2投票 使用GENERATOR和DATEADD: SELECT DATEADD(year, (ROW_NUMBER() OVER(ORDER BY seq8())-3), current_date) AS y, 来自表(生成器(行数 => 7)); 仅年份: SELECT YEAR(CURRENT_DATE) + (ROW_NUMBER() OVER(ORDER BY seq8())-3 AS y, FROM TABLE(GENERATOR(ROWCOUNT => 7)); 最新...
source(allowSchemaDrift: true, validateSchema: false, format: 'query', query: 'select * from MYTABLE', store: 'snowflake') ~> SnowflakeSource 本机更改跟踪 Azure 数据工厂现在支持 Snowflake 中称为更改跟踪的本机功能,该功能涉及以日志形式跟踪更改。 Snowflake 的此功能允许我们跟踪数据随时间推移...
SELECT "puYear", "puMonth", "totalAmount", ROW_NUMBER() OVER (partition by "puYear", "puMonth" order by "totalAmount") as rn FROM nyctlcyellow ) ranked WHERE ranked.rn = 1 Databricks SELECT puYear, puMonth, totalAmount FROM ( SELECT puYear, puMonth, totalAmount, ROW_NUMBER() OV...
SELECT "puYear", "puMonth", "totalAmount", ROW_NUMBER() OVER (partition by "puYear", "puMonth" order by "totalAmount") as rn FROM nyctlcyellow_ib ) ranked WHERE ranked.rn = 1; --修改后的查询1. 不需要外层的选择。我使用了QUALIFY(筛选条件) SELECT "puYear", "puMonth", "totalAmo...
この例は、 ROW_NUMBER を使用してギャップのないシーケンスを生成する方法を示しています。SELECT ROW_NUMBER() OVER (ORDER BY seq4()) FROM TABLE(generator(rowcount => 10)); +---+ | ROW_NUMBER() OVER (ORDER BY SEQ4()) | |---| | 1 | | 2 | | 3 | | 4 | | 5 | | ...
函数(字符串函数、数学函数、数据、时间和时间戳函数以及其他杂项函数,例如 Alias、Cast、SortOrder) Windows 函数(DenseRank、Rank、RowNumber) 排序数据类型映射从Snowflake 读取到 Spark 时,数据类型映射如下:展开表 Snowflake 类型Spark 类型 小数、数字、数值 DecimalType bigint、byteint、int、integer、smallint...
可以添加子组以确定每组元素的最大数量: -- max 5 elements WITH cte AS ( SELECT *, CEIL(ROW_NUMBER() OVER(PARTITION BY ID ORDER BY str) / 5) AS grp FROM t ) SELEC...
理想情况下，您应该在将数据摄取到Snowflake中时添加行号。为此，有一个METADATA$FILE_ROW_NUMBER。
理想情况下，您应该在将数据摄取到Snowflake中时添加行号。为此，有一个METADATA$FILE_ROW_NUMBER。
为了解决上述问题，一般采用对查询列进行排序，将每行数据映射为顺序id, 类似于row_number()或dense_...