更新表（选择）sql server

Question

我在sql中遇到问题我要更新表 这是我的查询

update TICKET set voz_sub_som = (select foiz_sub * tarif_som / 100 AS "Total Cost" FROM  TICKET) from ticket

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Answer 1

检查

 update TICKET set voz_sub_som = (select foiz_sub * tarif_som / 100 AS "Total Cost" FROM  TICKET)