MySQL - Insert intro if exist update - php

Question

I have unknown keys and values to import to database from CSV.
My code is
while($data = fgetcsv($handle,1000,",",'"'))
{
$data=array_map('addslashes',$data); // apply addslashes() to all values
$data=array_combine($csv_fields,$data); // csv fields assoc (key=>value)
$data=array_intersect_key($data,$tbl_fields); // discard redundant
$tbl_fields_str=implode("`,`",array_keys($data));
$tbl_vals_str=implode("','",array_values($data));
$q="INSERT INTO `cmid` (`cmid`,`$tbl_fields_str`) VALUES ('$cmidtrenutni','$tbl_vals_str') ON DUPLICATE KEY UPDATE (`$tbl_fields_str`) VALUES ('$tbl_vals_str')";
$conn->query($q);
}
I need to insert and if exist, update.
I try this code above but doesnt work.
I find something like http://dev.mysql.com/doc/refman/5.5/en/insert-on-duplicate.html
But this doesnt help in my way cause my table doesnt have defined fields. Keys and values are different on every input.
Any solution how to do this?

Answer 1

This is your query:
INSERT INTO `cmid` (`cmid`, `$tbl_fields_str`)
VALUES ('$cmidtrenutni', '$tbl_vals_str')
ON DUPLICATE KEY UPDATE (`$tbl_fields_str`) VALUES ('$tbl_vals_str');
The problem is the UPDATE part. You need to split the values so it looks like:
INSERT INTO `cmid` (`cmid`, `$tbl_fields_str`)
VALUES ('$cmidtrenutni', '$tbl_vals_str')
ON DUPLICATE KEY UPDATE
col1 = newcol1val,
col2 = newcol2val,
. . .
The short-hand that you are using is not valid syntax.

Answer 2

To import from a csv file, take a look at the LOAD DATA INFILE statement or the mysqlimport utility.

Answer 3

Try this one:
$q="INSERT INTO `cmid` (`cmid`,`$tbl_fields_str`) VALUES ('$cmidtrenutni','$tbl_vals_str') ON DUPLICATE KEY UPDATE cmid=cmid";
But I prefer using INSERT IGNORE for your problem:
$q="INSERT IGNORE INTO `cmid` (`cmid`,`$tbl_fields_str`) VALUES ('$cmidtrenutni','$tbl_vals_str')";

Answer 4

You cannot have "unknown" columns in mysql DB. if you want to store pairs of key-value in a mysql table, you should have a table with two columns : one would be named "key" and the other one "value". Add an extra column "cmid" to group your pairs.
This table should have a primary index on "cmid" and "key" columns.
Then you should insert values with a query like:
$sqlVals = "";
foreach ($data as $key => $val) {
$sqlVals .= "($cmidtrenutni, $key, $val),";
}
$sqlVals = substr($sqlVals, 0, -1); //remove last comma.
$query = "REPLACE INTO `myTable` (`cmid`, `key`,`value`) VALUES $sqlVals";