Databases
StackOverflow2013
Postsdbo
PO
 

Note that there are some explanatory texts on larger screens.

plurals
  1. PO
    primarykey
    data
    text
    <p>Marc's answer gives sparse matrix that can't be pumped into Grid directly.<br> I tried to expand the code from the <a href="http://www.extensionmethod.net/Details.aspx?ID=147" rel="noreferrer">link provided by Vasu</a> as below:</p> <pre><code>public static Dictionary&lt;TKey1, Dictionary&lt;TKey2, TValue&gt;&gt; Pivot3&lt;TSource, TKey1, TKey2, TValue&gt;( this IEnumerable&lt;TSource&gt; source , Func&lt;TSource, TKey1&gt; key1Selector , Func&lt;TSource, TKey2&gt; key2Selector , Func&lt;IEnumerable&lt;TSource&gt;, TValue&gt; aggregate) { return source.GroupBy(key1Selector).Select( x =&gt; new { X = x.Key, Y = source.GroupBy(key2Selector).Select( z =&gt; new { Z = z.Key, V = aggregate(from item in source where key1Selector(item).Equals(x.Key) &amp;&amp; key2Selector(item).Equals(z.Key) select item ) } ).ToDictionary(e =&gt; e.Z, o =&gt; o.V) } ).ToDictionary(e =&gt; e.X, o =&gt; o.Y); } internal class Employee { public string Name { get; set; } public string Department { get; set; } public string Function { get; set; } public decimal Salary { get; set; } } public void TestLinqExtenions() { var l = new List&lt;Employee&gt;() { new Employee() { Name = "Fons", Department = "R&amp;D", Function = "Trainer", Salary = 2000 }, new Employee() { Name = "Jim", Department = "R&amp;D", Function = "Trainer", Salary = 3000 }, new Employee() { Name = "Ellen", Department = "Dev", Function = "Developer", Salary = 4000 }, new Employee() { Name = "Mike", Department = "Dev", Function = "Consultant", Salary = 5000 }, new Employee() { Name = "Jack", Department = "R&amp;D", Function = "Developer", Salary = 6000 }, new Employee() { Name = "Demy", Department = "Dev", Function = "Consultant", Salary = 2000 }}; var result5 = l.Pivot3(emp =&gt; emp.Department, emp2 =&gt; emp2.Function, lst =&gt; lst.Sum(emp =&gt; emp.Salary)); var result6 = l.Pivot3(emp =&gt; emp.Function, emp2 =&gt; emp2.Department, lst =&gt; lst.Count()); } </code></pre> <p>* can't say anything about the performance though.</p>
    singulars
    1. This table or related slice is empty.
    1. POPivot data using LINQ
      singulars
      1. PTQuestion
    1. PTAnswer
    1. This table or related slice is empty.
    1. USSanjaya.Tio
    plurals
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. VO
      singulars
      1. PO
      1. This table or related slice is empty.
      1. VTUpMod
    2. VO
      singulars
      1. PO
      1. This table or related slice is empty.
      1. VTUpMod
    3. VO
      singulars
      1. PO
      1. This table or related slice is empty.
      1. VTUpMod
    1. This table or related slice is empty.
 

Querying!

 
Guidance
A row detail

Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

Related data can be related in a to-one or a to-many fashion. Captions of data related in a to-many fashion link to a list view showing a filtered view of the table.

Try moving around until you find a non-empty to-many entry and click on the label to get to one. You can move back to the root by clicking on the database name in the header.

SQuiL has stopped working due to an internal error.

If you are curious you may find further information in the browser console, which is accessible through the devtools (F12).

Reload