大约有 45,000 项符合查询结果（耗时：0.0428秒） [XML]
JPA: what is the proper pattern for iterating over large result sets?
...essSession();
Query query = session
.createQuery("SELECT a FROM Address a WHERE .... ORDER BY a.id");
query.setFetchSize(Integer.valueOf(1000));
query.setReadOnly(true);
query.setLockMode("a", LockMode.NONE);
ScrollableResults results = query....
Duplicating a MySQL table, indices, and data
...ese 2 queries:
CREATE TABLE newtable LIKE oldtable;
INSERT INTO newtable SELECT * FROM oldtable;
To copy just structure and data use this one:
CREATE TABLE tbl_new AS SELECT * FROM tbl_old;
I've asked this before:
Copy a MySQL table including indexes
...
What's wrong with this 1988 C code?
...ain() is also dated, it should be like something this.
int main(int argc, char** argv) {
...
return 0;
}
The compiler will assume an int return value for a function w/o one, and I'm sure the compiler/linker will work around the lack of declaration for argc/argv and the lack of return valu...
How to detect when cancel is clicked on file input?
...s not exposed to the browser." This is not true if the dialog is closed by selecting a file.
– Trevor
Dec 1 '16 at 22:24
...
How can I save an image to the camera roll?
... app and they can be viewed as small thumbnails. When a small thumbnail is selected it goes to a new view and a fullscreen version can be viewed. I have a button in the right corner of the top nav that says "save" and this is the button that I wish to save the image to the device's cameral roll so t...
How to get a number of random elements from an array?
...- Math.random());
// Get sub-array of first n elements after shuffled
let selected = shuffled.slice(0, n);
DEMO:
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Sqlite primary key on multiple columns
...);
sqlite> insert into something (value) VALUES ('bla-bla');
sqlite> select * from something;
NULL|NULL|bla-bla
NULL|NULL|bla-bla
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Simplest way to profile a PHP script
...connect_to_db();
prof_flag("Perform query");
// Get all the data
$select_query = "SELECT * FROM data_table";
$result = mysql_query($select_query);
prof_flag("Retrieve data");
$rows = array();
$found_data=false;
while($r = mysql_fetch_assoc($result))
{
$found_data=tru...
How to use conditional breakpoint in Eclipse?
...t editor margin or in the Breakpoints
view in the Debug perspective, and select the breakpoint’s properties.
In the dialog box, check Enable Condition, and enter an arbitrary Java
condition, such as list.size()==0. Now, each time the breakpoint is
reached, the expression is evaluated in th...
Similarity String Comparison in Java
...ns Text's implementation of Levenshtein distance:
apply(CharSequence left, CharSequence rightt)
Implement it in your own. Below you'll find an example implementation.
Working example:
See online demo here.
public class StringSimilarity {
/**
* Calculates the similarity...