1. SQL Exercise a) Write the SQL Command [//WRITE CODE HERE] name, salary, department [//WRITE CODE HERE] employees_table [//WRITE CODE HERE] start_date >= “2019-01-01"; b) The table and following SQL command will result in how many rows? Invoices Invoice_id date amount 001-8 2019-10-02 35000 001-9 2019-10-02 47000 001-10 2019-10-03 23000 001-11 2019-10-04 10000 SQL SELECT * FROM invoices WHERE invoice_id < "001-10"; a. 0 rows b. 1 row c. 2 rows d. 3 rows c) The following table and SQL command will result in how many rows? catalogs item Full_price sale_price Apple 25 NULL Pizza NULL NULL Cake 120 90 Juice 45 45 SQL SELECT * FROM catalogs WHERE sale_price IS NULL; a. 1 row b. C. 2 rows 3 rows

Computer Networking: A Top-Down Approach (7th Edition)
7th Edition
ISBN:9780133594140
Author:James Kurose, Keith Ross
Publisher:James Kurose, Keith Ross
Chapter1: Computer Networks And The Internet
Section: Chapter Questions
Problem R1RQ: What is the difference between a host and an end system? List several different types of end...
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1. SQL Exercise
a) Write the SQL Command
[//WRITE CODE HERE] name, salary, department
[//WRITE CODE HERE] employees_table
[//WRITE CODE HERE] start_date >= "2019-01-01";
b) The table and following SQL command will result in how many rows?
Invoices
Invoice_id
date
amount
001-8
2019-10-02
35000
001-9
2019-10-02
47000
001-10
2019-10-03
23000
001-11
2019-10-04
10000
SQL
SELECT *
FROM invoices
WHERE invoice_id < "001-10";
a. 0 rows
b. 1 row
C. 2 rows
d. 3 rows
c) The following table and SQL command will result in how many rows?
catalogs
item
Full_price
sale_price
Apple
25
NULL
Pizza
NULL
NULL
Cake
120
90
Juice
45
45
SQL
SELECT *
FROM catalogs
WHERE sale_price IS NULL;
a. 1 row
b. 2 rows
c. 3 rows
d. 4 rows
Transcribed Image Text:1. SQL Exercise a) Write the SQL Command [//WRITE CODE HERE] name, salary, department [//WRITE CODE HERE] employees_table [//WRITE CODE HERE] start_date >= "2019-01-01"; b) The table and following SQL command will result in how many rows? Invoices Invoice_id date amount 001-8 2019-10-02 35000 001-9 2019-10-02 47000 001-10 2019-10-03 23000 001-11 2019-10-04 10000 SQL SELECT * FROM invoices WHERE invoice_id < "001-10"; a. 0 rows b. 1 row C. 2 rows d. 3 rows c) The following table and SQL command will result in how many rows? catalogs item Full_price sale_price Apple 25 NULL Pizza NULL NULL Cake 120 90 Juice 45 45 SQL SELECT * FROM catalogs WHERE sale_price IS NULL; a. 1 row b. 2 rows c. 3 rows d. 4 rows
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