Assignment_02/original_query.sql at main · vmikhailishyna/Assignment_02 · GitHub

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use assignment02;
show tables;
select * from dataset_med;

explain analyze
SELECT
    fp.cancer_stage,
    fp.treatment_type,
    (SELECT COUNT(*)
     FROM dataset_med p
     WHERE
         p.survived = 1
         AND p.asthma = 0
         AND p.cirrhosis = 0
         AND p.age > 40
         AND p.diagnosis_date > '2018-01-01'
         AND p.cancer_stage IS NOT NULL
         AND p.treatment_type IS NOT NULL
         AND p.cancer_stage = fp.cancer_stage
         AND p.treatment_type = fp.treatment_type) AS survivors_count,
    (SELECT AVG(p.bmi * 1.0)
     FROM dataset_med p
     WHERE
         p.survived = 1
         AND p.asthma = 0
         AND p.cirrhosis = 0
         AND p.age > 40
         AND p.diagnosis_date > '2018-01-01'
         AND p.cancer_stage IS NOT NULL
         AND p.treatment_type IS NOT NULL
         AND p.cancer_stage = fp.cancer_stage
         AND p.treatment_type = fp.treatment_type) AS avg_bmi,
    (SELECT AVG(p.cholesterol_level * 1.0)
     FROM dataset_med p
     WHERE
         p.survived = 1
         AND p.asthma = 0
         AND p.cirrhosis = 0
         AND p.age > 40
         AND p.diagnosis_date > '2018-01-01'
         AND p.cancer_stage IS NOT NULL
         AND p.treatment_type IS NOT NULL
         AND p.cancer_stage = fp.cancer_stage
         AND p.treatment_type = fp.treatment_type) AS avg_cholesterol,
    CASE
        WHEN (SELECT AVG(p.age * 1.0)
              FROM dataset_med p
              WHERE
                  p.survived = 1
                  AND p.asthma = 0
                  AND p.cirrhosis = 0
                  AND p.age > 40
                  AND p.diagnosis_date > '2018-01-01'
                  AND p.cancer_stage IS NOT NULL
                  AND p.treatment_type IS NOT NULL
                  AND p.cancer_stage = fp.cancer_stage
                  AND p.treatment_type = fp.treatment_type) >= 60
            THEN 'elderly'
        WHEN (SELECT AVG(p.age * 1.0)
              FROM dataset_med p
              WHERE
                  p.survived = 1
                  AND p.asthma = 0
                  AND p.cirrhosis = 0
                  AND p.age > 40
                  AND p.diagnosis_date > '2018-01-01'
                  AND p.cancer_stage IS NOT NULL
                  AND p.treatment_type IS NOT NULL
                  AND p.cancer_stage = fp.cancer_stage
                  AND p.treatment_type = fp.treatment_type) BETWEEN 40 AND 59
            THEN 'middle-aged'
        ELSE 'young'
    END AS age_group
FROM
    (SELECT DISTINCT cancer_stage, treatment_type FROM dataset_med WHERE 1=1) fp
WHERE
    (SELECT COUNT(*)
     FROM dataset_med p
     WHERE
         p.survived = 1
         AND p.asthma = 0
         AND p.cirrhosis = 0
         AND p.age > 40
         AND p.diagnosis_date > '2018-01-01'
         AND p.cancer_stage IS NOT NULL
         AND p.treatment_type IS NOT NULL
         AND p.cancer_stage = fp.cancer_stage
         AND p.treatment_type = fp.treatment_type) > 10
ORDER BY
    survivors_count DESC, avg_bmi DESC;