ASA Programming Guide
  Using SQL in Applications
    Working with cursors

Fetching rows through a cursor

The simplest way of processing the result set of a query using a cursor is to loop through all the rows of the result set until there are no more rows.

To loop through the rows of a result set

1. Declare and open the cursor (embedded SQL), or execute a statement that returns a result set (ODBC, JDBC, Open Client) or AsaDataReader object (ADO.NET).

2. Continue to fetch the next row until you get a Row Not Found error.

3. Close the cursor.

How step 2 of this operation is carried out depends on the interface you use. For example,

• ODBC    SQLFetch, SQLExtendedFetch, or SQLFetchScroll advances the cursor to the next row and returns the data.

  For more information on using cursors in ODBC, see Working with result sets.

• ADO.NET    Use the AsaDataReader.NextResult method. See NextResult method.

• Embedded SQL    The FETCH statement carries out the same operation.

  For more information on using cursors in embedded SQL, see Using cursors in embedded SQL.

• JDBC    The next method of the ResultSet object advances the cursor and returns the data.

  For more information on using the ResultSet object in JDBC, see Queries using JDBC.

• Open Client    The ct_fetch function advances the cursor to the next row and returns the data.

  For more information on using cursors in Open Client applications, see Using cursors.