![]() We've only look at intervals of '1 day' so far, but we can do whatever Subquery, we are able to filter what we are looking at, in this case, just We repurposed our previous query for the year 2020. ![]() > select * from ( select generate_series ( ( date '' ):: timestamp, ( date '' ):: timestamp, interval '1 day' ) ) as twenty_twenty ( d ) where date_part ( 'month', twenty_twenty. PostgreSQL understands the calendar, so you can even count on proper Take note that we have to satisfy the function signature, so we create aĭate using date and then coerce it to a timestamp. Let's try it out by generating the series of days in 2017. What amount of spacing to put between each timestamp when generating the ![]() Upper bound timestamps of the series to be generated. Notice that each requires three arguments. The last two records are what we are looking for - support for timestamps > \ df generate_series () List of functions Schema | Name | Result data type | Argument data types | Type -+-+-+-+- pg_catalog | generate_series | SETOF bigint | bigint, bigint | normal pg_catalog | generate_series | SETOF bigint | bigint, bigint, bigint | normal pg_catalog | generate_series | SETOF integer | integer, integer | normal pg_catalog | generate_series | SETOF integer | integer, integer, integer | normal pg_catalog | generate_series | SETOF numeric | numeric, numeric | normal pg_catalog | generate_series | SETOF numeric | numeric, numeric, numeric | normal pg_catalog | generate_series | SETOF timestamp with time zone | timestamp with time zone, timestamp with time zone, interval | normal pg_catalog | generate_series | SETOF timestamp without time zone | timestamp without time zone, timestamp without time zone, interval | normal Signature, or we could pull it up in psql using \df. We could take a peak at the online documentation to see the function I don't see this used often, so let's take a look at it. I used it to generate a series of integers from 1 to 100.Īs of PostgreSQL 8.4, support for generating series of timestamp data wasĪdded. Instance, in my post, Understanding Common Table Expressions with This function is often used to generate series of numeric data. PostgreSQL has shipped with the generate_series() function for quite some
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