Optimalize sql syntax - php

Question

I have this 3 sql questions:
$producent = mysql_fetch_array(mysql_query("
SELECT FieldValue
FROM `xy8vx_rsform_submission_values`
WHERE SubmissionId = '$id' AND FieldName = 'Producent'
"));
$model = mysql_fetch_array(mysql_query("
SELECT FieldValue
FROM `xy8vx_rsform_submission_values`
WHERE SubmissionId = '$id' AND FieldName = 'Model'
"));
$nr_ser= mysql_fetch_array(mysql_query("
SELECT FieldValue
FROM `xy8vx_rsform_submission_values`
WHERE SubmissionId = '$id' AND FieldName = 'Nr seryjny'
"));
Is it posible to get those 3 values with one sql question?

Answer 1

Yes, use IN clause.
SELECT FieldName , FieldValue
FROM `xy8vx_rsform_submission_values`
WHERE SubmissionId = '$id' AND FieldName IN ('Producent', 'Model', 'Nr seryjny')
And of course you need to use a loop to fetch the result.
// $sql is the above sql
$res = mysql_query($sql);
$result = array();
while ($row = mysql_fetch_assoc($res)) {
$result[$row['FieldName']] = $row['FieldValue'];
}
print_r($result);

Answer 2

To fetch the 3 values in 3 rows:
SELECT FieldValue
FROM `xy8vx_rsform_submission_values`
WHERE SubmissionId = '$id' AND
FieldName in ('Producent', 'Model', 'Nr seryjny')
or, to fetch the 3 values in 3 columns:
SELECT
(SELECT FieldValue
FROM `xy8vx_rsform_submission_values`
WHERE SubmissionId = '$id' AND FieldName = 'Producent') as Producent,
(SELECT FieldValue
FROM `xy8vx_rsform_submission_values`
WHERE SubmissionId = '$id' AND FieldName = 'Model') as Model,
(SELECT FieldValue
FROM `xy8vx_rsform_submission_values`
WHERE SubmissionId = '$id' AND FieldName = 'Nr seryjny') as NrSeryjny

Answer 3

Learn to and use the SQL IN operator.

Answer 4

$id_1=x;
$id_2=y;
$id_3=z;
$name_1="NAME X";
$name_2="NAME Y";
$name_3="NAME Z";
SELECT FieldValue
FROM `xy8vx_rsform_submission_values`
WHERE ((SubmissionId = $id_1 AND FieldName = $name_1) or (SubmissionId = $id_2 AND FieldName = $name_2) or (SubmissionId = $id_3 AND FieldName = $name_3));
Now, you have to fetch your result into an array of 3 rows.

Answer 5

a single query will produce result of these 3 query
$producent = mysql_fetch_array(mysql_query("
SELECT FieldValue
FROM `xy8vx_rsform_submission_values`
WHERE SubmissionId = '$id' AND (FieldName = 'Producent' OR FieldName = 'Model' OR FieldName = 'Nr seryjny')
"));