CREATE TABLE AS v14
CREATE TABLE AS -- define a new table from the results of a query.
CREATE TABLE AS creates a table and fills it with data computed by a
SELECT command. The table columns have the names and data types associated with the output columns of the
SELECT (except that you can override the column names by giving an explicit list of new column names).
CREATE TABLE AS bears some resemblance to creating a view, but it is really quite different: it creates a new table and evaluates the query just once to fill the new table initially. The new table will not track subsequent changes to the source tables of the query. In contrast, a view re-evaluates its defining
SELECT statement whenever it is queried.
If specified, the table is created as a temporary table. Refer to
CREATE TABLE for details.
The name (optionally schema-qualified) of the table to be created.
The name of a column in the new table. If column names are not provided, they are taken from the output column names of the query.
A query statement ( a
SELECT command). Refer to
SELECT for a description of the allowed syntax.