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`CREATE TABLE AS Select` (CTAS) and its associated syntax creates a new table by performing the following - Run a CREATE TABLE using the table definition of every column in the SELECT - Populating the new table with the result set of the SELECT NOTE : The table created has no indexes or constraints.

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PostgreSQL: Why is CREATE TABLE AS faster than CREATE ... INSERT INTO?

With a COPY TABLE AS SELECT (CTAS). … CREATE TABLE main AS SELECT * FROM other; As separate statements with CREATE TABLE and INSERT INTO CREATE TABLE main (like other); INSERT INTO main SELECT * FROM other; I have observed that the CTAS
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