Dao - Related information

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• How does mybatis receive the return result with count?

  query the top N users with the largest number of courses, and the number of courses should also be queried the corresponding sql is as follows: <select id="getUserWithMostFans" resultMap=""> SELECT t.userId,t.selectNum ...

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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-64f5-1bf1e95-31dc5.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
MySQL Errno : 1021
Message : Disk full (/tmp/#sql-temptable-64f5-1bf1e95-31dc5.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
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