For my enlightenment, why use LATERAL here? I get the same result with a simple CROSS JOIN (though overall I like the clever solution).
Cheers, Steve On Thu, Feb 16, 2017 at 12:11 AM, Alessandro Baggi < alessandro.ba...@gmail.com> wrote: > Il 15/02/2017 19:11, Alessandro Baggi ha scritto: > >> Il 14/02/2017 21:51, Merlin Moncure ha scritto: >> >>> On Tue, Feb 14, 2017 at 12:36 PM, Merlin Moncure <mmonc...@gmail.com> >>> wrote: >>> >>>> On Tue, Feb 14, 2017 at 12:04 PM, Alessandro Baggi >>>> <alessandro.ba...@gmail.com> wrote: >>>> >>>>> Hi list, >>>>> sorry for my english, I will try to example as well. I've a query >>>>> that joins >>>>> multiple tables and return a result like: >>>>> >>>>> id,customers,phone,code,number >>>>> 1 , aaaaaaaa,33333,123 , 2 >>>>> 2 , aassdsds,33322,211 , 1 >>>>> 3 , oooooooo,21221,221 , 1 >>>>> >>>>> >>>>> I need, where "number" field is > 1, to duplicate the row * N(number >>>>> field >>>>> value) with a result like this: >>>>> >>>>> id,customers,phone,code,number >>>>> 1 , aaaaaaaa,33333,123 , 2 >>>>> 1 , aaaaaaaa,33333,123 , 2 >>>>> 2 , aassdsds,33322,211 , 1 >>>>> 3 , oooooooo,21221,221 , 1 >>>>> >>>>> How I can accomplish to this problem? >>>>> >>>> >>>> SELECT * FROM foo CROSS JOIN LATERAL (1,number); >>>> >>>> :-D >>>> >>> >>> oops -- copy/paste error >>> >>> SELECT * FROM foo CROSS JOIN LATERAL generate_series(1,number); >>> >>> merlin >>> . >>> >>> Hi Merlin, >> I've tried your suggested code and with cross join and generate_series I >> can generate multiple row. There is a way to put as second args a column >> values? I've tried to put "table.number" column values but I got >> "generate_series() does not exists". Inserting a simple int like 5 I get >> 5 results for each row. >> >> I've searched on google but can't find a valid example. >> >> >> >> Thanks in advance. >> >> >> Hi Merlin, > I've solved my problem (passing column as number) using a cast > generate_series(1,table.number::int) > > thanks to all for answart. > > SOLVED > > > -- > Sent via pgsql-general mailing list (pgsql-general@postgresql.org) > To make changes to your subscription: > http://www.postgresql.org/mailpref/pgsql-general >
