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Getting Results You Expect
If, after processing a query in the Data Warehouse, you get zero rows
or do not get the results that you expect, try checking the following:
- Limits: Check that the limits are applied properly. Remember
to check that the case and formats for the field that is being limited
are chosen correctly. For example, make sure that the "P" in the Profit
Center ID number is capitalized.
- Joins: Double-check that the tables are joined properly, with
only one join between any two tables. Try deleting the join (click on
it to highlight, and press the delete key) and re-joining. Incorrect
joins can sometimes be made by joining to the field above or below your
intended field.
- Timing of Data: Are you certain that there is data in the Data
Warehouse for the time period(s) you have requested in your query? For
example, the Warehouse does not have any telephone data prior to June,
1999. Requesting a date prior to then would result in zero rows.
- Access: Confirm that you have access to the data you are trying
to retrieve. One easy way to do this is to open a new query, open the
table catalog, and see whether the tables listed in your view are also
in the query you are trying to process. Contact warehouse-admin@mit.edu
if you believe there is a problem with your access to data.
Contact warehouse-help@mit.edu
if you are still not able to get the results you anticipate. A Data Warehouse
team member will be in touch with you to assist you further. |