Difference between revisions of "SELECT from Nobel Tutorial"

From SQLZOO
Jump to: navigation, search
(Chemistry and Physics last)
 
(38 intermediate revisions by 7 users not shown)
Line 1: Line 1:
 
+
{{Languages}}
 
<div class='ref_section' style='float:right'>
 
<div class='ref_section' style='float:right'>
 
<table class='db_ref'>
 
<table class='db_ref'>
Line 24: Line 24:
 
<td>1960</td>
 
<td>1960</td>
 
<td>Medicine</td>
 
<td>Medicine</td>
<td align = 'left'>Peter Medawar</td>
+
<td align = 'left'>Peter Madawar</td>
 
</tr>
 
</tr>
 
<tr>
 
<tr>
Line 37: Line 37:
 
   <pre style='width:20em;'>nobel(yr, subject, winner)</pre>
 
   <pre style='width:20em;'>nobel(yr, subject, winner)</pre>
  
<div class="progress_panel"><div>
+
<p>Using the <code>SELECT</code> statement.</p>
  <div class="summary">Summary</div>
+
==Winners from 1950==
  <div class="progressbarbg">
 
      <div class="progressbar"></div>
 
  </div>
 
</div></div>
 
 
 
<h2>Exercises</h2>
 
  <p>Using the <code>SELECT</code> statement.</p>
 
 
<div class='qu'>
 
<div class='qu'>
 
Change the query shown so that it displays Nobel prizes for 1950.  
 
Change the query shown so that it displays Nobel prizes for 1950.  
Line 61: Line 54:
 
</div>
 
</div>
  
 +
==1962 Literature==
 
<div class='qu'>
 
<div class='qu'>
 
Show who won the 1962 prize for Literature.  
 
Show who won the 1962 prize for Literature.  
Line 78: Line 72:
 
</div>
 
</div>
  
 +
==Albert Einstein==
 
<div class='qu'>
 
<div class='qu'>
 
Show the year and subject that won 'Albert Einstein' his prize.   
 
Show the year and subject that won 'Albert Einstein' his prize.   
Line 90: Line 85:
 
</div>
 
</div>
  
 
+
==Recent Peace Prizes==
 
<div class='qu'>
 
<div class='qu'>
 
Give the name of the 'Peace' winners since the year 2000, including 2000.   
 
Give the name of the 'Peace' winners since the year 2000, including 2000.   
Line 104: Line 99:
 
</div>
 
</div>
  
 +
==Literature in the 1980's==
 
<div class='qu'>
 
<div class='qu'>
 
Show all details ('''yr''', '''subject''', '''winner''') of the Literature prize winners for 1980 to 1989 inclusive.   
 
Show all details ('''yr''', '''subject''', '''winner''') of the Literature prize winners for 1980 to 1989 inclusive.   
Line 117: Line 113:
 
</div>
 
</div>
  
 +
==Only Presidents==
 
<div class='qu'>
 
<div class='qu'>
Show all details of the presidential winners: ('Theodore Roosevelt', 'Woodrow Wilson', 'Jed Bartlet', 'Jimmy Carter') 
+
Show all details of the presidential winners:
 +
*Theodore Roosevelt
 +
*Woodrow Wilson
 +
*Jimmy Carter
 +
*Barack Obama
 +
 
 
<source lang='sql' class='def'>
 
<source lang='sql' class='def'>
 
SELECT * FROM nobel
 
SELECT * FROM nobel
Line 129: Line 131:
 
<source lang='sql' class='ans'>
 
<source lang='sql' class='ans'>
 
SELECT * FROM nobel
 
SELECT * FROM nobel
  WHERE winner IN ('Theodore Roosevelt',  
+
  WHERE winner IN ('Theodore Roosevelt',
                  'Woodrow Wilson',  
+
  'Woodrow Wilson',
                  'Jed Bartlet',  
+
  'Jimmy Carter',
                  'Jimmy Carter')
+
  'Barack Obama')
 
</source>
 
</source>
 
</div>
 
</div>
  
 +
==John==
 
<div class='qu'>
 
<div class='qu'>
 
Show the winners with first name John  
 
Show the winners with first name John  
Line 147: Line 150:
 
</div>
 
</div>
  
 +
==Chemistry and Physics from different years==
 +
<div class='qu'>
 +
<p class=imper>Show the Physics winners for 1980 together with the Chemistry winners for 1984.</p>
 +
<source lang='sql' class='def'>
 +
</source>
 +
 +
<source lang='sql' class='ans'>
 +
SELECT *
 +
FROM nobel
 +
WHERE (subject='physics' AND yr=1980) OR
 +
      (subject='chemistry' AND yr=1984)
 +
</source>
 +
</div>
 +
 +
==Exclude Chemists and Medics==
 +
<div class='qu'>
 +
<p class=imper>Show the winners for 1980 excluding the Chemistry and Medicine</p>
 +
<source lang='sql' class='def'>
 +
</source>
 +
 +
<source lang='sql' class='ans'>
 +
SELECT *
 +
FROM nobel
 +
WHERE yr=1980 AND
 +
  subject NOT IN ('Chemistry','Medicine')
 +
</source>
 +
</div>
 +
 +
==Early Medicine, Late Literature==
 
<div class='qu'>
 
<div class='qu'>
In which years was the Physics prize awarded but no Chemistry prize. (WARNING - this question is way too hard for this level, you will need to use sub queries or joins).
+
Show who won a 'Medicine' prize in an early year (before 1910, not including 1910) together with winners of a 'Literature' prize in a later year (after 2004, including 2004)
 
<source lang='sql' class='def'>
 
<source lang='sql' class='def'>
 
</source>
 
</source>
  
 
<source lang='sql' class='ans'>
 
<source lang='sql' class='ans'>
SELECT DISTINCT yr
+
SELECT *
 
FROM nobel  
 
FROM nobel  
WHERE subject='Physics' and yr NOT IN
+
WHERE (subject='Medicine' and yr <1910) OR
(SELECT yr from nobel
+
      (subject='Literature' AND yr>=2004)
WHERE subject='Chemistry')
 
 
</source>
 
</source>
 
</div>
 
</div>
  
 
<div>
 
<div>
<div class="lsclear">Clear your results</div>
 
 
<p><div class="quizlink">[[Nobel Quiz]]</div></p>
 
<p><div class="quizlink">[[Nobel Quiz]]</div></p>
 +
</div>
 +
 +
==Harder Questions==
 +
==Umlaut==
 +
<div class='qu'>
 +
Find all details of the prize won by PETER GRÜNBERG
 +
<div class=hint title='Non-ASCII characters'>The u in his name has an '''umlaut'''. You may find this link useful https://en.wikipedia.org/wiki/%C3%9C#Keyboarding</div>
 +
<source lang='sql' class='def'>
 +
</source>
 +
 +
<source lang='sql' class='ans'>
 +
SELECT *
 +
FROM nobel
 +
WHERE winner in ('Peter Grünberg')
 +
</source>
 +
</div>
 +
 +
==Apostrophe==
 +
<div class='qu'>
 +
Find all details of the prize won by EUGENE O'NEILL
 +
<div class=hint title='Escaping single quotes'>You can't put a single quote in a quote string directly. You can use two single quotes within a quoted string.</div>
 +
<source lang='sql' class='def'>
 +
</source>
 +
 +
<source lang='sql' class='ans'>
 +
SELECT *
 +
FROM nobel
 +
WHERE winner in ('Eugene O''Neill')
 +
</source>
 +
</div>
 +
 +
==Knights of the realm==
 +
<div class='qu'><span class='param respectorder'></span>
 +
Knights in order
 +
<p class=imper>List the winners, year and subject where the winner starts with '''Sir'''. Show the the most recent first, then by name order.</p>
 +
<source lang='sql' class='def'>
 +
</source>
 +
 +
<source lang='sql' class='ans'>
 +
SELECT winner, yr, subject
 +
FROM nobel
 +
WHERE winner LIKE 'Sir%'
 +
ORDER BY yr DESC, winner
 +
</source>
 +
</div>
 +
 +
==Chemistry and Physics last==
 +
<div class='qu'><span class='param respectorder'></span>
 +
The expression '''subject IN ('Chemistry','Physics')''' can be used as a value - it will be '''0''' or '''1'''.
 +
<p class=imper>Show the 1984 winners and subject ordered by subject and winner name; but list Chemistry and Physics last.</p>
 +
<source lang='sql' class='def'>
 +
SELECT winner, subject, subject IN ('Physics','Chemistry')
 +
  FROM nobel
 +
WHERE yr=1984
 +
ORDER BY subject,winner
 +
</source>
 +
 +
<source lang='sql' class='ans'>
 +
select winner, subject
 +
from nobel
 +
where yr=1984
 +
order by subject in ('Physics','Chemistry'),subject,winner
 +
</source>
 +
{{#ev:youtube|9pfL0Hj1Axk}}
 
</div>
 
</div>

Latest revision as of 14:22, 28 February 2017

Language: English  • 中文
nobel
yr subject winner
1960 Chemistry Willard F. Libby
1960 Literature Saint-John Perse
1960 Medicine Sir Frank Macfarlane Burnet
1960 Medicine Peter Madawar
...

nobel Nobel Laureates

We continue practicing simple SQL queries on a single table.

This tutorial is concerned with a table of Nobel prize winners:

nobel(yr, subject, winner)

Using the SELECT statement.

Winners from 1950

Change the query shown so that it displays Nobel prizes for 1950.

SELECT yr, subject, winner
  FROM nobel
 WHERE yr = 1960
SELECT yr, subject, winner
  FROM nobel
 WHERE yr = 1950

1962 Literature

Show who won the 1962 prize for Literature.

SELECT winner
  FROM nobel
 WHERE yr = 1960
   AND subject = 'Physics'
SELECT winner
  FROM nobel
 WHERE yr = 1962
   AND subject = 'Literature'

Albert Einstein

Show the year and subject that won 'Albert Einstein' his prize.

SELECT yr, subject
FROM nobel
WHERE winner = 'Albert Einstein'

Recent Peace Prizes

Give the name of the 'Peace' winners since the year 2000, including 2000.

SELECT winner
FROM nobel
WHERE subject = 'Peace'
AND yr >= 2000

Literature in the 1980's

Show all details (yr, subject, winner) of the Literature prize winners for 1980 to 1989 inclusive.

SELECT yr,subject,winner
FROM nobel
WHERE subject = 'Literature'
AND yr BETWEEN 1980 AND 1989

Only Presidents

Show all details of the presidential winners:

  • Theodore Roosevelt
  • Woodrow Wilson
  • Jimmy Carter
  • Barack Obama
SELECT * FROM nobel
 WHERE yr = 1970
  AND subject IN ('Cookery',
                  'Chemistry',
                  'Literature')
SELECT * FROM nobel
 WHERE  winner IN ('Theodore Roosevelt',
  'Woodrow Wilson',
  'Jimmy Carter',
  'Barack Obama')

John

Show the winners with first name John

SELECT winner FROM nobel
  WHERE winner LIKE 'John %'

Chemistry and Physics from different years

Show the Physics winners for 1980 together with the Chemistry winners for 1984.

SELECT *
FROM nobel
WHERE (subject='physics' AND yr=1980) OR
      (subject='chemistry' AND yr=1984)

Exclude Chemists and Medics

Show the winners for 1980 excluding the Chemistry and Medicine

SELECT *
FROM nobel
WHERE yr=1980 AND
  subject NOT IN ('Chemistry','Medicine')

Early Medicine, Late Literature

Show who won a 'Medicine' prize in an early year (before 1910, not including 1910) together with winners of a 'Literature' prize in a later year (after 2004, including 2004)

SELECT *
FROM nobel 
WHERE (subject='Medicine' and yr <1910) OR
      (subject='Literature' AND yr>=2004)

Harder Questions

Umlaut

Find all details of the prize won by PETER GRÜNBERG

The u in his name has an umlaut. You may find this link useful https://en.wikipedia.org/wiki/%C3%9C#Keyboarding
SELECT *
FROM nobel 
WHERE winner in ('Peter Grünberg')

Apostrophe

Find all details of the prize won by EUGENE O'NEILL

You can't put a single quote in a quote string directly. You can use two single quotes within a quoted string.
SELECT *
FROM nobel 
WHERE winner in ('Eugene O''Neill')

Knights of the realm

Knights in order

List the winners, year and subject where the winner starts with Sir. Show the the most recent first, then by name order.

SELECT winner, yr, subject
FROM nobel 
WHERE winner LIKE 'Sir%'
ORDER BY yr DESC, winner

Chemistry and Physics last

The expression subject IN ('Chemistry','Physics') can be used as a value - it will be 0 or 1.

Show the 1984 winners and subject ordered by subject and winner name; but list Chemistry and Physics last.

SELECT winner, subject, subject IN ('Physics','Chemistry')
  FROM nobel
 WHERE yr=1984
 ORDER BY subject,winner
select winner, subject
from nobel
where yr=1984
order by subject in ('Physics','Chemistry'),subject,winner