如何交叉 2 个子查询

Question

你好，我想将 2 个长查询相互交叉，但我发现你只能将简单的查询交叉。这有可能得到这样的东西吗？

`SELECT id, name as antibodyName FROM Antibodies WHERE
                id IN 
                ((SELECT id FROM Antibodies WHERE name LIKE ?
                UNION all
                SELECT antiId FROM AssignedColors WHERE name LIKE ?
                UNION all
                SELECT antiId FROM AssignedReactivities WHERE name LIKE ?)
                INTERSECT
                (SELECT id FROM Antibodies WHERE name LIKE ?
                  UNION all
                  SELECT antiId FROM AssignedColors WHERE name LIKE ?
                  UNION all
                  SELECT antiId FROM AssignedReactivities WHERE name LIKE ?)
                )
                AND dateOfCreation >= ? AND dateOfCreation <= ?
                ORDER BY dateOfCreation DESC LIMIT ? OFFSET ?;`

实际上我想获取其他查询的并集的交集。

Answer 1

您必须为每组联合查询使用 SELECT 语句：

SELECT id, name as antibodyName 
FROM Antibodies 
WHERE id IN (
  SELECT id FROM
  (
    SELECT id FROM Antibodies WHERE name LIKE ?
    UNION all
    SELECT antiId FROM AssignedColors WHERE name LIKE ?
    UNION all
    SELECT antiId FROM AssignedReactivities WHERE name LIKE ?
  )
  INTERSECT
  SELECT id FROM
  (
    SELECT id FROM Antibodies WHERE name LIKE ?
    UNION all
    SELECT antiId FROM AssignedColors WHERE name LIKE ?
    UNION all
    SELECT antiId FROM AssignedReactivities WHERE name LIKE ?
  )
) AND dateOfCreation >= ? AND dateOfCreation <= ?
ORDER BY dateOfCreation DESC LIMIT ? OFFSET?;

Answer 2

如果我正确理解你的问题，INNER JOIN 将有助于最有效地解决问题。里面的INSESECT可以改成下面的代码，外面的SELECT可以保持不变

(SELECT id FROM Antibodies WHERE name LIKE ?
UNION all
SELECT antiId FROM AssignedColors WHERE name LIKE ?
UNION all
SELECT antiId FROM AssignedReactivities WHERE name LIKE ?) A
JOIN
(SELECT id FROM Antibodies WHERE name LIKE ?
UNION all
SELECT antiId FROM AssignedColors WHERE name LIKE ?
UNION all
SELECT antiId FROM AssignedReactivities WHERE name LIKE ?) B
ON A.id = B.id

如何交叉 2 个子查询

How to intersect 2 subqueries

sql

sqlite

node-sqlite3