sql - How to query a table where data will be use as column name/field name -

-

मेरे पास यह तालिका है: 

  AMTo PMFROM PMTo से दिन AMFrom ----- -------------------------------------------------- ------------- सोमवार 09:00 अशक्त नल 06:00 मंगलवार 09:00 नल नल 06:00 बुधवार 09:00 नल नल 06:00 गुरुवार 09:00 नल नल 06:00 शुक्रवार 09:00 नल नल 06:00 शनिवार 08:00 नल नल 05:00 शुक्रवार 08:00 नल नल 06:00   
 इस तरह की आउटपुट के लिए मैं इस तालिका को कैसे पूछ सकता हूँ:  <पूर्व> <कोड> सोमवार सोमवार से सोमवार सोमवार से सोमवार तक पीएम टू ------------------------------------ -------------------------------------- 09:00 नल नल 06:00   
 आउटपुट में  मंगलवारएमएमएफआरएम, मंगलवार पीएमटीओ, .......... रविवार पीएम भी शामिल है।    
 
 
 मैंने संक्षेप के लिए स्कीमा को सरलीकृत किया है लेकिन इसे आपके स्कीमा के साथ भी लागू किया जा सकता है:  
  टेबल टीबीएल (दिन के वार्चार (20) बनाओ, Amfrom int, amto int); टीबीएल मूल्यों में डालें ('सोमवार', 9, शून्य); टीबीएल मूल्यों में डालें ('मंगलवार', 10, 11); MondayAmFrom, MondayAmTo, TuesdayAmFrom, TuesdayAmTo चयन से (amto MondayAmTo रूप amfrom MondayAmFrom के रूप में चुनते हैं, तो tbl से जहां दिन = 'सोमवार') मोन के रूप में, (amfrom TuesdayAmFrom रूप amto TuesdayAmTo रूप tbl से चयन करें, जहां दिन = 'मंगलवार को) मंगल के रूप में ;   
 यह आउटपुट है:  
  MONDAYAMFROM MONDAYAMTO TUESDAYAMFROM TUESDAYAMTO 9 (रिक्त) 10 11   
 हम subqueries बनाते हैं प्रत्येक दिन का चयन तब हम उन्हें मुख्य टेबल में शामिल करते हैं। हफ्ते के दिनों को जाना जाने की जरूरत है जो आपके उदाहरण में मामला है। उनमें से केवल 7 हैं।  
  मामले का चयन करें जब तब  यहां काम नहीं करेगा क्योंकि यह 7 पंक्तियां बनाएगा और उन्हें समूह बनाना मुश्किल होगा। समूह के साथ समस्या ये है कि आपकी स्कीमा नाक का समर्थन करती है।

Comments

Post a Comment

Popular posts from this blog

c++ - Cmake produces file extensions in static library archives -

-
I have recently switched to autotools to cement, since the limiter cross platform is better for development and what I saw When I build a stable library of my C ++ code, all the files inside .cpp.o is a suffix ar income tax PA8 / libgenericTZR.a genericTZR.cpp.o I have seen other libraries made by other tools and they do not do it, I'm not sure this is the realm And there is a bad thing, but how can I create static libraries without cpp file extension? This is my CMake file add_executable (PA8 ISP_Charges.cpp genericTZR.cpp genericTZR.h) set (LIBSRC genericTZR.c genericTZR.h) add_library (genericTZR shared $ {LIBSRC}) add_library (genericTZR shared $$ TARGET_OBJECTS: myObjects & gt;) install add_library (Generic TZR-static static $ {LIBSRC}) set_target_properties (Generic TZR-Static Properties OUTPUT_NAME $ install (TARGETS PA8 DESTINATION BIN) TARGETS GENICTZR GENERICTZR-STATIC DESTINATION lib) Installed (files "$ {PROJECT_BINARY_DIR} /PA8/genericTZR.h...
Read more

c# - Roxy file manager in MVC doesn't accept session path -

-
Hi friends I've downloaded a file manager for my MVC project. So I added to my project and everything works fine but everyone can use this product I mean everyone can type urls and upload files to my host !!!! This filemanager has a Jason config file, as you can see here: {"FILES_ROOT": "Fileman / Upload "," "File_type_kenny": "file", "THUMBS_VIEW_WIDTH": "140", "THUMBS_VIEW_HEIGHT": "120", "PREVIEW_THUMB_WIDTH": "300", "PREVIEW_THUMB_HEIGHT": "200", "MAX_IMAGE_WIDTH": "0" "ASP_net / Main.Shex? A = Created", " Dealederer ":" ASP_net / MAN.assx "ADELEDED IR "," MOVEDIR ":" ASP_net / Main.Shex? A = MoVEDIR "," Copdier ":" ASP_net / Main.Shex? A = Copdier "," Richie Dar ":" ASP_net / Main ASP_net / main.hex? A = Upload "," Downlo...
Read more

c# - XML - Serialize class - Some questions -

-
I have the idea of ​​serializing the properties of a class in an XML-file and then uploading this file to the server The reason for this is that I want to download this file again and read the serialized content. Then this kind of structure: file exists (myfile.xml) - & gt; Serialize the file in data from class (myclass.cs) - & gt; Upload file. Now the content may look something like this: Now the problem is, I do not know how to walk. I want the new data to be serialed in the next way, but it should be linked to that XML-file, not a new one. So I download this file and then I serialize the new data as an attachment so that it will look like this: And it should be repeated many times as I want: download file, serial new data and attach it together, then upload it again. Now, the second issue is, I want to read it. I also use XML-class for this. For the type of ultimate type, the data should be serialized, I set the square in which the assets are. But now,...
Read more