возвратить дополнительную колонку с алгоритмом подсчета данных
Stack Overflow на русском Asked on February 14, 2021
Еще раз доброго дня!
ДАНО:
ЗАДАЧА:
Необходимо добавить 5-ую колонку "chage" в которой будут фиксироваться изменения в колонке
team в текущей игре относительно ее предыдущего матча.
Прошу помочь
ВИЗУАЛЬНЫЙ РЕЗУЛЬТАТ:
One Answer
Решение найдено:
SELECT
id,
match_date,
team,
score,
LEAD (team,0) OVER() - LAG (team) OVER () AS change
FROM matches
WHERE EXTRACT('year'FROM match_date) = 2017
Answered by Слово on February 14, 2021
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