sql server 2005 - Self join/update of table with data in same table -


due combining old , new system data in table have list of data this:

work no    work name =========  ========= 123456     james 123456     james, (123456)

and want update to:

work_no    work_name =========  ========= 123456     james 123456     james

i tried building update statement, wasn't confident in ran equivalent select statement see returned , seems running in infinite loop (there's 200k records , when stopped it @ somewhere in 2 million returned!) although returning @ start looked fine seemed duplicating or something:

update c1 set c1.work_name = c.work_name table c1 inner join table c on c1.work_no = c.work_no  charindex(',',c1.work_name) > 0

only got experience doing simplest update statements - bit stuck 1 if suggest doing wrong , best way rectify it?

thanks

andrew

do have index built on work_no? did try:

update #table set work_name = (select top 1 c.work_name #table c #table.work_no = c.work_no , charindex(',',c.work_name) = 0) charindex(',',c.work_name) > 0

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

node.js - Getting the socket id,user id pair of a logged in user(s) -

i have web application done using node js , in it,i have authentication system requires users log in before can access pages. have 2 pages,the homepage , updates page. from read docs,a new socket id issued when user opens tab in browser. me being admin,i know socket id of logged in user , more so,the socket id,logged in user id pair logged in users. what method can use socket id,logged in user id pair make sure broadcast realtime info users online?.
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