Examine the contents of SQL loader control file: Which three statements are true regarding the SQL* Loader operation performed using the control file?（）A、An EMP table is created if a table does not exist. Otherwise, if the EMP table is appended with the loaded data.B、The SQL* Loader data file myfile1.dat has the column names for the EMP table.C、The SQL* Loader operation fails because no record terminators are specified.D、Field names should be the first line in the both the SQL* Loader data files.E、The SQL* Loader operation assumes that the file must be a stream record format file with the normal carriage return string as the record terminator.
Examine the contents of SQL loader control file: Which three statements are true regarding the SQL* Loader operation performed using the control file?（）
- A、An EMP table is created if a table does not exist. Otherwise, if the EMP table is appended with the loaded data.
- B、The SQL* Loader data file myfile1.dat has the column names for the EMP table.
- C、The SQL* Loader operation fails because no record terminators are specified.
- D、Field names should be the first line in the both the SQL* Loader data files.
- E、The SQL* Loader operation assumes that the file must be a stream record format file with the normal carriage return string as the record terminator.
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这个sql语句怎么写? 有三个表如下users(id,name);type(id,name);note(id,title,contents,user_id,author_id,type_id);其中，user_id是作者、author_id是原创作者都是与users中的id进行关联的，type_id是分类编号，与type的id关联。现在需要创建一个视图显示note中的id、title、contents、user_id、author_id、type_id、以及user_id、author_id、type_id对应的name。怎样写sql语句呢？
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