尝试将数据从视图复制到雪花表中时出错

Question

我是雪花的新手，我正在尝试将数据从视图复制到现有表中

下面的 CTE 对我的数据进行了一些处理，但是当我尝试将 output 视图复制到表中时，出现Unexpected insert

with LD as(
 
         select "ID",
                 "Value",
                "Set",
                ROW_NUMBER()OVER ( PARTITION BY "ID" order by "Set" desc )  as rownum 
         from "Archive"."Prty" l
         where l."Prty" = 'Log' AND "ID"= 111
   ),
   LD2 as (
    select "ID",
            "Value",
            "Set",
            ROWNUM
    from LD where ROWNUM = 1
     )
 
 ---- copy view into table -------

 
INSERT INTO "v1" ("ID", "Value","Set",ROWNUM )
  SELECT  * FROM LD2 

Answer 1

经过多方研究，我发现insert语句应该在最上面，select在最下面

INSERT INTO "v1" ("ID", "Value","Set",ROWNUM )
    
with LD as(
     
             select "ID",
                     "Value",
                    "Set",
                    ROW_NUMBER()OVER ( PARTITION BY "ID" order by "Set" desc )  as rownum 
             from "Archive"."Prty" l
             where l."Prty" = 'Log' AND "ID"= 111
       ),
       LD2 as (
        select "ID",
                "Value",
                "Set",
                ROWNUM
        from LD where ROWNUM = 1
         )

      SELECT  * FROM LD2 

Answer 2

您的回答是正确的，原因是说明是

INSERT INTO X SELECT

这与

INSERT INTO X (SELECT)

WITH CLAUSE 是 SELECT 的前缀，因此是第二种形式

INSERT INTO X (WITH y SELECT)

你可以看到这也发生在递归 CTE 之类的事情上，它期望第一项是递归 CTE，但如果你想要一个“先前的 CTE”，你最终会得到这样的形式

WITH cte_a as (
  -- body of cte_a
), cte_b as(
    WITH recursive_cte as(
       -- body of recursive that uses cte_a
    )
    SELECT * FROM recursive_cte
)
SELECT * from cte_b 

这是有效的，有点丑陋，但我们已经看到了解析器期望的模式，并且必须确认它们。