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\u6307\u7528\u6237\u914d\u7f6e\u6587\u4ef6\u5939\u4e2d\u7684\u5e94\u7528\u6570\u636e\u5b50\u76ee\u5f55\uff09\u3002\u53ef\u4ee5\u901a\u8fc7\u8bbe\u7f6e\u73af\u5883\u53d8\u91cf PGSERVICEFILE \u6765\u6307\u5b9a\u4e0d\u540c\u7684\u6587\u4ef6\u540d\u3002\u7cfb\u7edf\u8303\u56f4\u7684\u6587\u4ef6\u540d\u4e3a pg_service.conf \u3002\u9ed8\u8ba4\u60c5\u51b5\u4e0b\uff0c\u5728 PostgreSQL \u5b89\u88c5\u7684 etc \u76ee\u5f55\u4e2d\u5bfb\u627e\uff08\u4f7f\u7528 pg_config --sysconfdir \u6765\u51c6\u786e\u8bc6\u522b\u6b64\u76ee\u5f55\uff09\u3002\u53ef\u4ee5\u901a\u8fc7\u8bbe\u7f6e\u73af\u5883\u53d8\u91cf PGSYSCONFDIR \u6765\u6307\u5b9a\u53e6\u4e00\u4e2a\u76ee\u5f55\uff0c\u4f46\u4e0d\u80fd\u6307\u5b9a\u4e0d\u540c\u7684\u6587\u4ef6\u540d\u3002", 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["#LIBPQ-ENVARS/p[2]"]}, {"url": "/docs/11/libpq-pgservice.html", "method": "same-major semantic node", "sha256": "75b71911d8a339c968c0b84531b4ac1922b3eac509a3aa0f899773ed1ad6d494", "language": "zh", "matched_nodes": ["#LIBPQ-PGSERVICE/p[5]", "#LIBPQ-PGSERVICE/p[9]"]}], "language": "zh", "original_text": {"/versions/11/description/0": "Ignored (formerly, this specified where to send server debug output).", "/versions/11/facts/0/label": "Client library", "/versions/11/facts/1/label": "Manual definition", "/versions/11/facts/1/value": "Documented", "/versions/11/facts/2/label": "Source environment fallback", "/versions/11/facts/3/label": "Compiled fallback expression", "/versions/11/related/0/label": "Connection service file", "/versions/11/related/1/label": "Password file", "/versions/11/related/2/label": "All libpq environment variables", "/versions/11/sections/0/title": "Default resolution and service-file precedence", "/versions/11/sections/1/title": "Environment variable evidence", "/versions/11/sections/2/title": "Source declaration notes", "/versions/11/sections/0/paragraphs/0": "The following environment variables can be used to select default connection parameter values, which will be used by PQconnectdb , PQsetdbLogin and PQsetdb if no value is directly specified by the calling code. These are useful to avoid hard-coding database connection information into simple client applications, for example.", "/versions/11/sections/0/paragraphs/1": "Service names can be defined in either a per-user service file or a system-wide file. If the same service name exists in both the user and the system file, the user file takes precedence. By default, the per-user service file is named ~/.pg_service.conf . On Microsoft Windows, it is named %APPDATA%\\postgresql\\.pg_service.conf (where %APPDATA% refers to the Application Data subdirectory in the user's profile). A different file name can be specified by setting the environment variable PGSERVICEFILE . The system-wide file is named pg_service.conf . By default it is sought in the etc directory of the PostgreSQL installation (use pg_config --sysconfdir to identify this directory precisely). 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For example, using the above service file, a connection string service=mydb port=5434 will use host somehost , port 5434 , user admin , and other parameters as set by environment variables or built-in defaults.", "/versions/11/sections/2/paragraphs/0": "\"tty\" is no longer used either, but keep it present for backwards compatibility."}, "fallback_fields": [], "source_language": "en", "original_snapshot_sha256": "68f55516cdb5863a267f5aef1880eff379068e9faddb319f3e4cc7b4f39434a1"}, "source_option": {"keyword": "tty", "declaration": "\"tty\", \"PGTTY\", DefaultTty, NULL, \"Backend-Debug-TTY\", \"D\", 40, offsetof(struct pg_conn, pgtty)", "environment": "PGTTY", "source_notes": ["\"tty\" is no longer used either, but keep it present for backwards compatibility."], "compiled_default_expression": "DefaultTty"}, "comparison_data": {"keyword": "tty", "definition": "Ignored (formerly, this specified where to send server debug output).", "documented": true, "environment": "PGTTY", "default_evidence": [], "compiled_default_expression": "DefaultTty"}, "comparison_hash": "64a0b183ec175592478f5961560dc96e395aadca4c83689cb4fba4a69486aa76", "manual_language": "zh", "default_evidence": [], "precedence_evidence": ["The following environment variables can be used to select default connection parameter values, which will be used by PQconnectdb , PQsetdbLogin and PQsetdb if no value is directly specified by the calling code. These are useful to avoid hard-coding database connection information into simple client applications, for example.", "Service names can be defined in either a per-user service file or a system-wide file. If the same service name exists in both the user and the system file, the user file takes precedence. By default, the per-user service file is named ~/.pg_service.conf . On Microsoft Windows, it is named %APPDATA%\\postgresql\\.pg_service.conf (where %APPDATA% refers to the Application Data subdirectory in the user's profile). A different file name can be specified by setting the environment variable PGSERVICEFILE . The system-wide file is named pg_service.conf . By default it is sought in the etc directory of the PostgreSQL installation (use pg_config --sysconfdir to identify this directory precisely). 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"8df3c0474782589d3c6f374b5133b1bd14d168086edbc13c6e72e67dd4527a3b"}, "sources": [{"url": "https://pg.center/docs/12/libpq-connect.html#LIBPQ-CONNECT-TTY", "file": "libpq-connect.html", "label": "12.22 English manual \u00b7 libpq-connect.html", "anchor": "LIBPQ-CONNECT-TTY", "sha256": "600a43dc93518d62d1c83c8b09d4b695bf1a04e4a5a58b239dc9aa287e83f3d2", "language": "en", "original_url": "/docs/12/libpq-connect.html#LIBPQ-CONNECT-TTY"}, {"url": "https://ftp.postgresql.org/pub/source/v12.22/postgresql-12.22.tar.bz2", "file": "src/interfaces/libpq/fe-connect.c", "label": "12.22 libpq connection option declarations", "sha256": "c7b1ad8e03dd5655cabab7572b0a3dc3c9d0f8f1646a5d03a92cd4edbb1d021b", "archive_sha256": "8df3c0474782589d3c6f374b5133b1bd14d168086edbc13c6e72e67dd4527a3b"}, {"url": "https://pg.center/docs/12/libpq-envars.html", "file": "libpq-envars.html", "label": "12.22 English manual \u00b7 libpq-envars.html", "anchor": "", "sha256": 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These are useful to avoid hard-coding database connection information into simple client applications, for example.", "/versions/13/sections/0/paragraphs/1": "Service names can be defined in either a per-user service file or a system-wide file. If the same service name exists in both the user and the system file, the user file takes precedence. By default, the per-user service file is named ~/.pg_service.conf . On Microsoft Windows, it is named %APPDATA%\\postgresql\\.pg_service.conf (where %APPDATA% refers to the Application Data subdirectory in the user's profile). A different file name can be specified by setting the environment variable PGSERVICEFILE . The system-wide file is named pg_service.conf . By default it is sought in the etc directory of the PostgreSQL installation (use pg_config --sysconfdir to identify this directory precisely). Another directory, but not a different file name, can be specified by setting the environment variable PGSYSCONFDIR .", "/versions/13/sections/0/paragraphs/2": "Connection parameters obtained from a service file are combined with parameters obtained from other sources. A service file setting overrides the corresponding environment variable, and in turn can be overridden by a value given directly in the connection string. For example, using the above service file, a connection string service=mydb port=5434 will use host somehost , port 5434 , user admin , and other parameters as set by environment variables or built-in defaults.", "/versions/13/sections/2/paragraphs/0": "\"tty\" is no longer used either, but keep it present for backwards compatibility."}, "fallback_fields": [], "source_language": "en", "original_snapshot_sha256": "689f2286fe8e53016becf7b53605b59615bec685d03c4b8ff5b6873707a0c351"}, "source_option": {"keyword": "tty", "declaration": "\"tty\", \"PGTTY\", DefaultTty, NULL, \"Backend-Debug-TTY\", \"D\", 40, offsetof(struct pg_conn, pgtty)", "environment": "PGTTY", "source_notes": ["\"tty\" is no longer used either, but keep it present for backwards compatibility."], "compiled_default_expression": "DefaultTty"}, "comparison_data": {"keyword": "tty", "definition": "Ignored (formerly, this specified where to send server debug output).", "documented": true, "environment": "PGTTY", "default_evidence": [], "compiled_default_expression": "DefaultTty"}, "comparison_hash": "64a0b183ec175592478f5961560dc96e395aadca4c83689cb4fba4a69486aa76", "manual_language": "zh", "default_evidence": [], "precedence_evidence": ["The following environment variables can be used to select default connection parameter values, which will be used by PQconnectdb , PQsetdbLogin and PQsetdb if no value is directly specified by the calling code. These are useful to avoid hard-coding database connection information into simple client applications, for example.", "Service names can be defined in either a per-user service file or a system-wide file. If the same service name exists in both the user and the system file, the user file takes precedence. By default, the per-user service file is named ~/.pg_service.conf . On Microsoft Windows, it is named %APPDATA%\\postgresql\\.pg_service.conf (where %APPDATA% refers to the Application Data subdirectory in the user's profile). A different file name can be specified by setting the environment variable PGSERVICEFILE . The system-wide file is named pg_service.conf . By default it is sought in the etc directory of the PostgreSQL installation (use pg_config --sysconfdir to identify this directory precisely). Another directory, but not a different file name, can be specified by setting the environment variable PGSYSCONFDIR .", "Connection parameters obtained from a service file are combined with parameters obtained from other sources. A service file setting overrides the corresponding environment variable, and in turn can be overridden by a value given directly in the connection string. For example, using the above service file, a connection string service=mydb port=5434 will use host somehost , port 5434 , user admin , and other parameters as set by environment variables or built-in defaults."]}}}, "snapshot": null, "comparison": {"left": "13", "right": "14", "status": "removed", "diff": "--- PostgreSQL 13\n+++ PostgreSQL 14\n@@ -1,8 +1 @@\n-{\n-  \"compiled_default_expression\": \"DefaultTty\",\n-  \"default_evidence\": [],\n-  \"definition\": \"Ignored (formerly, this specified where to send server debug output).\",\n-  \"documented\": true,\n-  \"environment\": \"PGTTY\",\n-  \"keyword\": \"tty\"\n-}\n+\u8be5\u7248\u672a\u6536\u5f55"}}