【PostgreSQL】查询所有表和视图

在 PostgreSQL 中查找数据库中的视图和表，可以使用以下几种方法：

查询所有表和视图（包括系统表）

-- 查询所有表和视图的基本信息
SELECT table_schema, table_name, table_type 
FROM information_schema.tables 
WHERE table_schema NOT IN ('information_schema', 'pg_catalog')
ORDER BY table_schema, table_type, table_name;

分别查询表和视图

-- 只查询普通表
SELECT table_schema, table_name 
FROM information_schema.tables 
WHERE table_type = 'BASE TABLE' AND table_schema NOT IN ('information_schema', 'pg_catalog')
ORDER BY table_schema, table_name;-- 只查询视图
SELECT table_schema, table_name 
FROM information_schema.tables 
WHERE table_type = 'VIEW' AND table_schema NOT IN ('information_schema', 'pg_catalog')
ORDER BY table_schema, table_name;

使用 PostgreSQL 系统目录查询

-- 查询所有用户表
SELECT schemaname, tablename, tableowner 
FROM pg_tables 
WHERE schemaname NOT IN ('information_schema', 'pg_catalog')
ORDER BY schemaname, tablename;-- 查询所有视图
SELECT schemaname, viewname, viewowner 
FROM pg_views 
WHERE schemaname NOT IN ('information_schema', 'pg_catalog')
ORDER BY schemaname, viewname;-- 查询所有表和视图（合并查询）
SELECT schemaname, tablename, tableowner, 'TABLE' as object_type
FROM pg_tables 
WHERE schemaname NOT IN ('information_schema', 'pg_catalog')
UNION ALL
SELECT schemaname, viewname as tablename, viewowner as tableowner, 'VIEW' as object_type
FROM pg_views 
WHERE schemaname NOT IN ('information_schema', 'pg_catalog')
ORDER BY schemaname, tablename;

查询特定模式的表和视图

-- 查询 public 模式下的所有表和视图
SELECT table_schema, table_name, table_type 
FROM information_schema.tables 
WHERE table_schema = 'public'
ORDER BY table_type, table_name;-- 查询特定模式（如：sales）下的表和视图
SELECT table_schema, table_name, table_type 
FROM information_schema.tables 
WHERE table_schema = 'sales'
ORDER BY table_type, table_name;

获取更详细的信息

-- 获取表和视图的详细信息
SELECT n.nspname as schema_name,c.relname as object_name,CASE c.relkind WHEN 'r' THEN 'TABLE'WHEN 'v' THEN 'VIEW'WHEN 'm' THEN 'MATERIALIZED_VIEW'ELSE 'OTHER'END as object_type,obj_description(c.oid) as description
FROM pg_catalog.pg_class c
LEFT JOIN pg_catalog.pg_namespace n ON n.oid = c.relnamespace
WHERE c.relkind IN ('r', 'v', 'm')  -- r=表, v=视图, m=物化视图AND n.nspname NOT IN ('information_schema', 'pg_catalog')AND n.nspname !~ '^pg_toast'
ORDER BY n.nspname, c.relname;