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How can I insert data into a table from two other tables in mysql?

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How can I insert data into one table from two other tables where i have three tables namely users, role and userrole.
Now I want to insert the data into userrole table from users table and role table with a single statement.

posted May 2, 2017 by Arunagames1 Dec

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1 Answer

0 votes

Your question is not complete so answering based on the information what we have -

You need to use
INSERT INTO ...SELECT statement for insertion in the table 3.

Something like

INSERT INTO userrole (column1, column2, column3)
SELECT user.column1, user.column2, role.column3
FROM user, role
WHERE user.column1 = role.column1;
answer May 2, 2017 by Salil Agrawal
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{
if (filter_var($data[$i][1], FILTER_VALIDATE_EMAIL)){
echo $data[$i][1];
$email=$data[$i][1];
$conn = mysqli_connect($dbhost,$dbuser,$dbpass, $dbname);
if ($conn->connect_error) {
  die("Connection failed: " . $conn->connect_error);
}
$sql ="INSERT INTO promo_user (uid,name,email) VALUES (,'', '$email')";
mysqli_query($sql,$conn);
mysqli_close($conn);

I am using the above code but there is something wrong with it,whenever i run the code the echo is working fine but the content does go into sql table

Please help

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