I have a table "data" with a column "name" "state" and a few more
name state
peter MN
john NY
jay NY
sam CO
jack TX
jill NO
I want to calculate the number of entries per state and want my output as follows for example:
NY: 125
MN: 21
CO: 17
TX: 10
NO: 59
etc...
I have a query like this
$stmt = $db->query("SELECT state, COUNT(*) FROM `data` GROUP BY state;");
$nums = $stmt->rowCount();
while ($row = $stmt->fetch(PDO::FETCH_ASSOC)){
echo "<tr>
<td>" . $row["state"] . "</td>
<td>$nums</td>
</tr>";
}
This displays every state in my table but does not return the corresponding number of entries for that state. This only returns the number of states ie 50. How can I display the number of entries per state?
$stmt = $db->query("SELECT COUNT(name) as occurances,state FROM `data` GROUP BY state;");
while ($row = $stmt->fetch(PDO::FETCH_ASSOC)){
echo "<tr>
<td>" . $row["occurances"] . "</td>
<td>" . $row["state"] . "</td>
</tr>";
}
Try this version,select the names only
You seem not to be referring to the column which has the count. Try aliasing it an referencing the alias in your PHP code:
$stmt = $db->query("SELECT state, COUNT(*) cnt FROM `data` GROUP BY state;");
while ($row = $stmt->fetch(PDO::FETCH_ASSOC)) {
echo "<tr>
<td>" . $row["state"] . ":</td>
<td>" . $row["cnt"] . "</td>
</tr>";
}
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