大约有 6,100 项符合查询结果（耗时：0.0383秒） [XML]
Primary key/foreign Key naming convention [closed]
...un, have them specify at length why their method is superior for recursive table references.
share
|
improve this answer
|
follow
|
...
SQL Server: Filter output of sp_who2
...
You could try something like
DECLARE @Table TABLE(
SPID INT,
Status VARCHAR(MAX),
LOGIN VARCHAR(MAX),
HostName VARCHAR(MAX),
BlkBy VARCHAR(MAX),
DBName VARCHAR(MAX),
Command VARCHAR(MAX),
CPUTime INT...
MySQL search and replace some text in a field
...MySQL query will do a text search and replace in one particular field in a table?
7 Answers
...
Left Join With Where Clause
I need to retrieve all default settings from the settings table but also grab the character setting if exists for x character.
...
LINQ Using Max() to select a single row
...
I don't see why you are grouping here.
Try this:
var maxValue = table.Max(x => x.Status)
var result = table.First(x => x.Status == maxValue);
An alternate approach that would iterate table only once would be this:
var result = table.OrderByDescending(x => x.Status).First();
...
How to make CSS width to fill parent?
...ose three different elements all have different rendering rules.
So for:
table#bar you need to set the width to 100% otherwise it will be only be as wide as it determines it needs to be. However, if the table rows total width is greater than the width of bar it will expand to its needed width. IF ...
Facebook database design?
...
Keep a friend table that holds the UserID and then the UserID of the friend (we will call it FriendID). Both columns would be foreign keys back to the Users table.
Somewhat useful example:
Table Name: User
Columns:
UserID PK
Emai...
schema builder laravel migrations unique on two columns
...array as the first param to create a unique key across multiple columns.
$table->unique(array('mytext', 'user_id'));
or (a little neater)
$table->unique(['mytext', 'user_id']);
share
|
im...
Sorting rows in a data table
We have two columns in a DataTable , like so:
12 Answers
12
...
Is there a better way to dynamically build an SQL WHERE clause than by using 1=1 at its beginning?
... offer you:
using (var dbContext = new MyDbContext())
{
IQueryable<Table1Item> query = dbContext.Table1;
if (condition1)
{
query = query.Where(c => c.Col1 == 0);
}
if (condition2)
{
query = query.Where(c => c.Col2 == 1);
}
if (condition3)...