I know that you can insert multiple rows at once, is there a way to update multiple rows at once (as in, in one query) in MySQL?
Edit:
For example I have the following
Name id Col1 Col2
Row1 1 6 1
Row2 2 2 3
Row3 3 9 5
Row4 4 16 8
I want to combine all the following Updates into one query
UPDATE table SET Col1 = 1 WHERE id = 1;
UPDATE table SET Col1 = 2 WHERE id = 2;
UPDATE table SET Col2 = 3 WHERE id = 3;
UPDATE table SET Col1 = 10 WHERE id = 4;
UPDATE table SET Col2 = 12 WHERE id = 4;
Yes, that's possible - you can use INSERT ... ON DUPLICATE KEY UPDATE.
Using your example:
INSERT INTO table (id,Col1,Col2) VALUES (1,1,1),(2,2,3),(3,9,3),(4,10,12)
ON DUPLICATE KEY UPDATE Col1=VALUES(Col1),Col2=VALUES(Col2);
Since you have dynamic values, you need to use an IF or CASE for the columns to be updated. It gets kinda ugly, but it should work.
Using your example, you could do it like:
UPDATE table SET Col1 = CASE id
WHEN 1 THEN 1
WHEN 2 THEN 2
WHEN 4 THEN 10
ELSE Col1
END,
Col2 = CASE id
WHEN 3 THEN 3
WHEN 4 THEN 12
ELSE Col2
END
WHERE id IN (1, 2, 3, 4);
The question is old, yet I'd like to extend the topic with another answer.
My point is, the easiest way to achieve it is just to wrap multiple queries with a transaction. The accepted answer INSERT ... ON DUPLICATE KEY UPDATE is a nice hack, but one should be aware of its drawbacks and limitations:
As being said, if you happen to launch the query with rows whose primary keys don't exist in the table, the query inserts new "half-baked" records. Probably it's not what you want
If you have a table with a not null field without default value and don't want to touch this field in the query, you'll get "Field 'fieldname' doesn't have a default value" MySQL warning even if you don't insert a single row at all. It will get you into trouble, if you decide to be strict and turn mysql warnings into runtime exceptions in your app.
I made some performance tests for three of suggested variants, including the INSERT ... ON DUPLICATE KEY UPDATE variant, a variant with "case / when / then" clause and a naive approach with transaction. You may get the python code and results here. The overall conclusion is that the variant with case statement turns out to be twice as fast as two other variants, but it's quite hard to write correct and injection-safe code for it, so I personally stick to the simplest approach: using transactions.
Edit: Findings of Dakusan prove that my performance estimations are not quite valid. Please see this answer for another, more elaborate research.
Not sure why another useful option is not yet mentioned:
UPDATE my_table m
JOIN (
SELECT 1 as id, 10 as _col1, 20 as _col2
UNION ALL
SELECT 2, 5, 10
UNION ALL
SELECT 3, 15, 30
) vals ON m.id = vals.id
SET col1 = _col1, col2 = _col2;
All of the following applies to InnoDB.
I feel knowing the speeds of the 3 different methods is important.
There are 3 methods:
INSERT: INSERT with ON DUPLICATE KEY UPDATE
TRANSACTION: Where you do an update for each record within a transaction
CASE: In which you a case/when for each different record within an UPDATE
I just tested this, and the INSERT method was 6.7x faster for me than the TRANSACTION method. I tried on a set of both 3,000 and 30,000 rows.
The TRANSACTION method still has to run each individually query, which takes time, though it batches the results in memory, or something, while executing. The TRANSACTION method is also pretty expensive in both replication and query logs.
Even worse, the CASE method was 41.1x slower than the INSERT method w/ 30,000 records (6.1x slower than TRANSACTION). And 75x slower in MyISAM. INSERT and CASE methods broke even at ~1,000 records. Even at 100 records, the CASE method is BARELY faster.
So in general, I feel the INSERT method is both best and easiest to use. The queries are smaller and easier to read and only take up 1 query of action. This applies to both InnoDB and MyISAM.
Bonus stuff:
The solution for the INSERT non-default-field problem is to temporarily turn off the relevant SQL modes: SET SESSION sql_mode=REPLACE(REPLACE(##SESSION.sql_mode,"STRICT_TRANS_TABLES",""),"STRICT_ALL_TABLES",""). Make sure to save the sql_mode first if you plan on reverting it.
As for other comments I've seen that say the auto_increment goes up using the INSERT method, this does seem to be the case in InnoDB, but not MyISAM.
Code to run the tests is as follows. It also outputs .SQL files to remove php interpreter overhead
<?php
//Variables
$NumRows=30000;
//These 2 functions need to be filled in
function InitSQL()
{
}
function RunSQLQuery($Q)
{
}
//Run the 3 tests
InitSQL();
for($i=0;$i<3;$i++)
RunTest($i, $NumRows);
function RunTest($TestNum, $NumRows)
{
$TheQueries=Array();
$DoQuery=function($Query) use (&$TheQueries)
{
RunSQLQuery($Query);
$TheQueries[]=$Query;
};
$TableName='Test';
$DoQuery('DROP TABLE IF EXISTS '.$TableName);
$DoQuery('CREATE TABLE '.$TableName.' (i1 int NOT NULL AUTO_INCREMENT, i2 int NOT NULL, primary key (i1)) ENGINE=InnoDB');
$DoQuery('INSERT INTO '.$TableName.' (i2) VALUES ('.implode('), (', range(2, $NumRows+1)).')');
if($TestNum==0)
{
$TestName='Transaction';
$Start=microtime(true);
$DoQuery('START TRANSACTION');
for($i=1;$i<=$NumRows;$i++)
$DoQuery('UPDATE '.$TableName.' SET i2='.(($i+5)*1000).' WHERE i1='.$i);
$DoQuery('COMMIT');
}
if($TestNum==1)
{
$TestName='Insert';
$Query=Array();
for($i=1;$i<=$NumRows;$i++)
$Query[]=sprintf("(%d,%d)", $i, (($i+5)*1000));
$Start=microtime(true);
$DoQuery('INSERT INTO '.$TableName.' VALUES '.implode(', ', $Query).' ON DUPLICATE KEY UPDATE i2=VALUES(i2)');
}
if($TestNum==2)
{
$TestName='Case';
$Query=Array();
for($i=1;$i<=$NumRows;$i++)
$Query[]=sprintf('WHEN %d THEN %d', $i, (($i+5)*1000));
$Start=microtime(true);
$DoQuery("UPDATE $TableName SET i2=CASE i1\n".implode("\n", $Query)."\nEND\nWHERE i1 IN (".implode(',', range(1, $NumRows)).')');
}
print "$TestName: ".(microtime(true)-$Start)."<br>\n";
file_put_contents("./$TestName.sql", implode(";\n", $TheQueries).';');
}
UPDATE table1, table2 SET table1.col1='value', table2.col1='value' WHERE table1.col3='567' AND table2.col6='567'
This should work for ya.
There is a reference in the MySQL manual for multiple tables.
Use a temporary table
// Reorder items
function update_items_tempdb(&$items)
{
shuffle($items);
$table_name = uniqid('tmp_test_');
$sql = "CREATE TEMPORARY TABLE `$table_name` ("
." `id` int(10) unsigned NOT NULL AUTO_INCREMENT"
.", `position` int(10) unsigned NOT NULL"
.", PRIMARY KEY (`id`)"
.") ENGINE = MEMORY";
query($sql);
$i = 0;
$sql = '';
foreach ($items as &$item)
{
$item->position = $i++;
$sql .= ($sql ? ', ' : '')."({$item->id}, {$item->position})";
}
if ($sql)
{
query("INSERT INTO `$table_name` (id, position) VALUES $sql");
$sql = "UPDATE `test`, `$table_name` SET `test`.position = `$table_name`.position"
." WHERE `$table_name`.id = `test`.id";
query($sql);
}
query("DROP TABLE `$table_name`");
}
Why does no one mention multiple statements in one query?
In php, you use multi_query method of mysqli instance.
From the php manual
MySQL optionally allows having multiple statements in one statement string. Sending multiple statements at once reduces client-server round trips but requires special handling.
Here is the result comparing to other 3 methods in update 30,000 raw. Code can be found here which is based on answer from #Dakusan
Transaction: 5.5194580554962
Insert: 0.20669293403625
Case: 16.474853992462
Multi: 0.0412278175354
As you can see, multiple statements query is more efficient than the highest answer.
If you get error message like this:
PHP Warning: Error while sending SET_OPTION packet
You may need to increase the max_allowed_packet in mysql config file which in my machine is /etc/mysql/my.cnf and then restart mysqld.
There is a setting you can alter called 'multi statement' that disables MySQL's 'safety mechanism' implemented to prevent (more than one) injection command. Typical to MySQL's 'brilliant' implementation, it also prevents user from doing efficient queries.
Here (http://dev.mysql.com/doc/refman/5.1/en/mysql-set-server-option.html) is some info on the C implementation of the setting.
If you're using PHP, you can use mysqli to do multi statements (I think php has shipped with mysqli for a while now)
$con = new mysqli('localhost','user1','password','my_database');
$query = "Update MyTable SET col1='some value' WHERE id=1 LIMIT 1;";
$query .= "UPDATE MyTable SET col1='other value' WHERE id=2 LIMIT 1;";
//etc
$con->multi_query($query);
$con->close();
Hope that helps.
You can alias the same table to give you the id's you want to insert by (if you are doing a row-by-row update:
UPDATE table1 tab1, table1 tab2 -- alias references the same table
SET
col1 = 1
,col2 = 2
. . .
WHERE
tab1.id = tab2.id;
Additionally, It should seem obvious that you can also update from other tables as well. In this case, the update doubles as a "SELECT" statement, giving you the data from the table you are specifying. You are explicitly stating in your query the update values so, the second table is unaffected.
You may also be interested in using joins on updates, which is possible as well.
Update someTable Set someValue = 4 From someTable s Inner Join anotherTable a on s.id = a.id Where a.id = 4
-- Only updates someValue in someTable who has a foreign key on anotherTable with a value of 4.
Edit: If the values you are updating aren't coming from somewhere else in the database, you'll need to issue multiple update queries.
No-one has yet mentioned what for me would be a much easier way to do this - Use a SQL editor that allows you to execute multiple individual queries. This screenshot is from Sequel Ace, I'd assume that Sequel Pro and probably other editors have similar functionality. (This of course assumes you only need to run this as a one-off thing rather than as an integrated part of your app/site).
And now the easy way
update my_table m, -- let create a temp table with populated values
(select 1 as id, 20 as value union -- this part will be generated
select 2 as id, 30 as value union -- using a backend code
-- for loop
select N as id, X as value
) t
set m.value = t.value where t.id=m.id -- now update by join - quick
Yes ..it is possible using INSERT ON DUPLICATE KEY UPDATE sql statement..
syntax:
INSERT INTO table_name (a,b,c) VALUES (1,2,3),(4,5,6)
ON DUPLICATE KEY UPDATE a=VALUES(a),b=VALUES(b),c=VALUES(c)
use
REPLACE INTO`table` VALUES (`id`,`col1`,`col2`) VALUES
(1,6,1),(2,2,3),(3,9,5),(4,16,8);
Please note:
id has to be a primary unique key
if you use foreign keys to
reference the table, REPLACE deletes then inserts, so this might
cause an error
I took the answer from #newtover and extended it using the new json_table function in MySql 8. This allows you to create a stored procedure to handle the workload rather than building your own SQL text in code:
drop table if exists `test`;
create table `test` (
`Id` int,
`Number` int,
PRIMARY KEY (`Id`)
);
insert into test (Id, Number) values (1, 1), (2, 2);
DROP procedure IF EXISTS `Test`;
DELIMITER $$
CREATE PROCEDURE `Test`(
p_json json
)
BEGIN
update test s
join json_table(p_json, '$[*]' columns(`id` int path '$.id', `number` int path '$.number')) v
on s.Id=v.id set s.Number=v.number;
END$$
DELIMITER ;
call `Test`('[{"id": 1, "number": 10}, {"id": 2, "number": 20}]');
select * from test;
drop table if exists `test`;
It's a few ms slower than pure SQL but I'm happy to take the hit rather than generate the sql text in code. Not sure how performant it is with huge recordsets (the JSON object has a max size of 1Gb) but I use it all the time when updating 10k rows at a time.
The following will update all rows in one table
Update Table Set
Column1 = 'New Value'
The next one will update all rows where the value of Column2 is more than 5
Update Table Set
Column1 = 'New Value'
Where
Column2 > 5
There is all Unkwntech's example of updating more than one table
UPDATE table1, table2 SET
table1.col1 = 'value',
table2.col1 = 'value'
WHERE
table1.col3 = '567'
AND table2.col6='567'
UPDATE tableName SET col1='000' WHERE id='3' OR id='5'
This should achieve what you'r looking for. Just add more id's. I have tested it.
UPDATE `your_table` SET
`something` = IF(`id`="1","new_value1",`something`), `smth2` = IF(`id`="1", "nv1",`smth2`),
`something` = IF(`id`="2","new_value2",`something`), `smth2` = IF(`id`="2", "nv2",`smth2`),
`something` = IF(`id`="4","new_value3",`something`), `smth2` = IF(`id`="4", "nv3",`smth2`),
`something` = IF(`id`="6","new_value4",`something`), `smth2` = IF(`id`="6", "nv4",`smth2`),
`something` = IF(`id`="3","new_value5",`something`), `smth2` = IF(`id`="3", "nv5",`smth2`),
`something` = IF(`id`="5","new_value6",`something`), `smth2` = IF(`id`="5", "nv6",`smth2`)
// You just building it in php like
$q = 'UPDATE `your_table` SET ';
foreach($data as $dat){
$q .= '
`something` = IF(`id`="'.$dat->id.'","'.$dat->value.'",`something`),
`smth2` = IF(`id`="'.$dat->id.'", "'.$dat->value2.'",`smth2`),';
}
$q = substr($q,0,-1);
So you can update hole table with one query
Related
I have two tables, tableA and tableB. They are connected by a foreign key on their IDs (ATableID, BTableID).
TableB has a stored procedure that allows rows to be archived, It has 2 columns in it named Available_Days and Available_Night. In TableA
There is also columns Available_Days and Available_Night, which are joined to tableB by a left join. If there is data in those columns in TableA, you must not be able to archive the row in TableB.
This is the stored procedure currently, I need help implementing the criteria explained above.
#BTableID VARCHAR(500) = '',
#UserArchived INT = 0
AS
DECLARE #Local BTableID VARCHAR(500)
DECLARE #LocalUserArchived INT
DECLARE #LocalSql NVARCHAR(500)
set #Local BTableID = #BTableID;
set #LocalUserArchived = #UserArchived;
set #LocalSql = 'UPDATE tableB
SET DateArchived = GETDATE(),
UserArchived = '+CAST(#UserArchived as NVARCHAR)+'
WHERE BTableID IN ('+# BTableID +')'
I am also open for any suggestions if the current direction isn't wise.
For full context, this stored procedure will be used in php Laravel framework where a user will be able to delete a row(TableB), unless that rows information is referenced elsewhere(TableA), in which case, they will be prompted to update the other table before attempting to delete again.
Once again, the desired result is to prevent archiving/soft deleting (preventing setting DateArchived = GETDATE()) a row if its information is referenced in another table.
UPDATE:
I've made two possible adjustments (currently unable to test them as I'm not able to access the db at the moment.)
set #LocalSql = 'UPDATE BTable
SET DateArchived = GETDATE(),
UserArchived = '+CAST(#UserArchived as NVARCHAR)+'
WHERE BTableID IN ('+#BTableID+')
WHERE NOT EXISTS (
SELECT FROM ATable at
WHERE tp.ATable_FK = tp.BTableID)'
and
set #LocalSql = 'UPDATE tableB
SET DateArchived = GETDATE(),
UserArchived = '+CAST(#UserArchived as NVARCHAR)+'
WHERE tableBID IN ('+#tableBID+')
LEFT JOIN tableA cm ON cm.tableAID = tp.tableBID
WHERE cm.tableAID IS NULL’
I'm not able to test them at this time but will update this post to let you know if either did the job. If you have any suggestions on improvements please leave a comment or answer. :)
SOLUTION:
I figured out a very simple solution to solve my issue. I forgot all about the archive/soft delete stored procedures and created two stored procedures for table A and table B which selects one record from the table. ie :
#TableAIB int
AS
SELECT
TableBID,
TableBDescription,
FROM TableB
WHERE TableBID = #TableBID
RETURN ##ERRO
and
GO
#TableAID int
AS
SELECT
TableAID,
TabelADescritption
FROM TableA
WHERE TableAID = #TableAID
RETURN ##ERROR
GO
these two two tables are connected via a foreign key(on tableAID and tableBID).
in the controller I then did this:
public function archive(int $id)
{
$tableA = tableA::find($id);
$tableB = tableB::find($id);
if ($tableA->TableAID == $tableB->TableBID){
return redirect()->route(‘myPage.index')
->with('warning', ’This can not be archived, it is being used in another row. ');
}
}
This is essentially saying that if the two stored procedure's ID's match, redirect to the index page with a warning.
I Have some question about the Seq in PHP.
I create 1 tabel to maintain the sequence table,
ex. table is sequence and the field is seq(start from 1)
The sequence should be unique value.
The problem is.
there is 2 process which is run parallel that will use it.
and I got the error message that say duplicate value.
The question.
How to lock the table from another select query?
this is my code
//select seq
$sqlSeq = "select seq from sequence for update";
$resultSeq = pg_query($sqlSeq);
$rowSeq = pg_fetch_assoc($resultSeq);
$seqCif = $rowSeq['seq'];
//INSERT
$sqlInsert1 ="insert into TEST (customer_id) values( '".$seqCif."')";
//UPDATE
$sqlInsert1 .= "update sequence set seq=seq+1;" ;
Can you help me for this case?
Many Thanks befor..
One simple way to make the operation atomic and to guarantee an incremental id without gaps is to turn the statement to an insert ... select ... query:
insert into test(customer_id)
select coalesce(max(customer_id), 0) + 1 from test
I'm trying to run a pretty simple script that does the following: Takes the id of a content module and assigns it to multiple locations
So say I click the link on a content module with ID of 123, I want to assign it to all multiple locations. In SQL I would just say :
INSERT INTO table (cont_id,loc_id)
VALUES (123, select(id from location_table where active = 1))
I'm currently using this:
$pageID = $_GET['pageID'];
$assignPage = "
INSERT INTO locationContent(page_id, display_id)
VALUES ( '$pageID', select(id from locations where active = 1))
ON DUPLICATE KEY UPDATE active = 1
";
$performAssign = $mysqlConn->query($assignPage);
The issue I'm wondering about though, is do I need to put this into a foreach or while loop? If I were to just run as is, I feel like that would only work for one record
You seem to be looking for MySQL INSERT ... SELECT syntax.
From the documentation:
With INSERT ... SELECT, you can quickly insert many rows into a table from the result of a SELECT statement, which can select from one or many tables.
Query:
INSERT INTO locationContent (page_id, display_id)
SELECT ?, id FROM locations WHERE active = 1
ON DUPLICATE KEY UPDATE active = 1
The ? stands for parameter $pageID (you do want to use parameterized queries and prepared statement to protect your code against SQL injection).
You can't mix the INSERT INTO .. VALUES and INSERT INTO ... SELECT syntax, however SELECT constant, var FROM .. is possible like:
$assignPage = $mysqlConn->prepare("
INSERT INTO locationContent(page_id, display_id)
SELECT :page as page_id, id FROM locations WHERE active = 1
ON DUPLICATE KEY UPDATE active = 1
";
$performAssign = $assignPage->execute(array('page' =>$pageID));
i have an c++ program that sending POST of logs to my server and store it on database, the problem is that the checking of duplicates before insert a new row is not working, i think that the program send the POST very fast and there is no delay between the POSTS to the server so the Mysqli can't handle this, is there any solution from server client? maybe locking rows or something?
$date = date('Y-m-d', time());
$prep_select_qa = 'SELECT * from `logs` WHERE `guid` = ? AND `error_code` = ? AND `date_create` = ?';
$select_qa = $db->prepare($prep_select_qa);
$select_qa->bind_param('sss', $_POST['guid'], $_POST['error_code'], $date);
$select_qa->execute();
$select_qa->store_result();
$num_rows = $select_qa->num_rows;
if($num_rows == 0)
{
$prep_insert_qa = 'INSERT INTO `logs` (`type`, `guid`, `sent_by`, `class_and_method`, `api_method`, `error_code`, `error_text`, `date_create`) VALUES (?,?,?,?,?,?,?,?)';
$insert_qa = $db->prepare($prep_insert_qa);
$insert_qa->bind_param('ssssssss', $new, $_POST['guid'], $_POST['sentBy'], $_POST['classAndMethodName'], $_POST['APImethod'], $_POST['ErrorCode'], $_POST['ErrorText'], $date);
$insert_qa->execute();
$insert_qa->store_result();
}
First, the answer to your question is that you are retrieving all the rows in order to count them. Presumably, this requires reading all the data in the table and returning some of it (unless you have indexes). A faster method is to check the value returned by this query:
SELECT count(*)
FROM `logs`
WHERE `guid` = ? AND `error_code` = ? AND `date_create` = ?';
And an even faster method is not to count but to determine if any row exists:
SELECT EXISTS (SELECT 1
FROM `logs`
WHERE `guid` = ? AND `error_code` = ? AND `date_create` = ?'
)
This will return 1 if the row exists and 0 otherwise. Both of the above queries and your original query will benefit from having an index on guid, error_code, date_create.
In practice, you should follow Marvin's advice and use a unique index. This means the database does the checking via a unique index rather than the application. One very important reason is a race condition. If two users are inserting the same row at the same time, both might execute the if statement, find there are no matching rows in the table, and then insert duplicate rows.
The SELECT scheme must be enclosed in a BEGIN...COMMIT transaction and have FOR UPDATE on it. Otherwise, some other connection can slip in and defeat your check.
Instead, try to do it in a single, atomic, instruction:
Once you have an INDEX that will prevent duplicates...
INSERT IGNORE -- Silently does nothing if it is a dup.
INSERT...ON DUPLICATE KEY UPDATE -- Lets you change something as you try to insert a dup.
Also, the INSERT solutions will be faster (which was your original question).
Let me explain what I need and canot get :(
I have to DB one i main the other is just getting part of data from the firs one.
This is my code:
foreach($id_product_array AS $id_product) {
$resultf = mysql_query("SELECT * FROM db1_available_product WHERE id_product='".$id_product."'");
while($rowi = mysql_fetch_array($resultf)) {
$aa1=$rowi['id_product'];
$aa2=$rowi['date'];
$aa3=$rowi['available'];
$aa4=$rowi['published'];
mysql_query("INSERT INTO aa_bb.db2_available_product (`id_product`, `date`, `available`, `published`) VALUES ('".$aa1."','".$aa2."', '".$aa3."', '".$aa4."') ON DUPLICATE KEY UPDATE `id_product` = '".$aa1."', `date` = '".$aa2."', `available` = '".$aa3."', `published` = '".$aa4."'");
}
The problem is that this multiples the record in DB2 so I am now in millions!!!
Its set up as cron job on 1h basis.
What I need is ether it checks what is existing and don't touch it or if need on update or insert.
The other solution would be to delete the whole table in DB2 then to insert a fresh one from DB1
You can simplify your query like so:
INSERT INTO tbl2 (column1, column2)
SELECT column1, column2 FROM tbl1
ON DUPLICATE ...
See the documentation
You are looking for MySQL's proprietary REPLACE command. It has the same syntax as a regular INSERT, but it checks for duplicate primary key before inserting, and if it is found it will do an UPDATE instead:
REPLACE works exactly like INSERT, except that if an old row in the
table has the same value as a new row for a PRIMARY KEY or a UNIQUE
index, the old row is deleted before the new row is inserted.
Of course you will have to define a unique PK/index on your table that allows this functionality to work.
here is an update!
I solved the problem :)
Thanks s to Niels because he made me rethink my strategy so the solution was simple.
In the DB1 and DB2 there is and ID filed
A added
$aa5=$rowi['id'];
so that made ON DUPLICATE KEY UPDATE work correctly!
foreach($id_product_array AS $id_product) {
$resultf = mysql_query("SELECT * FROM db1_available_product WHERE id_product='".$id_product."'");
while($rowi = mysql_fetch_array($resultf)) {
$aa5=$rowi['id'];
$aa1=$rowi['id_product'];
$aa2=$rowi['date'];
$aa3=$rowi['available'];
$aa4=$rowi['published'];
mysql_query("INSERT INTO aa_bb.db2_available_product (`id`,`id_product`, `date`, `available`, `published`) VALUES ('".$aa5."','".$aa1."','".$aa2."', '".$aa3."', '".$aa4."') ON DUPLICATE KEY UPDATE `id` = '".$aa5."',`id_product` = '".$aa1."', `date` = '".$aa2."', `available` = '".$aa3."', `published` = '".$aa4."'");
}
and it seams that it is working OK!
:)