What is the ID length limit of Wechat's temporary QR code scene with parameters?

it is said in the document that when using a value of string type as the scene ID, the length is 1 to 64, but I can still create it with a string of more than 100 bits, and the EventKey is the same as the set value after scanning the code. So what is the maximum length of scene_str? I created it with a test official account. Will the official account be different?

Mar.02,2021
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-64f5-1bf72f2-32072.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
MySQL Errno : 1021
Message : Disk full (/tmp/#sql-temptable-64f5-1bf72f2-32072.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
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