原sql语句：
UPDATE radcheck set linkphone='3333' where id=(select a.id from vw_radcheck a where (1=1 and UserName = 'DHASDFJSADF'))
执行报错：the definition of table 'a' prevents operation UPDATE on table 'radcheck'
修改语句：
UPDATE radcheck set linkphone='3333' where id =(select b.id from (select id from vw_radcheck where (1=1 and UserName = 'DHASDFJSADF')) b)
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