generate_series

SELECT * FROM TABLE(
    generate_series(
        <series_start>,
        <series_end>
        [, <increment>]
    )

heavysql> select * from table(generate_series(2, 10, 2)); 
series 
2 
4 
6 
8 
10 
5 rows returned.

heavysql> select * from table(generate_series(8, -4, -3)); 
series 
8 
5 
2 
-1 
-4
5 rows returned.

SELECT * FROM TABLE(
    generate_series(
        <series_start>,
        <series_end>,
        <series_step>
    )
)

SELECT
  generate_series AS ts
FROM
  TABLE(
    generate_series(
      TIMESTAMP(0) '2021-01-01 00:00:00',
      TIMESTAMP(0) '2021-09-04 00:00:00',
      INTERVAL '1' MONTH
    )
  )
  ORDER BY ts;
  
ts
2021-01-01 00:00:00.000000000
2021-02-01 00:00:00.000000000
2021-03-01 00:00:00.000000000
2021-04-01 00:00:00.000000000
2021-05-01 00:00:00.000000000
2021-06-01 00:00:00.000000000
2021-07-01 00:00:00.000000000
2021-08-01 00:00:00.000000000
2021-09-01 00:00:00.000000000