系统所在楼层
1. 系统下有设备
2. 系统下的设备有所属楼层关系
Eq2Fl
1. 通过 系统 --> 设备 --> 楼层 的间接关系, 获取系统所在楼层的关系
2. 计算关系存储在表 r_sy_in_fl 中
-- 系统所在楼层
create or replace function public.rel_sy2fl(project_id character varying) returns boolean
as
$$
try:
# 将下面对数据库的操作作为一个事务, 出异常则自动rollback
with plpy.subtransaction():
delete_plan = plpy.prepare("delete from r_sy_in_fl where project_id = $1 and sign = 2", ["text"])
delete_plan.execute([project_id])
join_plan = plpy.prepare("select sy.sys_id, eq.building_id, eq.floor_id from r_sy_eq sy inner join equipment eq on sy.equip_id = eq.id where eq.project_id = $1 and sy.project_id = $1 and eq.floor_id is not null", ["text"])
rel = join_plan.execute([project_id])
sy2bd = dict()
for row in rel:
sys = row['sys_id']
building = row['building_id']
floor = row['floor_id']
if sys not in sy2bd:
sy2bd[sys] = dict()
sys_dict = sy2bd[sys]
sys_dict[floor] = building
for sid, sys_dict in sy2bd.items():
for floor, building in sys_dict.items():
plan = plpy.prepare("insert into r_sy_in_fl(sys_id, floor_id, building_id, project_id, sign) values($1, $2, $3, $4, 2)", ["text", "text", "text", "text"])
plan.execute([sid, floor, building, project_id])
except Exception as e:
plpy.warning(e)
return False
else:
return True
$$
LANGUAGE 'plpython3u' VOLATILE;
1. 项目id
select public.rel_sy2fl('Pj1101010015');