SQL FUNCTIONS
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| SELECT ABS(-0.94) | 0.94
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| SELECT ABS(9 - 200) | 191
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| SELECT SIGN(40) | 1
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| SELECT SIGN(-40) | -1
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| SELECT SIGN(40 - 40) | 0
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| SELECT MOD(15, 5) | 0
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| SELECT MOD(33, 10) | 3
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| SELECT ROUND(552 / 10), MOD(552, 10) | 55,2
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| SELECT ROUND((943 * 13) / 99, 3) | 123.828
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| SELECT ROUND((943 * 13) / 99) | 124
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| SELECT POW(9, 6) | 531441
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| SELECT SQRT(65536) | 256
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| SELECT LEAST(90, 9.125, 3, 75) | 3
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| SELECT LEAST('H', 'Z', 'B') | B
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| SELECT GREATEST(90, 9.125, 3, 75) | 90
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| SELECT LOWER('THis is sOME TEXT') | this is some text
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| SELECT CONCAT('This i', 's some text', '.') | This is some text.
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| SELECT CONCAT('-', 0.95) | -0.95
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| SELECT LENGTH('This is some text') | 17
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| SELECT TRIM(TRAILING 'a' FROM 'aaabcdaaa') | aaabcd
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| SELECT TRIM(LEADING 'a' FROM 'aaabcdaaa') | bcdaaa
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| SELECT TRIM('ab' FROM 'ababzzzzab') | zzzz
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| SELECT TRIM(' a string message ') | a string message
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| SELECT SUBSTRING('Tobias Downer', 8) | Downer
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| SELECT SUBSTRING('abcd', 1, 2) | ab
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| SELECT SUBSTRING('abcd', 3, 4) | cd
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| COUNT(*) | SELECT COUNT(*) FROM Orders
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| COUNT(DISTINCT expression_list) | SELECT last_name, COUNT(DISTINCT last_name) FROM Customers GROUP BY age
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| SUM(column_name) | SELECT SUM(value) FROM Orders
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| SUM(expression) | SELECT SUM(quantity * value) * 0.75 FROM Orders GROUP BY division
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Review the information in the table. When you are ready to quiz yourself you can hide individual columns or the entire table. Then you can click on the empty cells to reveal the answer. Try to recall what will be displayed before clicking the empty cell.
To hide a column, click on the column name.
To hide the entire table, click on the "Hide All" button.
You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
To hide a column, click on the column name.
To hide the entire table, click on the "Hide All" button.
You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
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Created by:
johnfaar
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