My entry form I have an inventory database with tables like aluminium, iron etc... Each table contains a subcategory of items like aluminium_pala, iron_1.5inch and so on. The entry code is like this:
include("dbConnect.php");
$orderNo = $_POST["number"];
if(isset($_POST["mat1"])&&$_POST["mat1"]!=NULL)
{
$mat1 = $_POST["mat1"];
$selmat1 = $_POST["selmat1"];
$amtmat1 = $_POST["amtmat1"];
$query = "INSERT INTO $mat1 ($selmat1,orderNo) VALUES (-$amtmat1,$orderNo);";
if(!($result = $mysqli->query($query)))
print "<div class='error'>insertion failed. Check your data</div>";
}
if(isset($_POST["mat2"])&&$_POST["mat2"]!=NULL)
{
$mat2 = $_POST["mat2"];
$selmat2 = $_POST["selmat2"];
$amtmat2 = $_POST["amtmat2"];
$query = "INSERT INTO $mat2 ($selmat2,orderNo) VALUES (-$amtmat1,$orderNo);";
if(!($result = $mysqli->query($query)))
print "<div class='error'>insertion failed. Check your data</div>";
}... and it goes on till mat11
I am trying to collect each similar table (mat1, mat2..) and their corresponding item (selmat1, selmat2...) and bunch the all in one query. That is, instead of going
INSERT INTO al_openable (zPala,orderNo) VALUES (23,14);
INSERT INTO al_openable (outer,orderNo) VALUES (50,14);
I am trying to execute it like
INSERT INTO al_openable (zPala,outer,orderNo) VALUES (23,50,14);
I need this to avoid duplicate foreign key entry(for $orderNo). One idea I've been considering is to use UPDATE if the order number is pre-existing. Do you guys think this is a good idea? And if so, what will be the best way to execute it? If not, how would a more experienced programmer solve this conundrum?
I think this question is related to your query: Multiple Updates in MySQL
You may use ON DUPLICATE KEY UPDATE in combination with INSERT statement.
Related
Here i have made a function to produce random key,
function gen_link(){
$link = '';
$s = 'abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789';
for ($i= 0 ; $i <= 4 ; $i++)
$link = $link.$s[rand(0,63)];
return $link;
}
I dont want to repeat the key in mysql table, i have made it unique in mysql, but what i want to do is, when the key already exists i want to regenerate another random key and try to add it to table again, i tried this code below.
$con = mysqli_connect("localhost","shashi","asd123","redir");
$sql = " insert into 'links' ('link') values('$link') ";
do{
$link = gen_link();
$result = mysqli_query($con,$sql);
}while(mysqli_errno($con)==1064);
mysqli_close($con);
but it doesn't seem to work at all, it keeps looping. what can i do?
Instead of generating an actual error, use an INSERT IGNORE query like this:
$sql = "insert ignore into `links` (`link`) values ('$link')";
And check mysqli_affected_rows() to ensure something was actually inserted:
while (mysqli_affected_rows($con) == 0);
All together, that looks like this:
$con = mysqli_connect("localhost", "shashi", "asd123", "redir");
do {
$link = gen_link();
$sql = "insert ignore into `links` (`link`) values ('$link')";
$result = mysqli_query($con, $sql);
} while (mysqli_affected_rows($con) == 0);
mysqli_close($con);
Also, a couple notes about your queries:
I changed your quotes around the table and column names to backticks, which is the correct way to quote them in sql.
Because you're including the $link variable directly in the query, you need to define your query after you give the $link variable a value - so I moved that line inside the loop. This is probably the source of your original problem where you kept looping.
It's not important in this instance because you have full control of the value you're inserting (generated in gen_link()), but it's a good idea to get in the habit of properly escaping the variables you insert into a query. Alternatively, read up a bit on prepared statements, and use them instead.
Get the existing key values from the DB as array. Then search your current key with your existing keys using in_array() function. If it is true generate new key. If the condition is false , insert your new key.
http://php.net/manual/en/function.in-array.php
if(in_array($new_key,$existing))
{
//generate new key
}
else
{
//insert current key
}
I'm working with Prepared Statement an using "ON DUPLICATE KEY", to change the duplicate Value with MYSQL:
$sql = "INSERT INTO ".$this->table." ".
"(".implode(',',$fields).") VALUES
(".implode(',',$values).")
ON DUPLICATE KEY
UPDATE key_field = concat(substr(key_field,1,".($laenge_key-3)."),FORMAT(FLOOR(RAND()*999),0))
I have one problem here, and I don't even have clue what to Google and how to solve this.
I am making PHP application to export and import data from one MySQL table into another. And I have problem with these tables.
In source table it looks like this:
And my destination table has ID, and pr0, pr1, pr2 as rows. So it looks like this:
Now the problem is the following: If I just copy ( insert every value of 1st table as new row in second) It will have like 20.000 rows, instead of 1000 for example.
Even if I copy every record as new row in second database, is there any way I can fuse rows ? Basically I need to check if value exists in last row with that ID_, if it exist in that row and column (pr2 for example) then insert new row with it, but if last row with same ID_ does not have value in pr2 column, just update that row with value in pr2 column.
I need idea how to do it in PHP or MySQL.
So you got a few Problems:
1) copy the table from SQL to PHP, pay attention to memory usage, run your script with the PHP command Memory_usage(). it will show you that importing SQL Data can be expensive. Look this up. another thing is that PHP DOESNT realese memory on setting new values to array. it will be usefull later on.
2)i didnt understand if the values are unique at the source or should be unique at the destination table.. So i will assume that all the source need to be on the destination as is.
I will also assume that pr = pr0 and quant=pr1.
3) you have missmatch names.. that can also be an issue. would take care of that..also.
4) will use My_sql, as the SQL connector..and $db is connected..
SCRIPT:
<?PHP
$select_sql = "SELECT * FROM Table_source";
$data_source = array();
while($array_data= mysql_fetch_array($select_sql)) {
$data_source[] = $array_data;
$insert_data=array();
}
$bulk =2000;
foreach($data_source as $data){
if(isset($start_query) == false)
{
$start_query = 'REPLACE INTO DEST_TABLE ('ID_','pr0','pr1','pr2')';
}
$insert_data[]=implode(',',$data).',0)';// will set 0 to the
if(count($insert_data) >=$bulk){
$values = implode('),(',$insert_data);
$values = substr(1,2,$values);
$values = ' VALUES '.$values;
$insert_query = $start_query.' '.$values;
$mysqli->query($insert_query);
$insert_data = array();
} //CHECK THE SYNTAX IM NOT SURE OF ALL OF IT MOSTLY THE SQL PART>> SEE THAT THE QUERY IS OK
}
if(count($insert_data) >=$bulk) // IF THERE ARE ANY EXTRA PIECES..
{
$values = implode('),(',$insert_data);
$values = substr(1,2,$values);
$values = ' VALUES '.$values;
$insert_query = $start_query.' '.$values;
$mysqli->query($insert_query);
$insert_data = null;
}
?>
ITs off the top off my head but check this idea and tell me if this work, the bugs night be in small things i forgot with the QUERY structure, print this and PASTE to PHPmyADMIN or you DB query and see its all good, but this concept will sqve a lot of problems..
I'm in a bit of a pickle here, its just that I'm trying to enter some data that I get from users into a table, but for some reason it won't let me insert the data, however I have exactly the same query for another part of the table and that seems to work perfectly fine.
for example when I execute this query, it doesn't work:
$updateibtask2 = "UPDATE ibtask_task2_75beep SET
Trial1_tone_actual= '$taskerror[0]', Trial2_tone_actual= '$taskerror[1]', Trial3_tone_actual= '$taskerror[3]',
Trial4_tone_actual= '$taskerror[4]', Trial5_tone_actual= '$taskerror[5]', Trial6_tone_actual= '$taskerror[6]',
Trial7_tone_actual= '$taskerror[7]', ... WHERE user_id = '$memberid'";
However, when I try this query it works perfectly fine:
$updateibtask2_estimate = "UPDATE ibtask_task2_75beep SET
Trial1_tone_estimate= '$taskerror[0]', Trial2_tone_estimate= '$taskerror[1]', Trial3_tone_estimate= '$taskerror[3]',
Trial4_tone_estimate= '$taskerror[4]', Trial5_tone_estimate= '$taskerror[5]', Trial6_tone_estimate= '$taskerror[6]',
Trial7_tone_estimate= '$taskerror[7]', ... WHERE user_id = '$memberid'";
I'm just wondering where I'm going wrong?
Also if it helps the PHP code that I'm using to run these queries are:
$task2 = array();
$task2 = $_SESSION['task2'];
$task2estimate = array();
$task2estimate = $_SESSION['estimatedpress2'];
$task2actual = array();
$task2actual = $_SESSION['actualpress2'];
addacutalerror_75($memberid, $task2actual);
addestimatederror_75($memberid, $task2estimate);
Also to check whether there was data present for $task2actual I had done an echo ..[0], .. [1].. etc and there was data present in the array.
Updated
For those who are searching for solutions and have the same problem, here's what I did:
function addacutalerror_75($memberid, $task2actual) {
$insertmember = "INSERT INTO ibtask_task2_75beep (user_id, Trial1_tone_actual,
Trial2_tone_actual, Trial3_tone_actual, Trial13_tone_actual,
Trial14_tone_actual, ..., Trial40_notone_actual) VALUES ('$memberid', '$task2actual[0]', '$task2actual[1]', '$task2actual[3]', '$task2actual[18]', '$task2actual[21]', '$task2actual[22]', '..., '$task2actual[24]', '$task2actual[29]', '$task2actual[33]','$task2actual[38]' )";
mysql_query($insertmember) or die(mysql_error());
}
by the way, UPDATE is very different from INSERT.
UPDATE - modify the existing record(s) on the table.
INSERT - adds new record(s) on the table.
Your query is fine but you are doing update. But you want to insert record not to update record right? The query when you insert record looks like this,
$updateibtask2 = "INSERT INTO ibtask_task2_75beep
(Trial1_tone_actual, Trial2_tone_actual,
Trial3_tone_actual,...)
VALUES ('$taskerror[0]', '$taskerror[1]',...)";
and your query is vulnerable with SQL Injection. Please take time to read the article below to protect against SQL injection,
Best way to prevent SQL injection in PHP?
I am having problems with the following code, it seems to work and creates the records just fine, the problem is each time I hit submit, instead of it updating the record it just creates a new one. If I turn off auto incremental for the primary key it updates the record just fine but then doesn't create any new ones, it seems either one or the other :-S
<?php
$query = mysql_query("
INSERT INTO hqfjt_chronoforms_data_emailform
(cf_id,cf_uid,emailformname,datesent)
VALUES
('$_POST[cf_id]','$_POST[cf_uid]','$_POST[emailformname]','$_POST[datesent]')
ON DUPLICATE KEY UPDATE
datesent='$_POST[datesent]';
") or die(mysql_error());
?>
did you already try to echo your query string? guess the variable replacement inside it is wrong. try something like that for debugging:
<?php
$sql = "INSERT INTO hqfjt_chronoforms_data_emailform
(cf_id,cf_uid,emailformname,datesent)
VALUES
('{$_POST['cf_id']}','{$_POST['cf_uid']}','{$_POST['emailformname']}','{$_POST['datesent']}')
ON DUPLICATE KEY UPDATE
datesent='{$_POST['datesent']}'";
echo $sql; // for debugging
$query = mysql_query($sql) or die(mysql_error());
?>
Note the corrected variable names above. (curly braces around it, quotes around the array index)
I can't imagine it's the problem, but does the same thing happen when you cast the ID to an int and leave out the quotes?
<?php
$query = mysql_query("
INSERT INTO hqfjt_chronoforms_data_emailform
(cf_id,cf_uid,emailformname,datesent)
VALUES
(" . (int) $_POST['cf_id'] . ",'$_POST[cf_uid]','$_POST[emailformname]','$_POST[datesent]')
ON DUPLICATE KEY UPDATE
datesent='$_POST[datesent]';
") or die(mysql_error());
?>
By the way, you really shouldn't use your $_POST variables in your query without mysql_real_escape_string or better yet, use prepared statements (PDO or mysqli).
I have a table in MySQL with "text", "date_posted", and "user". I currently query all text from user=Andy, and call those questions. All of the other text fields from other users are answers to the most recent question.
What I want is to associate those answers with the most recent question, with a loop similar to "for each text where user=Andy, find the text where user!=Andy until date>the next user=Andy (question)"
This seems awfully contrived, and I'm wondering if it can be done roughly as I've outlined, or if I can save myself some trouble in how I'm storing the data or something.
Thanks for any advice.
EDIT: I've added in the insert queries I've been using.
$url = "http://search.twitter.com/search.json?q=&ands=&phrase=&ors=¬s=RT%2C+%40&tag=andyasks&lang=all&from=amcafee&to=&ref=&near=&within=1000&units=mi&since=&until=&tude%5B%5D=%3F&rpp=50)";
$contents = file_get_contents($url);
$decode = json_decode($contents, true);
foreach($decode['results'] as $current) {
$query = "INSERT IGNORE INTO andyasks (questions, date, user) VALUES ('$current[text]','$current[created_at]','Andy')";
mysql_query($query);
}
$url2 = "http://search.twitter.com/search.json?q=&ands=&phrase=&ors=¬s=RT&tag=andyasks&lang=all&from=&to=amcafee&ref=&near=&within=15&units=mi&since=&until=&rpp=50";
$contents2 = file_get_contents($url2);
$decode2 = json_decode($contents2, true);
foreach($decode2['results'] as $current2) {
$query2 = "INSERT IGNORE INTO andyasks (questions, date, user) VALUES ('$current2[text]','$current2[created_at]','$current2[from_user]')";
mysql_query($query2);
}
And then on the SELECT side, this is where I am currently:
$results = mysql_query("SELECT * FROM andyasks");
$answers = mysql_query("SELECT * FROM andyasks WHERE 'user' != 'Andy'");
while($row = mysql_fetch_array($results))
{
if ($row['user'] == 'Andy') {
print(preg_replace($pattern, $replace, "<p>".$row["questions"]."</p>"));
}
}
while($row = mysql_fetch_array($answers))
{
print(preg_replace('/#amcafee/', '', "<p>".$row["questions"]."</p>"));
}
What you have in mind could, I believe, be done with subtle use of JOIN or nested SELECT, ORDER BY, LIMIT, etc, but, as you surmise, it would be "awfully contrived" and likely pretty slow.
As you suspect, you would save yourself a lot of trouble at SELECT time if you added a column to the table, which, for answers, has the primary key of the question they're answering (that could be easily obtained at INSERT time, since it's the latest entry with user equal Alex). Then the retrieval would be easier!
If you can alter your schema this way, but need help with the SQL, pls comment or edit your answer to indicate that and I'll be happy to follow up (similarly, I'd be happy to follow up if you're stuck with this schema and need the "awfully contrived" SQL -- I just don't know which of the two possibilities applies!-).
Edit: since the schema's changed, the INSERT could be (using form :name to indicate parameters you should bind):
INSERT IGNORE INTO andyasks
(questions, date, user, answering)
SELECT :text, :created_at, :from_user,
IF(:from_user='Andy', NULL, aa.id)
FROM andyasks AS aa
WHERE user='Andy'
ORDER BY date DESC
LIMIT 1
i.e.: use INSERT INTO ... SELECT' to do a query-within-insertion, which picks the latest post by Andy. I'm assuming you do also have a primary keyid` that's auto-increment, which is the normal arrangement of things.
Later to get all answers to a given question, you only need to select rows whose answering attribute equals that question's id.
If I understand you correctly you want something like:
$myArr = array("bob","joe","jennifer","mary");
while ($something = next($myArr)) {
if ($nextone = next($myArr)) {
//do Something
prev($myArr)
}
}
see http://jp2.php.net/next as well as the sections on prev, reset and current