PostgreSQL 9.6 ← 9.5
SYSTEM VIEW · 系统视图
pg_timezone_names
The view pg_timezone_names provides a list of time zone names that are recognized by SET TIMEZONE, along with their associated abbreviations, UTC offsets, and daylight-savings status. (Technically, PostgreSQL does not use UTC because leap seconds are not handled.) Unlike the abbreviations shown in pg_timezone_abbrevs, many of these names imply a set of daylight-savings transition date rules. Therefore, the associated information changes across local DST boundaries. The displayed information is computed based on the current value of CURRENT_TIMESTAMP.
已与 PostgreSQL 18.6 实例逐字段核对 · 原始实测记录 ↗
字段结构 PostgreSQL 18
pg_timezone_names| 字段 / COLUMN | 类型 / TYPE | 说明 / DESCRIPTION |
|---|---|---|
name |
text |
Time zone name |
abbrev |
text |
Time zone abbreviation |
utc_offset |
interval |
Offset from UTC (positive means east of Greenwich) |
is_dst |
boolean文档原写法:bool |
True if currently observing daylight savings |
标记“隐式列”的字段不包含在 SELECT * 中;部分早期统计视图由同版本源码补全,额外来源会显示在字段说明中。
通用系统列 0
PostgreSQL 提供的系统属性,通常不在 SELECT * 中展开。单独保留,不与普通字段混算。
| 字段 | 类型 | attnum |
|---|
字段演化矩阵
悬停查看字段类型9.0 是收录基线;基线中已存在的字段不标记为新增。矩阵按字段名称对齐,重命名显示为旧字段移除与新字段新增。
演化时间线
相邻大版本的变化PostgreSQL 9.1 ← 9.0
比较任意两个版本
选择两个版本,查看字段的新增、移除与类型变化。交互比较需要 JavaScript;演化时间线可直接阅读。