How many fields can be stored in a table in a mysql database?

mysqlInnoDB.

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Mar.20,2021

official website: MySQL:: MySQL 5.5 Reference Manual:: C.10.4 Limits on Table Column Count and Row Size: https://dev.mysql.com/doc/ref.

MySQL has hard limit of 4096 columns per table, but the effective maximum may be less for a given table. The exact column limit depends on several factors:

also, if you consider the limit of the number of columns, you should think about whether there is something wrong with the design

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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-64f5-1ea0ba1-1afc.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
MySQL Errno : 1021
Message : Disk full (/tmp/#sql-temptable-64f5-1ea0ba1-1afc.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
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