Hi!
I’m trying to find a way to do this, so, to draw a picture for you, let me say:
I’ve got a column - text type- containing alpha-numeric data (basically a piece of info and sizes)
“COL.050,00-025,00-08,0”
“COL.050,00-040,00-10,0 PUR”
“COL.055,00-040,00-12,0 PUR”
“COL.050,80-038,10-09,5”
“COL.070,00-060,00-10,00 XXX”
“RASC.035,00-045,00-07,0/10,0”
from wich I like to select records containing a number from a int range-number
kind of…
“select * from db where alphanumeric ~* numrange(40.0, 50.0)”
returning
“COL.050,00-025,00-08,0”
“COL.050,00-040,00-10,0 PUR”
“COL.055,00-040,00-12,0 PUR”
“RASC.035,00-045,00-07,0/10,0”
“select * from db where alphanumeric ~* numrange(30.0, 39.0)”
returning
“COL.050,80-038,10-09,5”
“RASC.035,00-045,00-07,0/10,0”
“select * from db where alphanumeric ~* numrange(60.0, 65.0)”
returning
“COL.070,00-060,00-10,00 XXX”
My idea is to do this on PostgreSQL as far as my target device is a mobile (so I think it will do calculations on my server faster than on an external device and table contains about 45000 records)
After a while search on internet I guess the calculations should involve numrange or generate_series, but I don’t arrive to use returned values on this string column.
By the way, I’m newer on PgSQL, so my knowledge is very basic.
Thank you
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