Write the appropriate SQL queries a) List the sailor who made the highest number of reservations for each boat. b) List, for every boat, the number of times it has been reserved, including those boats that have never been reserved (list the id and the name). c) List those sailors who have reserved only red boats.

Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
Section: Chapter Questions
Problem 1PE
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Given the Sailor, Boat, and Reservation tables.
Sailor Table
Reservation Table
ID (PK)
NAME
RATING
AGE
SID (FK)
BID (FK)
DAY
22
Dustin
7
45
22
101
10.10.2006
31
Lubber
8
65,5
58
Rusty
10
35
58
103
11.12.2011
59
Smith
9
41
31
104
4.02.2007
31
103
5.02.2007
Boat Table
58
103
6.02.2007
ID (PK)
NAME
COLOUR
101
Interlake
blue
31
102
15.02.2007
102
Interlake
red
59
102
5.01.2008
103
Clipper
green
red
104
Marine
31
101
5.01.2008
Write the appropriate SQL queries
a) List the sailor who made the highest number of reservations for each boat.
b) List, for every boat, the number of times it has been reserved, including those boats
that have never been reserved (list the id and the name).
c) List those sailors who have reserved only red boats.
d) For which boat are there the most reservations?
e) Select all sailors who have never reserved a red boat.
f) Find the sailors who have made, for each boat colour, at least one reservation for a
boat with that colour.
Transcribed Image Text:Given the Sailor, Boat, and Reservation tables. Sailor Table Reservation Table ID (PK) NAME RATING AGE SID (FK) BID (FK) DAY 22 Dustin 7 45 22 101 10.10.2006 31 Lubber 8 65,5 58 Rusty 10 35 58 103 11.12.2011 59 Smith 9 41 31 104 4.02.2007 31 103 5.02.2007 Boat Table 58 103 6.02.2007 ID (PK) NAME COLOUR 101 Interlake blue 31 102 15.02.2007 102 Interlake red 59 102 5.01.2008 103 Clipper green red 104 Marine 31 101 5.01.2008 Write the appropriate SQL queries a) List the sailor who made the highest number of reservations for each boat. b) List, for every boat, the number of times it has been reserved, including those boats that have never been reserved (list the id and the name). c) List those sailors who have reserved only red boats. d) For which boat are there the most reservations? e) Select all sailors who have never reserved a red boat. f) Find the sailors who have made, for each boat colour, at least one reservation for a boat with that colour.
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