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Improve documentation about binary/textual output mode for output plugins.

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Discussion: CAB7nPqQrqFzjqCjxu4GZzTrD9kpj6HMn9G5aOOMwt1WZ8NfqeA@mail.gmail.com,
    CAB7nPqQXc_+g95zWnqaa=mVQ4d3BVRs6T41frcEYi2ocUrR3+A@mail.gmail.com

Per discussion between Michael Paquier, Robert Haas and Andres Freund

Backpatch to 9.4 where logical decoding was introduced.
This commit is contained in:
Andres Freund
2014-10-01 13:13:59 +02:00
parent f78319fec8
commit ce84b0682c
3 changed files with 24 additions and 3 deletions
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2
contrib/test_decoding/expected/binary.out
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@ -14,7 +14,7 @@ SELECT data FROM pg_logical_slot_get_changes('regression_slot', NULL, NULL, 'for
-- fails, binary plugin, textual consumer
SELECT data FROM pg_logical_slot_get_changes('regression_slot', NULL, NULL, 'force-binary', '1');
ERROR: output plugin cannot produce binary output
ERROR: logical decoding output plugin "test_decoding" produces binary output, but "pg_logical_slot_get_changes(name,pg_lsn,integer,text[])" expects textual data
-- succeeds, textual plugin, binary consumer
SELECT data FROM pg_logical_slot_get_binary_changes('regression_slot', NULL, NULL, 'force-binary', '0');
data