pg_query顯示/描述表

Question

有沒有辦法顯示所有表，描述它們\ d並將結果轉儲到php？

任何想法可以理解

Answer 1

您可以從information_schema.tables獲取數據。

Answer 2

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

Answer 3

下面是我在日誌中看到，當我在psql的shell中運行\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

運行psql -E，然後輸入所有有趣的\ x的命令（如\ DT，\ d表），並閱讀它將顯示的內容。

Answer 5

還有pg_dump --schema-only。