在准备环境前提交次全部更改。

scripts/ops/check_fdw_prereqs.py

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+# -*- coding: utf-8 -*-
+"""检查 FDW 前提条件：角色是否存在、app schema 是否有视图/表"""
+import psycopg2
+
+CONN = dict(host="100.64.0.4", port=5432, user="local-Python", password="Neo-local-1991125")
+
+print("=== 1. 检查角色 ===")
+c = psycopg2.connect(**CONN, dbname="postgres")
+cur = c.cursor()
+for role in ["app_reader", "app_user"]:
+    cur.execute("SELECT 1 FROM pg_roles WHERE rolname = %s", (role,))
+    exists = cur.fetchone() is not None
+    print(f"  {role}: {'OK' if exists else 'MISSING'}")
+c.close()
+
+print("\n=== 2. 检查 etl_feiqiu.app schema 对象 ===")
+c = psycopg2.connect(**CONN, dbname="etl_feiqiu")
+cur = c.cursor()
+cur.execute(
+    "SELECT tablename FROM pg_tables WHERE schemaname = 'app' ORDER BY tablename"
+)
+tables = [r[0] for r in cur.fetchall()]
+cur.execute(
+    "SELECT viewname FROM pg_views WHERE schemaname = 'app' ORDER BY viewname"
+)
+views = [r[0] for r in cur.fetchall()]
+cur.execute(
+    "SELECT matviewname FROM pg_matviews WHERE schemaname = 'app' ORDER BY matviewname"
+)
+mvs = [r[0] for r in cur.fetchall()]
+print(f"  tables: {len(tables)} {tables[:5]}{'...' if len(tables)>5 else ''}")
+print(f"  views: {len(views)} {views[:5]}{'...' if len(views)>5 else ''}")
+print(f"  matviews: {len(mvs)} {mvs[:5]}{'...' if len(mvs)>5 else ''}")
+c.close()
+
+print("\n=== 3. 检查 test_etl_feiqiu.app schema 对象 ===")
+c = psycopg2.connect(**CONN, dbname="test_etl_feiqiu")
+cur = c.cursor()
+cur.execute(
+    "SELECT tablename FROM pg_tables WHERE schemaname = 'app' ORDER BY tablename"
+)
+tables2 = [r[0] for r in cur.fetchall()]
+cur.execute(
+    "SELECT viewname FROM pg_views WHERE schemaname = 'app' ORDER BY viewname"
+)
+views2 = [r[0] for r in cur.fetchall()]
+cur.execute(
+    "SELECT matviewname FROM pg_matviews WHERE schemaname = 'app' ORDER BY matviewname"
+)
+mvs2 = [r[0] for r in cur.fetchall()]
+print(f"  tables: {len(tables2)} {tables2[:5]}{'...' if len(tables2)>5 else ''}")
+print(f"  views: {len(views2)} {views2[:5]}{'...' if len(views2)>5 else ''}")
+print(f"  matviews: {len(mvs2)} {mvs2[:5]}{'...' if len(mvs2)>5 else ''}")
+c.close()
+
+print("\n=== 4. 检查 postgres_fdw 扩展可用性 ===")
+for db in ["zqyy_app", "test_zqyy_app"]:
+    c = psycopg2.connect(**CONN, dbname=db)
+    cur = c.cursor()
+    cur.execute("SELECT 1 FROM pg_available_extensions WHERE name = 'postgres_fdw'")
+    avail = cur.fetchone() is not None
+    cur.execute("SELECT 1 FROM pg_extension WHERE extname = 'postgres_fdw'")
+    installed = cur.fetchone() is not None
+    print(f"  {db}: available={avail}, installed={installed}")
+    c.close()