postgresql - postgres copy tables from another database using pg_dump? -

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i copy 2 tables database database b, in postgres how can using pg_dump without losing previous tables , data in database b ?

i read answers in stack overflow suggesting using pg_dump in documentation page read?

the idea behind dump method generate text file sql commands that, when fed server, recreate database in same state @ time of dump

doesn't mean delete previous data in database b?

if tell me step step solution move 2 tables in database database b without losing previous data in database b, helpful.

i found answer question :

sudo -u owner_user pg_dump -t users databasename1 | sudo -u owner_user psql databasename2

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