
Mary Jones 99982 25 Payson Arizona
6. Display all columns for everyone whose first name contains "Mary".
R: select * from empinfo
where first LIKE '%Mary%';
first last id age city state
Mary Jones 99982 25 Payson Arizona
Mary Ann Edwards 88233 32 Phoenix Arizona
Mary Ann May 32326 52 Tucson Arizona
4. Creating Tables
Create Table Exercise
You have just started a new company. It is time to hire some employees. You will need to create a table that will contain the following information about your new employees: firstname, lastname, title, age, and salary. After you create the table, you should receive a small form on the screen with the appropriate column names. If you are missing any columns, you need to double check your SQL statement and recreate the table. Once it's created successfully, go to the "Insert" lesson.
create table Fernando_g
firstname lastname title age salary
(firstname varchar(18) not null,
lastname varchar(20) not null,
title varchar(20 not null),
age number(3) not null,
salary number(6) not null);
5. Inserting into a Table
Insert statement exercises
It is time to insert data into your new employee table.
Your first three employees are the following:
Jonie Weber, Secretary, 28, 19500.00
Potsy Weber, Programmer, 32, 45300.00
Dirk Smith, Programmer II, 45, 75020.00
insert into Fernando_g
(firstname, lastname, title, age, salary)
values ('Jonie', 'Weber', 'Secretary', 28, 19500);
insert into Fernando_g
(firstname, lastname, title, age, salary)
values ('Potsy', 'Weber', 'Programmer', 32, 45300);
insert into Fernando_g
(firstname, lastname, title, age, salary)
values ('Dirk', 'Smith', 'Programmer II', 45, 75020);
Enter these employees into your table first, and then insert at least 5 more of your own list of employees in the table.
After they're inserted into the table, enter select statements to:
1. Select all columns for everyone in your employee table.
R: Select * from Fernando_g;
firstname lastname title age salary
Jonie Weber Secretary 28 19500
Potsy Weber Programmer 32 45300
Dirk Smith Programmer II 45 75020
2. Select all columns for everyone with a salary
...