Alternate in access database [duplicate]

问题

This question already has answers here:

Upserting in MS-access (5 answers)

Closed 4 years ago.

I want to check whether a row exists or not before inserting a new one in Access 2007.
I have the following working query in SQL Server but I'm having trouble converting it to Access.

update category set name='hell' where categoryid=287
if @@rowcount=0
begin
insert into category(categoryid,name,path,parentcategoryid,creationdate) values (287,'a','a',12,'')
end

回答1:

Try this

update category set name='hell' where categoryid=287;

if not exists(select * from Category where categoryid=287)
    insert into category(categoryid,name,path,parentcategoryid,creationdate) 
values (287,'a','a',12,'');

来源：https://stackoverflow.com/questions/32295708/alternate-in-access-database