On 8/2/22 11:37 AM, Ron wrote:
AWS RDS Postgresql 12.10

There are no indices or constraints (except for NOT NULL) on table_a.

The two ways that I know are:
     INSERT INTO table_a SELECT * FROM table_b;
and
     \COPY table_a TO '/tmp/table_a.tsv' WITH (FORMAT BINARY);
     \COPY table_b FROM '/tmp/table_a.tsv' WITH (FORMAT BINARY);

Is there a faster/better way?

Does table_a have existing records?

If so do you care if there are duplicates?

How large a data set are you talking about?

--
Adrian Klaver
adrian.kla...@aklaver.com


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