I have the following query:
REPLACE INTO `oxarticles`
SET
OXID = '10-1010',
oxartnum = '10-1010',
oxtitle = 'Dummy',
oxprice = '10.000000',
oxstock = '100',
importstatus = 1"
This works so far as expected, but the fields I do not specifiy, are just overwritten with ' ' / empty string. From what I read, should this syntax work identically like the UPDATE-command.
Am I missing something? How can I prevent that fields are replaced with '' ?
Edit 1
Just to clarify, I can't just use UPDATE. I am setting a flag (importstatus) to 0 before every run and during the import to 1. After the import finishes, I delete all articles, which are still on status 0.
// Just for the compeletion, here is the PHP-snippet:
while (!feof($this->handle))
{
$row = fgetcsv($this->handle, 0, ";");
$sSql = "REPLACE INTO oxarticles SET "
. " OXID = '" . $row[0] . "', "
. " oxartnum = '" . $row[0] . "', "
. " oxtitle = '" . $row[1] . "', "
. " oxprice = '" . str_replace(",", ".", $row[4]) . "', "
. " oxstock = '" . str_replace(",", ".", $row[5]) . "', "
. " importstatus = 1";
// $sSql = "UPDATE oxarticles SET oxtitle ='" . $row[1] . "', oxprice='" . $row[4] . "', oxstock='" . $row[5] . "' WHERE oxartnum ='".$row[0]."'";
$this->db->execute($sSql);
}
From the mysql documentation:
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. See
Section 13.2.5, “INSERT Syntax”.
In other words, the row is being deleted and then inserted, hence your old values aren't staying intact. Perhaps you could select the original row first, and feed those values back in where appropriate.
You query will replace old data into new data if you do not provide data for a field it will set to null . If you do not want to loose your data just want to update field use on duplicate key update.
If did't found any match it will insert new row
If found it will replace data if provide
INSERT INTO table (id,a,b,c,d,e,f,g) VALUES (1,2,3,4,5,6,7,8) ON
DUPLICATE KEY
UPDATE a=a, b=b, c=c, d=d, e=e, f=f, g=g;
$updateSeats = mysql_query("UPDATE FORM_dateAndSeating SET NumberOfSeats = " . $removeSeatingNumber . " WHERE DATE = " . $revertToStandardDate);
In the code above I am trying to update the value within the MYSQL table.
When I echo the variables they show the data I am expecting, however the database is not being updated.
There is no error being returned either.
What are other possibilities for the sql not to update properly??
This will work:
$updateSeats = mysql_query("UPDATE FORM_dateAndSeating
SET NumberOfSeats = '" . $removeSeatingNumber . "'
WHERE DATE = '" . $revertToStandardDate . "'");
Long form:
$updateSeats = mysql_query("UPDATE FORM_dateAndSeating SET NumberOfSeats = '" . $removeSeatingNumber . "' WHERE DATE = '" . $revertToStandardDate . "'");
The variables need to be inside double quotes including single quotes
I.e.: '" . $removeSeatingNumber . "' WHERE DATE = '" . $revertToStandardDate . "'
-------^ --------------------------------------------^ -----------------------^ ----------------------------------------------^
Add apostrophes around your column values.
I am using pretty much all variables in my query and i am pretty sure my syntax is wrong somewhere. I have tried a lot of different ways to setup my query. Basically im trying to update a specific row with the id, and the column that is the variable $loc.
mysqli_query($con,"UPDATE `" . $tbvbr . "` SET $loc='".$addscore."' WHERE pid='".$pn."' ");
i also tried
mysqli_query($con,"UPDATE `" . $tbvbr . "` SET $loc='$addscore' WHERE pid='$pn' ");
and
mysqli_query($con,"UPDATE `" . $tbvbr . "` SET $loc=$addscore WHERE pid=$pn ");
Thanks
$sql = "UPDATE `" . $tbvbr . "` SET " . $loc . " = '" . $addscore . "' WHERE pid= '" . $pn . "'";
mysqli_query($con,$sql);
Does this work?
mysqli_query($con,"UPDATE ".$tbvbr." SET ".$loc." = '".$addscore."' WHERE pid = ".$pn);
I'm trying to update two rows in my database using a query (which is going to be run from a PHP script) and there is just one Condition (WHERE). What I've tried is:
$sql = 'UPDATE ' . CANNED_MESSAGES . "
SET canned_message_content = '" . $db->sql_escape($content) . "',
canned_message_title = '" . $db->sql_escape($title) . "'
WHERE id = '" . intval($id) . "'" ;
$db->sql_query($sql);
Can you tell me whats wrong with my query? :)
This may be due to Quotes mismatch. Please use this
$sql = "UPDATE '" . CANNED_MESSAGES ."'
SET canned_message_content = '" . $db->sql_escape($content) . "',
canned_message_title = '" . $db->sql_escape($title) . "'
WHERE id = '" . intval($id) . "' " ;
I highly doubt that two rows can have the same id column. Do they? If not, how could you update 2 rows by specifying a condition on a column with such a constraint?
Ok, I am querying my DB for a file. And I want to use a PHP global variable and stick it somewhere in that output using say a '$dir' in my table. Any possible way to do so?
Just use it in a string for the query like you would in any other string. eg:
$sql = "UPDATE TABLE x SET dir=" . $dir . " WHERE id=" . $id;
Though if you do this and your variables use user input it's VERY IMPORTANT to sanitize them against SQL injection and such. The function mysql_real_escape_string() is provided for just such instances.
$sql = "UPDATE TABLE x SET dir=" . mysql_real_escape_string($dir) . " WHERE id=" . mysql_real_escape_string($id);
$query = "SELECT '" . $dir . "' as myVariable, userName, userpassword from users where userName = ...."
The first reply was missing some quotes:
$sql = "UPDATE TABLE x SET dir=" . $dir . " WHERE id=" . $i
->
$sql = "UPDATE TABLE x SET dir='" . mysql_real_escape_string($dir) . "' WHERE id=" . $i
and
$sql = "UPDATE TABLE x SET dir=" . mysql_real_escape_string($dir) . " WHERE id=" . mysql_real_escape_string($id);
->
$sql = "UPDATE TABLE x SET dir='" . mysql_real_escape_string($dir) . "' WHERE id=" . mysql_real_escape_string($id);