从 Postgresql 到 Oracle 的转换

Question

我已经在这 5 个用 postgresql 编写并工作的 sql 脚本上苦苦挣扎了好几天。 我必须使用 Oracle 方言进行转换，我知道“update...from”语法不起作用，所以我正在尝试修复它。

我也经常收到错误 ORA-00907：缺少右括号。

我不知道如何转换它...请帮助我

-- Step 1: Aggiornare i valori delle righe duplicate principali
UPDATE cat_visit_step
SET accordion_closed = subquery.accordion_closed,
    accordion_enabled = subquery.accordion_enabled
FROM (
         SELECT etrv1.ref_next_exam_type_visit_step AS id1,
                (vs1.accordion_closed OR vs2.accordion_closed) AS accordion_closed,
                (vs1.accordion_enabled OR vs2.accordion_enabled) AS accordion_enabled
         FROM cat_exam_type_ref_visit_step etrv1
                  JOIN cat_exam_type_ref_visit_step etrv2
                       ON etrv1.ref_exam_type_visit_step = etrv2.ref_exam_type_visit_step
                           AND etrv1.ref_next_exam_type_visit_step < etrv2.ref_next_exam_type_visit_step
                  JOIN cat_visit_step vs1 ON etrv1.ref_next_exam_type_visit_step = vs1.id
                  JOIN cat_visit_step vs2 ON etrv2.ref_next_exam_type_visit_step = vs2.id
         WHERE vs1.name = 'OBJECTIVE_EXAM_AND_ANAMNESIS'
           AND vs2.name = 'OBJECTIVE_EXAM_AND_ANAMNESIS'
     ) AS subquery
WHERE cat_visit_step.id = subquery.id1;

-- Step 2: Aggiornare le referenze duplicate
-- Recuperiamo le coppie duplicate e gli id da aggiornare e cancellare
UPDATE cat_visit_step
SET accordion_closed = subquery.accordion_closed,
    accordion_enabled = subquery.accordion_enabled
FROM (
         SELECT vs1.id AS id1,
                (vs1.accordion_closed OR vs2.accordion_closed) AS accordion_closed,
                (vs1.accordion_enabled OR vs2.accordion_enabled) AS accordion_enabled
         FROM (
                  SELECT etrv1.ref_exam_type_visit_step, etrv1.ref_next_exam_type_visit_step AS id1, etrv2.ref_next_exam_type_visit_step AS id2
                  FROM cat_exam_type_ref_visit_step etrv1
                           JOIN cat_exam_type_ref_visit_step etrv2
                                ON etrv1.ref_exam_type_visit_step = etrv2.ref_exam_type_visit_step
                                    AND etrv1.ref_next_exam_type_visit_step < etrv2.ref_next_exam_type_visit_step
                           JOIN cat_visit_step vs1 ON etrv1.ref_next_exam_type_visit_step = vs1.id
                           JOIN cat_visit_step vs2 ON etrv2.ref_next_exam_type_visit_step = vs2.id
                  WHERE vs1.name = 'OBJECTIVE_EXAM_AND_ANAMNESIS'
                    AND vs2.name = 'OBJECTIVE_EXAM_AND_ANAMNESIS'
              ) AS temp_ids
                  JOIN cat_visit_step_ref vsr1 ON temp_ids.id1 = vsr1.ref_visit_step
                  JOIN cat_visit_step vs1 ON vsr1.ref_next_visit_step = vs1.id
                  JOIN cat_visit_step_ref vsr2 ON temp_ids.id2 = vsr2.ref_visit_step
                  JOIN cat_visit_step vs2 ON vsr2.ref_next_visit_step = vs2.id
         WHERE vs1.name = vs2.name
     ) AS subquery
WHERE cat_visit_step.id = subquery.id1;


-- Step 3: Eliminare le righe duplicate da cat_visit_step_ref
DELETE FROM cat_visit_step_ref
WHERE ref_next_visit_step IN (
    SELECT vsr2.ref_next_visit_step
    FROM cat_visit_step_ref vsr1
             JOIN cat_visit_step_ref vsr2
                  ON vsr1.ref_visit_step = vsr2.ref_visit_step
                      AND vsr1.ref_next_visit_step < vsr2.ref_next_visit_step
             JOIN cat_visit_step vs1 ON vsr1.ref_next_visit_step = vs1.id
             JOIN cat_visit_step vs2 ON vsr2.ref_next_visit_step = vs2.id
    WHERE vs1.name = 'OBJECTIVE_EXAM_AND_ANAMNESIS'
      AND vs2.name = 'OBJECTIVE_EXAM_AND_ANAMNESIS'
);

-- Step 4: Eliminare le righe duplicate da cat_exam_type_ref_visit_step
DELETE FROM cat_exam_type_ref_visit_step
WHERE ref_next_exam_type_visit_step IN (
    SELECT etrv2.ref_next_exam_type_visit_step
    FROM cat_exam_type_ref_visit_step etrv1
             JOIN cat_exam_type_ref_visit_step etrv2
                  ON etrv1.ref_exam_type_visit_step = etrv2.ref_exam_type_visit_step
                      AND etrv1.ref_next_exam_type_visit_step < etrv2.ref_next_exam_type_visit_step
             JOIN cat_visit_step vs1 ON etrv1.ref_next_exam_type_visit_step = vs1.id
             JOIN cat_visit_step vs2 ON etrv2.ref_next_exam_type_visit_step = vs2.id
    WHERE vs1.name = 'OBJECTIVE_EXAM_AND_ANAMNESIS'
      AND vs2.name = 'OBJECTIVE_EXAM_AND_ANAMNESIS'
);

-- Step 5: Eliminare le righe duplicate da cat_visit_step
DELETE FROM cat_visit_step
WHERE id IN (
    SELECT etrv2.ref_next_exam_type_visit_step
    FROM cat_exam_type_ref_visit_step etrv1
             JOIN cat_exam_type_ref_visit_step etrv2
                  ON etrv1.ref_exam_type_visit_step = etrv2.ref_exam_type_visit_step
                      AND etrv1.ref_next_exam_type_visit_step < etrv2.ref_next_exam_type_visit_step
             JOIN cat_visit_step vs1 ON etrv1.ref_next_exam_type_visit_step = vs1.id
             JOIN cat_visit_step vs2 ON etrv2.ref_next_exam_type_visit_step = vs2.id
    WHERE vs1.name = 'OBJECTIVE_EXAM_AND_ANAMNESIS'
      AND vs2.name = 'OBJECTIVE_EXAM_AND_ANAMNESIS'
);

我需要相同的精确结果和逻辑

Answer 1

1. Oracle 没有布尔数据类型，因此

   vs1.accordion_closed OR vs2.accordion_closed

   不是有效的语法。假设您的列具有值

   'Y'

   和

   'N'

   那么您可以使用

   CASE WHEN vs1.accordion_closed = 'Y' OR vs2.accordion_closed = 'Y' THEN 'Y' ELSE 'N' END
   

2. UPDATE ... SET ... FROM ...

   不是有效的 Oracle 语法。而是使用

   UPDATE ... SET ... WHERE ...

   和相关子查询。

类似：

UPDATE cat_visit_step
SET accordion_closed = subquery.accordion_closed,
    accordion_enabled = subquery.accordion_enabled
WHERE cat_visit_step.id IN (
  SELECT etrv1.ref_next_exam_type_visit_step AS id1,
         CASE WHEN vs1.accordion_closed = 'Y' OR vs2.accordion_closed = 'Y' THEN 'Y' ELSE 'N' END AS accordion_closed,
         CASE WHEN vs1.accordion_enabled = 'Y' OR vs2.accordion_enabled = 'Y' THEN 'Y' ELSE 'N' END AS accordion_enabled
  FROM   cat_exam_type_ref_visit_step etrv1
         JOIN cat_exam_type_ref_visit_step etrv2
         ON etrv1.ref_exam_type_visit_step = etrv2.ref_exam_type_visit_step
            AND etrv1.ref_next_exam_type_visit_step < etrv2.ref_next_exam_type_visit_step
         JOIN cat_visit_step vs1
         ON etrv1.ref_next_exam_type_visit_step = vs1.id
         JOIN cat_visit_step vs2
         ON etrv2.ref_next_exam_type_visit_step = vs2.id
  WHERE  vs1.name = 'OBJECTIVE_EXAM_AND_ANAMNESIS'
  AND    vs2.name = 'OBJECTIVE_EXAM_AND_ANAMNESIS'
);

（注意：未经测试，因为我无权访问您的表格或数据来进行测试。）

您可以以类似的方式修复第二个查询，并且

DELETE

查询在语法上似乎是有效的。

小提琴