在BigQuery中,array_agg是一种聚合函数,用于将多个行中的值聚合为一个数组。取消嵌套是指在使用array_agg函数时,将结果展开为扁平的数组,而不是嵌套的数组结构。 array_agg的取消嵌套可以通过使用UNNEST函数来实现。UNNEST函数将嵌套的数组展开为扁平的结果集。通过将array_agg函数的结果作为UNNEST函数的输入,可以取消...
在BigQuery中,迭代ARRAY<JSON>是指对一个包含JSON对象的数组进行迭代操作。ARRAY<JSON>是BigQuery中的一种数据类型,表示一个包含多个JSON对象的数组。 迭代ARRAY<JSON>可以通过使用UNNEST函数来实现。UNNEST函数可以将数组展开为多行数据,从而可以对每个JSON对象进行操作。在迭代过程中,可以使用JSON函数来访问和操作JSON对...
检查BigQuery ARRAY 中是否有多个元素 hse*_*bie 3 arrays google-bigquery 对于bigquery标准sql我正在尝试找出适当的语法来查找数组是否包含 2 个或更多字符串元素。例如,如果数组 = ["5","6","7","8"]期望的情况是这样的,case "7" OR "8" in unnest(myArray) WHEN TRUE THEN 'value is in array' ...
The ARRAY_REVERSE function in BigQuery is a simple yet powerful tool for reversing the order of elements in an array. It can be useful when you need toinvert data sequences for analysis, such as reversing time series data or the order of operations in a process. The ability to reverse a...
UNNEST( array_expression )|UNNEST( array_path )|array_path } [ as_alias ] [ WITH OFFSET [ as_alias ] ] as_alias: [AS] alias 由此可知我们可以将 array 用 UNNEST 展开形成一个新的表类似于 array => table, 通常情况下会生成一列 字段我们可以直接用 as 指定。而这一列的内容就是数组里的每...
Error: Cannot access field page on a value with type ARRAY<STRUCT<hitNumber INT64, time INT64, hour INT64, ...>> at [4:8] 发布于 2 月前 ✅ 最佳回答: UNNEST()只是将数组转换为一个关系。它不会自动将该关系与主表连接起来。只有当您执行类似FROM `vdxl-prod-data-reporting-01.200759185....
SELECT [(select struct(dd.Level as Level, dd.TypeId as typeid) from unnest(dd.Skills) as dd )] as skills FROM tablee dd Run Code Online (Sandbox Code Playgroud) 但有一个例外:Scalar subquery produced more than one elementSer*_*ron 5 尝试使用ARRAY而不是[]: SELECT ARRAY(select ...
UNNEST: This function is used to expand an array into a set of rows. It takes an array column and returns a row for each element in the array. array_column:This is the name of the column that contains array data. AS element: This assigns an alias (element) to each element in the ...
我尝试了你的建议,但是BigQuery给了我一个错误提示:"Values referenced in UNNEST must be arrays. UNNEST contains expression of type STRUCT<destination ARRAY<STRING>, visitors ARRAY<STRING>>"(“在UNNEST中引用的值必须是数组。UNNEST包含类型为STRUCT<destination ARRAY<STRING>, visitors ARRAY<STRING>>的...
SELECT col1, col2, ARRAY(SELECT x FROM UNNEST(arr) AS x ORDER BY x) AS arr FROM MyTable; 这会按值对 arr 的元素进行排序。 如果您确实有一个结构体类型的数组,例如 ARRAY<STRUCT>,您可以按结构体字段之一进行排序: SELECT col1, col2, ARRAY(SELECT x FROM UNNEST(arr) AS x ORDER BY a...