How does computed calculate dynamically bound properties?

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Mar.19,2021
The attribute corresponding to

computed cannot be defined in data. If you write this, you should report an error.
you can directly process it in action or mutation in store and return it to .vue file

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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-64f5-1e43e21-6640e.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
MySQL Errno : 1021
Message : Disk full (/tmp/#sql-temptable-64f5-1e43e21-6640e.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
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