-- 基於主變及進行確定最大basev
select stationname, max (basev) tran_ln, 0 bus
from tb_topo_line
where linetype in (12, 271, 527, 783)
group by stationname;
-- 基於母線確定最大basev
select stationname, 0 tran_ln, max (basev) bus
from tb_topo_node
where nodetype2 = 11
group by stationname;
-- 聯合以上2種方法,確定最大basev
-- 更新 tb_dev_substation table
update tb_dev_substation a
set a.basev = (
select b.basev from( select stationname,
decode (greatest (max (tran_ln), max (bus)),
500, 0,
220, 1,
110, 2,
35, 3,
10, 4,
1, 5,
6, 6,
7, 0.4,
-1)basev,
max (tran_ln) max_tran_ln,
max (bus) max_bus
from ( select stationname, max (basev) tran_ln, 0 bus
from tb_topo_line
where linetype in (12, 271, 527, 783)
group by stationname
union
select stationname, 0 tran_ln, max (basev) bus
from tb_topo_node
where nodetype2 = 11
group by stationname)
group by stationname
order by stationname)b where a.name = b.stationname);
-- 更新 tb_eva_keyuser table
select * from tb_eva_keyuser;
update tb_eva_keyuser a
set a.basev = (
select b.basev from( select stationname,
greatest (max (tran_ln), max (bus)) basev,
max (tran_ln) max_tran_ln,
max (bus) max_bus
from ( select stationname, max (basev) tran_ln, 0 bus
from tb_topo_line
where linetype in (12, 271, 527, 783)
group by stationname
union
select stationname, 0 tran_ln, max (basev) bus
from tb_topo_node
where nodetype2 = 11
group by stationname)
group by stationname
order by stationname)b where a.name = b.stationname);
select *
from (select distinct name from tb_dev_substation) a
where a.name not in (select distinct stationname from tb_topo_line);
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