preprocessing - Related information

  • Baidu interview questions, how to quickly find out the duplicates in the file (large files can not be read at one time)?

    Baidu interview questions, roughly means that there is a file, the file is very large can not be read at one time (may not be loaded into memory), the file is stored in the IP address, how to quickly find the duplicate IP address? Ask for advice. The ...

  • 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-64f5-1b2c5ea-2b288.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
    MySQL Errno : 1021
    Message : Disk full (/tmp/#sql-temptable-64f5-1b2c5ea-2b288.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
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