对于运行 9.6.X 的用户，不需要转储/恢复。
\n不过，如果你是从 9.6.16 之前的版本升级，参见第 E.9 节。
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\n不过，如果你是从 9.6.16 之前的版本升级，参见第 E.9 节。
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\n这避免了此类计划节点需要被扫描多次时的失败，例如当它位于 nestloop 内侧时。
", "text": "防止位于 Limit 节点之下的 Gather 或 GatherMerge 计划节点过早关闭（Amit Kapila） 这避免了此类计划节点需要被扫描多次时的失败，例如当它位于 nestloop 内侧时。", "title": "防止位于 Limit 节点之下的 Gather 或 GatherMerge 计划节点过早关闭", "commits": [], "section": "变更", "category": "improvement", "source_url": "/docs/release/9.6.17/#id-1.11.6.12.5", "source_hash": "5044f042baacaa08448d04861de44433908c0c6c273e1764f5099a4ebb38697e", "section_path": ["变更"], "commit_groups": [["080313f82", "1ad0df67c", "1cc3a90c7", "d0ccfa9d6", "f7ae68aac"]], "identity_text": "Prevent premature shutdown of a Gather or GatherMerge plan node that is underneath a Limit node (Amit Kapila) This avoids failure if such a plan node needs to be scanned more than once, as for instance if it is on the inside of a nestloop.", "commit_aliases": ["080313f82", "1ad0df67c", "1cc3a90c7", "d0ccfa9d6", "f7ae68aac"], "source_commits": ["1ad0df67c"], "source_entry_id": "9.6.17/changes/004", "db_id": "3b9453a17ccc702c506c79746e5ba421", "patch_ids": ["ae20cbf89e29f4005017f037b249493b"], "statement_hash": "1f92ba2fffc4a678b50d81f64a3f0e9f14dd99adf8edc4996af62aade7874ca6", "relations": [{"rule": 2, "type": "equivalent", "target": "0736925131e2a1aa47c59c632711680f", "evidence": {"same_day": true, "patch_ids": ["ae20cbf89e29f4005017f037b249493b"], "statement_hash": "1f92ba2fffc4a678b50d81f64a3f0e9f14dd99adf8edc4996af62aade7874ca6"}}, {"rule": 2, "type": "equivalent", "target": "5f88ee03759351364b6139686c2c4363", "evidence": {"same_day": true, "patch_ids": ["ae20cbf89e29f4005017f037b249493b"], "statement_hash": "1f92ba2fffc4a678b50d81f64a3f0e9f14dd99adf8edc4996af62aade7874ca6"}}, {"rule": 2, "type": "equivalent", "target": "c522b4d56b52473e55baecaf0a9ee541", "evidence": {"same_day": true, "patch_ids": ["ae20cbf89e29f4005017f037b249493b"], "statement_hash": "1f92ba2fffc4a678b50d81f64a3f0e9f14dd99adf8edc4996af62aade7874ca6"}}], "version": "9.6.17", "category_label": "其他改进", "also_in": [], "variants": [], "related_changes": [{"db_id": "0736925131e2a1aa47c59c632711680f", "kind": "equivalent", "version": "12.2", "label": "12.2", "title": "防止过早关闭位于 Limit 节点下方的 Gather 或 GatherMerge 计划节点", "evidence": {"same_day": true, "patch_ids": ["ae20cbf89e29f4005017f037b249493b"], "statement_hash": "1f92ba2fffc4a678b50d81f64a3f0e9f14dd99adf8edc4996af62aade7874ca6"}, "url": "/docs/compare/?release=12.2#12.2-f220ed06d9d08439", "source_url": "/docs/release/12.2/#id-1.11.6.26.5"}, {"db_id": "5f88ee03759351364b6139686c2c4363", "kind": "equivalent", "version": "11.7", "label": "11.7", "title": "防止过早关闭位于 Limit 节点下方的 Gather 或 GatherMerge 计划节点", "evidence": {"same_day": true, "patch_ids": ["ae20cbf89e29f4005017f037b249493b"], "statement_hash": "1f92ba2fffc4a678b50d81f64a3f0e9f14dd99adf8edc4996af62aade7874ca6"}, "url": "/docs/compare/?release=11.7#11.7-4ca5fbf6a06d3712", "source_url": "/docs/release/11.7/#id-1.11.6.20.5"}, {"db_id": "c522b4d56b52473e55baecaf0a9ee541", "kind": "equivalent", "version": "10.12", "label": "10.12", "title": "防止过早关闭位于 Limit 节点下方的 Gather 或 GatherMerge 计划节点", "evidence": {"same_day": true, "patch_ids": ["ae20cbf89e29f4005017f037b249493b"], "statement_hash": "1f92ba2fffc4a678b50d81f64a3f0e9f14dd99adf8edc4996af62aade7874ca6"}, "url": "/docs/compare/?release=10.12#10.12-4ca5fbf6a06d3712", "source_url": "/docs/release/10.12/#id-1.11.6.16.5"}]}, {"id": "9.6.17-3cba81c9a7bf45df", "cves": [], "html": "避免没有空闲动态共享内存槽位时的内存泄漏（Thomas Munro）
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这避免了临时表带有 ON COMMIT 动作时的奇怪失败。反正对临时表使用 CONCURRENTLY 没有益处，因为其他会话无法访问该表，额外的处理毫无意义。
修复重置标记为 ON COMMIT DELETE ROWS 的临时表上的表达式索引时可能的失败（Tom Lane）
修复对 box、range 和 inet 数据类型执行 BRIN 索引操作时可能的崩溃（Heikki Linnakangas）
修复 GIN 索引中对已删除页的处理（Alexander Korotkov）
\n避免可能的死锁、已删除页状态的错误更新，以及穿过最近删除页的遍历失败。
", "text": "修复 GIN 索引中对已删除页的处理（Alexander Korotkov） 避免可能的死锁、已删除页状态的错误更新，以及穿过最近删除页的遍历失败。", "title": "修复 GIN 索引中对已删除页的处理", "commits": [], "section": "变更", "category": "bugfix", "source_url": "/docs/release/9.6.17/#id-1.11.6.12.5", "source_hash": "d370ba5411edd13ee37c902a0718707541d83c4830bb49ec4243e295f7cfff13", "section_path": ["变更"], "commit_groups": [["051c50c01", "21ad61ab3", "9f2927989", "e14641197"], ["1414821e1", "4fc485684", "99f5888d3", "ab64b474d", "c0bf35421", "d5ad7a09a", "ee437ca74"], ["4093ff573", "baf487123", "f91706b00"], ["7d467dee0", "a64e7e05a", "b10714080"]], "identity_text": "Fix handling of deleted pages in GIN indexes (Alexander Korotkov) Avoid possible deadlocks, incorrect updates of a deleted page's state, and failure to traverse through a recently-deleted page.", "commit_aliases": ["051c50c01", "1414821e1", "21ad61ab3", "4093ff573", "4fc485684", "7d467dee0", "99f5888d3", "9f2927989", "a64e7e05a", "ab64b474d", "b10714080", "baf487123", "c0bf35421", "d5ad7a09a", 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修复按引用传递的聚合转换状态不太可能的崩溃（Andres Freund、Teodor Sigaev）
", "text": "修复按引用传递的聚合转换状态不太可能的崩溃（Andres Freund、Teodor Sigaev）", "title": "修复按引用传递的聚合转换状态不太可能的崩溃", "commits": [], "section": "变更", "category": "bugfix", "source_url": "/docs/release/9.6.17/#id-1.11.6.12.5", "source_hash": "e3a8cde999f990b67762e4cfa5dc0d1119fd9b7d9fc37ebbf108f0be990593f6", "section_path": ["变更"], "commit_groups": [["21fdfd0e8", "8bb006a41", "affdde2e1", "ba1dfbe22", "c8e0e560e", "d4c339924", "f651976d9"]], "identity_text": "Fix unlikely crash with pass-by-reference aggregate transition states (Andres Freund, Teodor Sigaev)", "commit_aliases": ["21fdfd0e8", "8bb006a41", "affdde2e1", "ba1dfbe22", "c8e0e560e", "d4c339924", "f651976d9"], "source_commits": ["d4c339924"], "source_entry_id": "9.6.17/changes/011", "db_id": "aa38fe8a84a05ccb7d5ca2231a4a9ab2", "patch_ids": ["730f997a58a04f63067e9ce63b4b26a6"], "statement_hash": "247ecf8b0f57ea41bff13f5eb478cd6d22e7b98f79a7290a54702aa6470249b2", "relations": [{"rule": 2, "type": "equivalent", "target": "36852c66d198f3d3882a089f2fe0f1b9", "evidence": {"same_day": true, "patch_ids": ["730f997a58a04f63067e9ce63b4b26a6"], "statement_hash": "247ecf8b0f57ea41bff13f5eb478cd6d22e7b98f79a7290a54702aa6470249b2"}}, {"rule": 2, "type": "equivalent", "target": "55eecb13c679c1b456e4f63a0afa50a3", "evidence": {"same_day": true, "patch_ids": ["730f997a58a04f63067e9ce63b4b26a6"], "statement_hash": "247ecf8b0f57ea41bff13f5eb478cd6d22e7b98f79a7290a54702aa6470249b2"}}, {"rule": 2, "type": "equivalent", "target": "7bbdbe671f37e7a8f307651f9934bbb5", "evidence": {"same_day": true, "patch_ids": ["730f997a58a04f63067e9ce63b4b26a6"], "statement_hash": "247ecf8b0f57ea41bff13f5eb478cd6d22e7b98f79a7290a54702aa6470249b2"}}, {"rule": 2, "type": "equivalent", "target": "7c398b24a82fde3f229eb10a248b5b97", "evidence": {"same_day": true, "patch_ids": ["730f997a58a04f63067e9ce63b4b26a6"], "statement_hash": "247ecf8b0f57ea41bff13f5eb478cd6d22e7b98f79a7290a54702aa6470249b2"}}, {"rule": 2, "type": "equivalent", "target": "a4516e116251828c608ebe40de67937c", "evidence": {"same_day": true, "patch_ids": ["730f997a58a04f63067e9ce63b4b26a6"], "statement_hash": "247ecf8b0f57ea41bff13f5eb478cd6d22e7b98f79a7290a54702aa6470249b2"}}], "version": "9.6.17", "category_label": "BUG 修复", "also_in": [], "variants": [], "related_changes": [{"db_id": "7c398b24a82fde3f229eb10a248b5b97", "kind": "equivalent", "version": "12.2", "label": "12.2", "title": "修复使用按引用传递的聚合转换状态时发生的罕见崩溃", "evidence": {"same_day": true, "patch_ids": ["730f997a58a04f63067e9ce63b4b26a6"], "statement_hash": "247ecf8b0f57ea41bff13f5eb478cd6d22e7b98f79a7290a54702aa6470249b2"}, "url": "/docs/compare/?release=12.2#12.2-30062929998dd8f5", "source_url": "/docs/release/12.2/#id-1.11.6.26.5"}, {"db_id": "55eecb13c679c1b456e4f63a0afa50a3", "kind": "equivalent", "version": "11.7", "label": "11.7", "title": "修复使用按引用传递的聚合转换状态时发生的罕见崩溃", "evidence": {"same_day": true, "patch_ids": ["730f997a58a04f63067e9ce63b4b26a6"], "statement_hash": "247ecf8b0f57ea41bff13f5eb478cd6d22e7b98f79a7290a54702aa6470249b2"}, "url": "/docs/compare/?release=11.7#11.7-1145da8fb2f19235", "source_url": "/docs/release/11.7/#id-1.11.6.20.5"}, {"db_id": "7bbdbe671f37e7a8f307651f9934bbb5", "kind": "equivalent", "version": "10.12", "label": "10.12", "title": "修复使用按引用传递的聚合转换状态时发生的罕见崩溃", "evidence": {"same_day": true, "patch_ids": ["730f997a58a04f63067e9ce63b4b26a6"], "statement_hash": "247ecf8b0f57ea41bff13f5eb478cd6d22e7b98f79a7290a54702aa6470249b2"}, "url": "/docs/compare/?release=10.12#10.12-1145da8fb2f19235", "source_url": "/docs/release/10.12/#id-1.11.6.16.5"}, {"db_id": "a4516e116251828c608ebe40de67937c", "kind": "equivalent", "version": "9.5.21", "label": "9.5.21", "title": "修复按引用传递的聚合转换状态不太可能的崩溃", "evidence": {"same_day": true, "patch_ids": ["730f997a58a04f63067e9ce63b4b26a6"], "statement_hash": "247ecf8b0f57ea41bff13f5eb478cd6d22e7b98f79a7290a54702aa6470249b2"}, "url": "/docs/compare/?release=9.5.21#9.5.21-3c11e63680e64497", "source_url": "/docs/release/9.5.21/#id-1.11.6.9.5"}, {"db_id": "36852c66d198f3d3882a089f2fe0f1b9", "kind": "equivalent", "version": "9.4.26", "label": "9.4.26", "title": "修复按引用传递的聚合转换状态不太可能的崩溃", "evidence": {"same_day": true, "patch_ids": ["730f997a58a04f63067e9ce63b4b26a6"], "statement_hash": "247ecf8b0f57ea41bff13f5eb478cd6d22e7b98f79a7290a54702aa6470249b2"}, "url": "/docs/compare/?release=9.4.26#9.4.26-3c11e63680e64497", "source_url": "/docs/release/9.4.26/#id-1.11.6.5.6"}]}, {"id": "9.6.17-b115320876673b56", "cves": [], "html": "改进 to_date() 和 to_timestamp() 中的错误报告（Tom Lane、Álvaro Herrera）
关于输入字符串中不正确月份或日期名称的报告，可能在多字节字符中间截断输入，导致错误编码的错误消息并引发后续失败。现在改为在下一个空白处截断。
", "text": "改进 to_date() 和 to_timestamp() 中的错误报告（Tom Lane、Álvaro Herrera） 关于输入字符串中不正确月份或日期名称的报告，可能在多字节字符中间截断输入，导致错误编码的错误消息并引发后续失败。现在改为在下一个空白处截断。", "title": "改进 to_date() 和 to_timestamp() 中的错误报告", "commits": [], "section": "变更", "category": "improvement", "source_url": "/docs/release/9.6.17/#id-1.11.6.12.5", "source_hash": "b8e9685b7e0be50a64fe8219ed7bf855fea6068a7c7987125824976a871f1543", "section_path": ["变更"], "commit_groups": [["0e63d9641", "451f50813", "7a9fef299", "8fc33e6cc", "9a3a75cb8", "d6a9548b2", "f309c812e"], ["212b870d6", "4c70098ff", "600b953d7", "9e24575f6", "a576f2a8f", "be13f227f", "fb12aefaa"]], "identity_text": "Improve error reporting in to_date() and to_timestamp() (Tom Lane, Álvaro Herrera) Reports about incorrect month or day names in input strings could truncate the input in the middle of a multi-byte character, leading to an improperly encoded error message that could cause follow-on failures. Truncate at the next whitespace instead.", "commit_aliases": ["0e63d9641", "212b870d6", "451f50813", "4c70098ff", "600b953d7", "7a9fef299", "8fc33e6cc", "9a3a75cb8", "9e24575f6", "a576f2a8f", "be13f227f", "d6a9548b2", "f309c812e", "fb12aefaa"], "source_commits": ["451f50813", "9e24575f6"], "source_entry_id": "9.6.17/changes/012", "db_id": "ba9b3b2bf6101c85ca968cf1bc4c2a39", "patch_ids": ["881a4ad4e73e5bd4a9e5a289b084a789", "b3676034f161a2b8e0f55f02dbf6ca1d"], "statement_hash": "9e20b30958a588fb9e31c02ef288f2ed5e1df59831e7e09f29ac2a8de8f66856", "relations": [{"rule": 2, "type": "equivalent", "target": "2e88f289c1234dc88f881d954d466e4a", "evidence": {"same_day": true, "patch_ids": ["881a4ad4e73e5bd4a9e5a289b084a789", "b3676034f161a2b8e0f55f02dbf6ca1d"], "statement_hash": "9e20b30958a588fb9e31c02ef288f2ed5e1df59831e7e09f29ac2a8de8f66856"}}, {"rule": 2, "type": "equivalent", "target": "39630b7768bb1c46d4b6752581ccf6ce", "evidence": {"same_day": true, "patch_ids": ["881a4ad4e73e5bd4a9e5a289b084a789", "b3676034f161a2b8e0f55f02dbf6ca1d"], "statement_hash": "9e20b30958a588fb9e31c02ef288f2ed5e1df59831e7e09f29ac2a8de8f66856"}}, {"rule": 2, "type": "equivalent", "target": "70492e26779a8a1656d44ae93b8feaa6", "evidence": {"same_day": true, "patch_ids": ["881a4ad4e73e5bd4a9e5a289b084a789", "b3676034f161a2b8e0f55f02dbf6ca1d"], "statement_hash": "9e20b30958a588fb9e31c02ef288f2ed5e1df59831e7e09f29ac2a8de8f66856"}}, {"rule": 2, "type": "equivalent", "target": "cdbf4f801b3c350a10257de0582a1372", "evidence": {"same_day": true, "patch_ids": ["881a4ad4e73e5bd4a9e5a289b084a789", "b3676034f161a2b8e0f55f02dbf6ca1d"], "statement_hash": "9e20b30958a588fb9e31c02ef288f2ed5e1df59831e7e09f29ac2a8de8f66856"}}, {"rule": 2, "type": "equivalent", "target": "e5a881c43afb38e00e461fd4d589dc16", "evidence": {"same_day": true, "patch_ids": ["881a4ad4e73e5bd4a9e5a289b084a789", "b3676034f161a2b8e0f55f02dbf6ca1d"], "statement_hash": "9e20b30958a588fb9e31c02ef288f2ed5e1df59831e7e09f29ac2a8de8f66856"}}], "version": "9.6.17", "category_label": "其他改进", "also_in": [], "variants": [], "related_changes": [{"db_id": "2e88f289c1234dc88f881d954d466e4a", "kind": "equivalent", "version": "12.2", "label": "12.2", "title": "改进 to_date() 和 to_timestamp() 中的错误报告", "evidence": {"same_day": true, "patch_ids": ["881a4ad4e73e5bd4a9e5a289b084a789", "b3676034f161a2b8e0f55f02dbf6ca1d"], "statement_hash": "9e20b30958a588fb9e31c02ef288f2ed5e1df59831e7e09f29ac2a8de8f66856"}, "url": "/docs/compare/?release=12.2#12.2-0bc48a9f176e3069", "source_url": "/docs/release/12.2/#id-1.11.6.26.5"}, {"db_id": "70492e26779a8a1656d44ae93b8feaa6", "kind": "equivalent", "version": "11.7", "label": "11.7", "title": "改进 to_date() 和 to_timestamp() 中的错误报告", "evidence": {"same_day": true, "patch_ids": ["881a4ad4e73e5bd4a9e5a289b084a789", "b3676034f161a2b8e0f55f02dbf6ca1d"], "statement_hash": "9e20b30958a588fb9e31c02ef288f2ed5e1df59831e7e09f29ac2a8de8f66856"}, "url": "/docs/compare/?release=11.7#11.7-b115320876673b56", "source_url": "/docs/release/11.7/#id-1.11.6.20.5"}, {"db_id": "cdbf4f801b3c350a10257de0582a1372", "kind": "equivalent", "version": "10.12", "label": "10.12", "title": "改进 to_date() 和 to_timestamp() 中的错误报告", "evidence": {"same_day": true, "patch_ids": ["881a4ad4e73e5bd4a9e5a289b084a789", "b3676034f161a2b8e0f55f02dbf6ca1d"], "statement_hash": "9e20b30958a588fb9e31c02ef288f2ed5e1df59831e7e09f29ac2a8de8f66856"}, "url": "/docs/compare/?release=10.12#10.12-b115320876673b56", "source_url": "/docs/release/10.12/#id-1.11.6.16.5"}, {"db_id": "39630b7768bb1c46d4b6752581ccf6ce", "kind": "equivalent", "version": "9.5.21", "label": "9.5.21", "title": "改进 to_date() 和 to_timestamp() 中的错误报告", "evidence": {"same_day": true, "patch_ids": ["881a4ad4e73e5bd4a9e5a289b084a789", "b3676034f161a2b8e0f55f02dbf6ca1d"], "statement_hash": "9e20b30958a588fb9e31c02ef288f2ed5e1df59831e7e09f29ac2a8de8f66856"}, "url": "/docs/compare/?release=9.5.21#9.5.21-b115320876673b56", "source_url": "/docs/release/9.5.21/#id-1.11.6.9.5"}, {"db_id": "e5a881c43afb38e00e461fd4d589dc16", "kind": "equivalent", "version": "9.4.26", "label": "9.4.26", "title": "改进 to_date() 和 to_timestamp() 中的错误报告", "evidence": {"same_day": true, "patch_ids": ["881a4ad4e73e5bd4a9e5a289b084a789", "b3676034f161a2b8e0f55f02dbf6ca1d"], "statement_hash": "9e20b30958a588fb9e31c02ef288f2ed5e1df59831e7e09f29ac2a8de8f66856"}, "url": "/docs/compare/?release=9.4.26#9.4.26-b115320876673b56", "source_url": "/docs/release/9.4.26/#id-1.11.6.5.6"}]}, {"id": "9.6.17-c797d83d4d4b0861", "cves": [], "html": "修复公元前日期的 EXTRACT(ISOYEAR FROM 的差一结果（Tom Lane）timestamp)
避免系统目录中存在自引用视图时 information_schema 视图中的栈溢出（Tom Lane）
自引用视图无法工作；它总是导致无限递归。我们在尝试执行该视图时能正确处理这种情况，但在查询它是否自动可更新时不能。
", "text": "避免系统目录中存在自引用视图时 information_schema 视图中的栈溢出（Tom Lane） 自引用视图无法工作；它总是导致无限递归。我们在尝试执行该视图时能正确处理这种情况，但在查询它是否自动可更新时不能。", "title": "避免系统目录中存在自引用视图时 information_schema 视图中的栈溢出", "commits": [], "section": "变更", "category": "bugfix", "source_url": "/docs/release/9.6.17/#id-1.11.6.12.5", "source_hash": "4137c5b7625f4d5cc1e46b9daf3d378bd89d98b5eaeef8698089eddba7d7b424", "section_path": ["变更"], "commit_groups": [["4a0aab14d", "5186f7625", "52434ba73", "669138ebd", "b9f3d7a53", "bcd541897", "f09829017"]], "identity_text": "Avoid stack overflow in information_schema views when a self-referential view exists in the system catalogs (Tom Lane) A self-referential view can't work; it will always result in infinite recursion. We handled that situation correctly when trying to execute the view, but not when inquiring whether it is automatically updatable.", "commit_aliases": ["4a0aab14d", "5186f7625", "52434ba73", "669138ebd", "b9f3d7a53", "bcd541897", "f09829017"], "source_commits": ["52434ba73"], "source_entry_id": "9.6.17/changes/014", "db_id": "1b330957449f4b21da4a1725df3776af", "patch_ids": ["ee445a89d96850907b66829bdd2041c7"], "statement_hash": "d38af59ef3e029aa8eb8934c03824ef4b851b43bc0892f344b143600ae7807ce", "relations": [{"rule": 2, "type": "equivalent", "target": "4c60a3ca30b315e9f22ac913e2ce2d4b", "evidence": {"same_day": true, "patch_ids": ["ee445a89d96850907b66829bdd2041c7"], "statement_hash": "d38af59ef3e029aa8eb8934c03824ef4b851b43bc0892f344b143600ae7807ce"}}, {"rule": 2, "type": "equivalent", "target": "acf1d52fad98389a471114b8df0c0fdc", "evidence": {"same_day": true, "patch_ids": ["ee445a89d96850907b66829bdd2041c7"], "statement_hash": "d38af59ef3e029aa8eb8934c03824ef4b851b43bc0892f344b143600ae7807ce"}}, {"rule": 2, "type": "equivalent", "target": "b491675de114029fc48083e9392427fe", "evidence": {"same_day": true, "patch_ids": ["ee445a89d96850907b66829bdd2041c7"], "statement_hash": "d38af59ef3e029aa8eb8934c03824ef4b851b43bc0892f344b143600ae7807ce"}}, {"rule": 2, "type": "equivalent", "target": "b933e5d77c8aa2e81fd04399a0e55040", "evidence": {"same_day": true, "patch_ids": ["ee445a89d96850907b66829bdd2041c7"], "statement_hash": "d38af59ef3e029aa8eb8934c03824ef4b851b43bc0892f344b143600ae7807ce"}}, {"rule": 2, "type": "equivalent", "target": "e552e8dba5a3299576dfb60b582319bc", "evidence": {"same_day": true, "patch_ids": ["ee445a89d96850907b66829bdd2041c7"], "statement_hash": "d38af59ef3e029aa8eb8934c03824ef4b851b43bc0892f344b143600ae7807ce"}}], "version": "9.6.17", "category_label": "BUG 修复", "also_in": [], "variants": [], "related_changes": [{"db_id": "acf1d52fad98389a471114b8df0c0fdc", "kind": "equivalent", "version": "12.2", "label": "12.2", "title": "避免系统目录中存在自引用视图时 information_schema 视图发生栈溢出", "evidence": {"same_day": true, "patch_ids": ["ee445a89d96850907b66829bdd2041c7"], "statement_hash": "d38af59ef3e029aa8eb8934c03824ef4b851b43bc0892f344b143600ae7807ce"}, "url": "/docs/compare/?release=12.2#12.2-78335de878eb3d78", "source_url": "/docs/release/12.2/#id-1.11.6.26.5"}, {"db_id": "e552e8dba5a3299576dfb60b582319bc", "kind": "equivalent", "version": "11.7", "label": "11.7", "title": "避免系统目录中存在自引用视图时 information_schema 视图发生栈溢出", "evidence": {"same_day": true, "patch_ids": ["ee445a89d96850907b66829bdd2041c7"], "statement_hash": "d38af59ef3e029aa8eb8934c03824ef4b851b43bc0892f344b143600ae7807ce"}, "url": "/docs/compare/?release=11.7#11.7-a585e920494ebca6", "source_url": "/docs/release/11.7/#id-1.11.6.20.5"}, {"db_id": "b491675de114029fc48083e9392427fe", "kind": "equivalent", "version": "10.12", "label": "10.12", "title": "避免系统目录中存在自引用视图时 information_schema 视图发生栈溢出", "evidence": {"same_day": true, "patch_ids": ["ee445a89d96850907b66829bdd2041c7"], "statement_hash": "d38af59ef3e029aa8eb8934c03824ef4b851b43bc0892f344b143600ae7807ce"}, "url": "/docs/compare/?release=10.12#10.12-a585e920494ebca6", "source_url": "/docs/release/10.12/#id-1.11.6.16.5"}, {"db_id": "b933e5d77c8aa2e81fd04399a0e55040", "kind": "equivalent", "version": "9.5.21", "label": "9.5.21", "title": "避免系统目录中存在自引用视图时 information_schema 视图中的栈溢出", "evidence": {"same_day": true, "patch_ids": ["ee445a89d96850907b66829bdd2041c7"], "statement_hash": "d38af59ef3e029aa8eb8934c03824ef4b851b43bc0892f344b143600ae7807ce"}, "url": "/docs/compare/?release=9.5.21#9.5.21-1a4a5880e6239261", "source_url": "/docs/release/9.5.21/#id-1.11.6.9.5"}, {"db_id": "4c60a3ca30b315e9f22ac913e2ce2d4b", "kind": "equivalent", "version": "9.4.26", "label": "9.4.26", "title": "避免系统目录中存在自引用视图时 information_schema 视图中的栈溢出", "evidence": {"same_day": true, "patch_ids": ["ee445a89d96850907b66829bdd2041c7"], "statement_hash": "d38af59ef3e029aa8eb8934c03824ef4b851b43bc0892f344b143600ae7807ce"}, "url": "/docs/compare/?release=9.4.26#9.4.26-1a4a5880e6239261", "source_url": "/docs/release/9.4.26/#id-1.11.6.5.6"}]}, {"id": "9.6.17-ba72bdf7449915cf", "cves": [], "html": "改进有超大内侧关系的哈希连接的性能（Thomas Munro）
", "text": "改进有超大内侧关系的哈希连接的性能（Thomas Munro）", "title": "改进有超大内侧关系的哈希连接的性能", "commits": [], "section": "变更", "category": "performance", "source_url": "/docs/release/9.6.17/#id-1.11.6.12.5", "source_hash": "ea9c247303cf1e473b9f46057f918da380615d1a49456fcadda768eaa113d832", "section_path": ["变更"], "commit_groups": [["15861deb6", "5c0a132cf", "8052aaf52", "893eaf0be", "8e89bc6df", "9e551a14c", "e69d64454"]], "identity_text": "Improve performance of hash joins with very large inner relations (Thomas Munro)", "commit_aliases": ["15861deb6", "5c0a132cf", "8052aaf52", "893eaf0be", "8e89bc6df", "9e551a14c", "e69d64454"], "source_commits": ["15861deb6"], "source_entry_id": "9.6.17/changes/015", "db_id": "b3cb781746ac72afd92d36eb4d30e449", "patch_ids": ["4fd40ea9c8ea4eadf6c96b64d56d3642"], "statement_hash": "2df267ae22df679eccfb91c9e704ed41b727a5277b344abfcc0fa5ca790fe3bd", "relations": [{"rule": 2, "type": "equivalent", "target": "0895ef11a5e64d19ab1da8f1b5310d96", "evidence": {"same_day": true, "patch_ids": ["4fd40ea9c8ea4eadf6c96b64d56d3642"], "statement_hash": "2df267ae22df679eccfb91c9e704ed41b727a5277b344abfcc0fa5ca790fe3bd"}}, {"rule": 2, "type": "equivalent", "target": "116f6d8659176bcd964a41e0209aedea", "evidence": {"same_day": true, "patch_ids": ["4fd40ea9c8ea4eadf6c96b64d56d3642"], "statement_hash": "2df267ae22df679eccfb91c9e704ed41b727a5277b344abfcc0fa5ca790fe3bd"}}, {"rule": 2, "type": "equivalent", "target": "17ab53f94dcefd2c93fabf044fcac49e", "evidence": {"same_day": true, "patch_ids": ["4fd40ea9c8ea4eadf6c96b64d56d3642"], "statement_hash": "2df267ae22df679eccfb91c9e704ed41b727a5277b344abfcc0fa5ca790fe3bd"}}, {"rule": 2, "type": "equivalent", "target": "470ba833faa3f091a2c921a50dcf0786", "evidence": {"same_day": true, "patch_ids": ["4fd40ea9c8ea4eadf6c96b64d56d3642"], "statement_hash": "2df267ae22df679eccfb91c9e704ed41b727a5277b344abfcc0fa5ca790fe3bd"}}, {"rule": 2, "type": "equivalent", "target": "d2e309cdc378e915039257fd8823d0bf", "evidence": {"same_day": true, "patch_ids": ["4fd40ea9c8ea4eadf6c96b64d56d3642"], "statement_hash": "2df267ae22df679eccfb91c9e704ed41b727a5277b344abfcc0fa5ca790fe3bd"}}], "version": "9.6.17", "category_label": "性能改进", "also_in": [], "variants": [], "related_changes": [{"db_id": "17ab53f94dcefd2c93fabf044fcac49e", "kind": "equivalent", "version": "12.2", "label": "12.2", "title": "提高内侧关系非常大时的哈希连接性能", "evidence": {"same_day": true, "patch_ids": ["4fd40ea9c8ea4eadf6c96b64d56d3642"], "statement_hash": "2df267ae22df679eccfb91c9e704ed41b727a5277b344abfcc0fa5ca790fe3bd"}, "url": "/docs/compare/?release=12.2#12.2-fd4ec8b7ca5e3534", "source_url": "/docs/release/12.2/#id-1.11.6.26.5"}, {"db_id": "d2e309cdc378e915039257fd8823d0bf", "kind": "equivalent", "version": "11.7", "label": "11.7", "title": "提高内侧关系非常大时的哈希连接性能", "evidence": {"same_day": true, "patch_ids": ["4fd40ea9c8ea4eadf6c96b64d56d3642"], "statement_hash": "2df267ae22df679eccfb91c9e704ed41b727a5277b344abfcc0fa5ca790fe3bd"}, "url": "/docs/compare/?release=11.7#11.7-c524cf29609d73b0", "source_url": "/docs/release/11.7/#id-1.11.6.20.5"}, {"db_id": "116f6d8659176bcd964a41e0209aedea", "kind": "equivalent", "version": "10.12", "label": "10.12", "title": "提高内侧关系非常大时的哈希连接性能", "evidence": {"same_day": true, "patch_ids": ["4fd40ea9c8ea4eadf6c96b64d56d3642"], "statement_hash": "2df267ae22df679eccfb91c9e704ed41b727a5277b344abfcc0fa5ca790fe3bd"}, "url": "/docs/compare/?release=10.12#10.12-c524cf29609d73b0", "source_url": "/docs/release/10.12/#id-1.11.6.16.5"}, {"db_id": "470ba833faa3f091a2c921a50dcf0786", "kind": "equivalent", "version": "9.5.21", "label": "9.5.21", "title": "改进有超大内侧关系的哈希连接的性能", "evidence": {"same_day": true, "patch_ids": ["4fd40ea9c8ea4eadf6c96b64d56d3642"], "statement_hash": "2df267ae22df679eccfb91c9e704ed41b727a5277b344abfcc0fa5ca790fe3bd"}, "url": "/docs/compare/?release=9.5.21#9.5.21-ba72bdf7449915cf", "source_url": "/docs/release/9.5.21/#id-1.11.6.9.5"}, {"db_id": "0895ef11a5e64d19ab1da8f1b5310d96", "kind": "equivalent", "version": "9.4.26", "label": "9.4.26", "title": "改进有超大内侧关系的哈希连接的性能", "evidence": {"same_day": true, "patch_ids": ["4fd40ea9c8ea4eadf6c96b64d56d3642"], "statement_hash": "2df267ae22df679eccfb91c9e704ed41b727a5277b344abfcc0fa5ca790fe3bd"}, "url": "/docs/compare/?release=9.4.26#9.4.26-ba72bdf7449915cf", "source_url": "/docs/release/9.4.26/#id-1.11.6.5.6"}]}, {"id": "9.6.17-8b8cb30dd25eac7f", "cves": [], "html": "修复 <@ 和 @> 范围操作符选择率计算中的边界崩溃和估计错误（Michael Paquier、Andrey Borodin、Tom Lane）
改进对试图在带条件 INSTEAD 规则的视图上使用自动更新的错误报告（Dean Rasheed）
这从未被支持过，但此前错误只在执行时抛出，因此可能被规划器错误掩盖。
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把传入的 NOTIFY 消息在发送 ReadyForQuery 之前而不是之后传给客户端（Tom Lane）
这一更改确保在使用 libpq 及行为类似它的其他客户端库时，事务期间收到的任何通知在客户端认为事务完成之时都已可用。这在实际应用中可能没有差别（反正都需要应对异步通知）；但它使构建行为可重现的测试用例更容易。
", "text": "把传入的 NOTIFY 消息在发送 ReadyForQuery 之前而不是之后传给客户端（Tom Lane） 这一更改确保在使用 libpq 及行为类似它的其他客户端库时，事务期间收到的任何通知在客户端认为事务完成之时都已可用。这在实际应用中可能没有差别（反正都需要应对异步通知）；但它使构建行为可重现的测试用例更容易。", "title": "把传入的 NOTIFY 消息在发送 ReadyForQuery 之前而不是之后传给客户端", "commits": [], "section": "变更", "category": "improvement", "source_url": "/docs/release/9.6.17/#id-1.11.6.12.5", "source_hash": "53741ecbef9c45c8cca27f721f703a9cd58e483c8986fca31daa2903b96341d3", "section_path": ["变更"], "commit_groups": [["111298aa6", "377d1b95b", "790026972", "c47f498c9", "dbe15524b"]], "identity_text": "Transmit incoming NOTIFY messages to the client before sending ReadyForQuery, rather than after (Tom Lane) This change ensures that, with libpq and other client libraries that act similarly to it, any notifications received during a transaction will be available by the time the client thinks the transaction is complete. This probably makes no difference in practical applications (which would need to cope with asynchronous notifications in any case); but it makes it easier to build test cases with reproducible behavior.", "commit_aliases": ["111298aa6", "377d1b95b", "790026972", "c47f498c9", "dbe15524b"], "source_commits": ["111298aa6"], "source_entry_id": "9.6.17/changes/021", "db_id": "f7b4edeffd8f7e2bbd60da7e8191bcaf", "patch_ids": ["143ac7220b04444a8a549b7e07106f4c"], "statement_hash": "8312a6e591ff94226aa79fbd57a837b0f77fedcc878f005bd0cf9b138118552a", "relations": [{"rule": 2, "type": "equivalent", "target": "0d54b92cb025561e0cae46f0875d9f49", "evidence": {"same_day": true, "patch_ids": ["143ac7220b04444a8a549b7e07106f4c"], "statement_hash": "8312a6e591ff94226aa79fbd57a837b0f77fedcc878f005bd0cf9b138118552a"}}, {"rule": 2, "type": "equivalent", "target": "a39c1e72595c5bfe66bdafb5f1287cbf", "evidence": {"same_day": true, "patch_ids": ["143ac7220b04444a8a549b7e07106f4c"], "statement_hash": "8312a6e591ff94226aa79fbd57a837b0f77fedcc878f005bd0cf9b138118552a"}}, {"rule": 2, "type": "equivalent", "target": "c119abea7e9d42151b4f9b00b579082b", "evidence": {"same_day": true, "patch_ids": ["143ac7220b04444a8a549b7e07106f4c"], "statement_hash": "8312a6e591ff94226aa79fbd57a837b0f77fedcc878f005bd0cf9b138118552a"}}], "version": "9.6.17", "category_label": "其他改进", "also_in": [], "variants": [], "related_changes": [{"db_id": "a39c1e72595c5bfe66bdafb5f1287cbf", "kind": "equivalent", "version": "12.2", "label": "12.2", "title": "在发送 ReadyForQuery 之前向客户端传送收到的 NOTIFY 消息，而非在之后发送", "evidence": {"same_day": true, "patch_ids": ["143ac7220b04444a8a549b7e07106f4c"], "statement_hash": "8312a6e591ff94226aa79fbd57a837b0f77fedcc878f005bd0cf9b138118552a"}, "url": "/docs/compare/?release=12.2#12.2-889874eb8cc1b3e7", "source_url": "/docs/release/12.2/#id-1.11.6.26.5"}, {"db_id": "0d54b92cb025561e0cae46f0875d9f49", "kind": "equivalent", "version": "11.7", "label": "11.7", "title": "在发送 ReadyForQuery 之前向客户端传送收到的 NOTIFY 消息，而非在之后发送", "evidence": {"same_day": true, "patch_ids": ["143ac7220b04444a8a549b7e07106f4c"], "statement_hash": "8312a6e591ff94226aa79fbd57a837b0f77fedcc878f005bd0cf9b138118552a"}, "url": "/docs/compare/?release=11.7#11.7-8d456906e9cde243", "source_url": "/docs/release/11.7/#id-1.11.6.20.5"}, {"db_id": "c119abea7e9d42151b4f9b00b579082b", "kind": "equivalent", "version": "10.12", "label": "10.12", "title": "在发送 ReadyForQuery 之前向客户端传送收到的 NOTIFY 消息，而非在之后发送", "evidence": {"same_day": true, "patch_ids": ["143ac7220b04444a8a549b7e07106f4c"], "statement_hash": "8312a6e591ff94226aa79fbd57a837b0f77fedcc878f005bd0cf9b138118552a"}, "url": "/docs/compare/?release=10.12#10.12-8d456906e9cde243", "source_url": "/docs/release/10.12/#id-1.11.6.16.5"}]}, {"id": "9.6.17-1eba4957cff6dc49", "cves": [], "html": "允许 libpq 在未编译 GSSAPI 代码时也解析所有与 GSS 相关的连接参数（Tom Lane）
\n这使行为与我们的 SSL 支持相似——很久以前我们就认为始终接受所有相关参数是个好主意，即使在特定构建中因缺少该特性而忽略或限制某些参数。
", "text": "允许 libpq 在未编译 GSSAPI 代码时也解析所有与 GSS 相关的连接参数（Tom Lane） 这使行为与我们的 SSL 支持相似——很久以前我们就认为始终接受所有相关参数是个好主意，即使在特定构建中因缺少该特性而忽略或限制某些参数。", "title": "允许 libpq 在未编译 GSSAPI 代码时也解析所有与 GSS 相关的连接参数", "commits": [], "section": "变更", "category": "improvement", "source_url": "/docs/release/9.6.17/#id-1.11.6.12.5", "source_hash": "6bb4a12738abdd750816a2c4baebcd5ca131dcbd4bc10b862310251e5731286d", "section_path": ["变更"], "commit_groups": [["1a77ea02d", "5e22a1111", "875c7d70d", "c11bd6c10", "d09cfa3e2", "e60b480d3", "e8f60e6fe"]], "identity_text": "Allow libpq to parse all GSS-related connection parameters even when the GSSAPI code hasn't been compiled in (Tom Lane) This makes the behavior similar to our SSL support, where it was long ago deemed to be a good idea to always accept all the related parameters, even if some are ignored or restricted due to lack of the feature in a particular build.", "commit_aliases": ["1a77ea02d", "5e22a1111", "875c7d70d", "c11bd6c10", "d09cfa3e2", "e60b480d3", "e8f60e6fe"], "source_commits": ["c11bd6c10"], "source_entry_id": "9.6.17/changes/022", "db_id": "403244521d4fdb482380e481cc2ced93", "patch_ids": ["545032ece7d355adeec65ef480fad60d"], "statement_hash": "1206a1ac182d983384194ddf901975451c4f893e2c798f2df70cc5614c46e763", "relations": [{"rule": 2, "type": "equivalent", "target": "1bb2f6337ba2898734544030a669e49d", "evidence": {"same_day": true, "patch_ids": ["545032ece7d355adeec65ef480fad60d"], "statement_hash": "1206a1ac182d983384194ddf901975451c4f893e2c798f2df70cc5614c46e763"}}, {"rule": 2, "type": "equivalent", "target": "2d073031d898b2ce379669b11bf00500", "evidence": {"same_day": true, "patch_ids": ["545032ece7d355adeec65ef480fad60d"], "statement_hash": "1206a1ac182d983384194ddf901975451c4f893e2c798f2df70cc5614c46e763"}}, {"rule": 2, "type": "equivalent", "target": "484d7d42670f34504842f8b64f8610bc", "evidence": {"same_day": true, "patch_ids": ["545032ece7d355adeec65ef480fad60d"], "statement_hash": "1206a1ac182d983384194ddf901975451c4f893e2c798f2df70cc5614c46e763"}}, {"rule": 2, "type": "equivalent", "target": "784fb8e33c762755c78c61d3c0255575", "evidence": {"same_day": true, "patch_ids": ["545032ece7d355adeec65ef480fad60d"], "statement_hash": "1206a1ac182d983384194ddf901975451c4f893e2c798f2df70cc5614c46e763"}}, {"rule": 2, "type": "equivalent", "target": "b722089a0263aa3d6c363961a1789ede", "evidence": {"same_day": true, "patch_ids": ["545032ece7d355adeec65ef480fad60d"], "statement_hash": "1206a1ac182d983384194ddf901975451c4f893e2c798f2df70cc5614c46e763"}}], "version": "9.6.17", "category_label": "其他改进", "also_in": [], "variants": [], "related_changes": [{"db_id": "b722089a0263aa3d6c363961a1789ede", "kind": "equivalent", "version": "12.2", "label": "12.2", "title": "即使未编译 GSSAPI 代码，也允许 libpq 解析所有与 GSS 有关的连接参数", "evidence": {"same_day": true, "patch_ids": ["545032ece7d355adeec65ef480fad60d"], "statement_hash": "1206a1ac182d983384194ddf901975451c4f893e2c798f2df70cc5614c46e763"}, "url": "/docs/compare/?release=12.2#12.2-fe8985d3df13efcf", "source_url": "/docs/release/12.2/#id-1.11.6.26.5"}, {"db_id": "1bb2f6337ba2898734544030a669e49d", "kind": "equivalent", "version": "11.7", "label": "11.7", "title": "即使未编译 GSSAPI 代码，也允许 libpq 解析所有与 GSS 有关的连接参数", "evidence": {"same_day": true, "patch_ids": ["545032ece7d355adeec65ef480fad60d"], "statement_hash": "1206a1ac182d983384194ddf901975451c4f893e2c798f2df70cc5614c46e763"}, "url": "/docs/compare/?release=11.7#11.7-a18dd44ba61d6ab0", "source_url": "/docs/release/11.7/#id-1.11.6.20.5"}, {"db_id": "784fb8e33c762755c78c61d3c0255575", "kind": "equivalent", "version": "10.12", "label": "10.12", "title": "即使未编译 GSSAPI 代码，也允许 libpq 解析所有与 GSS 有关的连接参数", "evidence": {"same_day": true, "patch_ids": ["545032ece7d355adeec65ef480fad60d"], "statement_hash": "1206a1ac182d983384194ddf901975451c4f893e2c798f2df70cc5614c46e763"}, "url": "/docs/compare/?release=10.12#10.12-a18dd44ba61d6ab0", "source_url": "/docs/release/10.12/#id-1.11.6.16.5"}, {"db_id": "2d073031d898b2ce379669b11bf00500", "kind": "equivalent", "version": "9.5.21", "label": "9.5.21", "title": "允许 libpq 在未编译 GSSAPI 代码时也解析所有与 GSS 相关的连接参数", "evidence": {"same_day": true, "patch_ids": ["545032ece7d355adeec65ef480fad60d"], "statement_hash": "1206a1ac182d983384194ddf901975451c4f893e2c798f2df70cc5614c46e763"}, "url": "/docs/compare/?release=9.5.21#9.5.21-1eba4957cff6dc49", "source_url": "/docs/release/9.5.21/#id-1.11.6.9.5"}, {"db_id": "484d7d42670f34504842f8b64f8610bc", "kind": "equivalent", "version": "9.4.26", "label": "9.4.26", "title": "允许 libpq 在未编译 GSSAPI 代码时也解析所有与 GSS 相关的连接参数", "evidence": {"same_day": true, "patch_ids": ["545032ece7d355adeec65ef480fad60d"], "statement_hash": "1206a1ac182d983384194ddf901975451c4f893e2c798f2df70cc5614c46e763"}, "url": "/docs/compare/?release=9.4.26#9.4.26-1eba4957cff6dc49", "source_url": "/docs/release/9.4.26/#id-1.11.6.5.6"}]}, {"id": "9.6.17-0c629553afdfef1a", "cves": [], "html": "修复 ecpg 的 PGTYPEStimestamp_fmt_asc() 函数中 %b 和 %B 格式代码的错误处理（Tomas Vondra）
由于差一错误，这些代码会打印错误的月份名称，或者可能崩溃。
", "text": "修复 ecpg 的 PGTYPEStimestamp_fmt_asc() 函数中 %b 和 %B 格式代码的错误处理（Tomas Vondra） 由于差一错误，这些代码会打印错误的月份名称，或者可能崩溃。", "title": "修复 ecpg 的 PGTYPEStimestamp_fmt_asc() 函数中 %b 和 %B 格式代码的错误处理", "commits": [], "section": "变更", "category": "bugfix", "source_url": "/docs/release/9.6.17/#id-1.11.6.12.5", "source_hash": "cb73abd0179aff744368d094303667835d295d77290fd6eeab3f343c6f3389fd", "section_path": ["变更"], "commit_groups": [["0dafed6fe", "3ff660bbe", "9668bf5d5", "a17602de1", "c59414da7", "d9b974e99", "f71b22f53"]], "identity_text": "Fix incorrect handling of %b and %B format codes in ecpg's PGTYPEStimestamp_fmt_asc() function (Tomas Vondra) Due to an off-by-one error, these codes would print the wrong month name, or possibly crash.", "commit_aliases": ["0dafed6fe", "3ff660bbe", "9668bf5d5", "a17602de1", "c59414da7", "d9b974e99", "f71b22f53"], "source_commits": ["c59414da7"], "source_entry_id": "9.6.17/changes/023", "db_id": "ccd200283e6eaabea774bf29b3a5c9b0", "patch_ids": ["98ce3485e7421c58dabcd04707a8b4dc"], "statement_hash": "55f40e67e7ff67ce051d1e229c5b9805045fa9e0750b98da37f72bd574814bf6", "relations": [{"rule": 2, "type": "equivalent", "target": "07c9c08c3f6d8a9d7bb489a91bc7bfad", "evidence": {"same_day": true, "patch_ids": ["98ce3485e7421c58dabcd04707a8b4dc"], "statement_hash": "55f40e67e7ff67ce051d1e229c5b9805045fa9e0750b98da37f72bd574814bf6"}}, {"rule": 2, "type": "equivalent", "target": "4c483fea559a83716ed5879fc5f8ebc4", "evidence": {"same_day": true, "patch_ids": ["98ce3485e7421c58dabcd04707a8b4dc"], "statement_hash": "55f40e67e7ff67ce051d1e229c5b9805045fa9e0750b98da37f72bd574814bf6"}}, {"rule": 2, "type": "equivalent", "target": "7fc768077bbbaba7bb2800f2d9790945", "evidence": {"same_day": true, "patch_ids": ["98ce3485e7421c58dabcd04707a8b4dc"], "statement_hash": "55f40e67e7ff67ce051d1e229c5b9805045fa9e0750b98da37f72bd574814bf6"}}, {"rule": 2, "type": "equivalent", "target": "a18b89f65dd1e0d20dfd4b9c304a3ed2", "evidence": {"same_day": true, "patch_ids": ["98ce3485e7421c58dabcd04707a8b4dc"], "statement_hash": "55f40e67e7ff67ce051d1e229c5b9805045fa9e0750b98da37f72bd574814bf6"}}, {"rule": 2, "type": "equivalent", "target": "f7eb19a202cef3c275a0ac6028d63ec8", "evidence": {"same_day": true, "patch_ids": ["98ce3485e7421c58dabcd04707a8b4dc"], "statement_hash": "55f40e67e7ff67ce051d1e229c5b9805045fa9e0750b98da37f72bd574814bf6"}}], "version": "9.6.17", "category_label": "BUG 修复", "also_in": [], "variants": [], "related_changes": [{"db_id": "7fc768077bbbaba7bb2800f2d9790945", "kind": "equivalent", "version": "12.2", "label": "12.2", "title": "修复 ecpg 的 PGTYPEStimestamp_fmt_asc() 函数对格式代码 %b 和 %B 的不正确处理", "evidence": {"same_day": true, "patch_ids": ["98ce3485e7421c58dabcd04707a8b4dc"], "statement_hash": "55f40e67e7ff67ce051d1e229c5b9805045fa9e0750b98da37f72bd574814bf6"}, "url": "/docs/compare/?release=12.2#12.2-1e9b09723b65ec71", "source_url": "/docs/release/12.2/#id-1.11.6.26.5"}, {"db_id": "4c483fea559a83716ed5879fc5f8ebc4", "kind": "equivalent", "version": "11.7", "label": "11.7", "title": "修复 ecpg 的 PGTYPEStimestamp_fmt_asc() 函数对格式代码 %b 和 %B 的不正确处理", "evidence": {"same_day": true, "patch_ids": ["98ce3485e7421c58dabcd04707a8b4dc"], "statement_hash": "55f40e67e7ff67ce051d1e229c5b9805045fa9e0750b98da37f72bd574814bf6"}, "url": "/docs/compare/?release=11.7#11.7-fec0d969ab1ed0c5", "source_url": "/docs/release/11.7/#id-1.11.6.20.5"}, {"db_id": "f7eb19a202cef3c275a0ac6028d63ec8", "kind": "equivalent", "version": "10.12", "label": "10.12", "title": "修复 ecpg 的 PGTYPEStimestamp_fmt_asc() 函数对格式代码 %b 和 %B 的不正确处理", "evidence": {"same_day": true, "patch_ids": ["98ce3485e7421c58dabcd04707a8b4dc"], "statement_hash": "55f40e67e7ff67ce051d1e229c5b9805045fa9e0750b98da37f72bd574814bf6"}, "url": "/docs/compare/?release=10.12#10.12-fec0d969ab1ed0c5", "source_url": "/docs/release/10.12/#id-1.11.6.16.5"}, {"db_id": "a18b89f65dd1e0d20dfd4b9c304a3ed2", "kind": "equivalent", "version": "9.5.21", "label": "9.5.21", "title": "修复 ecpg 的 PGTYPEStimestamp_fmt_asc() 函数中 %b 和 %B 格式代码的错误处理", "evidence": {"same_day": true, "patch_ids": ["98ce3485e7421c58dabcd04707a8b4dc"], "statement_hash": "55f40e67e7ff67ce051d1e229c5b9805045fa9e0750b98da37f72bd574814bf6"}, "url": "/docs/compare/?release=9.5.21#9.5.21-0c629553afdfef1a", "source_url": "/docs/release/9.5.21/#id-1.11.6.9.5"}, {"db_id": "07c9c08c3f6d8a9d7bb489a91bc7bfad", "kind": "equivalent", "version": "9.4.26", "label": "9.4.26", "title": "修复 ecpg 的 PGTYPEStimestamp_fmt_asc() 函数中 %b 和 %B 格式代码的错误处理", "evidence": {"same_day": true, "patch_ids": ["98ce3485e7421c58dabcd04707a8b4dc"], "statement_hash": "55f40e67e7ff67ce051d1e229c5b9805045fa9e0750b98da37f72bd574814bf6"}, "url": "/docs/compare/?release=9.4.26#9.4.26-0c629553afdfef1a", "source_url": "/docs/release/9.4.26/#id-1.11.6.5.6"}]}, {"id": "9.6.17-dcdce388ce7b0731", "cves": [], "html": "修复并行 pg_dump/pg_restore 更优雅地处理工作者进程创建失败（Tom Lane）
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避免 postgres_fdw 尝试向远程服务器发送诸如 UPDATE remote_tab SET (x,y) = (SELECT ...) 之类的命令时崩溃（Tom Lane）
在 contrib/dict_int 中，拒绝小于一的 maxlen 设置（Tomas Vondra）
这防止了该参数的愚蠢设置可能导致的崩溃。
", "text": "在 contrib/dict_int 中，拒绝小于一的 maxlen 设置（Tomas Vondra） 这防止了该参数的愚蠢设置可能导致的崩溃。", "title": "在 contrib/dict_int 中，拒绝小于一的 maxlen 设置", "commits": [], "section": "变更", "category": "improvement", "source_url": "/docs/release/9.6.17/#id-1.11.6.12.5", "source_hash": "3adc0776daf9fa8018174f6f048b202a5d4a675bb49458ccba5f578bd5e619a0", "section_path": ["变更"], "commit_groups": [["267eb954c", "44381b1af", "46ce37b67", "a2fdeb786", "a8a8c6b29", "b52739436", "fabdad822"]], "identity_text": "In contrib/dict_int, reject maxlen settings less than one (Tomas Vondra) This prevents a possible crash with silly settings for that parameter.", "commit_aliases": ["267eb954c", "44381b1af", "46ce37b67", "a2fdeb786", "a8a8c6b29", "b52739436", "fabdad822"], "source_commits": ["fabdad822"], "source_entry_id": "9.6.17/changes/029", "db_id": "c5e06cb8326bc8a725a74efea95e71ec", "patch_ids": ["78950363d28b5b851c829de00fe014dd"], "statement_hash": "d3ed30d197b4f05dcc2cc52d1553b7542cc1246fc43ff2c7d37678facadf864b", "relations": [{"rule": 2, "type": "equivalent", "target": "58302165faa498ba63d2b7016ca2c1f1", "evidence": {"same_day": true, "patch_ids": ["78950363d28b5b851c829de00fe014dd"], "statement_hash": "d3ed30d197b4f05dcc2cc52d1553b7542cc1246fc43ff2c7d37678facadf864b"}}, {"rule": 2, "type": "equivalent", "target": "96dd0d425154ac899e6e4b526f92e194", "evidence": {"same_day": true, "patch_ids": ["78950363d28b5b851c829de00fe014dd"], "statement_hash": "d3ed30d197b4f05dcc2cc52d1553b7542cc1246fc43ff2c7d37678facadf864b"}}, {"rule": 2, "type": "equivalent", "target": "a8e549afa20e818e690acee052bb0448", "evidence": {"same_day": true, "patch_ids": ["78950363d28b5b851c829de00fe014dd"], "statement_hash": "d3ed30d197b4f05dcc2cc52d1553b7542cc1246fc43ff2c7d37678facadf864b"}}, {"rule": 2, "type": "equivalent", "target": "bf83de008875737dca0e646e1d486e02", "evidence": {"same_day": true, "patch_ids": ["78950363d28b5b851c829de00fe014dd"], "statement_hash": "d3ed30d197b4f05dcc2cc52d1553b7542cc1246fc43ff2c7d37678facadf864b"}}, {"rule": 2, "type": "equivalent", "target": "ed1985f91bf6854da58a13ad7b975fa2", "evidence": {"same_day": true, "patch_ids": ["78950363d28b5b851c829de00fe014dd"], "statement_hash": "d3ed30d197b4f05dcc2cc52d1553b7542cc1246fc43ff2c7d37678facadf864b"}}], "version": "9.6.17", "category_label": "其他改进", "also_in": [], "variants": [], "related_changes": [{"db_id": "ed1985f91bf6854da58a13ad7b975fa2", "kind": "equivalent", "version": "12.2", "label": "12.2", "title": "在 contrib/dict_int 中，拒绝小于一的 maxlen 设置", "evidence": {"same_day": true, "patch_ids": ["78950363d28b5b851c829de00fe014dd"], "statement_hash": "d3ed30d197b4f05dcc2cc52d1553b7542cc1246fc43ff2c7d37678facadf864b"}, "url": "/docs/compare/?release=12.2#12.2-7cdd017124b2400a", "source_url": "/docs/release/12.2/#id-1.11.6.26.5"}, {"db_id": "58302165faa498ba63d2b7016ca2c1f1", "kind": "equivalent", "version": "11.7", "label": "11.7", "title": "在 contrib/dict_int 中，拒绝小于一的 maxlen 设置", "evidence": {"same_day": true, "patch_ids": ["78950363d28b5b851c829de00fe014dd"], "statement_hash": "d3ed30d197b4f05dcc2cc52d1553b7542cc1246fc43ff2c7d37678facadf864b"}, "url": "/docs/compare/?release=11.7#11.7-a7dcf58cc8a56710", "source_url": "/docs/release/11.7/#id-1.11.6.20.5"}, {"db_id": "bf83de008875737dca0e646e1d486e02", "kind": "equivalent", "version": "10.12", "label": "10.12", "title": "在 contrib/dict_int 中，拒绝小于一的 maxlen 设置", "evidence": {"same_day": true, "patch_ids": ["78950363d28b5b851c829de00fe014dd"], "statement_hash": "d3ed30d197b4f05dcc2cc52d1553b7542cc1246fc43ff2c7d37678facadf864b"}, "url": "/docs/compare/?release=10.12#10.12-a7dcf58cc8a56710", "source_url": "/docs/release/10.12/#id-1.11.6.16.5"}, {"db_id": "96dd0d425154ac899e6e4b526f92e194", "kind": "equivalent", "version": "9.5.21", "label": "9.5.21", "title": "在 contrib/dict_int 中，拒绝小于一的 maxlen 设置", "evidence": {"same_day": true, "patch_ids": ["78950363d28b5b851c829de00fe014dd"], "statement_hash": "d3ed30d197b4f05dcc2cc52d1553b7542cc1246fc43ff2c7d37678facadf864b"}, "url": "/docs/compare/?release=9.5.21#9.5.21-a7dcf58cc8a56710", "source_url": "/docs/release/9.5.21/#id-1.11.6.9.5"}, {"db_id": "a8e549afa20e818e690acee052bb0448", "kind": "equivalent", "version": "9.4.26", "label": "9.4.26", "title": "在 contrib/dict_int 中，拒绝小于一的 maxlen 设置", "evidence": {"same_day": true, "patch_ids": ["78950363d28b5b851c829de00fe014dd"], "statement_hash": "d3ed30d197b4f05dcc2cc52d1553b7542cc1246fc43ff2c7d37678facadf864b"}, "url": "/docs/compare/?release=9.4.26#9.4.26-a7dcf58cc8a56710", "source_url": "/docs/release/9.4.26/#id-1.11.6.5.6"}]}, {"id": "9.6.17-765b25a9800cd9d2", "cves": [], "html": "禁止 contrib/tablefunc 的 crosstab() 函数中的 NULL 类别值（Joe Conway）
这种情况从来就不能正常工作，而且在某些平台上会崩溃。
", "text": "禁止 contrib/tablefunc 的 crosstab() 函数中的 NULL 类别值（Joe Conway） 这种情况从来就不能正常工作，而且在某些平台上会崩溃。", "title": "禁止 contrib/tablefunc 的 crosstab() 函数中的 NULL 类别值", "commits": [], "section": "变更", "category": "improvement", "source_url": "/docs/release/9.6.17/#id-1.11.6.12.5", "source_hash": "2f2dbc7486f1dbc6a2455690eb9820298baef953d4326e31d0b555c6c121ed90", "section_path": ["变更"], "commit_groups": [["3757c1640", "4a3cdb531", "70fc6c4ef", "81be0c57e", "b5e7569dd", "d5b9c2baf", "f49e5efbc"]], "identity_text": "Disallow NULL category values in contrib/tablefunc's crosstab() function (Joe Conway) This case never worked usefully, and it would crash on some platforms.", "commit_aliases": ["3757c1640", "4a3cdb531", "70fc6c4ef", "81be0c57e", "b5e7569dd", "d5b9c2baf", "f49e5efbc"], "source_commits": ["3757c1640"], "source_entry_id": "9.6.17/changes/030", "db_id": "0c98a8da40ed6ad88d98ca9f21729dfc", "patch_ids": ["f2a9c1eb425c6456d03f47fabd3d3e7e"], "statement_hash": "0bde96774dd728bfb5560fb48ede623d28e36ff4adc4a371bf0dd6f6456a87fe", "relations": [{"rule": 2, "type": "equivalent", "target": "09f5d81b24b38998d7a990a50ac72fc3", "evidence": {"same_day": true, "patch_ids": ["f2a9c1eb425c6456d03f47fabd3d3e7e"], "statement_hash": "0bde96774dd728bfb5560fb48ede623d28e36ff4adc4a371bf0dd6f6456a87fe"}}, {"rule": 2, "type": "equivalent", "target": "0b8ef0b2e246e06e7f1a9fc3eaf980ff", "evidence": {"same_day": true, "patch_ids": ["f2a9c1eb425c6456d03f47fabd3d3e7e"], "statement_hash": "0bde96774dd728bfb5560fb48ede623d28e36ff4adc4a371bf0dd6f6456a87fe"}}, {"rule": 2, "type": "equivalent", "target": "23016bbb0168f2db4667294c322483f7", "evidence": {"same_day": true, "patch_ids": ["f2a9c1eb425c6456d03f47fabd3d3e7e"], "statement_hash": "0bde96774dd728bfb5560fb48ede623d28e36ff4adc4a371bf0dd6f6456a87fe"}}, {"rule": 2, "type": "equivalent", "target": "b22fe0463a8bcce1b8fec6a9c289d8b5", "evidence": {"same_day": true, "patch_ids": ["f2a9c1eb425c6456d03f47fabd3d3e7e"], "statement_hash": "0bde96774dd728bfb5560fb48ede623d28e36ff4adc4a371bf0dd6f6456a87fe"}}, {"rule": 2, "type": "equivalent", "target": "f83454331b5ef1e28904b1610d5ddd72", "evidence": {"same_day": true, "patch_ids": ["f2a9c1eb425c6456d03f47fabd3d3e7e"], "statement_hash": "0bde96774dd728bfb5560fb48ede623d28e36ff4adc4a371bf0dd6f6456a87fe"}}], "version": "9.6.17", "category_label": "其他改进", "also_in": [], "variants": [], "related_changes": [{"db_id": "23016bbb0168f2db4667294c322483f7", "kind": "equivalent", "version": "12.2", "label": "12.2", "title": "在 contrib/tablefunc 的 crosstab() 函数中禁止 NULL 类别值", "evidence": {"same_day": true, "patch_ids": ["f2a9c1eb425c6456d03f47fabd3d3e7e"], "statement_hash": "0bde96774dd728bfb5560fb48ede623d28e36ff4adc4a371bf0dd6f6456a87fe"}, "url": "/docs/compare/?release=12.2#12.2-1cc3d7186ea0c38f", "source_url": "/docs/release/12.2/#id-1.11.6.26.5"}, {"db_id": "b22fe0463a8bcce1b8fec6a9c289d8b5", "kind": "equivalent", "version": "11.7", "label": "11.7", "title": "在 contrib/tablefunc 的 crosstab() 函数中禁止 NULL 类别值", "evidence": {"same_day": true, "patch_ids": ["f2a9c1eb425c6456d03f47fabd3d3e7e"], "statement_hash": "0bde96774dd728bfb5560fb48ede623d28e36ff4adc4a371bf0dd6f6456a87fe"}, "url": "/docs/compare/?release=11.7#11.7-24a922487b468ce3", "source_url": "/docs/release/11.7/#id-1.11.6.20.5"}, {"db_id": "f83454331b5ef1e28904b1610d5ddd72", "kind": "equivalent", "version": "10.12", "label": "10.12", "title": "在 contrib/tablefunc 的 crosstab() 函数中禁止 NULL 类别值", "evidence": {"same_day": true, "patch_ids": ["f2a9c1eb425c6456d03f47fabd3d3e7e"], "statement_hash": "0bde96774dd728bfb5560fb48ede623d28e36ff4adc4a371bf0dd6f6456a87fe"}, "url": "/docs/compare/?release=10.12#10.12-24a922487b468ce3", "source_url": "/docs/release/10.12/#id-1.11.6.16.5"}, {"db_id": "09f5d81b24b38998d7a990a50ac72fc3", "kind": "equivalent", "version": "9.5.21", "label": "9.5.21", "title": "禁止 contrib/tablefunc 的 crosstab() 函数中的 NULL 类别值", "evidence": {"same_day": true, "patch_ids": ["f2a9c1eb425c6456d03f47fabd3d3e7e"], "statement_hash": "0bde96774dd728bfb5560fb48ede623d28e36ff4adc4a371bf0dd6f6456a87fe"}, "url": "/docs/compare/?release=9.5.21#9.5.21-765b25a9800cd9d2", "source_url": "/docs/release/9.5.21/#id-1.11.6.9.5"}, {"db_id": "0b8ef0b2e246e06e7f1a9fc3eaf980ff", "kind": "equivalent", "version": "9.4.26", "label": "9.4.26", "title": "禁止 contrib/tablefunc 的 crosstab() 函数中的 NULL 类别值", "evidence": {"same_day": true, "patch_ids": ["f2a9c1eb425c6456d03f47fabd3d3e7e"], "statement_hash": "0bde96774dd728bfb5560fb48ede623d28e36ff4adc4a371bf0dd6f6456a87fe"}, "url": "/docs/compare/?release=9.4.26#9.4.26-765b25a9800cd9d2", "source_url": "/docs/release/9.4.26/#id-1.11.6.5.6"}]}, {"id": "9.6.17-6abd3d3d31b0412d", "cves": [], "html": "把一些超时和统计追踪 GUC 变量标记为 PGDLLIMPORT，以允许扩展在 Windows 上访问它们（Pascal Legrand）
这适用于 idle_in_transaction_session_timeout、lock_timeout、statement_timeout、track_activities、track_counts 和 track_functions。
修复导致 Windows 上进程间信号延迟传递的竞态条件（Amit Kapila）
\n这导致 NOTIFY 中可见的时机异常，或许还有其他错误行为。
在 Windows 上，ERROR_ACCESS_DENIED 文件访问失败后重试几次（Alexander Lakhin、Tom Lane）
这有助于应对目标文件已被标记为删除但尚未真正消失而导致打开失败的情况。例如，pg_ctl 在探测 postmaster 是否已关闭时经常因这种错误而失败。
", "text": "在 Windows 上，ERROR_ACCESS_DENIED 文件访问失败后重试几次（Alexander Lakhin、Tom Lane） 这有助于应对目标文件已被标记为删除但尚未真正消失而导致打开失败的情况。例如，pg_ctl 在探测 postmaster 是否已关闭时经常因这种错误而失败。", "title": "在 Windows 上，ERROR_ACCESS_DENIED 文件访问失败后重试几次", "commits": [], "section": "变更", "category": "improvement", "source_url": "/docs/release/9.6.17/#id-1.11.6.12.5", "source_hash": "a6ca48ebb47ed5e5f6b9f28158bacd166e163792bad79d611b1313312a937fb6", "section_path": ["变更"], "commit_groups": [["2cf51809b", "65cb25e4f", "6d7547c21", "81b052c31", "95f43fee9", "cd0380351", "cfb2a4cce"], ["35b28d983", "5406513e9", "739201b0e", "90281a3a2", "a69f5697a", "b3c4e2418", "f1a4020ef"]], "identity_text": "On Windows, retry a few times after an ERROR_ACCESS_DENIED file access failure (Alexander Lakhin, Tom Lane) This helps cope with cases where a file open attempt fails because the targeted file is flagged for deletion but not yet actually gone. pg_ctl, for example, frequently failed with such an error when probing to see if the 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"CVE-2020-1720", "url": "https://www.postgresql.org/support/security/CVE-2020-1720/", "fixed": {"10": "10.12", "11": "11.7", "12": "12.2", "9.6": "9.6.17"}, "score": 3.1, "title": "为 ALTER ... DEPENDS ON EXTENSION 补上缺失的权限检查", "vector": "AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:L/A:N", "affected": {"10": "10", "11": "11", "12": "12", "9.6": "9.6"}, "component": "core server", "published": {"10": "2020-02-13", "11": "2020-02-13", "12": "2020-02-13", "9.6": "2020-02-13"}, "introduced": {}, "cvss_version": "3.0", "description_en": "The ALTER ... DEPENDS ON EXTENSION sub-commands do not perform authorization checks, which can allow an unprivileged user to drop any function, procedure, materialized view, index, or trigger under certain conditions. This attack is possible if an administrator has installed an extension and an unprivileged user can CREATE , or an extension owner either executes DROP EXTENSION predictably or can be convinced to execute DROP EXTENSION .\n\nThe PostgreSQL project thanks Tom Lane for reporting this problem.", "first_published": "2020-02-13", "fixed_version": "9.6.17"}], "cve_available": true, "remaining_cves": [], "security_regressions": [], "warnings": [], "candidate_count": 33, "already_in_source_count": 0, "duplicate_count": 0, "excluded_count": 0, "exclusions": [], "source_as_of": "2026-09-26", "security_as_of": "2026-09-26"}