![]() The newly created table will have the same table structure (e.g., column names, data types, etc.) as the columns in the SELECT query. The columns and data types of the table will be the same as a. Postgres allows us to create a table via the SELECT command for this purpose, the CREATE TABLE statement is used along with an AS clause followed by a SELECT statement. 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). The behavior of temporary tables at the end of a transaction block can be controlled using ON COMMIT. Use CREATE TABLE AS statement to create a new table with data from the specified SELECT query. The PostgreSQL CREATE TABLE AS statement is used to create a table from an existing table by copying the existing tables columns. CREATE TABLE AS creates a table and fills it with data computed by a SELECT command. This is backward-compatible syntax for declaring a table WITHOUT OIDS, creating a table WITH OIDS is not supported anymore. For backward-compatibility the WITH clause for a table can also include OIDS=FALSE to specify that rows of the new table should contain no OIDs (object identifiers), OIDS=TRUE is not supported anymore. ![]() This clause specifies optional storage parameters for the new table see Storage Parameters in the CREATE TABLE documentation for more information. See default_table_access_method for more information. If this option is not specified, the default table access method is chosen for the new table. This optional clause specifies the table access method to use to store the contents for the new table the method needs be an access method of type TABLE. If column names are not provided, they are taken from the output column names of the query. The name (optionally schema-qualified) of the table to be created. ![]() IF NOT EXISTSÄo not throw an error if a relation with the same name already exists simply issue a notice and leave the table unmodified. If specified, the table is created as an unlogged table. If specified, the table is created as a temporary table.
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