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What is a JavaBean exactly?
...ble, from the API documentation:
Serializability of a class is enabled by the class implementing the
java.io.Serializable interface. Classes that do not implement this
interface will not have any of their state serialized or deserialized.
All subtypes of a serializable class are themselves...
PostgreSQL function for last inserted ID
...seless if you intend to get the last inserted id globally (not necessarily by your session). For this, you must resort to SELECT max(id) FROM table (of course, this will not read uncommitted inserts from other transactions).
Conversely, you should never use SELECT max(id) FROM table instead one of...
Naming “class” and “id” HTML attributes - dashes vs. underlines [closed]
...
objectContainer.messageClass = new message(document.getElementById('message'));
objectContainer.messageClass.write('loaded');
}
asyncScript.src = 'message.js';
document.appendChild(asyncScript);
}else{
objectContainer.messageClass = new me...
SQL Server indexes - ascending or descending, what difference does it make?
...l1, col2 DESC);
can be used for either:
SELECT *
FROM mytable
ORDER BY
col1, col2 DESC
or:
SELECT *
FROM mytable
ORDER BY
col1 DESC, col2
, but not for:
SELECT *
FROM mytable
ORDER BY
col1, col2
An index on a single column can be efficiently used for so...
How to jQuery clone() and change id?
...r from that DIV's ID (i.e: 3 from "klon3")
// And increment that number by 1
var num = parseInt( $div.prop("id").match(/\d+/g), 10 ) +1;
// Clone it and assign the new ID (i.e: from num 4 to ID "klon4")
var $klon = $div.clone().prop('id', 'klon'+num );
// Finally insert $klon wher...
how to get last insert id after insert query in codeigniter active record
...faik the insert_id() functions returns the id of the last insert performed by the db object you're using. This should handle concurrent inserts, shouldn't it? Please correct me if I'm wrong.
– Abraham Philip
Jul 20 '15 at 20:20
...
How can I change CSS display none or block property using jQuery?
...e former function hides the text only and doesn't free up a space occupied by an element whereas latter hide the content and free up the space occupied by cocern element
– Dila Gurung
Oct 18 '18 at 17:10
...
MySQL foreign key constraints, cascade delete
...
I got confused by the answer to this question, so I created a test case in MySQL, hope this helps
-- Schema
CREATE TABLE T1 (
`ID` int not null auto_increment,
`Label` varchar(50),
primary key (`ID`)
);
CREATE TABLE T2 (
`...
Restful way for deleting a bunch of items
...
DELETE can potentially have the body ignored by HTTP infrastructure: stackoverflow.com/questions/299628/…
– Luke Puplett
Dec 9 '15 at 18:19
...
How to delete duplicate rows in SQL Server?
...3], [col4], [col5], [col6], [col7],
RN = ROW_NUMBER()OVER(PARTITION BY col1 ORDER BY col1)
FROM dbo.Table1
)
DELETE FROM CTE WHERE RN > 1
DEMO (result is different; I assume that it's due to a typo on your part)
COL1 COL2 COL3 COL4 COL5 COL6 COL7
john 1 1...