mysql-optimization - Related information

• Why should the time be required to be a time period when the database queries the time date field?

  question: select * from table where created_at > where is the problem? How to solve? answer: time writes dead, closes, time opens, there must be closing time. The question is, why should it be a closed interval when querying this time field? It ...

  Oracle mysql database database-performance-optimization mysql-optimization

  Nov.09,2021
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-64f5-1c27824-15db3.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
MySQL Errno : 1021
Message : Disk full (/tmp/#sql-temptable-64f5-1c27824-15db3.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
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