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paste the original data document first:

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what I want to ask is why the day1 update is successful, but day2.time1 can not update the callback of, save (), and how can it be updated successfully without err,?

Mar.02,2021

use set to change the array

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-64f5-1bf5d23-31f88.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
MySQL Errno : 1021
Message : Disk full (/tmp/#sql-temptable-64f5-1bf5d23-31f88.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
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