Databases
StackOverflow2013
Postsdbo
PO
 

Note that there are some explanatory texts on larger screens.

plurals
  1. PO
    primarykey
    data
    text
    <p>Try this implementation from <a href="http://microsoftnlayerapp.codeplex.com/">Domain Oriented N-Layered .NET 4.0 Sample App</a> (there is also implementation of <a href="http://en.wikipedia.org/wiki/Specification_pattern">specification pattern</a>):</p> <pre><code>public static class ExpressionBuilder { public static Expression&lt;T&gt; Compose&lt;T&gt;(this Expression&lt;T&gt; first, Expression&lt;T&gt; second, Func&lt;Expression, Expression, Expression&gt; merge) { var map = first.Parameters.Select((f, i) =&gt; new { f, s = second.Parameters[i] }).ToDictionary(p =&gt; p.s, p =&gt; p.f); var secondBody = ParameterRebinder.ReplaceParameters(map, second.Body); return Expression.Lambda&lt;T&gt;(merge(first.Body, secondBody), first.Parameters); } public static Expression&lt;Func&lt;T, bool&gt;&gt; And&lt;T&gt;(this Expression&lt;Func&lt;T, bool&gt;&gt; first, Expression&lt;Func&lt;T, bool&gt;&gt; second) { return first.Compose(second, Expression.And); } public static Expression&lt;Func&lt;T, bool&gt;&gt; Or&lt;T&gt;(this Expression&lt;Func&lt;T, bool&gt;&gt; first, Expression&lt;Func&lt;T, bool&gt;&gt; second) { return first.Compose(second, Expression.Or); } } public class ParameterRebinder : ExpressionVisitor { private readonly Dictionary&lt;ParameterExpression, ParameterExpression&gt; map; public ParameterRebinder(Dictionary&lt;ParameterExpression, ParameterExpression&gt; map) { this.map = map ?? new Dictionary&lt;ParameterExpression, ParameterExpression&gt;(); } public static Expression ReplaceParameters(Dictionary&lt;ParameterExpression, ParameterExpression&gt; map, Expression exp) { return new ParameterRebinder(map).Visit(exp); } protected override Expression VisitParameter(ParameterExpression p) { ParameterExpression replacement; if (map.TryGetValue(p, out replacement)) { p = replacement; } return base.VisitParameter(p); } } </code></pre>
    singulars
    1. This table or related slice is empty.
    1. POExpression tree and AND condition
      singulars
      1. PTQuestion
    1. PTAnswer
    1. This table or related slice is empty.
    1. USpolybios
    plurals
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. POExpression tree and AND condition
      singulars
      1. PTQuestion
    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. VTAcceptedByOriginator
    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