要检索Salesforce_Account表的前10行,我们可以简单地执行以下DataFrame方法: Scala 复制 // Create a DataFrame from the data in the "salesforce_account" table. val dfAccount = session.table("salesforce_account") // To print out the first 10 rows, call: dfAccount.show() 1. 2. 3. 4. Snow...
因此，解决方案只是切换两个 Dataframe ，这样您就可以获得maindf中不存在的新记录
To support SnowPark in Narwhals, we need to ingredients: how do we tell if an object is a snowpark dataframe? Do you have an isinstance command we can run? (for example, to check if an object is pandas dataframe, we do isinstance(obj, pd.DataFrame), where pd is imported lazily) ho...
DataFrame.map provides an equivalent for the map function for example df.map(func,input_types=[StringType(),StringType()],output_types=[StringType(),IntegerType()],to_row=True) DataFrame.simple_map if a simple lambda like lambda x: x.col1 + x.col2 is used this functions can be used...
>>># Create a DataFrame with the "id" and "name" columns from the "sample_product_data" table.>>># This does not execute the query.>>>df=session.table("sample_product_data").select(col("id"),col("name"))>>># Send the query to the server for execution and>>># return a list...
// Create a DataFrame from the data in the "salesforce_account" table. val dfAccount = session.table("salesforce_account") // To print out the first 10 rows, call: dfAccount.show() 1. 2. 3. 4. Snowpark会把代码转换成SQL语句并交给Snowflake执行: ...