大约有 40,000 项符合查询结果（耗时：0.0426秒） [XML]
How can you represent inheritance in a database?
...is is how you would have to query all the policies regardless of the type:
SELECT date_issued, other_common_fields, 'MOTOR' AS type
FROM policies_motor
UNION ALL
SELECT date_issued, other_common_fields, 'PROPERTY' AS type
FROM policies_property;
Note how adding new subtypes woul...
Get generated id after insert
...d= db.getSQLiteDatabase().insert("user", "", values) ;
If query exec use select last_insert_rowid()
String sql = "INSERT INTO [user](firstName,lastName) VALUES (\"Ahmad\",\"Aghazadeh\"); select last_insert_rowid()";
DBHelper itemType =new DBHelper();// your dbHelper
c = db.rawQuery(sql, null);
...
How to get all columns' names for all the tables in MySQL?
...
select * from information_schema.columns
where table_schema = 'your_db'
order by table_name,ordinal_position
share
|
impro...
Limit file format when using ?
...te of <input type = "file"> can help to provide a filter in the file select dialog box of the OS. For example,
<!-- (IE 10+, Edge (EdgeHTML), Edge (Chromium), Chrome, Firefox 42+) -->
<input type="file" accept=".xls,.xlsx" />
should provide a way to filter out files other...
Intelli J IDEA takes forever to update indices
...ks perfectly. Thanks for the solution friends.
Just:
Open IntelliJ IDEA
Select the File menu
Select the Invalidate Caches / Restart... menu.
Once selected you get a pop-up with a bunch of options.
Select Invalidate and Restart
and before doing that make sure you saved all your changes else it mig...
Sublime Text 2: Trim trailing white space on demand
...way that uses no plugins or settings and works in most situations.
Multi-Select and move cursor to the end of every line
Hold CTRL-Shift, Press Left, Right
The spaces and tabs at the end of the lines should now be selected. Press Delete or Backspace
Note - Special characters such as ( and + may ...
Turning live() into on() in jQuery
...on states (in bold ;)):
Event handlers are bound only to the currently selected elements; they must exist on the page at the time your code makes the call to .on().
Equivalent to .live() would be something like
$(document.body).on('change', 'select[name^="income_type_"]', function() {
al...
Event binding on dynamically created elements?
I have a bit of code where I am looping through all the select boxes on a page and binding a .hover event to them to do a bit of twiddling with their width on mouse on/off .
...
Can anonymous class implement interface?
...implementation for you. Using the excellent LinFu project you can replace
select new
{
A = value.A,
B = value.C + "_" + value.D
};
with
select new DynamicObject(new
{
A = value.A,
B = value.C + "_" + value.D
}).CreateDuck<DummyInterface>();
...
How to create war files
...
I've always just selected Export from Eclipse. It builds the war file and includes all necessary files. Providing you created the project as a web project that's all you'll need to do. Eclipse makes it very simple to do.
...