pivot on potgresql

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Wed Mar 23 2022 07:20:55 GMT+0000 (Coordinated Universal Time)

Saved by @Bambibo9799

CREATE EXTENSION IF NOT EXISTS tablefunc;

SELECT * FROM CROSSTAB($$
  WITH Country_Awards AS (
    SELECT
      Country,
      Year,
      COUNT(*) AS Awards
    FROM Summer_Medals
    WHERE
      Country IN ('FRA', 'GBR', 'GER')
      AND Year IN (2004, 2008, 2012)
      AND Medal = 'Gold'
    GROUP BY Country, Year)

  SELECT
    Country,
    Year,
    RANK() OVER
      (PARTITION BY Year
       ORDER BY Awards DESC) :: INTEGER AS rank
  FROM Country_Awards
  ORDER BY Country ASC, Year ASC;
-- Fill in the correct column names for the pivoted table
$$) AS ct (Country VARCHAR,
           "2004" INTEGER,
           "2008" INTEGER,
           "2012" INTEGER)

Order by Country ASC;

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