sql数据流，amdin业务逻辑接入

pages/mall/admin/user/test/check_function_exists.sql

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+-- Check if the function exists and show all overloaded versions
+SELECT
+    proname as function_name,
+    pg_get_function_arguments(oid) as arguments,
+    pg_get_functiondef(oid) as definition
+FROM pg_proc
+WHERE pronamespace = 'public'::regnamespace
+  AND proname = 'rpc_analytics_user_kpis'
+ORDER BY oid;
+
+-- Alternative: Check function existence with more details
+SELECT
+    n.nspname as schema_name,
+    p.proname as function_name,
+    pg_get_function_arguments(p.oid) as arguments,
+    pg_get_function_result(p.oid) as return_type,
+    p.prokind as function_type,
+    CASE p.prokind
+        WHEN 'f' THEN 'Function'
+        WHEN 'p' THEN 'Procedure'
+        WHEN 'a' THEN 'Aggregate'
+        WHEN 'w' THEN 'Window'
+    END as kind
+FROM pg_proc p
+JOIN pg_namespace n ON p.pronamespace = n.oid
+WHERE p.proname = 'rpc_analytics_user_kpis'
+  AND n.nspname = 'public'
+ORDER BY p.oid;
+
+-- Check all functions in public schema
+SELECT
+    proname as function_name,
+    pg_get_function_arguments(oid) as arguments
+FROM pg_proc
+WHERE pronamespace = 'public'::regnamespace
+ORDER BY proname;
+
+-- Quick existence check
+SELECT
+    EXISTS(
+        SELECT 1
+        FROM pg_proc
+        WHERE pronamespace = 'public'::regnamespace
+          AND proname = 'rpc_analytics_user_kpis'
+    ) as function_exists;