使用 SQL 查询 Delta Lake 表

要查询 Delta Lake 表，请使用标准 SQL SELECT 语法：

[ WITH with_query [, ...] ]SELECT [ ALL | DISTINCT ] select_expression [, ...]
[ FROM from_item [, ...] ]
[ WHERE condition ]
[ GROUP BY [ ALL | DISTINCT ] grouping_element [, ...] ]
[ HAVING condition ]
[ { UNION | INTERSECT | EXCEPT } [ ALL | DISTINCT ] select ]
[ ORDER BY expression [ ASC | DESC ] [ NULLS FIRST | NULLS LAST] [, ...] ]
[ OFFSET count [ ROW | ROWS ] ]
[ LIMIT [ count | ALL ] ]

有关 SELECT 语句的更多信息，请参阅 Athena 文档中的 SELECT。

Delta Lake 格式会存储每个数据文件每列的最小值和最大值。Athena 利用该信息在谓词上启用文件跳过，以消除不需要的文件。