base.SqlHandle.fetchFirst
Fetches the first row in a scrollable SQL result set.
Syntax
fetchFirst()Usage
Call the fetchFirst() method to fetch the first row in a scrollable SQL result
set.
The SQL statement must have been opened with a openScrollCursor() call.
After performing the fetch call, you can query for column information
with the getResultCount(),
getResultName(index),
getResultType(index) and
getResultValue(index) methods.
If no row is found (end of result set), SQLCA.SQLCODE is set to 100 (NOTFOUND).
If the result set is empty, SQLCA.SQLCODE is set to 100 (NOTFOUND).
As with standard Genero SQL instructions, SQL errors can be trapped
with WHENEVER ERROR or TRY / CATCH blocks and by
testing SQLCA.SQLCODE.
Example
DEFINE sh base.SqlHandle
...
CALL sh.fetchFirst()For a complete example, see Example 4: SqlHandle with scroll cursor.