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Kin Fat SZEFlag for Hong Kong

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linking different user/schema

Hi,
I want to know is a way to linking different user/schema on same database other than dblink?
e.g. abc/abc007@samedb , def/def007@samedb
Will it must using dblink?
or any other way to do linking?
Thank  you!
Francis SZE
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what's that grant statement?
Thank YOU!

Francis SZE
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wait,,
select * from a,schema.b b
where a.id = b.f_id

schema.b is meaning username.b?

select * from a,def.b b
where a.id = b.f_id
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