The examples use a sample river flow data set. To use your own data, replace the table and column names, and authorization object. See Variable Substitutions for Examples for the credentials and location values for the sample data set.
Before proceeding, verify with your database administrator that you have the correct privileges and an authorization object.
- To run NOS-related commands, log on to the database as a user with the required privileges.
- If it does not exist, create the foreign table or ask your database administrator to create the foreign table. See Setting Up to Run Examples.
- Run the following command to get the maximum and minimum values for a specific payload attribute, Flow in this example. It executes against the foreign table and considers all records contained within the object as specified by the LOCATION clause in the foreign table.
SELECT MAX(columnN), MIN(columnN) FROM table_name;
Example: Finding Maximum and Minimum Values
If not already done, create the foreign table. See Setting Up to Run Examples.
SELECT MAX(Flow), MIN(Flow) FROM riverflow;
Your result will be similar to the following:
Maximum(Flow) Minimum(Flow) ------------- ------------- 9.91 -9.72