最近,我需要将对象从PostgreSQL的默认模式“ public”移动到另一个模式。我发现this帖子显示了如何移动表格,这很棒,但我也需要移动功能。
您可以进一步完善循环(演示仅第二个查询):
DO
$do$
DECLARE
r record;
sql text = '';
BEGIN
FOR r IN
SELECT p.proname, pg_get_function_identity_arguments(p.oid) AS params
FROM pg_proc p
JOIN pg_namespace n ON n.oid = p.pronamespace
WHERE nspname = 'public'
-- and other conditions, if needed
LOOP
sql := sql
|| format(E'\nALTER FUNCTION public.%I(%s) SET SCHEMA new_schema;'
,r.proname, r.params);
END LOOP;
RAISE NOTICE '%', sql; -- for viewing the sql before executing it
-- EXECUTE sql; -- for executing the sql
END
$do$;
plpgsql中的赋值运算符为:=
。 =
有效,但未记录。
从FROM
中删除不需要的表。
[concat()
可能有点过头,但是format()
简化了语法。
将问题重铸为基于集合的操作更有效。一个带有string_agg()
的SELECT可以完成这项工作:
DO
$do$
DECLARE
sql text;
BEGIN
SELECT INTO sql
string_agg(format('ALTER FUNCTION public.%I(%s) SET SCHEMA new_schema;'
,p.proname, pg_get_function_identity_arguments(p.oid)), E'\n')
FROM pg_proc p
JOIN pg_namespace n ON n.oid = p.pronamespace
WHERE nspname = 'public';
-- and other conditions, if needed
RAISE NOTICE '%', sql; -- for viewing the sql before executing it
-- EXECUTE sql; -- for executing the sql
END
$do$;
DO$$
DECLARE
row record;
BEGIN
FOR row IN SELECT tablename FROM pg_tables WHERE schemaname = 'public' -- and other conditions, if needed
LOOP
EXECUTE 'ALTER TABLE public.' || quote_ident(row.tablename) || ' SET SCHEMA [new_schema];';
END LOOP;
END;
$$;
DO$$
DECLARE
row record;
sql text = E'\n';
BEGIN
FOR row IN
SELECT
proname::text as proname,
pg_get_function_identity_arguments(p.oid) AS params
FROM pg_proc p
JOIN pg_namespace n on n.oid = p.pronamespace
WHERE nspname = 'public'
-- and other conditions, if needed
LOOP
sql = CONCAT(sql, E'\n',
'ALTER FUNCTION public.', row.proname,
'(', row.params, ') SET SCHEMA [new_schema];');
END LOOP;
RAISE NOTICE '%', sql; -- for viewing the sql before executing it
-- EXECUTE sql; -- for executing the sql
END;$$;