T-SQL之查询和管理表数据

1、标准查询
  select  [all | distinct ] select_list  对结果集相同行的处理
  from table_name
  [ where <search_condition> ]  
  [ group by <group_by_condition> ]
  [ having <search_condition> ]
  [order by <order_expression> [ ASC | DESC ] ]
2、

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