field

问题 It's possible to make a query to see if there is duplicated records in the same row? I tried to find a solution but all I can find is to detected duplicated fields in columns, not in rows. example, let's say I have a table with rows and items: | id | item1 | item2 | item3 | item4 | item5 | upvotes | downvotes | -------------------------------------------------------------------- | 1 | red | blue | red | black | white | 12 | 5 | So I want to see if is possible to make a query to detect the

问题 I have made a RequestForQuote form, in which I give the possebility to add new positions to get RFQ'ed. In basics this is quite easy done via PHP in my case. Work realy fine. You may want to have a look. It is to be found at: my website Now I got infected with the jquery-virus and simply wanted to add the datepicker ui (for the latest version I got from their webpage). <input type="text" size="10" id="deldate[] class="datepicker" value="<?php echo $_REQUEST['deldate'][$k]; ?>" /> $k is from a

问题 Let tell you a bit about my script first. It creates a php/html render of the friend requests. As you may know, there can be 1 to many friend requests at a time. Right now my jQuery script only works for the first so I do need some guidance to get the two to many functionality working. Notice that my div's have a different id for each person. FIrst here's my html <div class='fRequest'> <h3>Pending Friend Requests:</h3><div class='friendRequest' id='0'><img src='[url]' alt='Charles Williamson'

问题 I have a nested loop: {{$columns := .columns}} {{range $dx := .dataList}} {{range $c := $columns}} {{index $dx $c}} {{end}} {{end}} dataList is the orm model array. With ID, Title fields , then columns is the []string variable contains all orm model field names like ID, Title . type AdFile struct { ID uint `gorm:"primary_key"` Title string } I've tried with {{(index .listData 0).Title}} and it works. But if i want to access $dx.Title , $dx.ID .... with Title , ID as variables, but it doesn't

问题 I would like to ask if how to create a dynamic attribute on the model class. Let's suppose I have a table structure like below code. Schema::create('materials', function (Blueprint $table) { $table->increments('id'); $table->string('sp_number'); $table->string('factory'); $table->text('dynamic_fields')->comment('All description of the material will saved as json'); $table->timestamps(); }); I have a column in my table structure named "dynamic_fields" that will hold a JSON string for the

问题 I am trying to group my data based on age. I use the following database select: select * from ( select 0 range_start, 11 range_end, '0-10 days' date_description from dual union select 11, 21, '11-20 days' from dual union select 21, 31, '21-30 days' from dual union select 31, 99999, '31+ days' from dual) date_helper left outer join table on table.date <= date_helper.range_start*-1 + sysdate and table.date > date_helper.range_end*-1 + sysdate I then make a group based on the date_description

问题 I'm trying to get a subset of results as a virtualField for use in my view. I may even be way off on how I'm approaching this, but here's what I've done so far: I started with this question here: CakePHP virtualField find all not null which lead to this little beauty. Now I have an issue where the find statement passing (Array) into the MySQL. My code looks like: class Transaction extends AppModel { public function __construct($id = false, $table = null, $ds = null) { parent::__construct($id,

问题 Say I have this C# class public class MyClass { int a; int[] b = new int[6]; } Now say I discover this class using reflection and while looking at the fields I find that one of them is of type Array (ie: b) foreach( FieldInfo fieldinfo in classType.GetFields() ) { if( fieldInfo.FieldType.IsArray ) { int arraySize = ?; ... } } I know it's not guaranteed that the array has a field initializer that creates the array but if it does I would like to know the size of the array created by the field

问题 I have a (quite) complicated file with the usual mix of components. I have a field (called keyloaded ) and a linked property (called Keyloaded ). Whilst working within the class, I accidentally directly manipulated the field instead of the property. It most likely is because I am still quite a bit new to all of this (I triple check now!), however, this is already a private field and outside of working with the class works great. Is there just something simple I can do that will remove it from

问题 I want to add unique ID (within a single session) to each object of a certain class. One solution is to use a factory function which increments some static counter. A simpler solution is to add this counter to the class itself, e.g.: class fooWithUniqueId { public: fooWithUniqueId() : id(next_id++) {...}; long id; private: static long next_id = 0; } A flaw, however, is that the id field is public, and can be changed by the caller, thus violating its uniqueness. A traditional (well, at least