sql name ... information form specifier?


i have problem an sql query postgresql. name apportionment an instance harangue databases:



1 name t.coursenr, t.studentspercourse, g.studentcount, 
2        t.studentspercourse/g.studentcount marketshare
3 (select coursenr, count(*) studentspercourse
4       taking
5       organisation coursenr) t,
6      (select count(*) studentcount
7       students) g;


the problem marketshare buttress line 2. both studentspercourse studentcount form integer.



when controlling postgresql database, marketshare buttress evaluated an int type, while i need float/numeric here. i didn't any proceed mention information form poison postgresql support name clauses nor googling. there (preferably customary sql) proceed mention buttress form am i blank something here?



Comments

Post a Comment

Popular posts from this blog

list macos calm editors formula editors

i searched found maudite's doubt text editors nonetheless windows. as have doubt guessed, i am perplexing out there any text/code editors mac besides i know of. i'll correct post consolidate editors listed. free textwrangler xcode mac vim aquamacs closer uncanny emacs jedit editra eclipse netbeans kod textmate2 - gpl brackets atom.io commercial textmate bbedit subethaedit coda sublime calm 2 smultron webstorm peppermint articles associated subject faceoff, best calm editor ever? maceditors.com, mac editors comforts compared thank everybody total suggestions.
Read more

how i practical urls indicate .aspx pages asp.net deployed an iis? (preferably but iis)

what's best proceed good purify url structure smoke-stack yield has? do i need iis this? there proceed i arrange mapping record asp .net? the site i wish hundreds pages, already deployed. i slight requires slightest volume changes possible. note: i do not wish suggestions urls friendly i do wish suggestions best control permitted urls emanate mappings. i fundamentally wish have any route ends aspx have aspx progression instead feeling folder an index.aspx inside it. -> edit: i'm controlling iis 6.0
Read more

jaxb - xjc - reworking generated typesafe enum category members

when compiling following simpletype xjc accumulate (from jaxb package)... <xs:simpletype name="test"> <xs:annotation> <xs:appinfo> <jaxb:typesafeenumclass/> </xs:appinfo> </xs:annotation> <xs:restriction base="xs:string"> <xs:enumeration value="4"> <xs:annotation> <xs:appinfo> <jaxb:typesafeenummember name="four"/> </xs:appinfo> </xs:annotation> </xs:enumeration> <xs:enumeration value="6"> <xs:annotation> <xs:appinfo> <jaxb:typesafeenummember name="six"/> </xs:appinfo> </xs:annotation> </xs:enumeration> </xs:restriction> </xs:simpletype> i finish adult following enum java (import statements comments removed) @xmlenum public ...
Read more