我們可以從數據現有的表中pyspark創建新表

Question

創建表的語法Teradat

Create table <DBname>.<Tablename> as select * from <DBname>.<Tablename> with data.

類似的方式，我們如何能在SPARK SQL創建表。

Answer 1

它在Spark SQL中也幾乎相同。

實施例：

CREATE TABLE tablename 
    STORED AS PARQUET LOCATION 'some/location/incase/of/external/table' 
AS 
SELECT * 
    FROM source_table 
WHERE 1=1 

正則表達式：（高電平）

CREATE [TEMPORARY] [EXTERNAL] TABLE [IF NOT EXISTS] [db_name.]table_name 
    [(col_name data_type [COMMENT col_comment], ...)] 
    [COMMENT table_comment] 
    [ 
    [ROW FORMAT row_format] 
    [STORED AS file_format] 
    ] 
    [LOCATION path_to_save] 
    [AS select_statement] 

順便說一句，火花支持更多的配置單元語法和特徵。你可以參考CTAS doc here