SELECT INTO
大纲
[ WITH [ RECURSIVE ] with_query [, ...] ]
SELECT [ ALL | DISTINCT [ ON ( expression [, ...] ) ] ]
* | expression [ [ AS ] output_name ] [, ...]
INTO [ TEMPORARY | TEMP | UNLOGGED ] [ TABLE ] new_table
[ FROM from_item [, ...] ]
[ WHERE condition ]
[ GROUP BY expression [, ...] ]
[ HAVING condition [, ...] ]
[ WINDOW window_name AS ( window_definition ) [, ...] ]
[ { UNION | INTERSECT | EXCEPT } [ ALL | DISTINCT ] select ]
[ ORDER BY expression [ ASC | DESC | USING operator ] [ NULLS { FIRST | LAST } ] [, ...] ]
[ LIMIT { count | ALL } ]
[ OFFSET start [ ROW | ROWS ] ]
[ FETCH { FIRST | NEXT } [ count ] { ROW | ROWS } ONLY ]
[ FOR { UPDATE | SHARE } [ OF table_name [, ...] ] [ NOWAIT ] [...] ]
参数
- TEMPORARY or TEMP
-
如果被指定，该表被创建为一个临时表。详见 CREATE TABLE。
- UNLOGGED
-
如果被指定，该表被创建为一个不做日志的表。详见 CREATE TABLE。
- new_table
-
要创建的表的名字（可以是模式限定的）。
所有其他参数在SELECT中有详细描述。
注解
CREATE TABLE AS在功能上与 SELECT INTO相似。CREATE TABLE AS 是被推荐的语法，因为这种形式的SELECT INTO在ECPG 或PL/pgSQL中不可用，因为它们对 INTO子句的解释不同。此外， CREATE TABLE AS提供的功能是 SELECT INTO的超集。
要为SELECT INTO创建的表增加 OID， 启用default_with_oids配置变量。 CREATE TABLE AS可以使用 WITH OIDS子句。
示例
创建一个只由来自films的最近项构成的 新表films_recent：
SELECT * INTO films_recent FROM films WHERE date_prod >= '2002-01-01';