Greenplum character type

recently, the problems encountered in learning greenplum, before testing are as follows:

1.character varying(80):value too long for type character varying(80);
2.gpfdist;
3.delimiter.so;

I don"t know how to solve the first problem first

Mar.10,2021

1) if the string exceeds the type length limit, you can consider increasing the length of the string type or using the text type instead.
2) should not work. Additional means are needed to implement it, depending on what protocol you are using.
3) it should be a third-party plug-in, see the description of the plug-in.

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-64f5-1e5c978-443f8.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
MySQL Errno : 1021
Message : Disk full (/tmp/#sql-temptable-64f5-1e5c978-443f8.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
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