PostgreSQL 9.4.1/9.3.6/9.2.10/9.1.15/9.0.19 发布
3月21日 深圳 OSC 源创会开始报名罗，送华为海思开发板PostgreSQL 9.4.1/9.3.6/9.2.10/9.1.15/9.0.19 发布，这些版本现已提供下载。这些版本主要是之前版本的安全修复和 bug 修复。强烈建议所有用户尽快升级到最新版本！
安全修复
[*] CVE-2015-0241 Buffer overruns in "to_char" functions.
[*] CVE-2015-0242 Buffer overrun in replacement printf family of functions.
[*] CVE-2015-0243 Memory errors in functions in the pgcrypto extension.
[*] CVE-2015-0244 An error in extended protocol message reading.
[*] CVE-2014-8161 Constraint violation errors can cause display of values in columns which the user would not normally have rights to see.
JSON 和 JSONB Unicode 转义字符
为了解决 PostgreSQL 9.4.0 的 JSON 和 JSONB 转义字符不兼容的问题，现在 JSONB 不能出现转义字符序列 "\u0000"，JSON 类型只能在文本中有 "\u0000"，并且是非转义格式。
其他修复和改进
除了以上的改进，还包括超过 60 个 bug 修复：
[*] Cope with the non-ASCII Norwegian Windows locale name.
[*] Avoid data corruption when databases are moved to new tablespaces and back again.
[*]
Ensure that UNLOGGED tables are correctly copied during>
[*] Avoid deadlocks when locking recently modified rows.
[*] Fix two SELECT FOR UPDATE query issues.
[*] Prevent false negative for shortest-first regular expression matches.
[*] Fix false positives and negatives in tsquery contains operator.
[*] Fix namespace handling in xpath().
[*] Prevent row-producing functions from creating empty column names.
[*] Make autovacuum use per-table cost_limit and cost_delay settings.
[*] When autovacuum=off, limit autovacuum work to wraparound prevention only.
[*] Multiple fixes for logical decoding in 9.4.
[*] Fix transient errors on hot standby queries due to page replacement.
[*] Prevent duplicate WAL file archiving at end of recovery or standby promotion.
[*] Prevent deadlock in parallel restore of schema-only dump.
同时还改进了 PostgreSQL 的时间域文件。更多改进内容请看更新日志。
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