Oracle获取表字段名，字段类型，字段长度，注释

    

     

      

       

      
      

       

        SELECT b.comments as 注释,
       
      
     

      

       

      
      

       

               a.column_name as 列名,
       
      
     

      

       

      
      

       

               a.data_type || '(' || a.data_length || ')' as 数据类型,
       
      
     

      

       

      
      

       

               a.nullable as 是否为空
       
      
     

      

       

      
      

       
  FROM user_tab_columns a, user_col_comments b
       
      
     

      

       

      
      

       
 WHERE a.TABLE_NAME = '表名'
       
      
     

      

       

      
      

       
   and b.table_name = '表名'
       
      
     

      

       

      
      

       
   and a.column_name = b.column_name