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FALSE is returned if an error occurs.
Notes
Portability Considerations | An error will occur if you attempt to use a generic key which is numeric if you are using a Windows, Linux or other non-IBM i host system. |
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Instead of calling these three functions, all the records are returned after the one LceSelect call.
In some circumstances the use of LceSelect may not be the best option. If the Host is slow or there are many records to return, then it may be better to use the LceRequestSelect, LceReceiveSelect and LceGetRecordCount functions, as LceRequestSelect returns control to the caller while the host prepares the data. While this is happening, your application can perform other tasks locally.
Key and Generic search considerations:
- You must know the specific key fields to the file. The key fields listed can be a subset of the actual keys to the file, but the sequence in which the keys are listed must match the sequence of the keys in the file. This is very important. The sequence of the keys must match the file. If you need the keys in a different sequence you must use a logical file.
- The fGeneric flag determines whether the keys must match exactly or whether a generic key search should apply. If a generic search is used on a file with more than one key field, then the search will apply only to the last non-blank key field specified. Any blank key field will be considered generic.
- You do not have to use the complete key list. You could use the first two fields in a file with three key fields. If you use a subset of the key fields, you are implicitly using a generic search on the unspecified keys, i.e. match key1 and key2 while key3 can have any value. In this case, you do not use the fGeneric search. If you did use the generic search in this situation, you will get a generic search based on key2 and key3.
- This function can only be executed once a session has been opened.