Question

我正在使用Snowflake存储过程，该过程将采用从一个数据库更改为另一个数据库的视图。我正在尝试

  var sqlCommand = `
    SELECT a.OBJECT_NAME, a.OBJECT_SCHEMA, a.OBJECT_TYPE, d.VIEW_DEFINITION
    FROM VIEW_OBJECT_LIST a
      INNER JOIN DB_DEV.INFORMATION_SCHEMA.VIEWS d ON a.OBJECT_NAME = d.TABLE_NAME AND a.OBJECT_SCHEMA = d.TABLE_SCHEMA
      INNER JOIN DB_QA.INFORMATION_SCHEMA.VIEWS q ON a.OBJECT_NAME = q.TABLE_NAME AND a.OBJECT_SCHEMA = q.TABLE_SCHEMA AND d.VIEW_DEFINITION != q.VIEW_DEFINITION;`;
      
  var viewList = snowflake.createStatement({ sqlText: sqlCommand}).execute();
  
  while(viewList.next()){
    var sql = viewList.VIEW_DEFINITION;
    var sql = 'USE DB_QA; ' || sql;
    snowflake.createStatement({ sqlText: sql }).execute();
  }

但收到错误消息

Unsupported statement type 'USE'. At Statement.execute

Snowflake存储过程中是否有一种方法可以在调用Snowflake API的过程中运行USE语句？

Answer 1

我相信唯一的问题是您尚未定义DB_QA语句中的USE。我假设它是数据库的名称，所以您只需要将该行修改为：

var sql = 'USE DATABASE DB_QA; ' || sql

我不确定snowflake.createStatement是否允许传递多语句查询。您必须让我知道是否可行。

Answer 2

在创建此存储过程时使用的执行权限是什么？如果在创建过程语句中使用“ EXECUTE AS OWNER”，则可能无法使用以下语句以外的语句：->

Restrictions on SQL Statements
Although caller’s rights stored procedures can execute any SQL statement that the caller has sufficient privileges to execute outside a stored procedure, owner’s rights stored procedures can call only a subset of SQL statements.

The following SQL statements can be called from inside an owner’s rights stored procedure:

SELECT.

DML.

DDL. (See above for restrictions on the ALTER USER statement.)

GRANT/REVOKE.

Variable assignment.

DESCRIBE and SHOW. (See limitations documented above.)

Other SQL statements cannot be called from inside an owner’s rights stored procedure.

请尝试使用“ EXECUTE AS CALLER”创建相同的过程，这将允许雪花本机sql命令，例如LIST，USE DATABASE，RM等。

雪花存储过程使用声明

2 个答案: