Querying Db with huge data

[FONT=Century Gothic]Hi Friends,
I need your help regarding data input to a query.
For example, I have 1000 records (student_name) in an excel file, I have to query the "students" table for getting the details of these 1000 student records.
how will I pass these 1000 records in the query as input :confused: /FONT]

[I]select * from students
where student_id in (' ', ' ',..... ' '_;[/I]

If I understand your requirement correctly...
1- you have a large "students" table
2- you have to retrieve data related to 1,000 of them
Is that correct?

Either you...
1- list the 1,000 student_id's on your predicate, or
2- you find a different column that brings all of those students like the status of the student being active or something like that, or
3- you join students table with other tables that allow to filter the 1,000 desired students

Hard to tell 'cause we have no visibility of your environment.

It looks to me like he has a table in an Oracle database and he wants to take an external file and query on the database table based on the external file. It seems to me that you want to create an external table in the database to point to your spreadsheet. Then when you query from the students table you can do this:

Code:

---

SELECT *
  FROM students
 WHERE student_id IN
    ( SELECT student_id
        FROM student_spreadsheet )
 ORDER BY 1;

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Quote:

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Originally Posted by gandolf989

It looks to me like he has a table in an Oracle database and he wants to take an external file and query on the database table based on the external file. It seems to me that you want to create an external table in the database to point to your spreadsheet. Then when you query from the students table you can do this:

Code:

---

SELECT *
  FROM students
 WHERE student_id IN
    ( SELECT student_id
        FROM student_spreadsheet )
 ORDER BY 1;

---

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This is a very smart solution indeed.

Quote:

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Originally Posted by PAVB

This is a very smart solution indeed.

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Thanks Yoda! :D

Quote:

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Originally Posted by PAVB

This is a very smart solution indeed.

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Indeed it is, I use it all the time...;)