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sp_addlogin (Transact-SQL)
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sp_addlogin [ @loginame = ] 'login'
    [ , [ @passwd = ] 'password' ]
    [ , [ @defdb = ] 'database' ]
    [ , [ @deflanguage = ] 'language' ]
    [ , [ @sid = ] sid ]
    [ , [ @encryptopt= ] 'encryption_option' ]
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[ @loginame = ] 'login'
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[ @passwd = ] 'password'
µÇ¼µÄÃÜÂë¡£password µÄÊý¾ÝÀàÐÍΪ sysname£¬Ä¬ÈÏֵΪ NULL¡£
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[ @defdb = ] 'database'
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[ @deflanguage = ] 'language'
µÇ¼µÄĬÈÏÓïÑÔ¡£language µÄÊý¾ÝÀàÐÍΪ sysname£¬Ä¬ÈÏֵΪ NULL¡£Èç¹ûδָ¶¨ language£¬ÔòеǼµÄĬÈÏ language ½«ÉèÖÃΪ·þÎñÆ÷µÄµ±Ç°Ä¬ÈÏÓïÑÔ¡£
[ @sid = ] 'sid'
°²È«±êʶºÅ (SID)¡£sid µÄÊý¾ÝÀàÐÍΪ varbinary(16)£¬Ä¬ÈÏֵΪ NULL¡£Èç¹û sid Ϊ NULL£¬Ôòϵͳ½«ÎªÐµÇ¼Éú³É SID¡£²»¹ÜÊÇ·ñʹÓà varbinary Êý¾ÝÀàÐÍ£¬NULL ÒÔÍâµÄÖµµÄ³¤¶È¶¼±ØÐëÕýºÃÊÇ 16 ¸ö×Ö½Ú£¬²¢ÇÒÒ»¶¨²»ÄÜÒѾ­´æÔÚ¡£Ö¸¶¨ sid ·Ç³£ÓÐÓã¬ÀýÈ磬Èç¹ûÄúÒª±àд½Å±¾£¬»ò½« SQL Server µÇ¼´Óһ̨·þÎñÆ÷ÒÆ¶¯µ½Áíһ̨·þÎñÆ÷£¬²¢ÇÒÏëÈõǼÔÚ²»Í¬·þÎñÆ÷ÉÏʹÓÃÏàͬµÄ SID£¬¶¼ÐèÒªÖ¸¶¨Ëü¡£
[ @encryptopt = ] 'encryption_option'
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