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# Calling fetchall() would retrieve the rest of the records >>> cursor.fetchall() ... # Using description provides data regarding the query in the cursor >>> cursor.description [('country', 1111, 2147483647, None, None, None, 2), ('region', 12, 2147483647, None, None, None, 0)] Creating a cursor using the with_statement syntax is easy, please take a look at the following example for use with Jython 2.5.1 and beyond. Listing 12-11. with conn.cursor() as c: do_some_work(c) Like connections, you need to ensure the resource is appropriately closed. So you can just do this to follow the shorter examples we will look at: Listing 12-12. >>> c = conn.cursor() >>> # work with cursor As you can see, queries are easy to work with using cursors. In the previous example, we used the fetchall() method to retrieve all of the results of the query. However, there are other options available for cases where all results are not desired including the fetchone() and fetchmany() options. Sometimes it is best to iterate over results of a query in order to work with each record separately. Listing 12-13 iterates over the countries contained within the country table. Listing 12-13. >>> from com.ziclix.python.sql import zxJDBC >>> conn = zxJDBC.connect("jdbc:postgresql:test","postgres","jython25","org.postgresql.Driver") >>> cursor = conn.cursor() >>> cursor.execute("select name from country") >>> while cursor.next(): ... print cursor.fetchone() ... (u'Netherlands Antilles',) (u'Algeria',) (u'Andorra',) ... Often, queries are not hard-coded, and we need the ability to substitute values in the query to select the data that our application requires. Developers also need a way to create dynamic SQL statements at times. Of course, there are multiple ways to perform these feats. The easiest way to substitute variables or create a dynamic query is to simply use string concatenation. After all, the execute() method takes a vb.net gs1 128 Packages matching GS1-128 - NuGet Gallery
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Generate, create EAN 128 in Visual Basic . NET applications; Easy to install & integrate barcode EAN 128 generation library SDK into VB . NET evelopments ... If a title exists, the code creates a new <DVD> element and adds an id attribute: var newDVD:XMLNode = oXML.createElement("DVD"); newDVD.attributes.id = rootNode.childNodes.length + 1; It sets the value of the attribute to one more than the number of <DVD> elements in the XML tree. The next code block creates a new <title> element and uses appendChild() to add the text from the title_txt component: var newDVDTitle:XMLNode = oXML.createElement("title"); newDVDTitle.appendChild(oXML.createTextNode(title_txt.text)); newDVD.appendChild(newDVDTitle); The code repeats this process for the <format> and <genre> nodes: if (format_txt.text.length > 0) { var newDVDFormat:XMLNode = oXML.createElement("format"); newDVDFormat.appendChild(oXML.createTextNode(format_txt.text)); newDVD.appendChild(newDVDFormat); } if (genre_txt.text.length > 0) { var newDVDGenre:XMLNode = oXML.createElement("genre"); newDVDGenre.appendChild(oXML.createTextNode(genre_txt.text)); newDVD.appendChild(newDVDGenre); } Finally, the code appends the <DVD> element to the root node, reloads the List component, and clears the values in the text field: rootNode.appendChild(newDVD); loadList(null); clearTextInputs(); Editing an existing node uses a different block of code that s easier to interpret. First, the code finds the child node index for the selected node so it can select the node again after the update: var selectedNodeIndex:Number = Number(selectedDVDNode.attributes.id)-1; Then it checks whether appropriate text has been entered into the TextField component and changes the nodeValue accordingly: if (title_txt.text.length > 0) { selectedDVDNode.childNodes[0].firstChild.nodeValue = title_txt.text; } if (format_txt.text.length > 0) { selectedDVDNode.childNodes[1].firstChild.nodeValue = format_txt.text; } if (genre_txt.text.length > 0) { selectedDVDNode.childNodes[2].firstChild.nodeValue = genre_txt.text; } barcode add in for word and excel 11.10 free download, birt barcode maximo, birt data matrix, birt code 39, birt ean 128, word ean 13 barcode vb.net gs1 128 .NET GS1 - 128 / EAN - 128 Generator for C#, ASP.NET, VB . NET ...
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VB . NET GS1-128 Generator for .NET class, Data Matrix, PDF417, QRCode, Code128, Code39. string-based query. Listing 12-14 shows how to use string concatenation for dynamically forming a query and also substituting variables. Listing 12-14. String Concatenation for Dynamic Query Formation # # # # Assume that the user selected what results to retrieve from The selected choice is stored that we are interested in all a pull-down menu choice determining the database, either continent or country name. in the selectedChoice variable. Let's also assume continents or countries beginning with the letter "A" Because typing the whole table name can become tiresome and also because in some queries we might need to compare data in more than one row of a table, SQL has the notion of an alias. Have a look at Listing 2-9. vb.net gs1 128 GS1 128 Generator DLL in VB | Free . NET program sample code ...
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I suggest you use Google as there is a lot of information on the topic: http://en. lmgtfy.com/?q=ucc+ ean - 128 +barcode+generator[^]. —SA. Finally, the code calls the loadList() function, passing the index of the selected node: loadList(selectedNodeIndex); The remaining button deletes the selected <DVD> element from the List component: delete_btn.onRelease = function():Void { selectedDVDNode.removeNode(); clearTextInputs(); loadList(null); } It starts by using the removeNode() method to remove the selected <DVD> element from the XML tree. Then it clears the interface and reloads the list. As I mentioned earlier, modifying the content within Flash won t change the external data. You can only update the external data by sending the content to a server-side document for processing. vb.net ean 128 reader Create GS1 - 128 Bar Codes with VB . NET - RasterEdge.com
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