Question

我有一个带有多个WITH子句的查询，然后是一个CREATE TABLE：

    WITH TABLE_1 AS (
        SELECT * FROM SOMEWHERE_1
    ), TABLE_2 AS (
        SELECT * FROM SOMEWHERE_2

    (
        CREATE TABLE TABLE_3 AS
        (
            SELECT TABLE_1.*, TABLE_2.*
            FROM TABLE_1 
            INNER JOIN TABLE_2 ON TABLE_2.key = TABLE_1.key
        )
    )

但是我遇到以下错误：

遇到：创建期望：选择，值和原因：异常：语法错误

所以我尝试将CREATE语句放在第一位：

    CREATE TABLE_3 AS
    (
        WITH TABLE_1 AS (
            SELECT * FROM SOMEWHERE_1
        ), TABLE_2 AS (
            SELECT * FROM SOMEWHERE_2

        (
            SELECT TABLE_1.*, TABLE_2.*
            FROM TABLE_1 
            INNER JOIN TABLE_2 ON TABLE_2.key = TABLE_1.key
        )
    )

但是现在我遇到以下错误：

AnalysisException：无法解析表引用：'TABLE_1'

请注意：

上面的查询在没有“ CREATE”语句的情况下起作用
我现在的情况比这个simpe示例要复杂得多，为了清楚起见，我想保留WITH语句。

Answer 1

嗯。我认为这会起作用：

CREATE TABLE TABLE_3 AS
    WITH TABLE_1 AS (
          SELECT * FROM SOMEWHERE_1
         ),
         TABLE_2 AS (
          SELECT * FROM SOMEWHERE_2
         )
    SELECT TABLE_1.*, TABLE_2.*
    FROM TABLE_1 INNER JOIN
         TABLE_2
         ON TABLE_2.key = TABLE_1.key;

当然，您还会遇到其他问题，例如结果中的key列重复出现-这会产生另一个错误。实际上，您应该准确选择所需的列。

Answer 2

或者，您也可以...

WITH TABLE_1 AS (
      SELECT * FROM SOMEWHERE_1
     ),
     TABLE_2 AS (
      SELECT * FROM SOMEWHERE_2
     )
SELECT TABLE_1.*, TABLE_2.* INTO TABLE_3
FROM TABLE_1 INNER JOIN
     TABLE_2
     ON TABLE_2.key = TABLE_1.key

强烈建议始终准备好DDL并运行INSERT INTO TABLE SELECT * FROM CTE

Impala-WITH子句之后的CREATE TABLE

2 个答案: