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EXPLAIN SYNTAX
SELECT *
FROM system.numbers AS a, system.numbers AS b, system.numbers AS c
Query id: 51eddd00-e00f-4eca-a801-7748c9cf94cf
┌─explain────────────────────────────┐
│ SELECT │
│ `--a.number` AS `a.number`, │
│ `--b.number` AS `b.number`, │
│ number AS `c.number` │
│ FROM │
│ ( │
│ SELECT │
│ number AS `--a.number`, │
│ b.number AS `--b.number` │
│ FROM system.numbers AS a │
│ CROSS JOIN system.numbers AS b │
│ ) AS `--.s` │
│ CROSS JOIN system.numbers AS c │
└────────────────────────────────────┘
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