我在pipelinedb（基于postgresql 9.5.3）中创建了一个连续的Trasformer，以捕获设备状态代码已更改的数据。 然后这个CONTINUOUS TRANSFORM将调用一个函数（触发器）， 在该函数中，代码根据设备状态代码的变化计算设备状态变化的时间范围，并将其写入表中。 功能中的操作包含选择/更新/插入。 在运行期间，我在数据库日志中发现了很多错误消息，但是这些错误似乎并不影响代码的正常执行。 但是，我仍然担心当我继续在数据库中收到此错误时会发生的坏事。
8月12日03:38:44 tst-gp5-srv3管道[19296]：[141958-1] 错误：relcache引用ct_rtd_his_narrow_func_fs不属于资源所有者TopTransaction 8月12日03:38:44 tst-gp5-srv3管道[19296]：[141958-2]声明：ct_rtd_his_narrow_func_fs
CREATE OR REPLACE FUNCTION chr.f_modify_mn_ver_fs()
RETURNS trigger AS
$$
DECLARE
v_rowcount int;
BEGIN
IF COALESCE(NEW.new_dev,'') <> COALESCE(NEW.old_dev,'') THEN
SELECT count(1) INTO v_rowcount FROM chr.t_mn_ver_fs WHERE mn_code=NEW.mn_code AND ver_type='dev' AND is_current='Y';
IF v_rowcount > 0 THEN
UPDATE chr.t_mn_ver
SET end_time = NEW.arvl_time,
is_current = 'N',
update_time = clock_timestamp()
WHERE mn_code = NEW.mn_code
AND ver_type='dev'
AND is_current = 'Y';
END IF;
INSERT INTO chr.t_mn_ver_fs (mn_code, ver_type, ver, begin_time, end_time, is_current, insert_time)
VALUES (NEW.mn_code, 'dev', NEW.new_sver, NEW.arvl_time, NULL, 'Y', clock_timestamp());
END IF;
IF COALESCE(NEW.new_usg,'') <> COALESCE(NEW.old_usg,'') THEN
SELECT count(1) INTO v_rowcount FROM chr.t_mn_ver_fs WHERE mn_code=NEW.mn_code AND ver_type='usg' AND is_current='Y';
IF v_rowcount > 0 THEN
UPDATE chr.t_mn_ver_fs
SET end_time = NEW.arvl_time,
is_current = 'N',
update_time = clock_timestamp()
WHERE mn_code = NEW.mn_code
AND ver_type='usg'
AND is_current = 'Y';
END IF;
INSERT INTO chr.t_mn_ver_fs (mn_code, ver_type, ver, begin_time, end_time, is_current, insert_time)
VALUES (NEW.mn_code, 'usg', NEW.new_usg, NEW.arvl_time, NULL, 'Y', clock_timestamp());
END IF;
IF COALESCE(NEW.new_sver,'') <> COALESCE(NEW.old_sver,'') THEN
SELECT count(1) INTO v_rowcount FROM chr.t_mn_ver_fs WHERE mn_code=NEW.mn_code AND ver_type='sver' AND is_current='Y';
IF v_rowcount > 0 THEN
UPDATE chr.t_mn_ver_fs
SET end_time = NEW.arvl_time,
is_current = 'N',
update_time = clock_timestamp()
WHERE mn_code = NEW.mn_code
AND ver_type='sver'
AND is_current = 'Y';
END IF;
INSERT INTO chr.t_mn_ver_fs (mn_code, ver_type, ver, begin_time, end_time, is_current, insert_time)
VALUES (NEW.mn_code, 'sver', NEW.new_sver, NEW.arvl_time, NULL, 'Y', clock_timestamp());
END IF;
IF COALESCE(NEW.new_hver,'') <> COALESCE(NEW.old_hver,'') THEN
SELECT count(1) INTO v_rowcount FROM chr.t_mn_ver_fs WHERE mn_code=NEW.mn_code AND ver_type='hver' AND is_current='Y';
IF v_rowcount > 0 THEN
UPDATE chr.t_mn_ver
SET end_time = NEW.arvl_time,
is_current = 'N',
update_time = clock_timestamp()
WHERE mn_code = NEW.mn_code
AND ver_type='hver'
AND is_current = 'Y';
END IF;
INSERT INTO chr.t_mn_ver_fs (mn_code, ver_type, ver, begin_time, end_time, is_current, insert_time)
VALUES (NEW.mn_code, 'hver', NEW.new_hver, NEW.arvl_time, NULL, 'Y', clock_timestamp());
END IF;
RETURN NEW;
END;
$$
LANGUAGE plpgsql;