duplicates

问题 I'm trying to INSERT in my Postgresql database only if my model don't exists. I'm using PDO connection, I try IGNORE and ON DUPLICATE KEY UPDATE but with errors in PDO / syntax. MY Code: if(isset($_POST['insertModel'])){ require("includes/connection.php"); $models = $_POST['name']; $parametros = array($models); $sth = $dbh->prepare("INSERT INTO models (name) VALUES ( ? )"); $sth->execute($parametros); if($sth){ header("location: admin.php?model_inserted=1"); } } Thanks 回答1: ON DUPLICATE KEY

问题 I have a dataset which is a DataSet of String and it has the data 12348,5,233,234559,4 12348,5,233,234559,4 12349,6,233,234560,5 12350,7,233,234561,6 I want to figure out the duplicate rows in a dataset, how do i do that? I would like to remove the duplicates. in the example, the duplicated row is 12348,5,233,234559,4 and I want to output just a single instance of it How do i go about doing it? 回答1: Dimas answer should work. Here is another solution. I think (not positive) groupby would hold

问题 I got a NSMutableArray which I want to add strings to. I need to check if that string already exists on the array before adding ths string to it. Does anyway know a good way to do it? Thanks! 回答1: If order doesn't matter, the simplest way would be to switch to using an NSMutableSet. Sets are unordered and NSSets and NSMutableSets can contain each object only once. Only a counted set (NSCountedSet) can contain the same object multiple times. If order does matter, continue using NSMutableArray,

问题 Say I have a table with data like this: +------------------------------+------------+---------+ | email | uname | credits | +------------------------------+------------+---------+ | 824@hotmail.com | barbra | 6 | | 123@gmail.com | smith | 25 | | 123@gmail.com | smithy | 30 | | abc@hotmail.com | another | 25 | | def@comcast.net | rob | 8 | | abc@hotmail.com | ben | 62 | | ijk@yahoo.com | jeb | 2 | | ijk@yahoo.com | joe | 5 | +------------------------------+------------+---------+ So there is

问题 Say I have a table with data like this: +------------------------------+------------+---------+ | email | uname | credits | +------------------------------+------------+---------+ | 824@hotmail.com | barbra | 6 | | 123@gmail.com | smith | 25 | | 123@gmail.com | smithy | 30 | | abc@hotmail.com | another | 25 | | def@comcast.net | rob | 8 | | abc@hotmail.com | ben | 62 | | ijk@yahoo.com | jeb | 2 | | ijk@yahoo.com | joe | 5 | +------------------------------+------------+---------+ So there is

问题 I have a simple web service class defined as follows: package com.me.basiccalcws; import javax.jws.WebService; @WebService public class Calculator { public int add(int a, int b) { return a + b; } } I use the wsgen tool to generate a wsdl : wsgen -classpath ..\bin -wsdl -s src -r wsdl -d bin com.me.basiccalcws.Calculator Then I use wsimport to generate client stubs: wsimport -s src ..\_wsgen\wsdl\CalculatorService.wsdl The files that are generated after running wsimport are as follows: Add

问题 I will try to put forward this question in a simple way. Consider that I have a table with two columns (Name, Contact_No). We can have the same name but with different Contact No in the table. All I want to know is to find out which name is NOT repeated in the entire table. Or in other words, which name is unique in this table and has appeared only once.. This is just an example, the actual scenario is quite different but if anyone can help me with this example, I'll be able to handle the

问题 I will try to put forward this question in a simple way. Consider that I have a table with two columns (Name, Contact_No). We can have the same name but with different Contact No in the table. All I want to know is to find out which name is NOT repeated in the entire table. Or in other words, which name is unique in this table and has appeared only once.. This is just an example, the actual scenario is quite different but if anyone can help me with this example, I'll be able to handle the

问题 I already have a batch file that I can drop in any SHOW_NAME directory and it will move files from a sub-folder to its SEASON parent directory. For example: F:\TV_SHOWS\SHOW_NAME\SEASON1\TITLE_EP1\title_episode1.mkv F:\TV_SHOWS\SHOW_NAME\SEASON1\TITLE_EP2\title_episode2.mkv F:\TV_SHOWS\SHOW_NAME\SEASON1\TITLE_EP3\title_episode3.mkv F:\TV_SHOWS\SHOW_NAME\SEASON1\title_episode3.mkv When it moves all files to the parent folder ( SEASON1 ) the " title_episode3.mkv " is a duplicate and overwrites

问题 This question already has answers here : Remove duplicates from an array of objects in JavaScript (49 answers) Closed last year . I seem to only find ways to remove duplicates from an array using other JS libraries but I'm looking to do it in pure JS or typescript since I'm working on an Angular project. My problem is that I may get an array that has duplicate entries, such as this one: data [0: {Id: 1, Definition: "House"}, 1: {Id: 1, Definition: "House"}] And I want to filter it out so that