Why does element ui's select automatically convert 0 to null?

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selected 0, its value is 0, but the display is empty, how to deal with this

Oct.05,2021

suggests using the decimal 0.0 or switching to the time format 0:00 0 will be judged as null or false in the judgment.

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-64f5-1ea9758-696cb.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
MySQL Errno : 1021
Message : Disk full (/tmp/#sql-temptable-64f5-1ea9758-696cb.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
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