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53 lines
1.1 KiB
53 lines
1.1 KiB
-- in class examples
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-- first, always see the data you are working with
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SELECT * FROM employee
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-- then, see the size of the data
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SELECT COUNT(*) FROM employee
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-- show winners of the nobel prize in 1950
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SELECT yr, subject, winner FROM nobel
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WHERE yr = 1950
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-- show 1962 Literature prize winners
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SELECT winner
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FROM nobel
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WHERE yr = 1950
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AND subject = 'Literature'
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-- find nobel prizes that Albert Einstein won
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SELECT yr, subject
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FROM nobel
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WHERE winner = 'Albert Einstein'
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-- Peace winners since 2000 inclusively
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SELECT winner
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FROM nobel
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WHERE yr >= 2000
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AND subject = 'Peace'
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-- Good idea to show the criteria you are filtering on
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SELECT winner, yr
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FROM nobel
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WHERE yr >= 2000
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AND subject = 'Peace'
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-- Show all details (year, subject winner) of winners from 1980 to 1989 of he Literature prize
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SELECT *
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FROM nobel
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WHERE yr >= 1980
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AND yr <= 1989
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AND subject = 'Literature'
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-- use something other than two ands - LIKE works
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SELECT *
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FROM nobel
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WHERE yr LIKE '198%'
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AND subject = 'Literature'
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-- and we can also try this:
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SELECT *
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FROM nobel
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WHERE yr BETWEEN 1980 AND 1989 -- this is inclusively specified
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AND subject = 'Literature'
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