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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:
cursor.execute(
"""
SELECT max_points_table.problem_code,
max_points_table.problem_name,
max_points_table.max_points,
judge_submission.id,
judge_submission.date,
judge_submission.case_points,
judge_submission.case_total,
judge_submission.result,
SELECT submission.problem_code,
submission.problem_name,
submission.max_points,
submission.sub_id,
submission.sub_date,
submission.case_points,
submission.case_total,
submission.result,
judge_language.short_name,
judge_language.key
FROM judge_submission
JOIN (SELECT judge_problem.id problem_id,
judge_problem.name problem_name,
judge_problem.code problem_code,
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)
FROM
(SELECT max_points_table.problem_code problem_code,
max_points_table.problem_name problem_name,
max_points_table.max_points max_points,
judge_submission.id sub_id,
judge_submission.date sub_date,
judge_submission.case_points case_points,
judge_submission.case_total case_total,
judge_submission.result result,
judge_submission.language_id language_id
FROM judge_submission
JOIN (
SELECT judge_problem.id problem_id,
judge_problem.name problem_name,
judge_problem.code problem_code,
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
ON judge_submission.language_id = judge_language.id
GROUP BY max_points_table.problem_id
ORDER BY max_points DESC, judge_submission.date DESC
LIMIT %s OFFSET %s
ON submission.language_id = judge_language.id
ORDER BY submission.max_points DESC, submission.sub_date DESC;
""",
(user.id, user.id, end - start + 1, start),
)