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\u4e8b\u52a1\u7684 XID\uff0c\u4ec5\u5728\u6d41\u5f0f\u4f20\u8f93\u4e8b\u52a1\u4e2d\u51fa\u73b0\u3002\u6b64\u5b57\u6bb5\u4ece\u534f\u8bae\u7248\u672c 2 \u8d77\u53ef\u7528\u3002

\n
\n
Int8
\n
\n

\n

\u6807\u5fd7\uff1a0 \u8868\u793a\u6ca1\u6709\u6807\u5fd7\uff1b1 \u8868\u793a\u8be5\u903b\u8f91\u89e3\u7801\u6d88\u606f\u662f\u4e8b\u52a1\u6027\u7684\u3002

\n

\n
\n
Int64 (XLogRecPtr)
\n
\n

\n

\u903b\u8f91\u89e3\u7801\u6d88\u606f\u7684LSN\u3002

\n

\n
\n
\u5b57\u7b26\u4e32
\n
\n

\n

\u903b\u8f91\u89e3\u7801\u6d88\u606f\u7684\u524d\u7f00\u3002

\n

\n
\n
Int32
\n
\n

\n

\u5185\u5bb9\u7684\u957f\u5ea6\u3002

\n

\n
\n
Byte n
\n
\n

\n

\u903b\u8f91\u89e3\u7801\u6d88\u606f\u7684\u5185\u5bb9\u3002

\n

\n
\n
\n
\n
", "manual_path": "/docs/18/protocol-logicalrep-message-formats.html", "localization": {"status": "complete", "sources": [{"url": "/docs/18/datatype-json.html", "method": "same-major semantic node", "sha256": "b9e8f98a0b5f2a4ec7b5197d02ab40c0ac0635a678c32728aaadd43cb4cd3766", "language": "zh", "matched_nodes": ["#DATATYPE-JSON/div[19]/pre[27]/em[4]/code[0]"]}, {"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[3]/div[0]/dl[0]/dd[11]", "#PROTOCOL-LOGICALREP-MESSAGE-FORMATS/div[2]/dl[0]/dd[3]/div[0]/dl[0]/dd[13]", "#PROTOCOL-LOGICALREP-MESSAGE-FORMATS/div[2]/dl[0]/dd[3]/div[0]/dl[0]/dd[1]", "#PROTOCOL-LOGICALREP-MESSAGE-FORMATS/div[2]/dl[0]/dd[3]/div[0]/dl[0]/dd[5]", "#PROTOCOL-LOGICALREP-MESSAGE-FORMATS/div[2]/dl[0]/dd[3]/div[0]/dl[0]/dd[7]", "#PROTOCOL-LOGICALREP-MESSAGE-FORMATS/div[2]/dl[0]/dd[3]/div[0]/dl[0]/dd[9]"]}], "language": "zh", "original_text": {"/versions/18/description/0": "Logical replication Message format. Identifies the message as a logical decoding 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 logical decoding message.", "/versions/18/tables/0/rows/1/c2": "Xid of the transaction (only present for streamed transactions). This field is available since protocol version 2.", "/versions/18/tables/0/rows/2/c2": "Flags; Either 0 for no flags or 1 if the logical decoding message is transactional.", "/versions/18/tables/0/rows/3/c2": "The LSN of the logical decoding message.", "/versions/18/tables/0/rows/4/c1": "String", "/versions/18/tables/0/rows/4/c2": "The prefix of the logical decoding message.", "/versions/18/tables/0/rows/5/c2": "Length of the content.", "/versions/18/tables/0/rows/6/c1": "Byte n", "/versions/18/tables/0/rows/6/c2": "The content of the logical decoding message.", "/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": "ae0b276504e3953085ffecd35698e70d8ed74f117afcd29eea802e1edd4b7d73"}, "comparison_data": {"layer": "logical replication", "fields": [{"format": "Byte1('M')", "description": "Identifies the message as a logical decoding message."}, {"format": "Int32 (TransactionId)", "description": "Xid of the transaction (only present for streamed transactions). This field is available since protocol version 2."}, {"format": "Int8", "description": "Flags; Either 0 for no flags or 1 if the logical decoding message is transactional."}, {"format": "Int64 (XLogRecPtr)", "description": "The LSN of the logical decoding message."}, {"format": "String", "description": "The prefix of the logical decoding message."}, {"format": "Int32", "description": "Length of the content."}, {"format": "Byte n", "description": "The content of the logical decoding message."}]}, "comparison_hash": "e342b37109a65064e914f18c92934727892fb2c60c929fa2221ad41dfbb7dbb8", "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 (only present for streamed transactions). This field is available since protocol version 2.\",\n- \"format\": \"Int32\"\n+ \"format\": \"Int32 (TransactionId)\"\n },\n {\n \"description\": \"Flags; Either 0 for no flags or 1 if the logical decoding message is transactional.\",\n@@ -14,7 +14,7 @@\n },\n {\n \"description\": \"The LSN of the logical decoding message.\",\n- \"format\": \"Int64\"\n+ \"format\": \"Int64 (XLogRecPtr)\"\n },\n {\n \"description\": \"The prefix of the logical decoding message.\","}}