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lang=\"zh\">\n<p>\u6807\u8bc6\u7ecf\u8fc7 TOAST \u5904\u7406\u4e14\u672a\u66f4\u6539\u7684\u503c\uff08\u4e0d\u53d1\u9001\u5b9e\u9645\u503c\uff09\u3002</p>\n</p>\n</dd>\n</dl>\n</div>\n<p lang=\"zh\">\u6216\u8005</p>\n<div class=\"variablelist\">\n<dl class=\"variablelist\">\n<dt><span class=\"term\">Byte1('t')</span></dt>\n<dd>\n<p lang=\"zh\">\n<p>\u5c06\u8be5\u6570\u636e\u6807\u8bc6\u4e3a\u6587\u672c\u683c\u5f0f\u7684\u503c\u3002</p>\n</p>\n</dd>\n</dl>\n</div>\n<p lang=\"zh\">\u6216\u8005</p>\n<div class=\"variablelist\">\n<dl class=\"variablelist\">\n<dt><span class=\"term\">Byte1('b')</span></dt>\n<dd>\n<p lang=\"zh\">\n<p>\u5c06\u8be5\u6570\u636e\u6807\u8bc6\u4e3a\u4e8c\u8fdb\u5236\u683c\u5f0f\u7684\u503c\u3002</p>\n</p>\n</dd>\n<dt><span class=\"term\">Int32</span></dt>\n<dd>\n<p lang=\"zh\">\n<p>\u5217\u503c\u7684\u957f\u5ea6\u3002</p>\n</p>\n</dd>\n<dt lang=\"zh\">Byte n</dt>\n<dd>\n<p lang=\"zh\">\n<p>\u5217\u503c\uff0c\u91c7\u7528\u4e8c\u8fdb\u5236\u6216\u6587\u672c\u683c\u5f0f\uff08\u7531\u524d\u9762\u7684\u683c\u5f0f\u5b57\u8282\u6307\u5b9a\uff09\u3002<em class=\"replaceable\"><code>n</code></em> \u4e3a\u4e0a\u8ff0\u957f\u5ea6\u3002</p>\n</p>\n</dd>\n</dl>\n</div>\n</dd></dl>", "manual_path": "/docs/15/protocol-logicalrep-message-formats.html", "localization": {"status": "complete", "sources": [{"url": "/docs/15/protocol-logicalrep-message-formats.html", "method": "same-major semantic node", "sha256": "55b157cac874170762ba43193ac136e49b632d59d2a691073af2f408a7e2b51c", "language": "zh", "matched_nodes": ["#PROTOCOL-LOGICALREP-MESSAGE-FORMATS/div[2]/dl[0]/dd[9]/div[0]/dl[0]/dd[13]", "#PROTOCOL-LOGICALREP-MESSAGE-FORMATS/div[8]/dl[0]/dd[1]/div[2]/dl[0]/dd[1]", "#PROTOCOL-LOGICALREP-MESSAGE-FORMATS/div[8]/dl[0]/dd[1]/div[4]/dl[0]/dd[1]", "#PROTOCOL-LOGICALREP-MESSAGE-FORMATS/div[8]/dl[0]/dd[1]/div[6]/dl[0]/dd[1]", 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\u8d77\u53ef\u7528\u3002\u4ee5\u4e0b\u6d88\u606f\u90e8\u5206\u4e3a\u4e0a\u8ff0\u6d88\u606f\u6240\u5171\u7528\u3002"]}], "signature": "TupleData", "description": ["\u903b\u8f91\u590d\u5236 TupleData \u683c\u5f0f\uff1a\u5217\u6570\u3002"], "manual_html": "<dl><dd>\n<div class=\"variablelist\">\n<dl class=\"variablelist\">\n<dt><span class=\"term\">Int16</span></dt>\n<dd>\n<p lang=\"zh\">\n<p>\u5217\u6570\u3002</p>\n</p>\n</dd>\n</dl>\n</div>\n<p lang=\"zh\">\u63a5\u4e0b\u6765\uff0c\u6bcf\u4e00\u5217\uff08\u751f\u6210\u5217\u9664\u5916\uff09\u90fd\u4f1a\u51fa\u73b0\u4ee5\u4e0b\u5b50\u6d88\u606f\u4e4b\u4e00\uff1a</p>\n<div class=\"variablelist\">\n<dl class=\"variablelist\">\n<dt><span class=\"term\">Byte1('n')</span></dt>\n<dd>\n<p lang=\"zh\">\n<p>\u5c06\u8be5\u6570\u636e\u6807\u8bc6\u4e3a NULL \u503c\u3002</p>\n</p>\n</dd>\n</dl>\n</div>\n<p lang=\"zh\">\u6216\u8005</p>\n<div class=\"variablelist\">\n<dl class=\"variablelist\">\n<dt><span class=\"term\">Byte1('u')</span></dt>\n<dd>\n<p lang=\"zh\">\n<p>\u6807\u8bc6\u7ecf\u8fc7 TOAST \u5904\u7406\u4e14\u672a\u66f4\u6539\u7684\u503c\uff08\u4e0d\u53d1\u9001\u5b9e\u9645\u503c\uff09\u3002</p>\n</p>\n</dd>\n</dl>\n</div>\n<p lang=\"zh\">\u6216\u8005</p>\n<div class=\"variablelist\">\n<dl class=\"variablelist\">\n<dt><span class=\"term\">Byte1('t')</span></dt>\n<dd>\n<p lang=\"zh\">\n<p>\u5c06\u8be5\u6570\u636e\u6807\u8bc6\u4e3a\u6587\u672c\u683c\u5f0f\u7684\u503c\u3002</p>\n</p>\n</dd>\n</dl>\n</div>\n<p lang=\"zh\">\u6216\u8005</p>\n<div class=\"variablelist\">\n<dl class=\"variablelist\">\n<dt><span class=\"term\">Byte1('b')</span></dt>\n<dd>\n<p lang=\"zh\">\n<p>\u5c06\u8be5\u6570\u636e\u6807\u8bc6\u4e3a\u4e8c\u8fdb\u5236\u683c\u5f0f\u7684\u503c\u3002</p>\n</p>\n</dd>\n<dt><span class=\"term\">Int32</span></dt>\n<dd>\n<p lang=\"zh\">\n<p>\u5217\u503c\u7684\u957f\u5ea6\u3002</p>\n</p>\n</dd>\n<dt lang=\"zh\">Byte n</dt>\n<dd>\n<p 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The following message parts are shared by the above messages.", "/versions/16/tables/0/columns/0/label": "Position", "/versions/16/tables/0/columns/1/label": "Format", "/versions/16/tables/0/columns/2/label": "Meaning"}, "fallback_fields": [], "source_language": "en", "original_snapshot_sha256": "22ef2b555ff3220ac42d4bfaa07f30eb64d57734950de38744e64d53036e3566"}, "comparison_data": {"layer": "logical replication", "fields": [{"format": "Int16", "description": "Number of columns."}, {"format": "Byte1('n')", "description": "Identifies the data as NULL value."}, {"format": "Byte1('u')", "description": "Identifies unchanged TOASTed value (the actual value is not sent)."}, {"format": "Byte1('t')", "description": "Identifies the data as text formatted value."}, {"format": "Byte1('b')", "description": "Identifies the data as binary formatted value."}, {"format": "Int32", "description": "Length of the column value."}, {"format": "Byte n", "description": "The value of the column, either in binary or in text format. 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\u4e3a\u4e0a\u8ff0\u957f\u5ea6\u3002"}], "title": "\u6309\u624b\u518c\u987a\u5e8f\u6392\u5217\u7684\u5b57\u6bb5", "columns": [{"key": "c0", "label": "\u4f4d\u7f6e"}, {"key": "c1", "label": "\u683c\u5f0f"}, {"key": "c2", "label": "\u542b\u4e49"}]}], "related": [{"url": "/docs/17/protocol-replication.html", "label": "\u6d41\u590d\u5236\u534f\u8bae"}, {"url": "/wiki/decode/?v=17", "label": "\u903b\u8f91\u89e3\u7801\u63d2\u4ef6"}], "release": {"ref": "https://ftp.postgresql.org/pub/source/v17.11/postgresql-17.11.tar.bz2", "label": "17.11", "major": "17", "channel": "stable", "revision": "dd27f2b3c59e73ed14aa3324901242bf69a032a6347805f274e6260322d42979"}, "sources": [{"url": "https://pg.center/docs/17/protocol-logicalrep-message-formats.html#PROTOCOL-LOGICALREP-MESSAGE-FORMATS-TUPLEDATA", "path": "protocol-logicalrep-message-formats.html", "label": "PostgreSQL 17 English manual", "sha256": "438b6a09f48bd0e9d2424559a0ab950dce44a9ab6573d362362c1c8d0b375fe3", "language": "en", "original_url": "/docs/17/protocol-logicalrep-message-formats.html#PROTOCOL-LOGICALREP-MESSAGE-FORMATS-TUPLEDATA"}], "sections": [{"title": "\u534f\u8bae\u4e0a\u4e0b\u6587", "paragraphs": ["\u672c\u8282\u8bf4\u660e\u5404\u903b\u8f91\u590d\u5236\u6d88\u606f\u7684\u8be6\u7ec6\u683c\u5f0f\u3002\u8fd9\u4e9b\u6d88\u606f\u7531\u590d\u5236\u69fd SQL \u63a5\u53e3\u8fd4\u56de\uff0c\u6216\u7531 walsender \u53d1\u9001\u3002\u7531 walsender \u53d1\u9001\u65f6\uff0c\u5b83\u4eec\u88ab\u5c01\u88c5\u5728\u590d\u5236\u534f\u8bae\u7684 WAL \u6d88\u606f\u4e2d\uff08\u53c2\u89c1\u7b2c 53.4 \u8282\uff09\uff0c\u6d88\u606f\u6d41\u7a0b\u901a\u5e38\u4e0e\u7269\u7406\u590d\u5236\u76f8\u540c\u3002Stream Start\u3001Stream Stop\u3001Stream Commit \u548c Stream Abort \u4ece\u534f\u8bae\u7248\u672c 2 \u8d77\u53ef\u7528\u3002Begin Prepare\u3001Prepare\u3001Commit Prepared\u3001Rollback Prepared \u548c Stream Prepare \u4ece\u534f\u8bae\u7248\u672c 3 \u8d77\u53ef\u7528\u3002\u4ee5\u4e0b\u6d88\u606f\u90e8\u5206\u4e3a\u4e0a\u8ff0\u6d88\u606f\u6240\u5171\u7528\u3002"]}], "signature": "TupleData", "description": ["\u903b\u8f91\u590d\u5236 TupleData \u683c\u5f0f\uff1a\u5217\u6570\u3002"], "manual_html": "<dl><dd>\n<div class=\"variablelist\">\n<dl class=\"variablelist\">\n<dt><span class=\"term\">Int16</span></dt>\n<dd>\n<p lang=\"zh\">\n<p>\u5217\u6570\u3002</p>\n</p>\n</dd>\n</dl>\n</div>\n<p lang=\"zh\">\u63a5\u4e0b\u6765\uff0c\u6bcf\u4e00\u5217\uff08\u751f\u6210\u5217\u9664\u5916\uff09\u90fd\u4f1a\u51fa\u73b0\u4ee5\u4e0b\u5b50\u6d88\u606f\u4e4b\u4e00\uff1a</p>\n<div class=\"variablelist\">\n<dl class=\"variablelist\">\n<dt><span class=\"term\">Byte1('n')</span></dt>\n<dd>\n<p lang=\"zh\">\n<p>\u5c06\u8be5\u6570\u636e\u6807\u8bc6\u4e3a NULL \u503c\u3002</p>\n</p>\n</dd>\n</dl>\n</div>\n<p lang=\"zh\">\u6216\u8005</p>\n<div class=\"variablelist\">\n<dl class=\"variablelist\">\n<dt><span class=\"term\">Byte1('u')</span></dt>\n<dd>\n<p lang=\"zh\">\n<p>\u6807\u8bc6\u7ecf\u8fc7 TOAST \u5904\u7406\u4e14\u672a\u66f4\u6539\u7684\u503c\uff08\u4e0d\u53d1\u9001\u5b9e\u9645\u503c\uff09\u3002</p>\n</p>\n</dd>\n</dl>\n</div>\n<p lang=\"zh\">\u6216\u8005</p>\n<div class=\"variablelist\">\n<dl class=\"variablelist\">\n<dt><span class=\"term\">Byte1('t')</span></dt>\n<dd>\n<p lang=\"zh\">\n<p>\u5c06\u8be5\u6570\u636e\u6807\u8bc6\u4e3a\u6587\u672c\u683c\u5f0f\u7684\u503c\u3002</p>\n</p>\n</dd>\n</dl>\n</div>\n<p lang=\"zh\">\u6216\u8005</p>\n<div class=\"variablelist\">\n<dl class=\"variablelist\">\n<dt><span class=\"term\">Byte1('b')</span></dt>\n<dd>\n<p lang=\"zh\">\n<p>\u5c06\u8be5\u6570\u636e\u6807\u8bc6\u4e3a\u4e8c\u8fdb\u5236\u683c\u5f0f\u7684\u503c\u3002</p>\n</p>\n</dd>\n<dt><span class=\"term\">Int32</span></dt>\n<dd>\n<p lang=\"zh\">\n<p>\u5217\u503c\u7684\u957f\u5ea6\u3002</p>\n</p>\n</dd>\n<dt lang=\"zh\">Byte n</dt>\n<dd>\n<p lang=\"zh\">\n<p>\u5217\u503c\uff0c\u91c7\u7528\u4e8c\u8fdb\u5236\u6216\u6587\u672c\u683c\u5f0f\uff08\u7531\u524d\u9762\u7684\u683c\u5f0f\u5b57\u8282\u6307\u5b9a\uff09\u3002<em class=\"replaceable\"><code>n</code></em> \u4e3a\u4e0a\u8ff0\u957f\u5ea6\u3002</p>\n</p>\n</dd>\n</dl>\n</div>\n</dd></dl>", "manual_path": "/docs/17/protocol-logicalrep-message-formats.html", "localization": {"status": "complete", "sources": [{"url": "/docs/17/protocol-logicalrep-message-formats.html", "method": "same-major semantic node", "sha256": "79ce4e8bc85b402bb07edbfbe82b47cfd1d5e41a301bfbd1da8bac9c8526036c", "language": "zh", "matched_nodes": ["#PROTOCOL-LOGICALREP-MESSAGE-FORMATS/div[2]/dl[0]/dd[9]/div[0]/dl[0]/dd[13]", "#PROTOCOL-LOGICALREP-MESSAGE-FORMATS/div[8]/dl[0]/dd[1]/div[2]/dl[0]/dd[1]", "#PROTOCOL-LOGICALREP-MESSAGE-FORMATS/div[8]/dl[0]/dd[1]/div[4]/dl[0]/dd[1]", "#PROTOCOL-LOGICALREP-MESSAGE-FORMATS/div[8]/dl[0]/dd[1]/div[6]/dl[0]/dd[1]", "#PROTOCOL-LOGICALREP-MESSAGE-FORMATS/div[8]/dl[0]/dd[1]/div[8]/dl[0]/dd[1]", "#PROTOCOL-LOGICALREP-MESSAGE-FORMATS/div[8]/dl[0]/dd[1]/div[8]/dl[0]/dd[3]", "#PROTOCOL-LOGICALREP-MESSAGE-FORMATS/div[8]/dl[0]/dd[1]/div[8]/dl[0]/dd[5]", "#PROTOCOL-LOGICALREP-MESSAGE-FORMATS/div[8]/dl[0]/dd[1]/p[1]", "#PROTOCOL-LOGICALREP-MESSAGE-FORMATS/div[8]/dl[0]/dd[1]/p[3]"]}], "language": "zh", "original_text": {"/versions/17/description/0": "Logical replication TupleData format. Number of columns.", "/versions/17/facts/0/label": "Layer", "/versions/17/facts/0/value": "Logical replication payload; distinct from the frontend/backend message envelope", "/versions/17/facts/1/label": "First field", "/versions/17/tables/0/title": "Fields in documented order", "/versions/17/related/0/label": "Streaming replication protocol", "/versions/17/related/1/label": "Logical Decoding Plugins", "/versions/17/sections/0/title": "Protocol context", "/versions/17/tables/0/rows/0/c2": "Number of columns.", "/versions/17/tables/0/rows/1/c2": "Identifies the data as NULL value.", "/versions/17/tables/0/rows/2/c2": "Identifies unchanged TOASTed value (the actual value is not sent).", "/versions/17/tables/0/rows/3/c2": "Identifies the data as text formatted value.", "/versions/17/tables/0/rows/4/c2": "Identifies the data as binary formatted value.", "/versions/17/tables/0/rows/5/c2": "Length of the column value.", "/versions/17/tables/0/rows/6/c1": "Byte n", "/versions/17/tables/0/rows/6/c2": "The value of the column, either in binary or in text format. (As specified in the preceding format byte). n is the above length.", "/versions/17/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 53.4 , 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/17/tables/0/columns/0/label": "Position", "/versions/17/tables/0/columns/1/label": "Format", "/versions/17/tables/0/columns/2/label": "Meaning"}, "fallback_fields": [], "source_language": "en", "original_snapshot_sha256": "b5ba628ca19158d0fc247b15d5aab70ef5a377df22fbb5f894d1afec0206a2d5"}, "comparison_data": {"layer": "logical replication", "fields": [{"format": "Int16", "description": "Number of columns."}, {"format": "Byte1('n')", "description": "Identifies the data as NULL value."}, {"format": "Byte1('u')", "description": "Identifies unchanged TOASTed value (the actual value is not sent)."}, {"format": "Byte1('t')", "description": "Identifies the data as text formatted value."}, {"format": "Byte1('b')", "description": "Identifies the data as binary formatted value."}, {"format": "Int32", "description": "Length of the column value."}, {"format": "Byte n", "description": "The value of the column, either in binary or in text format. 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(As specified in the preceding format byte). n is the above length."}], "tables": [{"key": "fields", "rows": [{"c0": "1", "c1": "Int16", "c2": "\u5217\u6570\u3002"}, {"c0": "2", "c1": "Byte1('n')", "c2": "\u5c06\u8be5\u6570\u636e\u6807\u8bc6\u4e3a NULL \u503c\u3002"}, {"c0": "3", "c1": "Byte1('u')", "c2": "\u6807\u8bc6\u7ecf\u8fc7 TOAST \u5904\u7406\u4e14\u672a\u66f4\u6539\u7684\u503c\uff08\u4e0d\u53d1\u9001\u5b9e\u9645\u503c\uff09\u3002"}, {"c0": "4", "c1": "Byte1('t')", "c2": "\u5c06\u8be5\u6570\u636e\u6807\u8bc6\u4e3a\u6587\u672c\u683c\u5f0f\u7684\u503c\u3002"}, {"c0": "5", "c1": "Byte1('b')", "c2": "\u5c06\u8be5\u6570\u636e\u6807\u8bc6\u4e3a\u4e8c\u8fdb\u5236\u683c\u5f0f\u7684\u503c\u3002"}, {"c0": "6", "c1": "Int32", "c2": "\u5217\u503c\u7684\u957f\u5ea6\u3002"}, {"c0": "7", "c1": "Byte n", "c2": "\u5217\u503c\uff0c\u91c7\u7528\u4e8c\u8fdb\u5236\u6216\u6587\u672c\u683c\u5f0f\uff08\u7531\u524d\u9762\u7684\u683c\u5f0f\u5b57\u8282\u6307\u5b9a\uff09\u3002 n \u4e3a\u4e0a\u8ff0\u957f\u5ea6\u3002"}], "title": "\u6309\u624b\u518c\u987a\u5e8f\u6392\u5217\u7684\u5b57\u6bb5", "columns": [{"key": "c0", "label": "\u4f4d\u7f6e"}, {"key": "c1", "label": "\u683c\u5f0f"}, {"key": "c2", "label": "\u542b\u4e49"}]}], "related": [{"url": "/docs/18/protocol-replication.html", "label": "\u6d41\u590d\u5236\u534f\u8bae"}, {"url": "/wiki/decode/?v=18", "label": "\u903b\u8f91\u89e3\u7801\u63d2\u4ef6"}], "release": {"ref": "https://ftp.postgresql.org/pub/source/v18.6/postgresql-18.6.tar.bz2", "label": "18.6", "major": "18", "channel": "stable", "revision": "555610c24d53e4316da5b7d3fc25c279d96856d5e0e23ee308c328c5fa881d9f"}, "sources": [{"url": "https://pg.center/docs/18/protocol-logicalrep-message-formats.html#PROTOCOL-LOGICALREP-MESSAGE-FORMATS-TUPLEDATA", "path": "protocol-logicalrep-message-formats.html", "label": "PostgreSQL 18 English manual", "sha256": "e976b008206820fbeb1eba226e69bb7c00af157372c3545375d1b5053c76d0ad", "language": "en", "original_url": "/docs/18/protocol-logicalrep-message-formats.html#PROTOCOL-LOGICALREP-MESSAGE-FORMATS-TUPLEDATA"}], "sections": [{"title": "\u534f\u8bae\u4e0a\u4e0b\u6587", "paragraphs": ["\u672c\u8282\u8bf4\u660e\u5404\u903b\u8f91\u590d\u5236\u6d88\u606f\u7684\u8be6\u7ec6\u683c\u5f0f\u3002\u8fd9\u4e9b\u6d88\u606f\u7531\u590d\u5236\u69fd SQL \u63a5\u53e3\u8fd4\u56de\uff0c\u6216\u7531 walsender \u53d1\u9001\u3002\u7531 walsender \u53d1\u9001\u65f6\uff0c\u5b83\u4eec\u88ab\u5c01\u88c5\u5728\u590d\u5236\u534f\u8bae\u7684 WAL \u6d88\u606f\u4e2d\uff08\u53c2\u89c1\u7b2c 54.4 \u8282\uff09\uff0c\u6d88\u606f\u6d41\u7a0b\u901a\u5e38\u4e0e\u7269\u7406\u590d\u5236\u76f8\u540c\u3002Stream Start\u3001Stream Stop\u3001Stream Commit \u548c Stream Abort \u4ece\u534f\u8bae\u7248\u672c 2 \u8d77\u53ef\u7528\u3002Begin Prepare\u3001Prepare\u3001Commit Prepared\u3001Rollback Prepared \u548c Stream Prepare \u4ece\u534f\u8bae\u7248\u672c 3 \u8d77\u53ef\u7528\u3002\u4ee5\u4e0b\u6d88\u606f\u90e8\u5206\u4e3a\u4e0a\u8ff0\u6d88\u606f\u6240\u5171\u7528\u3002"]}], "signature": "TupleData", "description": ["\u903b\u8f91\u590d\u5236 TupleData \u683c\u5f0f\uff1a\u5217\u6570\u3002"], "manual_html": "<dl><dd>\n<div class=\"variablelist\">\n<dl class=\"variablelist\">\n<dt><span class=\"term\">Int16</span></dt>\n<dd>\n<p lang=\"zh\">\n<p>\u5217\u6570\u3002</p>\n</p>\n</dd>\n</dl>\n</div>\n<p lang=\"zh\">\u63a5\u4e0b\u6765\uff0c\u6bcf\u4e2a\u5df2\u53d1\u5e03\u7684\u5217\u90fd\u4f1a\u51fa\u73b0\u4ee5\u4e0b\u5b50\u6d88\u606f\u4e4b\u4e00\uff1a</p>\n<div class=\"variablelist\">\n<dl class=\"variablelist\">\n<dt><span class=\"term\">Byte1('n')</span></dt>\n<dd>\n<p lang=\"zh\">\n<p>\u5c06\u8be5\u6570\u636e\u6807\u8bc6\u4e3a NULL \u503c\u3002</p>\n</p>\n</dd>\n</dl>\n</div>\n<p lang=\"zh\">\u6216\u8005</p>\n<div class=\"variablelist\">\n<dl class=\"variablelist\">\n<dt><span class=\"term\">Byte1('u')</span></dt>\n<dd>\n<p lang=\"zh\">\n<p>\u6807\u8bc6\u7ecf\u8fc7 TOAST \u5904\u7406\u4e14\u672a\u66f4\u6539\u7684\u503c\uff08\u4e0d\u53d1\u9001\u5b9e\u9645\u503c\uff09\u3002</p>\n</p>\n</dd>\n</dl>\n</div>\n<p lang=\"zh\">\u6216\u8005</p>\n<div class=\"variablelist\">\n<dl class=\"variablelist\">\n<dt><span class=\"term\">Byte1('t')</span></dt>\n<dd>\n<p lang=\"zh\">\n<p>\u5c06\u8be5\u6570\u636e\u6807\u8bc6\u4e3a\u6587\u672c\u683c\u5f0f\u7684\u503c\u3002</p>\n</p>\n</dd>\n</dl>\n</div>\n<p lang=\"zh\">\u6216\u8005</p>\n<div class=\"variablelist\">\n<dl class=\"variablelist\">\n<dt><span class=\"term\">Byte1('b')</span></dt>\n<dd>\n<p lang=\"zh\">\n<p>\u5c06\u8be5\u6570\u636e\u6807\u8bc6\u4e3a\u4e8c\u8fdb\u5236\u683c\u5f0f\u7684\u503c\u3002</p>\n</p>\n</dd>\n<dt><span class=\"term\">Int32</span></dt>\n<dd>\n<p lang=\"zh\">\n<p>\u5217\u503c\u7684\u957f\u5ea6\u3002</p>\n</p>\n</dd>\n<dt lang=\"zh\">Byte n</dt>\n<dd>\n<p lang=\"zh\">\n<p>\u5217\u503c\uff0c\u91c7\u7528\u4e8c\u8fdb\u5236\u6216\u6587\u672c\u683c\u5f0f\uff08\u7531\u524d\u9762\u7684\u683c\u5f0f\u5b57\u8282\u6307\u5b9a\uff09\u3002<em class=\"replaceable\"><code>n</code></em> \u4e3a\u4e0a\u8ff0\u957f\u5ea6\u3002</p>\n</p>\n</dd>\n</dl>\n</div>\n</dd></dl>", "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[9]/div[0]/dl[0]/dd[13]", "#PROTOCOL-LOGICALREP-MESSAGE-FORMATS/div[8]/dl[0]/dd[1]/div[2]/dl[0]/dd[1]", "#PROTOCOL-LOGICALREP-MESSAGE-FORMATS/div[8]/dl[0]/dd[1]/div[4]/dl[0]/dd[1]", "#PROTOCOL-LOGICALREP-MESSAGE-FORMATS/div[8]/dl[0]/dd[1]/div[6]/dl[0]/dd[1]", 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\u8d77\u53ef\u7528\u3002\u4ee5\u4e0b\u6d88\u606f\u90e8\u5206\u4e3a\u4e0a\u8ff0\u6d88\u606f\u6240\u5171\u7528\u3002"]}], "signature": "TupleData", "description": ["\u903b\u8f91\u590d\u5236 TupleData \u683c\u5f0f\uff1a\u5217\u6570\u3002"], "manual_html": "<dl><dd>\n<div class=\"variablelist\">\n<dl class=\"variablelist\">\n<dt><span class=\"term\">Int16</span></dt>\n<dd>\n<p lang=\"zh\">\n<p>\u5217\u6570\u3002</p>\n</p>\n</dd>\n</dl>\n</div>\n<p lang=\"zh\">\u63a5\u4e0b\u6765\uff0c\u6bcf\u4e2a\u5df2\u53d1\u5e03\u7684\u5217\u90fd\u4f1a\u51fa\u73b0\u4ee5\u4e0b\u5b50\u6d88\u606f\u4e4b\u4e00\uff1a</p>\n<div class=\"variablelist\">\n<dl class=\"variablelist\">\n<dt><span class=\"term\">Byte1('n')</span></dt>\n<dd>\n<p lang=\"zh\">\n<p>\u5c06\u8be5\u6570\u636e\u6807\u8bc6\u4e3a NULL \u503c\u3002</p>\n</p>\n</dd>\n</dl>\n</div>\n<p lang=\"zh\">\u6216\u8005</p>\n<div class=\"variablelist\">\n<dl class=\"variablelist\">\n<dt><span class=\"term\">Byte1('u')</span></dt>\n<dd>\n<p lang=\"zh\">\n<p>\u6807\u8bc6\u7ecf\u8fc7 TOAST \u5904\u7406\u4e14\u672a\u66f4\u6539\u7684\u503c\uff08\u4e0d\u53d1\u9001\u5b9e\u9645\u503c\uff09\u3002</p>\n</p>\n</dd>\n</dl>\n</div>\n<p lang=\"zh\">\u6216\u8005</p>\n<div class=\"variablelist\">\n<dl class=\"variablelist\">\n<dt><span class=\"term\">Byte1('t')</span></dt>\n<dd>\n<p lang=\"zh\">\n<p>\u5c06\u8be5\u6570\u636e\u6807\u8bc6\u4e3a\u6587\u672c\u683c\u5f0f\u7684\u503c\u3002</p>\n</p>\n</dd>\n</dl>\n</div>\n<p lang=\"zh\">\u6216\u8005</p>\n<div class=\"variablelist\">\n<dl class=\"variablelist\">\n<dt><span class=\"term\">Byte1('b')</span></dt>\n<dd>\n<p lang=\"zh\">\n<p>\u5c06\u8be5\u6570\u636e\u6807\u8bc6\u4e3a\u4e8c\u8fdb\u5236\u683c\u5f0f\u7684\u503c\u3002</p>\n</p>\n</dd>\n<dt><span class=\"term\">Int32</span></dt>\n<dd>\n<p lang=\"zh\">\n<p>\u5217\u503c\u7684\u957f\u5ea6\u3002</p>\n</p>\n</dd>\n<dt lang=\"zh\">Byte n</dt>\n<dd>\n<p 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"original_url": "/docs/devel/protocol-logicalrep-message-formats.html#PROTOCOL-LOGICALREP-MESSAGE-FORMATS-TUPLEDATA"}], "sections": [{"title": "\u534f\u8bae\u4e0a\u4e0b\u6587", "paragraphs": ["\u672c\u8282\u8bf4\u660e\u5404\u903b\u8f91\u590d\u5236\u6d88\u606f\u7684\u8be6\u7ec6\u683c\u5f0f\u3002\u8fd9\u4e9b\u6d88\u606f\u7531\u590d\u5236\u69fd SQL \u63a5\u53e3\u8fd4\u56de\uff0c\u6216\u7531 walsender \u53d1\u9001\u3002\u7531 walsender \u53d1\u9001\u65f6\uff0c\u5b83\u4eec\u88ab\u5c01\u88c5\u5728\u590d\u5236\u534f\u8bae\u7684 WAL \u6d88\u606f\u4e2d\uff08\u53c2\u89c1\u7b2c 54.4 \u8282\uff09\uff0c\u6d88\u606f\u6d41\u7a0b\u901a\u5e38\u4e0e\u7269\u7406\u590d\u5236\u76f8\u540c\u3002Stream Start\u3001Stream Stop\u3001Stream Commit \u548c Stream Abort \u4ece\u534f\u8bae\u7248\u672c 2 \u8d77\u53ef\u7528\u3002Begin Prepare\u3001Prepare\u3001Commit Prepared\u3001Rollback Prepared \u548c Stream Prepare \u4ece\u534f\u8bae\u7248\u672c 3 \u8d77\u53ef\u7528\u3002\u4ee5\u4e0b\u6d88\u606f\u90e8\u5206\u4e3a\u4e0a\u8ff0\u6d88\u606f\u6240\u5171\u7528\u3002"]}], "signature": "TupleData", "description": ["\u903b\u8f91\u590d\u5236 TupleData \u683c\u5f0f\uff1a\u5217\u6570\u3002"], "manual_html": "<dl><dd>\n<div class=\"variablelist\">\n<dl class=\"variablelist\">\n<dt><span class=\"term\">Int16</span></dt>\n<dd>\n<p lang=\"zh\">\n<p>\u5217\u6570\u3002</p>\n</p>\n</dd>\n</dl>\n</div>\n<p lang=\"zh\">\u63a5\u4e0b\u6765\uff0c\u6bcf\u4e2a\u5df2\u53d1\u5e03\u7684\u5217\u90fd\u4f1a\u51fa\u73b0\u4ee5\u4e0b\u5b50\u6d88\u606f\u4e4b\u4e00\uff1a</p>\n<div class=\"variablelist\">\n<dl class=\"variablelist\">\n<dt><span class=\"term\">Byte1('n')</span></dt>\n<dd>\n<p lang=\"zh\">\n<p>\u5c06\u8be5\u6570\u636e\u6807\u8bc6\u4e3a NULL \u503c\u3002</p>\n</p>\n</dd>\n</dl>\n</div>\n<p lang=\"zh\">\u6216\u8005</p>\n<div class=\"variablelist\">\n<dl class=\"variablelist\">\n<dt><span class=\"term\">Byte1('u')</span></dt>\n<dd>\n<p lang=\"zh\">\n<p>\u6807\u8bc6\u7ecf\u8fc7 TOAST \u5904\u7406\u4e14\u672a\u66f4\u6539\u7684\u503c\uff08\u4e0d\u53d1\u9001\u5b9e\u9645\u503c\uff09\u3002</p>\n</p>\n</dd>\n</dl>\n</div>\n<p lang=\"zh\">\u6216\u8005</p>\n<div class=\"variablelist\">\n<dl class=\"variablelist\">\n<dt><span class=\"term\">Byte1('t')</span></dt>\n<dd>\n<p lang=\"zh\">\n<p>\u5c06\u8be5\u6570\u636e\u6807\u8bc6\u4e3a\u6587\u672c\u683c\u5f0f\u7684\u503c\u3002</p>\n</p>\n</dd>\n</dl>\n</div>\n<p lang=\"zh\">\u6216\u8005</p>\n<div class=\"variablelist\">\n<dl class=\"variablelist\">\n<dt><span class=\"term\">Byte1('b')</span></dt>\n<dd>\n<p lang=\"zh\">\n<p>\u5c06\u8be5\u6570\u636e\u6807\u8bc6\u4e3a\u4e8c\u8fdb\u5236\u683c\u5f0f\u7684\u503c\u3002</p>\n</p>\n</dd>\n<dt><span class=\"term\">Int32</span></dt>\n<dd>\n<p lang=\"zh\">\n<p>\u5217\u503c\u7684\u957f\u5ea6\u3002</p>\n</p>\n</dd>\n<dt lang=\"zh\">Byte n</dt>\n<dd>\n<p lang=\"zh\">\n<p>\u5217\u503c\uff0c\u91c7\u7528\u4e8c\u8fdb\u5236\u6216\u6587\u672c\u683c\u5f0f\uff08\u7531\u524d\u9762\u7684\u683c\u5f0f\u5b57\u8282\u6307\u5b9a\uff09\u3002<em class=\"replaceable\"><code>n</code></em> \u4e3a\u4e0a\u8ff0\u957f\u5ea6\u3002</p>\n</p>\n</dd>\n</dl>\n</div>\n</dd></dl>", "manual_path": "/docs/devel/protocol-logicalrep-message-formats.html", "localization": {"status": "complete", "sources": [{"url": "/docs/devel/protocol-logicalrep-message-formats.html", "method": "same-major semantic node", "sha256": "0368c68a321a90f36ca5e51d25a0d378d562e7078aa5b6f40dbf868f40387542", "language": "zh", "matched_nodes": ["#PROTOCOL-LOGICALREP-MESSAGE-FORMATS/div[2]/dl[0]/dd[9]/div[0]/dl[0]/dd[13]", "#PROTOCOL-LOGICALREP-MESSAGE-FORMATS/div[8]/dl[0]/dd[1]/div[2]/dl[0]/dd[1]", "#PROTOCOL-LOGICALREP-MESSAGE-FORMATS/div[8]/dl[0]/dd[1]/div[4]/dl[0]/dd[1]", "#PROTOCOL-LOGICALREP-MESSAGE-FORMATS/div[8]/dl[0]/dd[1]/div[6]/dl[0]/dd[1]", "#PROTOCOL-LOGICALREP-MESSAGE-FORMATS/div[8]/dl[0]/dd[1]/div[8]/dl[0]/dd[1]", "#PROTOCOL-LOGICALREP-MESSAGE-FORMATS/div[8]/dl[0]/dd[1]/div[8]/dl[0]/dd[3]", "#PROTOCOL-LOGICALREP-MESSAGE-FORMATS/div[8]/dl[0]/dd[1]/div[8]/dl[0]/dd[5]", "#PROTOCOL-LOGICALREP-MESSAGE-FORMATS/div[8]/dl[0]/dd[1]/p[1]", "#PROTOCOL-LOGICALREP-MESSAGE-FORMATS/div[8]/dl[0]/dd[1]/p[3]"]}], "language": "zh", "original_text": {"/summary": "Logical replication TupleData format. Number of columns.", "/category": "Logical replication formats", "/versions/20/description/0": "Logical replication TupleData format. Number of columns.", "/versions/20/facts/0/label": "Layer", "/versions/20/facts/0/value": "Logical replication payload; distinct from the frontend/backend message envelope", "/versions/20/facts/1/label": "First field", "/versions/20/tables/0/title": "Fields in documented order", "/versions/20/related/0/label": "Streaming replication protocol", "/versions/20/related/1/label": "Logical Decoding Plugins", "/versions/20/sections/0/title": "Protocol context", "/versions/20/tables/0/rows/0/c2": "Number of columns.", "/versions/20/tables/0/rows/1/c2": "Identifies the data as NULL value.", "/versions/20/tables/0/rows/2/c2": "Identifies unchanged TOASTed value (the actual value is not sent).", "/versions/20/tables/0/rows/3/c2": "Identifies the data as text formatted value.", "/versions/20/tables/0/rows/4/c2": "Identifies the data as binary formatted value.", "/versions/20/tables/0/rows/5/c2": "Length of the column value.", "/versions/20/tables/0/rows/6/c1": "Byte n", "/versions/20/tables/0/rows/6/c2": "The value of the column, either in binary or in text format. (As specified in the preceding format byte). n is the above length.", "/versions/20/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/20/tables/0/columns/0/label": "Position", "/versions/20/tables/0/columns/1/label": "Format", "/versions/20/tables/0/columns/2/label": "Meaning"}, "fallback_fields": [], "source_language": "en", "original_snapshot_sha256": "4bf59b48b6c9d6516d1e2a11285d9b6cde859563ef658087b07e86317a21ca8d"}, "comparison_data": {"layer": "logical replication", "fields": [{"format": "Int16", "description": "Number of columns."}, {"format": "Byte1('n')", "description": "Identifies the data as NULL value."}, {"format": "Byte1('u')", "description": "Identifies unchanged TOASTed value (the actual value is not sent)."}, {"format": "Byte1('t')", "description": "Identifies the data as text formatted value."}, {"format": "Byte1('b')", "description": "Identifies the data as binary formatted value."}, {"format": "Int32", "description": "Length of the column value."}, {"format": "Byte n", "description": "The value of the column, either in binary or in text format. 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"/docs/18/protocol-logicalrep-message-formats.html#PROTOCOL-LOGICALREP-MESSAGE-FORMATS-TUPLEDATA"}], "sections": [{"title": "\u534f\u8bae\u4e0a\u4e0b\u6587", "paragraphs": ["\u672c\u8282\u8bf4\u660e\u5404\u903b\u8f91\u590d\u5236\u6d88\u606f\u7684\u8be6\u7ec6\u683c\u5f0f\u3002\u8fd9\u4e9b\u6d88\u606f\u7531\u590d\u5236\u69fd SQL \u63a5\u53e3\u8fd4\u56de\uff0c\u6216\u7531 walsender \u53d1\u9001\u3002\u7531 walsender \u53d1\u9001\u65f6\uff0c\u5b83\u4eec\u88ab\u5c01\u88c5\u5728\u590d\u5236\u534f\u8bae\u7684 WAL \u6d88\u606f\u4e2d\uff08\u53c2\u89c1\u7b2c 54.4 \u8282\uff09\uff0c\u6d88\u606f\u6d41\u7a0b\u901a\u5e38\u4e0e\u7269\u7406\u590d\u5236\u76f8\u540c\u3002Stream Start\u3001Stream Stop\u3001Stream Commit \u548c Stream Abort \u4ece\u534f\u8bae\u7248\u672c 2 \u8d77\u53ef\u7528\u3002Begin Prepare\u3001Prepare\u3001Commit Prepared\u3001Rollback Prepared \u548c Stream Prepare \u4ece\u534f\u8bae\u7248\u672c 3 \u8d77\u53ef\u7528\u3002\u4ee5\u4e0b\u6d88\u606f\u90e8\u5206\u4e3a\u4e0a\u8ff0\u6d88\u606f\u6240\u5171\u7528\u3002"]}], "signature": "TupleData", "description": ["\u903b\u8f91\u590d\u5236 TupleData \u683c\u5f0f\uff1a\u5217\u6570\u3002"], "manual_html": "<dl><dd>\n<div class=\"variablelist\">\n<dl class=\"variablelist\">\n<dt><span class=\"term\">Int16</span></dt>\n<dd>\n<p lang=\"zh\">\n<p>\u5217\u6570\u3002</p>\n</p>\n</dd>\n</dl>\n</div>\n<p lang=\"zh\">\u63a5\u4e0b\u6765\uff0c\u6bcf\u4e2a\u5df2\u53d1\u5e03\u7684\u5217\u90fd\u4f1a\u51fa\u73b0\u4ee5\u4e0b\u5b50\u6d88\u606f\u4e4b\u4e00\uff1a</p>\n<div class=\"variablelist\">\n<dl class=\"variablelist\">\n<dt><span class=\"term\">Byte1('n')</span></dt>\n<dd>\n<p lang=\"zh\">\n<p>\u5c06\u8be5\u6570\u636e\u6807\u8bc6\u4e3a NULL \u503c\u3002</p>\n</p>\n</dd>\n</dl>\n</div>\n<p lang=\"zh\">\u6216\u8005</p>\n<div class=\"variablelist\">\n<dl class=\"variablelist\">\n<dt><span class=\"term\">Byte1('u')</span></dt>\n<dd>\n<p lang=\"zh\">\n<p>\u6807\u8bc6\u7ecf\u8fc7 TOAST \u5904\u7406\u4e14\u672a\u66f4\u6539\u7684\u503c\uff08\u4e0d\u53d1\u9001\u5b9e\u9645\u503c\uff09\u3002</p>\n</p>\n</dd>\n</dl>\n</div>\n<p lang=\"zh\">\u6216\u8005</p>\n<div class=\"variablelist\">\n<dl class=\"variablelist\">\n<dt><span class=\"term\">Byte1('t')</span></dt>\n<dd>\n<p lang=\"zh\">\n<p>\u5c06\u8be5\u6570\u636e\u6807\u8bc6\u4e3a\u6587\u672c\u683c\u5f0f\u7684\u503c\u3002</p>\n</p>\n</dd>\n</dl>\n</div>\n<p lang=\"zh\">\u6216\u8005</p>\n<div class=\"variablelist\">\n<dl class=\"variablelist\">\n<dt><span class=\"term\">Byte1('b')</span></dt>\n<dd>\n<p lang=\"zh\">\n<p>\u5c06\u8be5\u6570\u636e\u6807\u8bc6\u4e3a\u4e8c\u8fdb\u5236\u683c\u5f0f\u7684\u503c\u3002</p>\n</p>\n</dd>\n<dt><span class=\"term\">Int32</span></dt>\n<dd>\n<p lang=\"zh\">\n<p>\u5217\u503c\u7684\u957f\u5ea6\u3002</p>\n</p>\n</dd>\n<dt lang=\"zh\">Byte n</dt>\n<dd>\n<p lang=\"zh\">\n<p>\u5217\u503c\uff0c\u91c7\u7528\u4e8c\u8fdb\u5236\u6216\u6587\u672c\u683c\u5f0f\uff08\u7531\u524d\u9762\u7684\u683c\u5f0f\u5b57\u8282\u6307\u5b9a\uff09\u3002<em class=\"replaceable\"><code>n</code></em> \u4e3a\u4e0a\u8ff0\u957f\u5ea6\u3002</p>\n</p>\n</dd>\n</dl>\n</div>\n</dd></dl>", "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[9]/div[0]/dl[0]/dd[13]", "#PROTOCOL-LOGICALREP-MESSAGE-FORMATS/div[8]/dl[0]/dd[1]/div[2]/dl[0]/dd[1]", "#PROTOCOL-LOGICALREP-MESSAGE-FORMATS/div[8]/dl[0]/dd[1]/div[4]/dl[0]/dd[1]", "#PROTOCOL-LOGICALREP-MESSAGE-FORMATS/div[8]/dl[0]/dd[1]/div[6]/dl[0]/dd[1]", "#PROTOCOL-LOGICALREP-MESSAGE-FORMATS/div[8]/dl[0]/dd[1]/div[8]/dl[0]/dd[1]", "#PROTOCOL-LOGICALREP-MESSAGE-FORMATS/div[8]/dl[0]/dd[1]/div[8]/dl[0]/dd[3]", "#PROTOCOL-LOGICALREP-MESSAGE-FORMATS/div[8]/dl[0]/dd[1]/div[8]/dl[0]/dd[5]", "#PROTOCOL-LOGICALREP-MESSAGE-FORMATS/div[8]/dl[0]/dd[1]/p[1]", "#PROTOCOL-LOGICALREP-MESSAGE-FORMATS/div[8]/dl[0]/dd[1]/p[3]"]}], "language": "zh", "original_text": {"/versions/18/description/0": "Logical replication TupleData format. Number of columns.", "/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": "Number of columns.", "/versions/18/tables/0/rows/1/c2": "Identifies the data as NULL value.", "/versions/18/tables/0/rows/2/c2": "Identifies unchanged TOASTed value (the actual value is not sent).", "/versions/18/tables/0/rows/3/c2": "Identifies the data as text formatted value.", "/versions/18/tables/0/rows/4/c2": "Identifies the data as binary formatted value.", "/versions/18/tables/0/rows/5/c2": "Length of the column value.", "/versions/18/tables/0/rows/6/c1": "Byte n", "/versions/18/tables/0/rows/6/c2": "The value of the column, either in binary or in text format. (As specified in the preceding format byte). n is the above length.", "/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": "b069f3e0d81338cf516f0c573460a0b33348d0e25d97fcf2047759bcaccdeb27"}, "comparison_data": {"layer": "logical replication", "fields": [{"format": "Int16", "description": "Number of columns."}, {"format": "Byte1('n')", "description": "Identifies the data as NULL value."}, {"format": "Byte1('u')", "description": "Identifies unchanged TOASTed value (the actual value is not sent)."}, {"format": "Byte1('t')", "description": "Identifies the data as text formatted value."}, {"format": "Byte1('b')", "description": "Identifies the data as binary formatted value."}, {"format": "Int32", "description": "Length of the column value."}, {"format": "Byte n", "description": "The value of the column, either in binary or in text format. (As specified in the preceding format byte). n is the above length."}]}, "comparison_hash": "cd3ef259b145bd3bd43cb6212efe54d716871132f92df99b0cc8d685cc43c2fd", "manual_language": "zh"}, "comparison": {"left": "13", "right": "14", "status": "changed", "diff": "--- PostgreSQL 13\n+++ PostgreSQL 14\n@@ -17,11 +17,15 @@\n       \"format\": \"Byte1('t')\"\n     },\n     {\n+      \"description\": \"Identifies the data as binary formatted value.\",\n+      \"format\": \"Byte1('b')\"\n+    },\n+    {\n       \"description\": \"Length of the column value.\",\n       \"format\": \"Int32\"\n     },\n     {\n-      \"description\": \"The value of the column, in text format. (A future release might support additional formats.) n is the above length.\",\n+      \"description\": \"The value of the column, either in binary or in text format. (As specified in the preceding format byte). n is the above length.\",\n       \"format\": \"Byte n\"\n     }\n   ],"}}