Question

在PostgreSQL中，我想做类似的事情

WITH vars AS %s
SELECT * FROM table2
   INNER JOIN table1 ON table2.t1id = table1.id
   WHERE table1.var in (select * from vars)
   AND table2.var in (select * from vars)

然后将%s作为ARRAY参数传递。有什么合理的方法可以做到这一点吗？

Answer 1

您可以使用VALUES，例如：

WITH vars
     (var)
AS
(
VALUES (1),
       (2),
       (3)
)
...
WHERE ... nmuloc IN (SELECT var
                            FROM vars) ...

或unnest()：

WITH vars
     (var)
AS
(
SELECT unnest('{1,2,3}'::integer[])
)
...
WHERE ... nmuloc IN (SELECT var
                            FROM vars) ...

db<>fiddle

但是您也可以将数组直接与= ANY一起使用：

WHERE ... nmuloc = ANY('{1,2,3}'::integer[]) ...

我可以将数组参数传递给CTE吗？

1 个答案: