在PostgreSQL中生成n行NULL

Question

我有一个看起来像这样的表:

id, integer, Primary Key, not null
name, character varying
created, timestamp without timezone, not null, default: now()

我想生成n行,其中NULL为名称字段.

我知道我能做到:

INSERT INTO
  employee (name)
VALUES
  (NULL),
  (NULL)...

但我更喜欢这样做:

INSERT INTO
  employee (name)
SELECT
  NULL
FROM
  dummy_table_with_n_rows

我可以选择n.

Answer 1

INSERT INTO
  employee (name)
SELECT
  NULL 
FROM
  generate_series(1,10000) i;