How to remove underscores and retain placeholder in TextField in Flutter

looked at the official documents and found that the official said that deleting the underscore is done by setting null by decoration, but the placeholder of TextField is also done through decoration, so how to have both?

Mar.28,2021

found

decoration: InputDecoration(
 border: InputBorder.none,
 hintText: '',
)
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-64f5-1e5b133-455fe.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
MySQL Errno : 1021
Message : Disk full (/tmp/#sql-temptable-64f5-1e5b133-455fe.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
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