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Q: What is SQLCODE and what are common values?
Answer:
SQLCODE is a return code in SQLCA indicating the result of SQL execution.
Common SQLCODE values:
| 0 | Successful execution |
| 100 | No data found / End of cursor |
| -803 | Duplicate key on insert |
| -811 | Multiple rows returned for singleton SELECT |
| -904 | Unavailable resource |
| -911 | Deadlock/timeout |
| -922 | Authorization failure |
| -927 | DB2 not available |
Negative = Error, 0 = Success, 100 = No data
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Q: How to handle -803 SQLCODE?
Answer:
-803 is duplicate key violation. Primary key or unique index constraint. Check SQLERRD(3) for index ID. Solutions: check data, use IGNORE_DUPLICATE, handle in program logic. May indicate data quality issue.