HINT Directive
The HINT directive allows the specification of a custom hint that will be used for a specific key when working on Oracle database with Database Bridge. If specified, this hint is used instead of the hint that is automatically generated by
-oh option.
$EFD HINT idxNum:hintValue |
or
*(( EFD HINT idxNum:hintValue )) |
or
*>(( EFD HINT idxNum:hintValue )) |
idxNum is the number of the key that will be affected by the hint. This number is calculated considering the order of the keys in the File-Control, where 1 is the primary key while 2 and higher values are the alternate keys.
hintValue can be a string or a number.
• If a string is used, the string is generated as it is in the SQL hint. For example, the following directive generates the hint /*+ ordered */ for readings on the first key.
FD file1. $EFD HINT 1:"ordered" 01 file1-record. ... |
• If a number is used, the number specifies the index to be suggested for the query in the SQL hint. For example, the directive below generates a hint that makes Oracle use the first index when the COBOL program is reading the second key of the file:
FD file1. $EFD HINT 2:1 01 file1-record. ... |