pagevis

使用ASCII字符可视化数据库物理页面布局

概览

扩展包名	版本	分类	许可证	语言
`pagevis`	`0.1`	STAT	MIT	SQL

ID	扩展名	Bin	Lib	Load	Create	Trust	Reloc	模式
6860	`pagevis`	否	否	否	是	否	是	-

相关扩展	`pg_buffercache` `pageinspect` `toastinfo` `pg_visibility` `pg_freespacemap` `pgstattuple` `pgfincore` `pgcozy` `pg_prewarm`

版本

类型	仓库	版本	PG 大版本	包名	依赖
EXT	PIGSTY	`0.1`	1817161514	`pagevis`	-
RPM	PIGSTY	`0.1`	1817161514	`pagevis_$v`	-
DEB	PIGSTY	`0.1`	1817161514	`postgresql-$v-pagevis`	-

OS / PG	PG18	PG17	PG16	PG15	PG14
el8.x86_64	PIGSTY 0.1 el8.x86_64.pg18 : pagevis_18 pagevis_18-0.1-1PIGSTY.el8.x86_64.rpm PIGSTY · 0.1 · 8.1KiB	PIGSTY 0.1 el8.x86_64.pg17 : pagevis_17 pagevis_17-0.1-1PIGSTY.el8.x86_64.rpm PIGSTY · 0.1 · 8.1KiB	PIGSTY 0.1 el8.x86_64.pg16 : pagevis_16 pagevis_16-0.1-1PIGSTY.el8.x86_64.rpm PIGSTY · 0.1 · 8.1KiB	PIGSTY 0.1 el8.x86_64.pg15 : pagevis_15 pagevis_15-0.1-1PIGSTY.el8.x86_64.rpm PIGSTY · 0.1 · 8.1KiB	PIGSTY 0.1 el8.x86_64.pg14 : pagevis_14 pagevis_14-0.1-1PIGSTY.el8.x86_64.rpm PIGSTY · 0.1 · 8.1KiB
el8.aarch64	PIGSTY 0.1 el8.aarch64.pg18 : pagevis_18 pagevis_18-0.1-1PIGSTY.el8.aarch64.rpm PIGSTY · 0.1 · 8.1KiB	PIGSTY 0.1 el8.aarch64.pg17 : pagevis_17 pagevis_17-0.1-1PIGSTY.el8.aarch64.rpm PIGSTY · 0.1 · 8.1KiB	PIGSTY 0.1 el8.aarch64.pg16 : pagevis_16 pagevis_16-0.1-1PIGSTY.el8.aarch64.rpm PIGSTY · 0.1 · 8.1KiB	PIGSTY 0.1 el8.aarch64.pg15 : pagevis_15 pagevis_15-0.1-1PIGSTY.el8.aarch64.rpm PIGSTY · 0.1 · 8.1KiB	PIGSTY 0.1 el8.aarch64.pg14 : pagevis_14 pagevis_14-0.1-1PIGSTY.el8.aarch64.rpm PIGSTY · 0.1 · 8.1KiB
el9.x86_64	PIGSTY 0.1 el9.x86_64.pg18 : pagevis_18 pagevis_18-0.1-1PIGSTY.el9.x86_64.rpm PIGSTY · 0.1 · 8.2KiB	PIGSTY 0.1 el9.x86_64.pg17 : pagevis_17 pagevis_17-0.1-1PIGSTY.el9.x86_64.rpm PIGSTY · 0.1 · 8.2KiB	PIGSTY 0.1 el9.x86_64.pg16 : pagevis_16 pagevis_16-0.1-1PIGSTY.el9.x86_64.rpm PIGSTY · 0.1 · 8.2KiB	PIGSTY 0.1 el9.x86_64.pg15 : pagevis_15 pagevis_15-0.1-1PIGSTY.el9.x86_64.rpm PIGSTY · 0.1 · 8.2KiB	PIGSTY 0.1 el9.x86_64.pg14 : pagevis_14 pagevis_14-0.1-1PIGSTY.el9.x86_64.rpm PIGSTY · 0.1 · 8.2KiB
el9.aarch64	PIGSTY 0.1 el9.aarch64.pg18 : pagevis_18 pagevis_18-0.1-1PIGSTY.el9.aarch64.rpm PIGSTY · 0.1 · 8.1KiB	PIGSTY 0.1 el9.aarch64.pg17 : pagevis_17 pagevis_17-0.1-1PIGSTY.el9.aarch64.rpm PIGSTY · 0.1 · 8.1KiB	PIGSTY 0.1 el9.aarch64.pg16 : pagevis_16 pagevis_16-0.1-1PIGSTY.el9.aarch64.rpm PIGSTY · 0.1 · 8.1KiB	PIGSTY 0.1 el9.aarch64.pg15 : pagevis_15 pagevis_15-0.1-1PIGSTY.el9.aarch64.rpm PIGSTY · 0.1 · 8.1KiB	PIGSTY 0.1 el9.aarch64.pg14 : pagevis_14 pagevis_14-0.1-1PIGSTY.el9.aarch64.rpm PIGSTY · 0.1 · 8.1KiB
el10.x86_64	PIGSTY 0.1 el10.x86_64.pg18 : pagevis_18 pagevis_18-0.1-1PIGSTY.el10.x86_64.rpm PIGSTY · 0.1 · 8.2KiB	PIGSTY 0.1 el10.x86_64.pg17 : pagevis_17 pagevis_17-0.1-1PIGSTY.el10.x86_64.rpm PIGSTY · 0.1 · 8.2KiB	PIGSTY 0.1 el10.x86_64.pg16 : pagevis_16 pagevis_16-0.1-1PIGSTY.el10.x86_64.rpm PIGSTY · 0.1 · 8.2KiB	PIGSTY 0.1 el10.x86_64.pg15 : pagevis_15 pagevis_15-0.1-1PIGSTY.el10.x86_64.rpm PIGSTY · 0.1 · 8.2KiB	PIGSTY 0.1 el10.x86_64.pg14 : pagevis_14 pagevis_14-0.1-1PIGSTY.el10.x86_64.rpm PIGSTY · 0.1 · 8.2KiB
el10.aarch64	PIGSTY 0.1 el10.aarch64.pg18 : pagevis_18 pagevis_18-0.1-1PIGSTY.el10.aarch64.rpm PIGSTY · 0.1 · 8.2KiB	PIGSTY 0.1 el10.aarch64.pg17 : pagevis_17 pagevis_17-0.1-1PIGSTY.el10.aarch64.rpm PIGSTY · 0.1 · 8.2KiB	PIGSTY 0.1 el10.aarch64.pg16 : pagevis_16 pagevis_16-0.1-1PIGSTY.el10.aarch64.rpm PIGSTY · 0.1 · 8.2KiB	PIGSTY 0.1 el10.aarch64.pg15 : pagevis_15 pagevis_15-0.1-1PIGSTY.el10.aarch64.rpm PIGSTY · 0.1 · 8.2KiB	PIGSTY 0.1 el10.aarch64.pg14 : pagevis_14 pagevis_14-0.1-1PIGSTY.el10.aarch64.rpm PIGSTY · 0.1 · 8.2KiB
d12.x86_64	PIGSTY 0.1 d12.x86_64.pg18 : postgresql-18-pagevis postgresql-18-pagevis_0.1-1PIGSTY~bookworm_amd64.deb PIGSTY · 0.1 · 5.2KiB	PIGSTY 0.1 d12.x86_64.pg17 : postgresql-17-pagevis postgresql-17-pagevis_0.1-1PIGSTY~bookworm_amd64.deb PIGSTY · 0.1 · 5.2KiB	PIGSTY 0.1 d12.x86_64.pg16 : postgresql-16-pagevis postgresql-16-pagevis_0.1-1PIGSTY~bookworm_amd64.deb PIGSTY · 0.1 · 5.2KiB	PIGSTY 0.1 d12.x86_64.pg15 : postgresql-15-pagevis postgresql-15-pagevis_0.1-1PIGSTY~bookworm_amd64.deb PIGSTY · 0.1 · 5.2KiB	PIGSTY 0.1 d12.x86_64.pg14 : postgresql-14-pagevis postgresql-14-pagevis_0.1-1PIGSTY~bookworm_amd64.deb PIGSTY · 0.1 · 5.2KiB
d12.aarch64	PIGSTY 0.1 d12.aarch64.pg18 : postgresql-18-pagevis postgresql-18-pagevis_0.1-1PIGSTY~bookworm_arm64.deb PIGSTY · 0.1 · 5.2KiB	PIGSTY 0.1 d12.aarch64.pg17 : postgresql-17-pagevis postgresql-17-pagevis_0.1-1PIGSTY~bookworm_arm64.deb PIGSTY · 0.1 · 5.2KiB	PIGSTY 0.1 d12.aarch64.pg16 : postgresql-16-pagevis postgresql-16-pagevis_0.1-1PIGSTY~bookworm_arm64.deb PIGSTY · 0.1 · 5.2KiB	PIGSTY 0.1 d12.aarch64.pg15 : postgresql-15-pagevis postgresql-15-pagevis_0.1-1PIGSTY~bookworm_arm64.deb PIGSTY · 0.1 · 5.2KiB	PIGSTY 0.1 d12.aarch64.pg14 : postgresql-14-pagevis postgresql-14-pagevis_0.1-1PIGSTY~bookworm_arm64.deb PIGSTY · 0.1 · 5.2KiB
d13.x86_64	PIGSTY 0.1 d13.x86_64.pg18 : postgresql-18-pagevis postgresql-18-pagevis_0.1-1PIGSTY~trixie_amd64.deb PIGSTY · 0.1 · 5.2KiB	PIGSTY 0.1 d13.x86_64.pg17 : postgresql-17-pagevis postgresql-17-pagevis_0.1-1PIGSTY~trixie_amd64.deb PIGSTY · 0.1 · 5.2KiB	PIGSTY 0.1 d13.x86_64.pg16 : postgresql-16-pagevis postgresql-16-pagevis_0.1-1PIGSTY~trixie_amd64.deb PIGSTY · 0.1 · 5.2KiB	PIGSTY 0.1 d13.x86_64.pg15 : postgresql-15-pagevis postgresql-15-pagevis_0.1-1PIGSTY~trixie_amd64.deb PIGSTY · 0.1 · 5.2KiB	PIGSTY 0.1 d13.x86_64.pg14 : postgresql-14-pagevis postgresql-14-pagevis_0.1-1PIGSTY~trixie_amd64.deb PIGSTY · 0.1 · 5.2KiB
d13.aarch64	PIGSTY 0.1 d13.aarch64.pg18 : postgresql-18-pagevis postgresql-18-pagevis_0.1-1PIGSTY~trixie_arm64.deb PIGSTY · 0.1 · 5.2KiB	PIGSTY 0.1 d13.aarch64.pg17 : postgresql-17-pagevis postgresql-17-pagevis_0.1-1PIGSTY~trixie_arm64.deb PIGSTY · 0.1 · 5.2KiB	PIGSTY 0.1 d13.aarch64.pg16 : postgresql-16-pagevis postgresql-16-pagevis_0.1-1PIGSTY~trixie_arm64.deb PIGSTY · 0.1 · 5.2KiB	PIGSTY 0.1 d13.aarch64.pg15 : postgresql-15-pagevis postgresql-15-pagevis_0.1-1PIGSTY~trixie_arm64.deb PIGSTY · 0.1 · 5.2KiB	PIGSTY 0.1 d13.aarch64.pg14 : postgresql-14-pagevis postgresql-14-pagevis_0.1-1PIGSTY~trixie_arm64.deb PIGSTY · 0.1 · 5.2KiB
u22.x86_64	PIGSTY 0.1 u22.x86_64.pg18 : postgresql-18-pagevis postgresql-18-pagevis_0.1-1PIGSTY~jammy_amd64.deb PIGSTY · 0.1 · 5.2KiB	PIGSTY 0.1 u22.x86_64.pg17 : postgresql-17-pagevis postgresql-17-pagevis_0.1-1PIGSTY~jammy_amd64.deb PIGSTY · 0.1 · 5.2KiB	PIGSTY 0.1 u22.x86_64.pg16 : postgresql-16-pagevis postgresql-16-pagevis_0.1-1PIGSTY~jammy_amd64.deb PIGSTY · 0.1 · 5.2KiB	PIGSTY 0.1 u22.x86_64.pg15 : postgresql-15-pagevis postgresql-15-pagevis_0.1-1PIGSTY~jammy_amd64.deb PIGSTY · 0.1 · 5.2KiB	PIGSTY 0.1 u22.x86_64.pg14 : postgresql-14-pagevis postgresql-14-pagevis_0.1-1PIGSTY~jammy_amd64.deb PIGSTY · 0.1 · 5.2KiB
u22.aarch64	PIGSTY 0.1 u22.aarch64.pg18 : postgresql-18-pagevis postgresql-18-pagevis_0.1-1PIGSTY~jammy_arm64.deb PIGSTY · 0.1 · 5.2KiB	PIGSTY 0.1 u22.aarch64.pg17 : postgresql-17-pagevis postgresql-17-pagevis_0.1-1PIGSTY~jammy_arm64.deb PIGSTY · 0.1 · 5.2KiB	PIGSTY 0.1 u22.aarch64.pg16 : postgresql-16-pagevis postgresql-16-pagevis_0.1-1PIGSTY~jammy_arm64.deb PIGSTY · 0.1 · 5.2KiB	PIGSTY 0.1 u22.aarch64.pg15 : postgresql-15-pagevis postgresql-15-pagevis_0.1-1PIGSTY~jammy_arm64.deb PIGSTY · 0.1 · 5.2KiB	PIGSTY 0.1 u22.aarch64.pg14 : postgresql-14-pagevis postgresql-14-pagevis_0.1-1PIGSTY~jammy_arm64.deb PIGSTY · 0.1 · 5.2KiB
u24.x86_64	PIGSTY 0.1 u24.x86_64.pg18 : postgresql-18-pagevis postgresql-18-pagevis_0.1-1PIGSTY~noble_amd64.deb PIGSTY · 0.1 · 5.2KiB	PIGSTY 0.1 u24.x86_64.pg17 : postgresql-17-pagevis postgresql-17-pagevis_0.1-1PIGSTY~noble_amd64.deb PIGSTY · 0.1 · 5.2KiB	PIGSTY 0.1 u24.x86_64.pg16 : postgresql-16-pagevis postgresql-16-pagevis_0.1-1PIGSTY~noble_amd64.deb PIGSTY · 0.1 · 5.2KiB	PIGSTY 0.1 u24.x86_64.pg15 : postgresql-15-pagevis postgresql-15-pagevis_0.1-1PIGSTY~noble_amd64.deb PIGSTY · 0.1 · 5.2KiB	PIGSTY 0.1 u24.x86_64.pg14 : postgresql-14-pagevis postgresql-14-pagevis_0.1-1PIGSTY~noble_amd64.deb PIGSTY · 0.1 · 5.2KiB
u24.aarch64	PIGSTY 0.1 u24.aarch64.pg18 : postgresql-18-pagevis postgresql-18-pagevis_0.1-1PIGSTY~noble_arm64.deb PIGSTY · 0.1 · 5.2KiB	PIGSTY 0.1 u24.aarch64.pg17 : postgresql-17-pagevis postgresql-17-pagevis_0.1-1PIGSTY~noble_arm64.deb PIGSTY · 0.1 · 5.2KiB	PIGSTY 0.1 u24.aarch64.pg16 : postgresql-16-pagevis postgresql-16-pagevis_0.1-1PIGSTY~noble_arm64.deb PIGSTY · 0.1 · 5.2KiB	PIGSTY 0.1 u24.aarch64.pg15 : postgresql-15-pagevis postgresql-15-pagevis_0.1-1PIGSTY~noble_arm64.deb PIGSTY · 0.1 · 5.2KiB	PIGSTY 0.1 u24.aarch64.pg14 : postgresql-14-pagevis postgresql-14-pagevis_0.1-1PIGSTY~noble_arm64.deb PIGSTY · 0.1 · 5.2KiB
u26.x86_64	PIGSTY 0.1 u26.x86_64.pg18 : postgresql-18-pagevis postgresql-18-pagevis_0.1-1PIGSTY~resolute_amd64.deb PIGSTY · 0.1 · 5.2KiB	PIGSTY 0.1 u26.x86_64.pg17 : postgresql-17-pagevis postgresql-17-pagevis_0.1-1PIGSTY~resolute_amd64.deb PIGSTY · 0.1 · 5.2KiB	PIGSTY 0.1 u26.x86_64.pg16 : postgresql-16-pagevis postgresql-16-pagevis_0.1-1PIGSTY~resolute_amd64.deb PIGSTY · 0.1 · 5.2KiB	PIGSTY 0.1 u26.x86_64.pg15 : postgresql-15-pagevis postgresql-15-pagevis_0.1-1PIGSTY~resolute_amd64.deb PIGSTY · 0.1 · 5.2KiB	PIGSTY 0.1 u26.x86_64.pg14 : postgresql-14-pagevis postgresql-14-pagevis_0.1-1PIGSTY~resolute_amd64.deb PIGSTY · 0.1 · 5.2KiB
u26.aarch64	PIGSTY 0.1 u26.aarch64.pg18 : postgresql-18-pagevis postgresql-18-pagevis_0.1-1PIGSTY~resolute_arm64.deb PIGSTY · 0.1 · 5.2KiB	PIGSTY 0.1 u26.aarch64.pg17 : postgresql-17-pagevis postgresql-17-pagevis_0.1-1PIGSTY~resolute_arm64.deb PIGSTY · 0.1 · 5.2KiB	PIGSTY 0.1 u26.aarch64.pg16 : postgresql-16-pagevis postgresql-16-pagevis_0.1-1PIGSTY~resolute_arm64.deb PIGSTY · 0.1 · 5.2KiB	PIGSTY 0.1 u26.aarch64.pg15 : postgresql-15-pagevis postgresql-15-pagevis_0.1-1PIGSTY~resolute_arm64.deb PIGSTY · 0.1 · 5.2KiB	PIGSTY 0.1 u26.aarch64.pg14 : postgresql-14-pagevis postgresql-14-pagevis_0.1-1PIGSTY~resolute_arm64.deb PIGSTY · 0.1 · 5.2KiB

构建

您可以使用 pig build 命令构建 pagevis 扩展的 RPM / DEB 包：

BASH

pig build pkg pagevis         # 构建 RPM / DEB 包

安装

您可以直接安装 pagevis 扩展包的预置二进制包，首先确保 PGDG 和 PIGSTY 仓库已经添加并启用：

BASH

pig repo add pgsql -u          # 添加仓库并更新缓存

使用 pig 或者是 apt/yum/dnf 安装扩展：

安装

BASH

pig install pagevis;          # 当前活跃 PG 版本安装

pig

BASH

pig ext install -y pagevis -v 18  # PG 18
pig ext install -y pagevis -v 17  # PG 17
pig ext install -y pagevis -v 16  # PG 16
pig ext install -y pagevis -v 15  # PG 15
pig ext install -y pagevis -v 14  # PG 14

dnf

BASH

dnf install -y pagevis_18       # PG 18
dnf install -y pagevis_17       # PG 17
dnf install -y pagevis_16       # PG 16
dnf install -y pagevis_15       # PG 15
dnf install -y pagevis_14       # PG 14

apt

BASH

apt install -y postgresql-18-pagevis   # PG 18
apt install -y postgresql-17-pagevis   # PG 17
apt install -y postgresql-16-pagevis   # PG 16
apt install -y postgresql-15-pagevis   # PG 15
apt install -y postgresql-14-pagevis   # PG 14

创建扩展：

SQL

CREATE EXTENSION pagevis;

用法

pagevis: PostgreSQL 数据库页面的 ASCII 可视化

pagevis 提供 PostgreSQL 数据库页面内容的 ASCII 图形化表示。它依赖 pageinspect 扩展。

函数

SQL

-- show_page(关系名, 块号, 行宽)
SELECT show_page('my_table', 0, 64);

输出字符

字符	含义
`P`	页头
`U`	未使用的行指针
`N`	正常行指针
`R`	重定向行指针
`D`	已死行指针
(空格)	空闲空间（“空洞”）
`[n]`	元组编号（叠加在元组头上）
`H`	元组头
`#`	元组数据
`-`	对当前事务不可见的元组（已死）
`.`	元组间填充

示例

SQL

SELECT show_page('pvtest', 0, 64);
                             show_page
------------------------------------------------------------------
 PPPPPPPPPPPPPPPPPPPPPPPP001N002N003N004N005N006N007N008N009N010N
 011N012N013N014N015N016N017N018N019N020N...

 [226]HHHHHHHHHHHHHHHHHHH####....[225]HHHHHHHHHHHHHHHHHHH####....
 [224]HHHHHHHHHHHHHHHHHHH####....[223]HHHHHHHHHHHHHHHHHHH####....

页头（P）和行指针（N）出现在开头，空闲空间在中间，元组从页面末尾向前增长。当行指针和元组之间没有剩余空间时，页面就满了。

需要超级用户权限（使用 pageinspect 的 get_raw_page）。

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