最近需要把老專案中oracle語法改為pg的，其中乙個邏輯為匯入excel資料，根據資料的唯一標識做插入或者更新操作，資料庫中有此資料，則執行更新，反之插入。
oracle**：
declare
v_count number;
begin
select
count(1
)into v_count from uns_author_manage a where a.author_no =
#author_no#;
<
![cdata[
if v_count =
0then
insert
into uns_author_manage
(id,
author_no,
author_type,
project_name,
project_property,
valid,
bid_invitation,
estimate_coverage,
estimate_ppremium,
author_person_name,
author_pseson_job,
operator,
operator_name,
create_date
)values
( seq_uns_author_manage.nextval
,nvl(
#author_no#,'')
,nvl(
#author_type#,'')
,nvl(
#project_name#,'')
,nvl(
#project_property#,'')
,nvl(
,nvl(
#valid#,'')
,nvl(
#bid_invitation#,'')
,nvl(
#estimate_coverage#,'')
,nvl(
#estimate_ppremium#,'')
,nvl(
#author_person_name#,'')
,nvl(
#author_pseson_job#,'')
,nvl(
#userid#,'')
,nvl(
#operator_name#,'')
,sysdate)
;else
update uns_author_manage
set author_type = nvl(
#author_type#,'')
,project_name = nvl(
#project_name#,'')
,project_property = nvl(
#project_property#,'')
,valid = nvl(
#valid#,'')
,bid_invitation = nvl(
#bid_invitation#,'')
,estimate_coverage = nvl(
#estimate_coverage#,'')
,estimate_ppremium = nvl(
#estimate_ppremium#,'')
,author_person_name = nvl(
#author_person_name#,'')
,author_pseson_job = nvl(
#author_pseson_job#,'')
,operator = nvl(
#userid#,'')
,operator_name = nvl(
#operator_name#,'')
,update_date = sysdate
where author_no =
#author_no#;
endif;]
]>
end;
insert
into uns_author_manage
(author_no,
author_type,
project_name,
project_property,
valid,
bid_invitation,
estimate_coverage,
estimate_ppremium,
author_person_name,
author_pseson_job,
operator,
operator_name,
create_date
)values
(coalesce
(#author_no#)
,coalesce
(#author_type#)
,coalesce
(#project_name#)
,coalesce
(#project_property#)
,coalesce(,
coalesce
(#valid#)
,coalesce
(#bid_invitation#)
,coalesce
(#estimate_coverage#)
,coalesce
(#estimate_ppremium#)
,coalesce
(#author_person_name#)
,coalesce
(#author_pseson_job#)
,coalesce
(#userid#)
,coalesce
(#operator_name#)
,now()
)on conflict(author_no)
doupdate
set
author_type =
coalesce
(#author_type#)
,project_name =
coalesce
(#project_name#)
,project_property =
coalesce
(#project_property#)
coalesce
(,valid =
coalesce
(#valid#)
,bid_invitation =
coalesce
(#bid_invitation#)
,estimate_coverage =
coalesce
(#estimate_coverage#)
,estimate_ppremium =
coalesce
(#estimate_ppremium#)
,author_person_name =
coalesce
(#author_person_name#)
,author_pseson_job =
coalesce
(#author_pseson_job#)
,operator =
coalesce
(#userid#)
,operator_name =
coalesce
(#operator_name#)
,update_date =
now(
);
conflict()函式修飾的鍵要具有唯一索引，否則會報錯，使用以下**建立唯一索引：
alter
table uns_author_manage add
constraint id_cons unique
(author_no)
;
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