sqlite按日期选择C＃

Question

Is this the preferred/fastest way to select values after a certain date from a database:

SELECT name, creationDate FROM sometable WHERE date(creationDate) >= date('_date_in_sqlite_format_')

where creationDate is DATETIME DEFAULT CURRENT_TIMESTAMP type and _date_in_sqlite_format_ is '2007-01-01 10:00:00' for example.

Is there a better way that can help sqlite engine process data faster?

The question is theoretical. I am aware that the query is not parameterized and/or follows more optimized programming conventions.

Answer 1

The date() function returns a value in the format yyyy-mm-dd . If you compare against a value that has the same format as the column values, you can make the comparison directly, which would allow optimization by using an index:

... WHERE creationDate >= '2008-01-01 00:00:00'