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1a20b32bb5
By default, records with an empty-string value in a join field are paired just like any other value, so two records both missing an ID get matched with each other -- rarely the intended behavior. --ignore-empty treats an empty-string join-field value as if the field were absent, on both the left and right files, so such records fall through to unpaired handling (--np/--ul/--ur) instead of cross-joining on the empty string. Wires the check through both the default half-streaming join and the -s/--sorted-input doubly-streaming join, which track left-file buckets independently and needed the same empty-aware key-presence check in JoinBucketKeeper. Co-authored-by: Claude Sonnet 5 <noreply@anthropic.com>
51 B
51 B
| 1 | id | code |
|---|---|---|
| 2 | ffffff | |
| 3 | 000000 | |
| 4 | 2 | 00ff00 |
| 5 | 3 | 0000ff |
| 6 | 4 | ff0000 |