大约有 40,000 项符合查询结果(耗时:0.0430秒) [XML]
How to change identity column values programmatically?
...BLE Temp
(
ID INT PRIMARY KEY,
X VARCHAR(10)
)
/*Switch table metadata to new structure*/
ALTER TABLE Test SWITCH TO Temp;
/*Do the update*/
UPDATE Temp SET ID = ID + 1;
/*Switch table metadata back*/
ALTER TABLE Temp SWITCH TO Test;
/*ID values have been updated*/
SELECT *
FROM Test
/*Safety c...
Insert auto increment primary key to existing table
...
It will make the new id column the first in the table as opposed to last, which is the default behaviour.
– fmalina
Oct 24 '15 at 20:24
...
Why is null an object and what's the difference between null and undefined?
...using Boolean as a function (normally it is a constructor, to be used with new):
> Boolean(null)
false
> Boolean("")
false
> Boolean(3-3)
false
> Boolean({})
true
> Boolean([])
true
share
|
...
android get all contacts
...ontract.CommonDataKinds.Phone.CONTACT_ID + " = ?",
new String[]{id}, null);
while (pCur.moveToNext()) {
String phoneNo = pCur.getString(pCur.getColumnIndex(
ContactsContract.CommonDataKinds.Phone.NUMBER));
...
In PHP, how do you change the key of an array element?
...
$arr[$newkey] = $arr[$oldkey];
unset($arr[$oldkey]);
share
|
improve this answer
|
follow
...
Set the absolute position of a view
... = (RelativeLayout) findViewById(R.id.my_relative_layout);
ImageView iv = new ImageView(this);
RelativeLayout.LayoutParams params = new RelativeLayout.LayoutParams(30, 40);
params.leftMargin = 50;
params.topMargin = 60;
rl.addView(iv, params);
More examples:
Places two 30x40 ImageViews (one y...
Why am I getting a “401 Unauthorized” error in Maven?
...It seems that 0.1.2-SNAPSHOT, which is already created, interferes with my new 0.1.2 version, as you suggest. Changing it to 0.1.0 ("earlier"), or 0.1.2a, or 0.1.3 ("later") results in the error I was dealing with before this one:
– aliteralmind
Jul 18 '14 at 1...
A fast method to round a double to a 32-bit int explained
...l = function(e) {
var $elem = $('.new-login-left'),
docViewTop = $window.scrollTop(),
docViewBottom = docViewTop + $window.height(),
...
How do I search for an object by its ObjectId in the mongo console?
...b').ObjectId;
> var id = req.params.gonderi_id;
> var o_id = new ObjectId(id);
> db.test.find({_id:o_id})
Edit: corrected to new ObjectId(id), not new ObjectID(id)
share
|
improve...
Showing empty view when ListView is empty
...ew(R.layout.mylist);
// shows list view
String[] values = new String[] { "foo", "bar" };
// shows empty view
values = new String[] { };
setListAdapter(new ArrayAdapter<String>(
this,
android.R.layout.simple_list_item_1,...