cockroachdb / cockroachdb/cockroach

sql: infinite loop with recursive common table expression

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#93,368 1 commento 0 reazioni 0 assegnatari Vedi su GitHub
C-bug O-pg-regress T-sql-queries
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Descrizione

The following query causes CockroachDB to loop forever delivering results to the client:

```
WITH RECURSIVE x (n) AS (SELECT 1 UNION ALL SELECT count(*) FROM x) SELECT * FROM x;
```

Postgres rejects this query outright:

```
jordan=# WITH RECURSIVE x (n) AS (SELECT 1 UNION ALL SELECT count(*) FROM x) SELECT * FROM x;
ERROR: aggregate functions are not allowed in a recursive query's recursive term
LINE 1: ...ITH RECURSIVE x (n) AS (SELECT 1 UNION ALL SELECT count(*) F...
```

Jira issue: CRDB-22287

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