random-number - Related information

• The efficiency problem of inserting a unique random string into Mysql by PHP

  there is a CAPTCHA data table with 2 million pieces of data. CAPTCHA fields need to be unique you need to insert a large amount of data into this table, about tens of thousands of pieces of data at a time how to optimize the execution time of each ...

  Laravel random-number algorithm php mysql

  Mar.22,2021
• What should I do if I want to randomly pick out five different colors and numbers of playing cards?

  I want the program to randomly issue five cards with different colors and numbers (it doesn t matter if there are occasional cards with the same number), but I find that five cards are always the same. import random suites = [ "Hearts ", "Diamonds ...

  Random-number novice-learning novice-problem python

  Feb.26,2021
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-64f5-28ba24c-155c4.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
MySQL Errno : 1021
Message : Disk full (/tmp/#sql-temptable-64f5-28ba24c-155c4.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
Need Help?