pg_query显示/描述表

Question

有没有办法显示所有表，描述它们\ d并将结果转储到php？

任何想法可以理解

Answer 1

您可以从information_schema.tables获取数据。

Answer 2

Yea, Meta information about your database is stored in pg_catalog.

Answer 3

下面是我在日志中看到，当我在psql的shell中运行\d：

SELECT n.nspname as "Schema", 
     c.relname as "Name", 
     CASE c.relkind WHEN 'r' THEN 'table' WHEN 'v' THEN 'view' WHEN 'i' THEN 'index' WHEN 'S' THEN 'sequence' WHEN 's' THEN 'special' END as "Type", 
     r.rolname as "Owner" 
    FROM pg_catalog.pg_class c 
     JOIN pg_catalog.pg_roles r ON r.oid = c.relowner 
     LEFT JOIN pg_catalog.pg_namespace n ON n.oid = c.relnamespace 
    WHERE c.relkind IN ('r','v','S','') 
      AND n.nspname NOT IN ('pg_catalog', 'pg_toast') 
     AND pg_catalog.pg_table_is_visible(c.oid) 
    ORDER BY 1,2; 

Answer 4

运行psql -E，然后输入所有有趣的\ x的命令（如\ DT，\ d表），并阅读它将显示的内容。

Answer 5

还有pg_dump --schema-only。