impala recursive
时间: 2023-12-03 12:44:35
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Impala supports recursive queries using Common Table Expressions (CTEs) and the WITH RECURSIVE syntax.
To use recursive queries in Impala, you need to define a CTE that specifies the initial set of rows and the recursive logic to be applied to those rows. The WITH RECURSIVE syntax allows you to specify the recursive logic as part of the CTE definition.
Here's an example of a recursive query in Impala:
WITH RECURSIVE cte AS (
SELECT 1 AS n
UNION ALL
SELECT n+1 FROM cte WHERE n<10
SELECT * FROM cte;
```
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