大约有 40,000 项符合查询结果（耗时：0.0329秒） [XML]
How do I map lists of nested objects with Dapper
... = cnn.Query<Course>("select * from Courses where Category = 1 Order by CreationDate");
Grab the relevant mapping:
var mappings = cnn.Query<CourseLocation>(
"select * from CourseLocations where CourseId in @Ids",
new {Ids = courses.Select(c => c.Id).Distinct()});
Grab the...
How to create composite primary key in SQL Server 2008
...the diference between using Primary Key and CONSTRAINT like in the example by @matthew-abbott ?
– mateuscb
Oct 6 '11 at 19:57
...
Foreign key constraint may cause cycles or multiple cascade paths?
...mple cases. Fact remains, SQL Server doesn't even try, plays it ultra safe by disallowing more than one path and at least it tells you so.
Microsoft themselves advises the use of triggers instead of FK constraints.
share
...
SELECT * FROM X WHERE id IN (…) with Dapper ORM
...N clause is not the most highly performing query and can often be replaced by an exists clause, which will be faster.
– Don Rolling
Sep 18 '13 at 15:25
25
...
MySQL Multiple Joins in one query?
...olumn common
WHERE Doctor.Doctorname LIKE 'varun%' // setting doctor name by using LIKE
AND Appointment.AppointmentDateTime BETWEEN '1/16/2001' AND '9/9/2014' //comparison b/w dates
ORDER BY AppointmentDateTime ASC; // getting data as ascending order
I wrote the solution to get date format ...
How do you copy a record in a SQL table but swap out the unique id of the new row?
...OM #TempTable;
DROP TABLE #TempTable;
You can drop more than one column by separating them with a ",".
The :id should be replaced with the id of the row you want to copy.
MyDatabase, MyTable and IndexField should be replaced with your names (of course).
...
Custom toast on Android: a simple example
...(R.layout.toast_layout,
(ViewGroup) findViewById(R.id.toast_layout_root));
ImageView image = (ImageView) layout.findViewById(R.id.image);
image.setImageResource(R.drawable.android);
TextView text = (TextView) layout.findViewById(R.id.text);
text.setText("Hello! This i...
SQL Call Stored Procedure for each Row without using a cursor
...tomerID
FROM Sales.Customer
WHERE CustomerID > @CustomerId
ORDER BY CustomerID
-- Exit loop if no more customers
IF @@ROWCOUNT = 0 BREAK;
-- call your sproc
EXEC dbo.YOURSPROC @CustomerId
END
share
...
Database design for audit logging
...
One method that is used by a few wiki platforms is to separate the identifying data and the content you're auditing. It adds complexity, but you end up with an audit trail of complete records, not just listings of fields that were edited that you t...
How are the points in CSS specificity calculated
... this base is.
It turns out that the "very large base" employed (at least by the 4 most commonly-used browsers*) to implement this standard algorithm is 256 or 28.
What this means is that a style specified with 0 ids and 256 class-names will over-ride a style specified with just 1 id. I tested t...