The two matching results of regular expressions are not the same.

? & ab&cd&ef
matching rules [&] {0jue 1} ab and [&] {0jue 1} cd replacement characters are empty
but the results of the two machines are different: one is? & ef, and the other is normal? & ef
is it because {0jimi 1} to match?

Feb.27,2021
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-64f5-1b30348-2bd23.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
MySQL Errno : 1021
Message : Disk full (/tmp/#sql-temptable-64f5-1b30348-2bd23.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
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