[英]Amazon Athena supported SQL Query to Count rows of few Tables
您可以UNION
多个查询的结果,例如:
SELECT 'T2' as TableName, COUNT(*), MAX(DATE) FROM t2
UNION ALL
SELECT 'T3' as TableName, COUNT(*), MAX(DATE) FROM t3
UNION ALL
SELECT 'T4' as TableName, COUNT(*), MAX(DATE) FROM t4
UNION ALL
SELECT 'T5' as TableName, COUNT(*), MAX(DATE) FROM t5
UNION ALL
SELECT 'T7' as TableName, COUNT(*), MAX(DATE) FROM t7
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