secondo/Optimizer/Subqueries/ExtRelation.examples

Database : berlintest
Restore  : NO

Operator : GROUP
Number   : 1
Signature: ((stream x)) -> (rel x)
Example  : query Orte feed sortby[BevT asc] groupby[BevT; Cnt: fun(g: GROUP) g count] filter[.Cnt > 10] consume
Result   : file


Operator : aggregate
Number   : 1
Signature: (stream(tuple((a1 t1) ... (an tn))) ai((ti ti) -> ti) ti -> ti
Example  : query ten feed aggregate[no; fun(i1: int, i2: int) i1+i2; 0]
Result   : 55


Operator : aggregateB
Number   : 1
Signature: (stream(tuple((a1 t1) ... (an tn))) ai((ti ti) -> ti) ti -> ti
Example  : query no_components(Flaechen feed aggregateB[geoData; fun(r1:region, r2:region) r1 union2 r2; [const region value ()]])
Result   : 139


Operator : avg
Number   : 1
Signature: ((stream (tuple([a1:d1, ..., ai:int, ..., an:dn]))) x ai) -> real
Example  : query Staedte feed avg [Bev]
Result   : 325017.2413793103

Operator : avg
Number   : 2
Signature: ((stream (tuple([a1:d1, ..., ai:real, ..., an:dn]))) x ai) -> real
Example  : query Staedte feed extend[BevR: .Bev * 1.0] avg [BevR]
Result   : 325017.2413793103

Operator : cancel
Number   : 1
Signature: ((stream x) (map x bool)) -> (stream x)
Example  : query Staedte feed cancel [.SName = "Dortmund"] consume
Result   : file


Operator : concat
Number   : 1
Signature: ((stream (tuple (a1:d1 ... an:dn))) (stream (tuple (b1:d1 ... bn:dn)))) -> (stream (tuple (a1:d1 ... an:dn)))
Example  : query ten feed ten feed concat consume
Result   : file


Operator : extend
Number   : 1
Signature: (stream(tuple(x)) x [(a1, (tuple(x) -> d1)) ... (an, (tuple(x) -> dn))] -> stream(tuple(x@[a1:d1, ... , an:dn])))
Example  : query ten feed extend [Mult5: .no * 5, mod2 : .no mod 2] sum[Mult5]
Result   : 275


Operator : extendstream
Number   : 1
Signature: ((stream tuple1) (map tuple1 stream(type))) -> (stream tuple1*tuple2)
Example  : query Trains feed head[1] extendstream[UTrip:  units(.Trip)] count
Result   : 113


Operator : extract
Number   : 1
Signature: ((stream (tuple([a1:d1, ... ,an:dn]))) x ai) -> di
Example  : query no_segments(Flaechen feed filter[.Name = "Hasenheide"] extract[geoData])
Result   : 26


Operator : groupby
Number   : 1
Signature: ((stream (tuple (a1:d1 ... an:dn))) (ai1 ... aik) ((bj1 (fun (rel (tuple (a1:d1 ... an:dn))) (_))) ... (bjl (fun (rel (tuple (a1:d1 ... an:dn))) (_))))) -> (stream (tuple (ai1:di1 ... aik:dik bj1 ... bjl)))
Example  : query Orte feed sortby[BevT asc] groupby[BevT; Cnt: group count] filter[.Cnt > 10] consume
Result   : file


Operator : hashjoin
Number   : 1
Signature: ((stream (tuple ((x1 t1) ... (xn tn)))) (stream (tuple ((y1 d1) ... (ym dm)))) xi yj nbuckets) -> (stream (tuple ((x1 t1) ... (xn tn) (y1 d1) ... (ym dm))))
Example  : query Orte feed {o} plz feed {p} hashjoin[Ort_o, Ort_p, 99997] count
Result   : 10052


Operator : head
Number   : 1
Signature: stream(T) x int -> stream(T)
Example  : query Trains feed head[7] count
Result   : 7

Operator : loopjoin
Number   : 1
Signature: ((stream tuple1) (fun (tuple1 -> stream(tuple2)))) -> (stream tuple1*tuple2)
Example  : query Orte feed {o} loopjoin[plz_Ort plz exactmatch[.Ort_o]] count
Result   : 10052


Operator : loopsel
Number   : 1
Signature: ((stream tuple1) (map tuple1 rel(tuple2))) -> (stream tuple2)
Example  : query Orte feed {o} loopsel[plz_Ort plz exactmatch[.Ort_o]] count
Result   : 10052


Operator : max
Number   : 1
Signature: ((stream (tuple([a1:d1, ... ,an:dn]))) x ai) -> di
Example  : query Staedte feed max[Bev]
Result   : 1859000


Operator : mergediff
Number   : 1
Signature: ((stream (tuple ((x1 t1) ... (xn tn)))) stream (tuple ((x1 t1) ... (xn tn))))) -> (stream (tuple ((x1 t1) ... (xn tn))))
Example  : query thousand feed ten feed mergediff count
Result   : 990


Operator : mergejoin
Number   : 1
Signature: ((stream (tuple ((x1 t1) ... (xn tn)))) (stream (tuple ((y1 d1) ... (ym dm)))) xi yj) -> (stream (tuple ((x1 t1) ... (xn tn) (y1 d1) ... (ym dm))))
Example  : query Orte feed sortby[Ort asc] {o} plz feed sortby[Ort asc] {p} mergejoin[Ort_o, Ort_p] count
Result   : 10052


Operator : mergesec
Number   : 1
Signature: ((stream (tuple ((x1 t1) ... (xn tn)))) stream (tuple ((x1 t1) ... (xn tn))))) -> (stream (tuple ((x1 t1) ... (xn tn))))
Example  : query ten feed thousand feed mergesec count
Result   : 10


Operator : mergeunion
Number   : 1
Signature: ((stream (tuple ((x1 t1) ... (xn tn))))stream (tuple ((x1 t1) ... (xn tn))))) -> (stream (tuple ((x1 t1) ... (xn tn))))
Example  : query plz_Ort plz exactmatch["Hamburg"] sort plz_PLZ plz range[15000, 21000] sort mergeunion count
Result   : 4253


Operator : min
Number   : 1
Signature: ((stream (tuple([a1:d1, ... ,an:dn]))) x ai) -> di
Example  : query Staedte feed min[Bev]
Result   : 100000


Operator : projectextend
Number   : 1
Signature: stream(tuple(T1)) x <attrname-list> x <(attrname2 fun)-list> -> stream(tuple(T2)), attrname-list in T1 and T2 = attrname-list + attrname2-list
Example  : query Orte feed projectextend[Ort, Vorwahl; BevT2: .BevT*2, BevT: (.BevT + 30)] head[1] consume
Result   : ( (rel (tuple ( (Ort string) (Vorwahl string) (BevT2 int) (BevT int)))) ( ("Aachen" "0241" 512 286)))

Operator : projectextendstream
Number   : 1
Signature: ((stream tuple1) (ai1 ... aik) (map tuple1 stream(type))) -> (stream tuple1[ai1 ... aik]*type)
Example  : query Trains feed head[5] projectextendstream[Id, Line, Up; UTrip:  units(.Trip)] consume
Result   : file


Operator : rdup
Number   : 1
Signature: ((stream (tuple([a1:d1, ... ,an:dn])))) -> (stream (tuple([a1:d1, ... ,an:dn])))
Example  : query Orte feed project[BevT] sort rdup count
Result   : 161


Operator : sample
Number   : 1
Signature: (rel x) int real -> (stream x)
Example  : query plz sample[500, 0.0001] count
Result   : 500


Operator : sample
Number   : 2
Signature: (rel x) int real int -> (stream x)
Example  : query plz sample[500, 0.0001, 3] count
Result   : 500


Operator : sort
Number   : 1
Signature: ((stream (tuple([a1:d1, ... ,an:dn])))) -> (stream (tuple([a1:d1, ... ,an:dn])))
Example  : query Staedte feed sort consume
Result   : file


Operator : sortby
Number   : 1
Signature: ((stream (tuple([a1:d1, ... ,an:dn]))) ((xi1 asc/desc) ... (xij asc/desc))) -> (stream (tuple([a1:d1, ... ,an:dn])))
Example  : query Staedte feed sortby[Bev desc] head[3] consume
Result   : file


Operator : sortmergejoin
Number   : 1
Signature: ((stream (tuple ((x1 t1) ... (xn tn)))) (stream (tuple ((y1 d1) ... (ym dm)))) xi yj) -> (stream (tuple ((x1 t1) ... (xn tn) (y1 d1) ... (ym dm))))
Example  : query Orte feed {o} plz feed {p} sortmergejoin[Ort_o, Ort_p] count
Result   : 10052

Operator : smouterjoin
Number   : 1
Signature: ((stream (tuple ((x1 t1) ... (xn tn)))) (stream (tuple ((y1 d1) ... (ym dm)))) xi yj) -> (stream (tuple ((x1 t1) ... (xn tn) (y1 d1) ... (ym dm))))
Example  : query Orte feed {o} plz feed {p} smouterjoin[Ort_o, Ort_p] count
Result   : 41472

Operator : sum
Number   : 1
Signature: ((stream (tuple([a1:d1, ..., ai:int, ..., an:dn]))) x ai) -> int
Example  : query Staedte feed sum[Bev]
Result   : 18851000

Operator : sum
Number   : 2
Signature: ((stream (tuple([a1:d1, ..., ai:real, ..., an:dn]))) x ai) -> real
Example  : query Staedte feed extend[BevR: .Bev * 1.0] sum[BevR];
Result   : 18851000.0


Operator : symmjoin
Number   : 1
Signature: ((stream (tuple (x1 ... xn))) (stream (tuple (y1 ... ym)))) (map (tuple (x1 ... xn)) (tuple (y1 ... ym)) -> bool) -> (stream (tuple (x1 ... xn y1 ... ym)))
Example  : query Flaechen feed {f} WFlaechen feed {w} symmjoin[.geoData_f adjacent ..geoData_w] consume
Result   : file


Operator : symmouterjoin
Number   : 1
Signature: ((stream (tuple (x1 ... xn))) (stream (tuple (y1 ... ym)))) (map (tuple (x1 ... xn)) (tuple (y1 ... ym)) -> bool) -> (stream (tuple (x1 ... xn y1 ... ym)))
Example  : query Flaechen feed {f} WFlaechen feed {w} symmouterjoin[.geoData_f adjacent ..geoData_w] consume
Result   : file


Operator : symmproduct
Number   : 1
Signature: (stream (tuple(X))) (stream (tuple(Y)))  -> (stream (tuple(X*Y))) ))
Example  : query ten feed {a} ten feed {b} symmproduct head[12] consume
Result   : file


Operator : symmproductextend
Number   : 1
Signature: (stream (tuple(X))) (stream (tuple(Y)))  [(z1, (tuple(X) tuple(Y) -> t1)) ... (zj, (tuple(X) tuple(Y) -> tj))]  -> (stream (tuple(X*Y*Z))) ))
Example  : query ten feed {a} ten feed {b} symmproductextend[prod: .no_a * ..no_b] consume
Result   : file


Operator : krdup
Number   : 1
Signature: stream(tuple((a1 t1)(a2 t2)...(an tn))) x ai1 x ai2 x ... -> stream(tuple((a1 t1)...(an tn)))
Example  : query plz feed sortby[Ort] krdup[Ort] count
Result   : 16788


Operator : addcounter
Number   : 1
Signature: stream(tuple((a1 t1)..(an tn))) x id x int -> stream(tuple((a1 t1)...(an tn)(id int)))
Example  : query ten feed addcounter[ Cnt , 1] consume
Result   : file


Operator : var
Number   : 1
Signature: ((stream (tuple([a1:d1, ..., ai:int, ..., an:dn]))) x ai) -> real
Example  : query Staedte feed var[Bev]
Result   : 118775771627.3442


Operator : var
Number   : 2
Signature: ((stream (tuple([a1:d1, ..., ai:real, ..., an:dn]))) x ai) -> real
Example  : query Staedte feed extend[BevR: .Bev * 1.0] var[BevR]
Result   : 118775771627.3442


Operator : stats
Number   : 1
Signature: ((stream (tuple([a1:d1, ..., ai:int, ..., aj: int, ..., an:dn]))) x ai) -> tream(tuple((CountX int) (MinX real) (MaxX real) (SumX real) (AvgX real) (VarX real)(CountY int) (MinY real) (MaxY real) (SumY real) (AvgY real) (VarY real)(Count int) (CountXY int) (CovXY real) (CorrXY real)))
Example  : query ten feed stats[no,no] consume
Result   : ((rel (tuple ((CountX int) (MinX real) (MaxX real) (SumX real) (AvgX real) (VarX real) (CountY int) (MinY real) (MaxY real) (SumY real) (AvgY real) (VarY real) (Count int) (CountXY int) (CovXY real) (CorrXY real)))) ((10 1.0 10.0 55.0 5.5 9.166666666666666 10 1.0 10.0 55.0 5.5 9.166666666666666 10 10 9.166666666666666 1.0)))


Operator : stats
Number   : 2
Signature: ((stream (tuple([a1:d1, ..., ai:real, ..., aj: int, ..., an:dn]))) x ai) -> tream(tuple((CountX int) (MinX real) (MaxX real) (SumX real) (AvgX real) (VarX real)(CountY int) (MinY real) (MaxY real) (SumY real) (AvgY real) (VarY real)(Count int) (CountXY int) (CovXY real) (CorrXY real)))
Example  : query ten feed extend[r: -1.0 * .no] stats[no,r] consume
Result   : ((rel(tuple((CountX int)(MinX real)(MaxX real)(SumX real)(AvgX real)(VarX real)(CountY int)(MinY real)(MaxY real)(SumY real)(AvgY real)(VarY real)(Count int)(CountXY int)(CovXY real)(CorrXY real))))((10 1.0 10.0 55.0 5.5 9.166666666666666 10 -10.0 -1.0 -55.0 -5.5 9.166666666666666 10 10 -9.166666666666666 -1.0)))


Operator : stats
Number   : 3
Signature: ((stream (tuple([a1:d1, ..., ai:real, ..., aj: real, ..., an:dn]))) x ai) -> tream(tuple((CountX int) (MinX real) (MaxX real) (SumX real) (AvgX real) (VarX real)(CountY int) (MinY real) (MaxY real) (SumY real) (AvgY real) (VarY real)(Count int) (CountXY int) (CovXY real) (CorrXY real)))
Example  : query ten feed extend[r1: (1.0 * .no), r2: (10.0/(.no*1.0))] stats[r1,r2] consume
Result   : ((rel (tuple ((CountX int) (MinX real) (MaxX real) (SumX real) (AvgX real) (VarX real) (CountY int) (MinY real) (MaxY real) (SumY real) (AvgY real) (VarY real) (Count int) (CountXY int) (CovXY real) (CorrXY real)))) ((10 1.0  10.0 55.0 5.5 9.166666666666666 10 1.0 10.0 29.28968253968254 2.928968253968254 7.687580309901738 10 10 -6.788139329805995 -0.8086306440033478)))


Operator : stats
Number   : 4
Signature: ((stream (tuple([a1:d1, ..., ai:int, ..., aj: real, ..., an:dn]))) x ai) -> tream(tuple((CountX int) (MinX real) (MaxX real) (SumX real) (AvgX real) (VarX real)(CountY int) (MinY real) (MaxY real) (SumY real) (AvgY real) (VarY real)(Count int) (CountXY int) (CovXY real) (CorrXY real)))
Example  : query ten feed extend[r: -1.0 * .no] stats[r,no] consume
Result   : ((rel (tuple ((CountX int) (MinX real) (MaxX real) (SumX real) (AvgX real) (VarX real) (CountY int) (MinY real) (MaxY real) (SumY real) (AvgY real) (VarY real) (Count int) (CountXY int) (CovXY real) (CorrXY real)))) ((10 -10.0  -1.0 -55.0 -5.5 9.166666666666666 10 1.0 10.0 55.0 5.5 9.166666666666666 10 10 -9.166666666666666 -1.0)))



Operator : ksmallest
Number   : 1
Signature: stream(tuple((a1 t1)...(an tn)(id int))) x int x a_k_1 x ... a_k_m -> stream(tuple(...))
Example  : query (plz feed sortby[Ort] head [10] project[Ort]) (plz feed ksmallest[10;Ort] project[Ort]) mergediff count
Result   : (int 0)

Operator : kbiggest
Number   : 1
Signature: stream(tuple((a1 t1)...(an tn)(id int))) x int x a_k_1 x ... a_k_m -> stream(tuple(...))
Example  : query (plz feed sortby[Ort desc] head [10] project[Ort]) (plz feed kbiggest[10;Ort] project[Ort]) mergediff count
Result   : (int 0)

Operator : printrefs 
Number   : 1
Signature: stream(tuple((a1 t1)..(an tn))) -> stream(tuple((a1 t1)...(an tn)(id int)))
Example  : query ten feed printrefs count;
Result   : (int 10)