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问题 I have a problem with this code. Every time I type a text in the TextBox this happen. there's an added column and its empty(I want to remove this) public void searchData() { string sql = "Select * from Inventory"; cmd = new OleDbCommand(sql, con); try { con.Open(); cmd.Connection.CreateCommand(); string value = cboFields.Text; switch (value) { case "ID": cmd.CommandText = "Select * from Inventory where ID LIKE @searchKey"; break; case "Quantity": cmd.CommandText = "Select * from Inventory

问题 I'm brainstorming a search function for the user that is similar to iTunes Smart Playlists. I can currently display all of the release years for all of the films in the database. A user can pick a year and see all of the films released in that year. Or I can show all of the genres of movie. A user can choose a genre and see all of the movies that match that criteria. What I want is a form that the user can dynamically choose their own criteria. So for instance "Release Date" "is after" "2000"

问题 I have a screenshot as shown below which I have to replicate in HTML/CSS. At this moment, I am able to replicate this in fiddle (with no search-icon and surrounding white square rectangle). The HTML and CSS codes which I have use in order to make the blue solid rectangle bar is: HTML: <div class="nav-top-searchbar"> <form> <input type="text" name="search"> <div style=""> <img tabindex="1" src="https://s9.postimg.org/d6s4xvykv/Ellipsis.png" id="ellipsis"> <div class="dropdown"> <li><a href="#"

问题 How do I do full boolean text search in R? I am using str_match which works only with OR or | operator, or I use Reduce function with &. Is there a way to do AND, OR and XOR seamlessly for text search in R? 回答1: consider using the rlucene package which connects to the lucene search library which provides full-text search including a BooleanQuery which siport AND OR and NOT. 来源： https://stackoverflow.com/questions/32124185/boolean-text-search-in-r

问题 Q1. I want to grep something like that: grep -Ir --exclude-dir="some*dirs" "my-text" ~/somewhere but I don't want to show the whole strings containing "my-text", I want to see only list of files. Q2. I want to see list of files containing "my-text" but not containing "another-text". How to do that? Sorry, but I could not find the answer in man grep, neither in google. 回答1: Q1. You mustn't have googled very hard on that one. man grep -l, --files-with-matches Suppress normal output; instead

问题 I am programming several search functions, for which I use the Node datatype: data Node a = Node { [...] , getPath :: [a] -- ^ Previous states this node has visited } That field, getPath , is what I use to check if I have previously visited that state in that node: when expanding a new node, I check that by doing: visited = `elem` path It works, but it becomes incredibly costly when there are a lot of nodes expanded and the paths become too long. Is there a better way to keep track of the

问题 We have two fields Street Number 1 & Street Number 2 in Elastic Search. We also have an Address field in Elastic Search and Address is a combination of 2 fields with some other fields. So we have an address as: 1604-1612 Calver Building 1608- 1645 Park House If the user is searching with 1610 both the address should be returned. Any help on how the query can be formed? 回答1: The idea would be to leverage the range data type and store the min and max street number in that field. In your mapping

问题 On my website's Start page I have a Search Mask where user set select different Search Criteria. When user doee't then the default values will be set for the search parameters. By clicking on Search buttom user comes on preview page, where the user has possibility to refine his search parameters agaian. And there can by many different types of preview pages. For examples if users searches in Cars category then the preview page be other and the search mask will other as the have searched in

问题 I am trying to create a column in power BI that searches for a keyword in a column of a table and returns a category. For example: in table 1 there is a column with feedback and if it contains any keyword in the keyword column of table 2 ( which is updated regularly) a TRUE value is returned. The following code works great if the keyword is the only word in the sentence like "product broke after using it once" returns FALSE if looking for the keyword "broke" and the word "broke" used as the

问题 I am trying to create a column in power BI that searches for a keyword in a column of a table and returns a category. For example: in table 1 there is a column with feedback and if it contains any keyword in the keyword column of table 2 ( which is updated regularly) a TRUE value is returned. The following code works great if the keyword is the only word in the sentence like "product broke after using it once" returns FALSE if looking for the keyword "broke" and the word "broke" used as the