SQL - Check table for new rows? -

-

मेरे पास दो टेबल हैं, उदाहरण के लिए: 

  तालिका A तालिका बी ==== === ======= नाम | रंग का नाम | रंग ---------------------- ---------------------- मिकी माउस | लाल मिकी माउस | लाल डोनाल्ड डक | हरी डोनाल्ड डक | ब्लू डोनाल्ड डक | नीली मिन्नी | लाल नासमझ | ब्लैक मिन्नी | लाल

तालिका ए मेरी स्रोत तालिका है और बी गंतव्य तालिका है अब मुझे एक क्वेरी की आवश्यकता है जो तालिका में सभी अलग-अलग (अतिरिक्त) पंक्तियों को पाता है। अ सार तालिका B उन पंक्तियों के साथ अद्यतन किया जा सकता है। इसलिए मुझे एक क्वेरी की आवश्यकता है जो मुझे तालिका ए से निम्न पंक्तियां पाती है: 

  नाम | रंग ---------------------- डोनाल्ड डक | ग्रीन नासमझ | काला

ऐसी एक क्वेरी के लिए एक अच्छा तरीका क्या है? यह जितना संभव हो उतना कुशल होना चाहिए (बहुत से जुड़ने से बचें) किसी भी मदद के लिए धन्यवाद!

मैं किसी मौजूदा संरचना का उपयोग नहीं करूंगा। 

 < कोड> सेलेक्ट नाम, रंग से जहां किसी तालिका में मौजूद नहीं है (जहां से टेबलबैक का चयन करें TableA.Name = TableB.Name और TableA.Color = TableB.Color)

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

delphi - Mouseover hint for TChart series value -

-
I am using a TChart in Delphi 7, and I want to display charts sometime. I am using the following code to set the chain value to a database query: chart1.FreeAllSeries; Chart1.SeriesList.Clear; Chart1.AddSeries (TBarSeries.Create (self)); TBarSeries (chart1.Series [0]) BarStyle :. = BsRectGradient; Stop starting with Query 1; Executed; While EOF does not start chart1.Series [0]. Add (field 'flags' ('sum_actual_days'), Field Astrstring ('contract_no')); the upcoming; End; End; Each time (value) is now showing both the label below the bar and in a yellow rectangle above the bar. Rather than repeating the amount of label twice, I have some additional information from the query that I would like to show above the bar rather than the label (or, preferably, as a mouseover signal). Can it be done with TChart? And how ...? This can be done with a TChart using the onMouseMeave event of the chart. Something like this should start with you: Process TForm...
Read more

How to Create Master-Details view using Asp.Net MVC framework -

-
I am evaluating the Asp.Net MVC framework for my enterprise application for the past few weeks. The one thing I'm trying to achieve is the master-detail view. As it is very clear that there is no vivestate and there is no postback. For example, now I am using the product, customer, order and order details table from the Northwind database and I am using the especial MVC. I want to make master-detail view. Basically I do not have to have separate ideas (pages of other words) for order and order details. View order and order details should be included. How should I design my controller and see how to get this functionality. Thanks & amp; Regards, Burhanuddin Ghee You want to write a domain-specific view-model class Adds an order and details from its order (I'm assuming that order-> order details are 1-> n relation, not familiar with Northwind): public class command view model (Public order order); Set;} public inenemable & lt; Order deletate & gt; ...
Read more