wildcard

问题 I am receiving a "wildcard query expansion resulted in too many terms" error when executing a query similar to the following: SELECT * FROM table_a WHERE contains(clob_field, '%a%') > 0; Does anyone know a workaround/solution to this problem? 回答1: According to this, you may need to increase the wildcard_maxterms parameter, or take further steps. See the link for details (I'm not an expert in Oracle Text though). 来源： https://stackoverflow.com/questions/2554054/wildcard-query-expansion-resulted

问题 I currently have a (fairly sizable) JavaScript file which is used to animate some elements on a page. There are four 'sets' of scripts used on the page, each set contains a number of scripts equal to the number of steps in the tutorial on the page. What I would like to do is rework the scripts so that they will use wildcard targeting (if possible) instead of using the current setup (which is one script per function per step). I will provide the first script from each of the sets: First

问题 I have a directory which contains CSV files needing to be moved to another directory: C:\Users\JohnSmith\Desktop\Testing\report-20180819040000-20180826040000-4 We receive a new file weekly where the dates in the directory name will be updated. I want to create a batch file to copy this data using a wildcard on report* but I am running into some issues. The wildcard appears to work without any issues when I first navigate to: C:\Users\JohnSmith\Desktop\Testing\ then use: dir report* It also

问题 This code snippet works to remove an existing class, before adding a new one, when I specify it directly (ie, 'ratingBlock', 'ratingBlock1', 'ratingBlock2', etc.). But when I use a wildcard selector in the removeClass ('[class^="ratingBlock"]'), it doesn't work. Am I doing something wrong? Thanks. <style type="text/css"> .ratingBlock {background:gold !important;} .ratingBlock1, .ratingBlock2, .ratingBlock3, .ratingBlock4, .ratingBlock5 {background:LightGreen;} </style> <div class="test block

问题 I have the following code in my C# program: OpenFileDialog fDialog = new OpenFileDialog(); fDialog.Title = "Open a file"; fDialog.Filter = "NCF files (*.ncf)|*.ncf|All files (*.*)|*.*|No Extensions (*.)|*."; I want to be able to have the user pick from the following: *.NCF (files with .NCF extension only) **.* (all files) and files that have no extensions such as: filewithnoextension I know ***.* will do this, but it also displays the .NCF, .TXT, and all other files in the same directory. I

问题 I have a very basic question. The code below doesn't compile (assume Apple Extends Fruit): List<? extends Fruit> numbers = new ArrayList<>(); numbers.add(new Apple()); //compile time error When reading about why not, I understand the words but not the concept :). Let's assume first Fruit is NOT an abstract class. I understand that that since we're dealing with multiple subtypes all of which extend Fruit. Supposedly since we can't tell the exact type of fruit, we can't put anything in the

问题 After taking a look at this SO question and doing my own research, it appears that you cannot have a leading wildcard while using full text search. So in the most simple example, if I have a Table with 1 column like below: TABLE1 coin coinage undercoin select COLUMN1 from TABLE1 where COLUMN1 LIKE '%coin%' Would get me the results I want. How can I get the exact same results with FULL TEXT SEARCH enabled on the column? The following two queries return the exact same data, which is not exactly

问题 I would like to match this 'wildcard %' in MySQL. I tried using escape \% and it is not working. 回答1: The default escape character is \ . So just prefix % with a \ as: \% : The manual clearly says: To test for literal instances of a wild-card character, precede it by the escape character. If you do not specify the ESCAPE character, “\” is assumed. Search for % in Stack%Overflow : mysql> select 'Stack%Overflow' like '%\%%'; +------------------------------+ | 'Stack%Overflow' like '%\%%' | +---

问题 I was reviewing someone else's code the other day and I came across a line that raised some concern. To simplify, say I have a generic Class A and an abstract Class B. Is the following instantiation allowed and if so, why? Object obj = new A<? extends B>(); I personally have never seen an instantiation like the above, although a declaration such as A<? extends B> obj = null; would certainly hold. I've always used the wildcard in generics to declare method parameters, so I may just not have

问题 Suppose I have three dataframes called A1-pre, B3-pos, B4-pre and I want to merge these dataframes. The columns have the same name, so I can use rbind. newdf <- rbind(A1-pre, B3-pos, B4-pre) #this would work However, I do not want to manually input all the names of the dataframes myself, I rather use a wildcard for that, so something like newdf <- rbind(grep(-)) #but this does not work Any idea how I could do that? Or even better, matching any dataframe named "pre" or "pos" and rbind them all