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资产所在竖井

jxing 5 years ago
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      datacenter/docs/relation_calc/Pe2Sh.md

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datacenter/docs/relation_calc/Pe2Sh.md

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+资产所在竖井
+## 前置条件
+    1. 资产有绑定的设备或部件
+    2. 绑定的设备或部件有所在竖井关系
+    
+## 计算流程
+    根据 资产 --> 设备/部件 --> 竖井 的间接关系, 来获取资产所在竖井的关系
+    
+## 函数
+```
+-- 资产所在竖井
+create or replace function public.rel_pe2sh(project_id character varying) returns boolean
+as
+$$
+try:
+    # 将下面对数据库的操作作为一个事务, 出异常则自动rollback
+    with plpy.subtransaction():
+        delete_plan = plpy.prepare("delete from r_pe_in_sh where project_id = $1 and sign = 2", ["text"])
+        delete_plan.execute([project_id])
+        plan = plpy.prepare("insert into r_pe_in_sh(equip_id, shaft_id, project_id, sign) select pe.id, rel.shaft_id, rel.project_id, 2 from property pe inner join r_eq_in_sh rel on pe.equip_id = rel.equip_id where pe.project_id = $1 and rel.project_id = $1", ["text"])
+        plan.execute([project_id])
+except Exception as e:
+    plpy.warning(e)
+    return False
+else:
+    return True
+$$
+LANGUAGE 'plpython3u' VOLATILE;
+
+
+select public.rel_pe2sh('Pj1101010015');
+```
+
+## 入参
+    1. 项目id
+## 例子
+    select public.rel_pe2sh('Pj1101010015');