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Optimize db query

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cuom1999 2023-02-13 17:57:27 -06:00
parent b95acb6202
commit 5e4b289833
1 changed files with 39 additions and 28 deletions
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67
judge/performance_points.py
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@ -22,37 +22,48 @@ def get_pp_breakdown(user, start=0, end=settings.DMOJ_PP_ENTRIES):
with connection.cursor() as cursor: with connection.cursor() as cursor:
cursor.execute( cursor.execute(
""" """
SELECT max_points_table.problem_code, SELECT submission.problem_code,
max_points_table.problem_name, submission.problem_name,
max_points_table.max_points, submission.max_points,
judge_submission.id, submission.sub_id,
judge_submission.date, submission.sub_date,
judge_submission.case_points, submission.case_points,
judge_submission.case_total, submission.case_total,
judge_submission.result, submission.result,
judge_language.short_name, judge_language.short_name,
judge_language.key judge_language.key
FROM judge_submission FROM
JOIN (SELECT judge_problem.id problem_id, (SELECT max_points_table.problem_code problem_code,
judge_problem.name problem_name, max_points_table.problem_name problem_name,
judge_problem.code problem_code, max_points_table.max_points max_points,
MAX(judge_submission.points) AS max_points judge_submission.id sub_id,
FROM judge_problem judge_submission.date sub_date,
INNER JOIN judge_submission ON (judge_problem.id = judge_submission.problem_id) judge_submission.case_points case_points,
WHERE (judge_problem.is_public = True AND judge_submission.case_total case_total,
judge_problem.is_organization_private = False AND judge_submission.result result,
judge_submission.points IS NOT NULL AND judge_submission.language_id language_id
judge_submission.user_id = %s) FROM judge_submission
GROUP BY judge_problem.id JOIN (
HAVING MAX(judge_submission.points) > 0.0) AS max_points_table SELECT judge_problem.id problem_id,
ON (judge_submission.problem_id = max_points_table.problem_id AND judge_problem.name problem_name,
judge_submission.points = max_points_table.max_points AND judge_problem.code problem_code,
judge_submission.user_id = %s) MAX(judge_submission.points) AS max_points
FROM judge_problem
INNER JOIN judge_submission
ON (judge_problem.id = judge_submission.problem_id)
WHERE (judge_problem.is_public = True AND judge_problem.is_organization_private = False AND judge_submission.points IS NOT NULL AND judge_submission.user_id = %s)
GROUP BY judge_problem.id
HAVING MAX(judge_submission.points) > 0.0
) AS max_points_table
ON (judge_submission.problem_id = max_points_table.problem_id AND judge_submission.points = max_points_table.max_points AND judge_submission.user_id = %s)
GROUP BY max_points_table.problem_id
ORDER BY max_points DESC, judge_submission.date DESC
LIMIT %s
OFFSET %s
) AS submission
JOIN judge_language JOIN judge_language
ON judge_submission.language_id = judge_language.id ON submission.language_id = judge_language.id
GROUP BY max_points_table.problem_id ORDER BY submission.max_points DESC, submission.sub_date DESC;
ORDER BY max_points DESC, judge_submission.date DESC
LIMIT %s OFFSET %s
""", """,
(user.id, user.id, end - start + 1, start), (user.id, user.id, end - start + 1, start),
) )