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可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: I have table designed in SQL-Server 2008 R2. I have a column in that table which needs to be checked against another table when data is inserting. ALTER TABLE Table1 WITH CHECK ADD CONSTRAINT CK_Code CHECK (MyField in (Select Field From Table2)) This cause an error Sub-queries are not allowed in this context. Only scalar expressions are allowed. I have looked at this question about Check Constraint - Subqueries are not allowed in this context . Is there any way of achieving this without using a trigger? 回答1: Note, what you really want is a

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: I have two tables to be printed in same page. Data for those tables will be supplied from a map from a custom data source. I need to implement it. I googled for implementing this task. At that time I came across sub-reports concept, but I didn't get much info for how to implement sub-reports. I have an idea of how to create sub-reports. But I don't know how to fill sub reports with customdatasource. That's my question. Please help me in achieving this. Note: I tried to implement subreports, but I am getting an error. Here is the code I used

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: I am getting Procedure too Large Error in a VBA macro. I am using MS-Excel 2003. 回答1: You will get that error if your procedure is more than 64kb. These are some of the things that you can to compact your code 1) Get rid of repetitive code. See this example Sub Sample() Range("A1") = "Blah Blah" Range("A2") = "Blah Blah" Range("A3") = "Blah Blah" Range("A4") = "Blah Blah" Range("A5") = "Blah Blah" Range("A6") = "Blah Blah" Range("A7") = "Blah Blah" End Sub This code can be written as Sub Sample() For i = 1 To 7 Range("A" & i) = "Blah Blah"

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: This question already has an answer here: Delete directory with files in it? 30 answers I need a script which can remove a whole directory with all their subfolders, files and etc. I tried with this function which I found in internet before few months ago but it not work completely. function deleteFile($dir) { if(substr($dir, strlen($dir)-1, 1) != '/') { $dir .= '/'; } if($handle = opendir($dir)) { while($obj = readdir($handle)) { if($obj != '.' && $obj != '..') { if(is_dir($dir.$obj)) { if(!deleteFile($dir.$obj)) { echo $dir.$obj."<br />";

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: I have a check_orders task that's executed periodically. It makes a group of tasks so that I can time how long executing the tasks took, and perform something when they're all done (this is the purpose of res.join [1] and grouped_subs) The tasks that are grouped are pairs of chained tasks. What I want is for when the first task doesn't meet a condition (fails) don't execute the second task in the chain. I can't figure this out for the life of me and I feel this is pretty basic functionality for a job queue manager. When I try the things I

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: Let's say we have a root collection named 'todos'. Every document in this collection has: title : String subcollection named todo_items Every document in the subcollection todo_items has title : String completed : Boolean I know that querying in Cloud Firestore is shallow by default, which is great, but is there a way to query the todos and get results that include the subcollection todo_items automatically? In other words, how do I make the following query include the todo_items subcollection? db.collection('todos').onSnapshot((snapshot) =>

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: I'm trying to create Command Buttons dynamically, but clicking the button in question doesn't seem to raise the corresponding CommandButton_Click event. I noticed that in the examples on SO a property is set for Button.OnCommand as well as the CommandName and CommandArgument but it isn't an option in intellisense. So the question is, what am I doing wrong here (code below without the OnCommand), is it accessed in some other way - if so, why do the examples I've found all show it as .OnCommand? EDIT: Further to help, I have added the handler

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: Is it possible to write a C++ function that gets an R dataFrame as input, then modifies the dataFrame (in our case taking a subset) and returns the new data frame (in this question, returning a sub-dataframe) ? My code below may make my question more clear: code : # Suppose I have the data frame below created in R: myDF = data.frame(id = rep(c(1,2), each = 5), alph = letters[1:10], mess = rnorm(10)) # Suppose I want to write a C++ function that gets id as inout and returns # a sub-dataframe corresponding to that id (**If it's possible to

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: I keep the name of the subroutine I want to call at runtime in a variable called $action. Then I use this to call that sub at the right time: &{\&{$action}}(); Works fine. The only thing I don't like is that it's ugly and every time I do it, I feel beholden to add a comment for the next developer: # call the sub by the name of $action Anyone know a prettier way of doing this? UPDATE: The idea here was to avoid having to maintain a dispatch table every time I added a new callable sub, since I am the sole developer, I'm not worried about other

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: Is there a way to take HTML and import it to excel so that it is formatted as rich text (preferably by using VBA)? Basically, when I paste to an Excel cell, I'm looking to turn this: This is a test. Will this text be bold or italic into this: This is a test. Will this text be bold or italic 回答1: Yes it is possible :) In fact let Internet Explorer do the dirty work for you ;) TRIED AND TESTED MY ASSUMPTIONS I am assuming that the html text is in Cell A1 of Sheet1. You can also use a variable instead. If you have a column full of html values,