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  • Create a trigger that updates a column on one table when a column in another table is updated

    - by GigaPr
    Hi, i have two tables Order(id, date, note) and Delivery(Id, Note, Date) I want to create a trigger that updates the date in Delivery when the date is updated in Order. I was thinking to do something like CREATE OR REPLACE TRIGGER your_trigger_name BEFORE UPDATE ON Order DECLARE BEGIN UPDATE Delivery set date = ??? where id = ??? END; How do I get the date and row id? thanks

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  • How do I restrict accepting only one type in my generic method?

    - by kunjaan
    I have a generic function foo, which accepts any type and prints them out. public static <T> T foo(T... arg) { List<T> foo = Arrays.asList(arg); for (T t : foo) { System.out.println(t); } return null; } How do I make sure that the arguments received are of only 1 type. For example, {1,'a',3} should be invalid. It should either be all numbers or all characters.

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  • WPF Style Triggers: can I apply the one style for a variety of Properties?

    - by Matt H.
    It seems like there has to be a way to do this: I am applying an ItemContainerStyle in my Listbox, based on two property triggers. As you can see, I'm using the exact same set of trigger enter/exit actions, simply applied on two different properties. Is there something equivalent to a <Trigger Property="prop1" OR Property="prop2" ??? (Obviously wouldn't look like that, but that probably gets the point across.) <Style x:Key="ListBoxItemStyle" TargetType="ListBoxItem"> <Style.Triggers> <Trigger Property="IsKeyboardFocusWithin" Value="True"> <Trigger.EnterActions> <BeginStoryboard> <Storyboard> <DoubleAnimation Storyboard.TargetProperty="Height" To="50" Duration="0:0:.3"></DoubleAnimation> </Storyboard> </BeginStoryboard> </Trigger.EnterActions> <Trigger.ExitActions> <BeginStoryboard> <Storyboard> <DoubleAnimation Storyboard.TargetProperty="Height" To="25" Duration="0:0:.3" /> </Storyboard> </BeginStoryboard> </Trigger.ExitActions> </Trigger> </Style.Triggers> </Style> <Style x:Key="ListBoxItemStyle" TargetType="ListBoxItem"> <Style.Triggers> <Trigger Property="IsMouseOver" Value="True"> <Trigger.EnterActions> <BeginStoryboard> <Storyboard> <DoubleAnimation Storyboard.TargetProperty="Height" To="50" Duration="0:0:.3"></DoubleAnimation> </Storyboard> </BeginStoryboard> </Trigger.EnterActions> <Trigger.ExitActions> <BeginStoryboard> <Storyboard> <DoubleAnimation Storyboard.TargetProperty="Height" To="25" Duration="0:0:.3" /> </Storyboard> </BeginStoryboard> </Trigger.ExitActions> </Trigger> </Style.Triggers> </Style>

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  • MySQL: How to separate a name field in one table into firstname / lastname in two separate tables?

    - by Eileen
    I have a drupal database where the node table is full of profiles. The field node.title is "Firstname Lastname". I want to separate the names so that node.title = "Firstname", and over in another table entirely, content_type_profile.field_lastname_value = "Lastname". The entries in the two tables can be joined on the field nid. I'd love to run a SQL command to do this, and I am fine with taking the naive approach that the first word is the first name, and everything else in the field is last name -- it will mean a few manual corrections down the line, but that's much better than doing it all by hand in the first place. (I read this question and surely the answer lies in there but I am not that SQL-savvy and am not sure how to make it work for my database.) Thanks!

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  • How does one programmatically download files from the web?

    - by ytrp
    How are files downloaded from servers in programming languages like C? I understand higher level languages have magic functions like "download_file_from_url()" but they don't help me understand what is actually going on. I'm a little familiar with sockets but network programming in general is still a black box to me. Thanks for any help.

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  • Lua : How to check if one of the values associated with the specified key of a table is nil, from ap

    - by felace
    In lua, it's legal to do this : table={} bar if(table[key]==nil) foo However, using C API, I couldn't find way to check if there's a nil value on the specified position. lua_getglobal(L,"table"); lua_gettable(L,key); If there's a nil value stored in table[key], lua_gettable would give me the "unprotected error in call to Lua API (attempt to index a nil value)" message. Is there any way to check if there's actually something associated with that key, before actually pushing the key to do so ?

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  • How to simplyfy getting the patch for one changeset in git?

    - by childno.de
    git revision syntax is really powerful, but I can't find how to simplify things like: git diff 1a2e^..1a2e without writing tree'sh1 twice? Is there now "NEXT" syntax, something like: git diff 1a2e^..NEXT OR git changeset 1a2e ?? Another "next" syntax which might be useful if 1a2e is a known revision: git cherry-pick 1a2e+NEXT..origin/featureBranch ^^ "cherry pick anything from 1a2e to master EXCEPT 1a2e itself"

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  • Problems setting vertical scrollbar value in a datagrid (old one, not the better DataGridView).

    - by user365581
    I need to save the selected row and the vertical scrollBar's position after a refresh. This is how I do it: int currRow = myGrid.CurrentRowIndex; int vScrollPos = ((ScrollBar)myGrid.Controls[1]).Value // some code that refreshes the data among other things myGrid.CurrentRowIndex = currRow; // this sets the property myGrid.Select(currRow); // this selects in UI (both commands required) ((ScrollBar)myGrid.Controls[1]).Value = vScrollPos; Here's my problem: The grid always jumps to a place where the selected row is at the bottom. setting the current row makes it happen - similar to EnsureVisible of newer grid implementations. But after that there's the vScrollBar repositioning - and it just doesn't work right. In debug I see that the scroll bar value gets updated. In the UI, if I hit the down/up arrow on the scrollbar it suddenly jumps to the right place - But if I don't click anything the grid is just in the wrong position. I tried refreshing the grid/scroll bar to force a redraw, but it doesn't help. The actual grid position is just not in sync with the vertical ScrollBar's value. Any ideas?

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  • How do I get artifacts from one Maven module included in the resources of another in my build?

    - by Hanno Fietz
    I have Maven modules that produce a Flex application as an SWF file. I want to include that file in a web application that is made with another Maven module from the same build. I'm wondering how and at which lifecycle phase I get Maven to grab the artifact from the other module and put it insode the appropriate folder of the webapp module. Would I use a separate assembly module? The web app is running on a Jetty server in an OSGi environment (using Pax), the server side of the web app uses Struts. The final artifact as I see it would be a WAR file including my Action etc classes, JSP templates, static contents such as CSS or JS, and the SWF movies. I might be better off with these split over some other setup, but right now, I wouldn't know which.

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  • Django date filter: how come the format used is different from the one in datetime library?

    - by sebpiq
    For formatting a date using date filter you must use the following format : {{ my_date|date:"Y-m-d" }} If you use strftime from the standard datetime, you have to use the following : my_date.strftime("%Y-%m-%d") So my question is ... isn't it ugly (I guess it is because of the % that is used also for tags, and therefore is escaped or something) ? But that's not the main question ... I would like to use the same DATE_FORMAT parametrized in settings.py all over the project, but it therefore seems that I cannot ! Is there a work around (for example a filter that removes the % after the date has been formatted like {{ my_date|date|dream_filter }}, because if I just use DATE_FORMAT = "%Y-%m-%d" I got something like %2001-%6-%12)?

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  • How to make a jquery lightbox open multiple images from one link?

    - by ritch0s
    Using a lightbox like ColorBox or jQuery Lightbox Plugin how can i make a single link which opens a gallery / array of images? For example i have 1 thumbnail and when a user clicks it i want it to open multiple pictures in the lightbox so the user can click next or previous to view all the pictures within that gallery. My thinking was that i just do it as normal 1 link to 1 picture then use jquery to hide all but the first link. There must be a better way? Thanks.

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  • SQL grouping query question; evaluating a group of rows based on the value of one field.

    - by user324575
    I've got table vendorparts that lists all my parts and their vendor(s). Parts with multiple vendors have multiple records in this table. I'm trying to write a query that only returns the partid, and vendor of parts that do not have a default vendor assigned. Partid Vendor Defaultflag 1 A 1 2 B 0 2 C 0 3 D 0 3 E 0 3 F 1 4 G 0 I would like to return the following: Partid Vendor 2 A 2 B 4 G I'm obviously having issues with partid 3 and getting the query to see it as having a default vendor assigned.

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