Problems with thinkphp5.17 federated query

this sql statement, under thinkphp5.17

tp


there is another problem. My sql statement is executed incorrectly. I can"t see the error statement in the tract panel or runtime log. I want to see what I did wrong and what I think.

Joint-query sql thinkphp5
Feb.28,2021

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MySQL Query : SELECT * FROM `codeshelper`.`v9_news` WHERE status=99 AND catid='6' ORDER BY rand() LIMIT 5
MySQL Error : Disk full (/tmp/#sql-temptable-64f5-1bedcba-31b93.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
MySQL Errno : 1021
Message : Disk full (/tmp/#sql-temptable-64f5-1bedcba-31b93.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
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