sql server - TSQL: Select from set of columns with lowest positive value -

-

उदाहरण स्कीमा: 

  RowID मात्रा ModifiedPrice GroupPrice CustomPrice SalePrice ------- -------------------------------------------------- ------------------- 1 5 20.00 0 15.00 17.00 2 2 14.00 7.00 22.00 0 3 9 10.00 10.00 0 11.00

के आधार पर यह उदाहरण तालिका, मैं सबसे मूल्यवान / सरल तरीके से संभवतः चार * मूल्य कॉलम के बीच न्यूनतम शून्य-शून्य मान चुनने में सक्षम होना चाहूंगा।

उदाहरण आउटपुट: 

  राउड मात्रा अंतराल --------------------------- --- 1 से 5 15.00 2 2 7.00 3 से 9 10.00

अतिरिक्त जानकारी के लिए, डीबी SQL सर्वर 2005 है। 

  SELECT RowId, मात्रा, (SELECT MIN (price)) से (मूल्य संशोधित मूल्य के रूप में चुनें यूनिअस सभी का चयन समूह मूल्य यूनियन सब का चयन करें कस्टमपर्च यूनियन सभी का चयन करें बिक्री मूल्य) qi WHERE मूल्य & gt ; 0) से mytable

यह मामला बयानों का एक समूह की तुलना में अधिक पठनीय है

नोट इस बारे में है, लेकिन है कि । 4 मामला बयान के रूप में के रूप में धीमी गति से बार

यहां परीक्षण स्क्रिप्ट जो पार्स करता है और पैदावार सही परिणाम है:। 

  CREATE TABLE # T_ मूल्य (RowID INT नहीं NULL, मात्रा INT नहीं NULL, ModifiedPrice नहीं NULL नाव, GroupPrice नहीं NULL नाव, CustomPrice नहीं NULL, SalePrice तैर नहीं NULL नाव) #t_prices मान में डालें (1, 5, 20.00, 0, 15.00, 17.00) #t_prices मान में डालें (2, 2, 14.00, 7.00, 22.00, 0) #t_prices मूल्यों (3, 9, 10.00, 10.00, 0, 11.000) का चयन RowId, मात्रा, (चयन मिन (कीमत) से (चयन में डालने ModifiedPrice के रूप में मूल्य यूनिअस सभी का चयन समूह मूल्य यूनियन सभी का चयन करें कस्टमपर्च यूनियन सभी का चयन करें SalePrice) qi जहां कीमत & gt; 0) से #t_prices

Comments

Post a Comment

Popular posts from this blog

c++ - Linux and clipboard -

-
After selecting the copies of the buffer in Linux, after the text, we can click and paste the button between the mouse. I think there is a special buffer for this, I want to use it. Programming Language: C ++ Your Library: Qt Thanks. There is just one more correct answer than Paul Dixon, which answers your needs: / P > QClipboard * clipboard = QApplication :: clipboard (); CastString Selected Text = Clipboard-> Text (QClipboard :: Selection);
Read more

Visual Studio 2005: How to speed up builds when a VSMDI is open? -

-
Using Visual Studio 2005, if I open the test in VSMFI and try to run the tests, then sometimes the projects are ready. However, they run very slow. CPU 99% waste and output window VS Shows things associated with compiling it. Is there any way to fix this? It does not make any sense. It is not necessary to upgrade that we are a viable alternative to those people who have to deal with the legacy code. Did you try to upgrade SP1? I do not know of any specific problem in this area, but this will be the first change I tried to do.
Read more

booting ubuntu from usb using virtualbox -

-
I am trying to install Ubuntu on a USB, the problem is that I do not want to repeat the boot once, I want to keep my windows, but I want to boot Ubuntu using the virtualbox and USB to the Ubuntu Want to use my hard drive, but how? The virtualbox will not recognize USB as a hard drive when installing an ISO In virtualbox, you have to create a virtual hard disk. Make a USB drive and tell the virtual box to install a virtual hard drive that you just created. EDIT: To answer some more questions: In the new Virtual Disk dialog, click the button next to the location field, click on the button Virtual Disk on Flash Drive To access, click the arrow next to Save in the Select File in the window next to Save In, and you can access your flash drive from there. I recommend setting the image to be allocated dynamically, because the size of your flash drive is not available disk space. I name the image, then select that image to install Ubuntu in the Verbill box. The virtualbox will never...
Read more