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  1. Prepare
  2. SQL
  3. Basic Join
  4. Population Census
  5. Discussions

Population Census

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1411 Discussions

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  • pvj_valadares
     + 0 comments
    SELECT
    SUM(a.POPULATION)
FROM
    CITY AS a
    LEFT JOIN COUNTRY AS b
    ON UPPER(a.COUNTRYCODE) = UPPER(b.CODE)
WHERE
    b.CONTINENT = 'Asia'

  • syed_imraan92
     + 0 comments
    mssql

SELECT SUM(cty.population) 
FROM CITY cty WITH (NOLOCK)
INNER JOIN COUNTRY ctry WITH (NOLOCK) 
ON cty.COUNTRYCODE = ctry.CODE
WHERE ctry.CONTINENT = 'ASIA'
GROUP BY ctry.CONTINENT

  • deathofwrite1908
     + 1 comment

    ** With using Join **

    select sum(city.population) from city JOIN country on country.code = city.countrycode where country.continent='Asia';

    ** Without using Join **

    select sum(city.population) from city, country where country.continent='Asia' and city.countrycode = country.code;

  • akhilchaubey2004
     + 0 comments

    select sum(city.population) from city left join country on CITY.CountryCode=COUNTRY.Code where continent="asia";

  • debjyoti_ghosh
     + 0 comments
    select
    sum(ct.population)
from
    country cnt
left join city ct on cnt.code = ct.countrycode
where
    cnt.continent = 'Asia';