A describe result set does not contain fetchable data; instead, it indicates the existence of descriptive information returned as the result of a dynamic SQL describe input or describe output command.
An application retrieves this descriptive information with any of the methods below:
Call ct_res_info to get the number of items and ct_describe to get a description of each item.
Call ct_dyndesc several times to get the number of items and a description of each.
Call ct_res_info to get the number of items, and call ct_dynsqlda once to get item descriptions.
For more information about dynamic SQL, see Chapter 8, “Using Dynamic SQL Commands,” in the Open Client Client-Library/C Programmer’s Guide.
