mysql - How do I sum the child table? -

-

i've tried query, got wrong result... looked @ many references not find answer.

select a.id, sum(b1.amount) section1, sum(abs(b2.amount)) section2 parent_table inner join child_table b1 on a.id=b1.parent_id inner join child_table b2 on a.id=b2.parent_id b1.bh_status in ('section1') , b2.bh_status in ('section2') group a.id

tables are:

parent_table

id  | customer_namem | date_register ----+----------------+-------------- 1   | customer1      | 2014-20-11    2   | customer2      | 2014-21-11    3   | customer3      | 2014-22-11    4   | customer4      | 2014-23-11    5   | customer5      | 2014-23-11

child_table

id  | ch_key    | ch_value | parent_id  ----+-----------+----------+---------- 1   | deposit   | 100      | 1 2   | deposit   | 500      | 1 3   | withdraw  | 100      | 1 4   | withdraw  | 100      | 1 5   | deposit   | 10       | 2 6   | deposit   | 100      | 2 7   | deposit   | 50       | 3 8   | deposit   | 50       | 3 9   | withdraw  | 10       | 3 10  | deposit   | 50       | 4 11  | withdraw  | 50       | 4 12  | withdraw  | 150      | 5

i want display this:

id  | customer_namem | deposit | withdtaw | date_register 1   | customer1      | 600     | 200      | 2014-20-11   2   | customer2      | 110     | 0        | 2014-20-11   3   | customer3      | 100     | 10       | 2014-20-11   4   | customer4      | 50      | 50       | 2014-20-11   5   | customer5      | 0       | 150      | 2014-20-11

you have use case, this:

select    a.id, a.customer_namem,    sum(case when ch_key = "deposit" ch_value else 0 end) deposit,   sum(case when ch_key = "withdraw" ch_value else 0 end) withdraw,   a.date_register parent_table inner join child_table b on a.id=b.parent_id group a.id

working demo: http://sqlfiddle.com/#!2/01ad95/1


Comments

Post a Comment

Popular posts from this blog

matlab - "Contour not rendered for non-finite ZData" -

-
i'm trying plot frequency characteristic equation using ezplot, matlab gives following warning, "contour not rendered non-finite zdata". have used command plot frequency equations warning , plot display empty , not change axis range well. can please help. appreciated. here's code i'm using. % transfer matrix case-i, thin rotor clear all; clc; ei = 1626; l = 0.15; m = 0.44108; = 2.178*10^-4; i_p = 2.205*10^-5; itr = 0.24; i_pr = 0.479; syms p n; f = [1 l*1i l^2/(2*ei)*1i l^3/(6*ei); 0 1 l/ei -l^2/(2*ei)*1i; 0 0 1 -l*1i; 0 0 0 l]; p = [ 1 0 0 0; 0 1 0 0; 0 -it*p^2+i_p*n*p 1 0; -m*p^2 0 0 1]; p_r = [1 0 0 0; 0 1 0 0; 0 -itr*p^2+i_pr*n*p 1 0; -m*p^2 0 0 1]; = f*p*f*p*f*p*f; b = p_r*f*p*f*p*f; r = a(1,2)/a(1,4); a12_p = 0; a22_p = a(2,2)-r*a(2,4); a32_p = a(3,2)-r*a(3,4); a42_p = a(4,2)-r*a(4,4); ap(2,2) = a22_p; ap(3,2) = a32_p; ap(4,2) = a42_p; ap(4,4) = 1; c = b*ap; m = [c(3,2) c(3,4); c(4,2) c(4,...
Read more

delphi - Indy UDP Read Contents of Adata -

-
i using indy udp server read string of data. however, not know how work adata parameter. can around converting binary using bytetobin function below , convert hex using bintohex1 . feel stupid , works slow. know how can directly results without 2 conversions? thanks!! here codes: procedure tform1.idudpserver1udpread(athread: tidudplistenerthread; const adata: tidbytes; abinding: tidsockethandle); var buf: tidbytes; buffer: string; data_received: string; begin if bytestostring(adata) <> 'hello' begin buffer := hextostring('00'); setlength(buf, length(buffer)); copytidstring(buffer, buf, 0); abinding.sendto(abinding.peerip, abinding.peerport, buf); data_received := bintohex1(bytetobin(adata[1]) + bytetobin(adata[2]) + bytetobin(adata[3]) + bytetobin(adata[4]) + bytetobin(adata[5]) + bytetobin(adata[6]) + bytetobin(adata[7]) + bytetobin(adata[8]) + bytetobin(adata[9]) + bytetobin(adata[10]) + bytetobin(adata[11...
Read more

javascript - Any ideas when Firefox is likely to implement lengthAdjust and textLength? -

-
any ideas when firefox implement lengthadjust andtextlength?..... working svg application. lengthadjust , textlength working fine in chrome not working in fire fox . <svg viewbox = "0 0 500 300" version = "1.1"> <defs> <path id="s3" d="m 10,90 q 100,15 200,70" /> </defs> <g> <text font-size = "20"> <textpath xlink:href="#s3" textlength="205"> short text</textpath> </text> <use xlink:href="#s3" fill="none" stroke="black" stroke-width="1"/> </g> </svg> this implemented in firefox text elements (not textpath or tspan) in case that's ok though can move attribute text element. <svg viewbox = "0 0 500 300" version = "1.1"> <defs> ...
Read more