大约有 6,100 项符合查询结果（耗时：0.0210秒） [XML]
Best way to check if object exists in Entity Framework?
...t.Employees.Any()) Then ' Check if there are "any" records in the Employee table
Dim employee = From c In context.Employees Select c.PayrollNumber ' Select just the PayrollNumber column to work with
For Each item As Object In employee ' Loop through each employee in the Employees ent...
How many GCC optimization levels are there?
...is a strong indicator that there are only 3 levels.
opts.c:default_options_table
opt_levels is so interesting, that we grep OPT_LEVELS_3_PLUS, and come across opts.c:default_options_table:
static const struct default_options default_options_table[] = {
/* -O1 optimizations. */
{ OPT_LEVELS_...
Nested select statement in SQL Server
... as a
We need to make an alias of the subquery because a query needs a table object which we will get from making an alias for the subquery. Conceptually, the subquery results are substituted into the outer query. As we need a table object in the outer query, we need to make an alias of the inne...
PostgreSQL delete with inner join
...
for larger tables, the first solution in this answer is potentially much faster.
– mgoldwasser
Nov 2 '14 at 16:58
2
...
Error: 10 $digest() iterations reached. Aborting! with dynamic sortby predicate
...controller="testctrl">
<label>{{total}}</label>
<table>
<tr ng-repeat="item in items track by $index;" ng-init="end($index);">
<td>{{item.number}}</td>
</tr>
</table>
</div>
var app = angular.module('myApp',...
Submitting a multidimensional array via POST with php
...p through the values.
if ( isset( $_POST['diameters'] ) )
{
echo '<table>';
foreach ( $_POST['diameters'] as $diam )
{
// here you have access to $diam['top'] and $diam['bottom']
echo '<tr>';
echo ' <td>', $diam['top'], '</td>';
e...
Entity Framework: “Store update, insert, or delete statement affected an unexpected number of rows (
...he scenes, but I don't have any extra code of my own that is modifying the tables. Is there a way to change this concurrency setting?
– strongopinions
Dec 4 '09 at 0:16
3
...
Unique Constraint in Entity Framework Code First
... requirement yourself and leave the database out of it. This is a more portable solution and forces you to be clear about your business rules in your code, but leaves your database open to invalid data getting back-doored.
...
LINQ Orderby Descending Query
... are ordering value which is null. If Delivery is a foreign key associated table then you should include this table first, example below:
var itemList = from t in ctn.Items.Include(x=>x.Delivery)
where !t.Items && t.DeliverySelection
orderby t.Deli...
CSS: 100% font size - 100% of what?
...serve a purpose is in Quirks mode, where font sizes are not inherited into tables. With this style, tables do get the parent font size. Of course, nobody in their right mind uses Quirks mode any more...
– Mr Lister
Feb 21 '14 at 19:25
...