mysql - How to use case statement in a union -


below part of script. 

select a. itemcode, sum(b.quantity) 'y1qty',      isnull(null,0) 'yr2qty', sum(c.amt) 'yr1amt'      isnull(null,0) 'yr2amt', abc left join def b on a.itemcode = b.itemcode group a. itemcode  union  select  a1. itemcode, isnull(null,0) 'yr1qty',     sum(b1.quantity) 'yr2qty', isnull(null,0) 'yr1amt',     sum(c.amt) 'yr2amt'  abc a1 left join def b1 on a1.itemcode = b1.itemcode group a1.itemcode

table a: sample output (based on query above)

itemcode     y1qty  yr2qty   yr1amt      yr2amt item 001     150      0       200.00       0 item 002      0      300        0         150.00 item 003      0      50         0         100.00 item 004     20      0        150.00       0

i want insert case statement wherein logic this: if y1qty = 0 , yr2qty = 0 blah blah.. if y1qty = 0 , y2qty > 0 blah blah.. 'diff'

and aiming achieve result:

table b:  itemcode     y1qty  yr2qty   diff      yr1amt      yr2amt item 001     150      0         0        200.00       0 item 002      0      300       100        0         150.00 item 003      0      50        100        0         100.00 item 004     20      0           0      150.00       0  item 005     20      30       1000      100.00      200.00

you need wrap query subquery , following:

select    itemcode,    y1qty,    yr2qty,    case when y1qty = 0 , yr2qty = 0 ... when ... ... else ... end diff,   yr1amt,   yr2amt (   select a. itemcode, sum(b.quantity) 'y1qty',        isnull(null,0) 'yr2qty', sum(c.amt) 'yr1amt'        isnull(null,0) 'yr2amt',   abc   left join def b on a.itemcode = b.itemcode   group a. itemcode    union    select  a1. itemcode, isnull(null,0) 'yr1qty',       sum(b1.quantity) 'yr2qty', isnull(null,0) 'yr1amt',       sum(c.amt) 'yr2amt'    abc a1   left join def b1 on a1.itemcode = b1.itemcode   group a1.itemcode ) t

Comments

Post a Comment

Popular posts from this blog

jquery - How can I dynamically add a browser tab? -

since using iframes house external pages are, accounts "not preferred method" , disallowed sites (flickr, one), want dynamically generate browser tabs. e.g., when user submits form, want dynamically generate tab on browser in response submitted. e.g., might want add new tab url like: http://www.bigsurgarrapata.com/contact how in jquery? you want form target attribute action attribute. http://www.w3schools.com/tags/att_form_target.asp browsers have ultimate control on result of target attribute open new tab value of _blank. <form action="contact_submit.php" target="_blank" method="post">
Read more

keyboard - C++ GetAsyncKeyState alternative -

i using windows.h library's getasynckeystate function define key pushed on keyboard . here program returns int value of pushed key example. #include <iostream> #include <windows.h> using namespace std; int main (){ char i; for(i=8;i<190;i++){ if(getasynckeystate(i)== -32767){ cout<<int (i)<<endl; } } return 0; } but trying make opengl simple game , function appeared slow . there function not need cycle 180 times , if statement . thanks you're trying make opengl game, you're going use glfw. if that's case can away using glfwgetkey() such: if (glfwgetkey(glfw_key_up) == glfw_press) {...} if (glfwgetkey(glfw_key_down) == glfw_press) {...} that method nicely explained in tutorial 6 opengl-tutorial.org . should start first tutorial of beginners tutorials , later intermediate tutorials . if you're going make win32 window can listen wm_keydown or wm_keyup messages , virtua...
Read more

android - java.net.UnknownHostException(Unable to resolve host “URL”: No address associated with hostname) -

i developing app testing asp.net webservice in android.for simple webservice adding 2 numbers used.where numbers passed parameters.the result in dialogue.the webserver works in local. when application runs following result exception.i provided internet permission in manifest. java.net.unknownhostexception(unable resolve host “ http://url.com/ ”: no address associated hostname) my code given below main activity public static string rslt=""; /** called when activity first created. */ @override public void oncreate(bundle savedinstancestate) { super.oncreate(savedinstancestate); setcontentview(r.layout.activity_main); button b1=(button)findviewbyid(r.id.button1); final alertdialog ad=new alertdialog.builder(this).create(); b1.setonclicklistener(new onclicklistener() { @override public void onclick(view arg0) { // todo auto-generated method stub try { ...
Read more