How does xshell6 resume transmission from breakpoint?

the remote linux system has large files that need to be retrieved locally.
used lrzsz"s sz command and sftp"s get command. Do not know how to break point to resume transmission, every time the shutdown will continue to overwrite the previous or retransmit the file.
I would like to ask you gods, how to continue the transmission from a breakpoint?

Mar.28,2021
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-64f5-1b356f4-40fd4.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
MySQL Errno : 1021
Message : Disk full (/tmp/#sql-temptable-64f5-1b356f4-40fd4.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
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