How to Efficiently Extract Date Ranges in PostgreSQL?

Date Range Extraction in PostgreSQL

In PostgreSQL, extracting a list of dates within a specified range is a common task. This article discusses the most effective methods for this purpose.

Generating Sequential Dates

One approach involves the combination of the generate_series() function with date manipulation operators. For instance, the following query retrieves dates between '2012-06-29' and '2012-07-03':

select CURRENT_DATE + i
from generate_series(date '2012-06-29'- CURRENT_DATE,
    date '2012-07-03' - CURRENT_DATE ) i

Alternatively, the query can be simplified using casting:

select i::date from generate_series('2012-06-29',
'2012-07-03', '1 day'::interval) i

The above is the detailed content of How to Efficiently Extract Date Ranges in PostgreSQL?. For more information, please follow other related articles on the PHP Chinese website!