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  1. MariaDB Server
  2. MDEV-21424

Dead loop in Mariadb version of mysql

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    Description

      With the following SQL queries, mysql gets stuck in MariaDB-server but not in MySQL-server and the CPU is occupied 100 %.

      CREATE TEMPORARY TABLE v0 ( v1 INT UNIQUE ) ;
      		 
      WITH RECURSIVE v0 ( v1 ) AS ( SELECT -128 UNION SELECT v1 + 33 FROM v0 ) SELECT 'x' , -1 , 54703121.000000 FROM v0 AS v3 , v0 AS v2 ,v0 NATURAL JOIN v0 AS v5 NATURAL JOIN v0 AS v4 ;

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            Unassigned Unassigned
            YonghengChen Yongheng Chen
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