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SQL Server??????

?SQL Server??????????????????????????????????????????T-SQL??????????????

?????????????????????SQL Server????????????

CREATE USER [username] WITHOUT LOGIN

?????????username??????????????????????????????????????????CREATE USER?????WITH LOGIN???

CREATE USER [username] WITH LOGIN

????????????????????????????????

ALTER USER [username] WITH PASSWORD '[new_password]'

???????[new_password]????SQL Server??????????????????????????????????????????????????????

ALTER USER [username] MODIFY LOGIN

???????????????????????

DELETE USER [username]

????????????SQL Server?????????????????????????????????????????????????????

?????????????SQL Server???????????????????????????????????????

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