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1 \u8868\u793a\u8fd9\u662f\u8be5 XID \u7684\u7b2c\u4e00\u4e2a\u6d41\u5f0f\u4f20\u8f93\u5206\u6bb5\uff1b\u5176\u4ed6\u5206\u6bb5\u4e3a 0\u3002

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", "manual_path": "/docs/18/protocol-logicalrep-message-formats.html", "localization": {"status": "complete", "sources": [{"url": "/docs/18/protocol-logicalrep-message-formats.html", "method": "same-major semantic node", "sha256": "61e6f991cfe7587d83d1c5e849d29aaaa85476953480ace0ec4dd00cbb25556b", "language": "zh", "matched_nodes": ["#PROTOCOL-LOGICALREP-MESSAGE-FORMATS/div[2]/dl[0]/dd[1]/div[0]/dl[0]/dd[7]", "#PROTOCOL-LOGICALREP-MESSAGE-FORMATS/div[4]/dl[0]/dd[1]/div[0]/dl[0]/dd[1]"]}], "language": "zh", "original_text": {"/versions/18/description/0": "Logical replication Stream Start format. Identifies the message as a stream start message.", "/versions/18/facts/0/label": "Layer", "/versions/18/facts/0/value": "Logical replication payload; distinct from the frontend/backend message envelope", "/versions/18/facts/1/label": "First field", "/versions/18/tables/0/title": "Fields in documented order", "/versions/18/related/0/label": "Streaming replication protocol", "/versions/18/related/1/label": "Logical Decoding Plugins", "/versions/18/sections/0/title": "Protocol context", "/versions/18/tables/0/rows/0/c2": "Identifies the message as a stream start message.", "/versions/18/tables/0/rows/1/c2": "Xid of the transaction.", "/versions/18/tables/0/rows/2/c2": "A value of 1 indicates this is the first stream segment for this XID, 0 for any other stream segment.", "/versions/18/sections/0/paragraphs/0": "This section describes the detailed format of each logical replication message. These messages are either returned by the replication slot SQL interface or are sent by a walsender. In the case of a walsender, they are encapsulated inside replication protocol WAL messages as described in Section 54.4 , and generally obey the same message flow as physical replication. The following messages (Stream Start, Stream Stop, Stream Commit, and Stream Abort) are available since protocol version 2. The following messages (Begin Prepare, Prepare, Commit Prepared, Rollback Prepared, Stream Prepare) are available since protocol version 3. The following message parts are shared by the above messages.", "/versions/18/tables/0/columns/0/label": "Position", "/versions/18/tables/0/columns/1/label": "Format", "/versions/18/tables/0/columns/2/label": "Meaning"}, "fallback_fields": [], "source_language": "en", "original_snapshot_sha256": "646a69fef6163608e9d9444881bebe3f3ed5cc8de40d19149d46df2dcf1741ba"}, "comparison_data": {"layer": "logical replication", "fields": [{"format": "Byte1('S')", "description": "Identifies the message as a stream start message."}, {"format": "Int32 (TransactionId)", "description": "Xid of the transaction."}, {"format": "Int8", "description": "A value of 1 indicates this is the first stream segment for this XID, 0 for any other stream segment."}]}, "comparison_hash": "b086ffebabd950269a39e94ef7759a671a40f03c7268616e458437d9a2416ddb", "manual_language": "zh"}, "comparison": {"left": "14", "right": "15", "status": "changed", "diff": "--- PostgreSQL 14\n+++ PostgreSQL 15\n@@ -6,7 +6,7 @@\n },\n {\n \"description\": \"Xid of the transaction.\",\n- \"format\": \"Int32\"\n+ \"format\": \"Int32 (TransactionId)\"\n },\n {\n \"description\": \"A value of 1 indicates this is the first stream segment for this XID, 0 for any other stream segment.\","}}