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Old October 13th, 2013, 12:34 PM
DeanSQL DeanSQL is offline
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Why does this NOT work?

I want to select the second highest value in a database containing a populations column. If I merely wanted to select the highest, I would use:

Code:
-- SELECT MAX(population) from city;


Lets take a step back and say we wanted to work not from a complete population list, but rather, a list with the top two

Code:
SELECT population FROM city ORDER BY population DESC LIMIT 2;


Both codes work independently. If I insert the second code into the first code by way of sub-query, I should get the second highest value, i.e.:
Code:
 SELECT MAX(SELECT population FROM city ORDER BY population ASC LIMIT 2) from city;


...and yet I receive a syntax error??!

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Old January 30th, 2017, 04:52 AM
Rashmi.Padia Rashmi.Padia is offline
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Why does this NOT work?

Hi,

Using Your last code query not working, that get error,
you can use these subQuery is,

Code:
SELECT population
FROM city
WHERE population = (
 SELECT MAX(population) 
        FROM city ORDER BY population ASC LIMIT 2
);


Thanks,

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