如何解决查询详细信息时添加标题信息|这次是STRUCT
除了Adding up header information while querying detailed information
现在我有类似的要求，因为最后两个字段是STRUCT
SELECT 'ABC' username,cast('1234' as int64) QueryID,cast('100' as int64) CPU,cast('123' as int64) IO,[STRUCT(['DB1','DB2','DB1'] as DatabaseReferred,['TB1','TB2','TB3'] as TablesReferred)] Struct_DataType
UNION ALL
SELECT 'ABC' username,cast('8454' as int64) QueryID,cast('589' as int64) CPU,cast('565' as int64) IO,'DB2'] as DatabaseReferred,['TB3','TB6'] as TablesReferred)]
UNION ALL
SELECT 'ABC' username,cast('3564' as int64) QueryID,cast('145' as int64) CPU,cast('243' as int64) IO,[STRUCT(['DB3','DB5'] as DatabaseReferred,['TB4','TB3'] as TablesReferred)]
UNION ALL
SELECT 'PQR' username,cast('6352' as int64) QueryID,cast('737' as int64) CPU,cast('562' as int64) IO,[STRUCT(['DB2','DB1',['TB6','TB7','TB2'] as TablesReferred)]
UNION ALL
SELECT 'PQR' username,cast('2345' as int64) QueryID,cast('200' as int64) CPU,cast('126' as int64) IO,['TB5','TB1'] as TablesReferred)]
我正在寻找输出
Username Count(DistinctQueryID) Sum(CPU) SUM(IO) DistinctDatabaseReferred DistinctTablesReferred
ABC 3 834 931 4 5
PQR 2 937 688 2 5
解决方法
以下是用于BigQuery标准SQL
注意；我使用的是STRUCTS，因为它的名称和标题有问题（而数据样本-我希望是错误的-构造为结构数组
#standardSQL
WITH `project.dataset.table` AS (
SELECT 'ABC' username,CAST('1234' AS int64) QueryID,CAST('100' AS int64) CPU,CAST('123' AS int64) IO,STRUCT(['DB1','DB2','DB1'] AS DatabaseReferred,['TB1','TB2','TB3'] AS TablesReferred) Struct_DataType UNION ALL
SELECT 'ABC' username,CAST('8454' AS int64) QueryID,CAST('589' AS int64) CPU,CAST('565' AS int64) IO,'DB2'] AS DatabaseReferred,['TB3','TB6'] AS TablesReferred) UNION ALL
SELECT 'ABC' username,CAST('3564' AS int64) QueryID,CAST('145' AS int64) CPU,CAST('243' AS int64) IO,STRUCT(['DB3','DB5'] AS DatabaseReferred,['TB4','TB3'] AS TablesReferred) UNION ALL
SELECT 'PQR' username,CAST('6352' AS int64) QueryID,CAST('737' AS int64) CPU,CAST('562' AS int64) IO,STRUCT(['DB2','DB1',['TB6','TB7','TB2'] AS TablesReferred) UNION ALL
SELECT 'PQR' username,CAST('2345' AS int64) QueryID,CAST('200' AS int64) CPU,CAST('126' AS int64) IO,['TB5','TB1'] AS TablesReferred)
)
SELECT
Username,Count_of_Distinct_QueryId,Sum_CPU,Sum_IO,(SELECT COUNT(DISTINCT db) FROM t.dbs AS db) AS DistinctDatabaseReferred,(SELECT COUNT(DISTINCT tbl) FROM t.tbls AS tbl) AS DistinctTablesReferred
FROM (
SELECT -- *
Username,COUNT(DISTINCT QueryId) AS Count_of_Distinct_QueryId,SUM(CPU) AS Sum_CPU,SUM(IO) AS Sum_IO,ARRAY_CONCAT_AGG(Struct_DataType.DatabaseReferred) dbs,ARRAY_CONCAT_AGG(Struct_DataType.TablesReferred) tbls
FROM `project.dataset.table`
GROUP BY Username
) t
有输出
Row Username Count_of_Distinct_QueryId Sum_CPU Sum_IO DistinctDatabaseReferred DistinctTablesReferred
1 ABC 3 834 931 4 5
2 PQR 2 937 688 2 5
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