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I’m trying to learn more with SQL and I am trying to INSERT a List of Numbers linked with 1 ID (row).

Now I figured out how to use List in SELECT, basics like

SELECT * FROM products WHERE catalog_number IN ("CAT1", "CAT2", "CAT3");

and I am trying to do a similar thing but with INSERT

Something like this but this won’t work, sadly.

INSERT INTO link_products ('main_product_id', 'linked_product_id') VALUES (124, IN(1,2,3,4,))

Basicly I am trying to do like php foreach command fully in SQL (in phpmyadmin) and I am not even sure if this is possible.

The result should be (in database):

id | main_product_id | linked_product_id
1          124               1
2          124               2
3          124               3
4          124               4 

3

Answers


  1. Just insert the data like:

    INSERT INTO link_products ('main_product_id', 'linked_product_id') 
    VALUES (124, 1)
          ,(124, 2)
          ,(124, 3)
          ,(124, 4)
    ;
    
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  2. I suppose you’ll need something like

    INSERT INTO link_products ('main_product_id', 'linked_product_id')
    SELECT 124, productId FROM  products WHERE catalog_number IN ("CAT1", "CAT2", "CAT3")
    
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  3. <?php
        $servername="localhost";
        $username="root";
        $password="";
        $dbname="demon";
        //CREATE CONNECTION
        $conn=new mysqli($servername,$username,$password,$dbname);
        //CHECK CONNECTION
        if ($conn->connect_error) 
        {
            die("connection failed:".$conn->connect_error);
        }
        //$sql="INSERT INTO student(CATEGORY_NAME) VALUES ('PENDA')";
        //isset();
        //Die();
        if (isset($_POST["add"])) 
        {
            $sql="INSERT INTO category(CATEGORY_ID,CATEGORY_NAME) VALUES ('','".$_POST["CATEGORY_NAME"]."')";
            //echo $sql;
            //die();
            $result=$conn->query($sql);
            if ($result===TRUE) 
            {
                echo"NEW RECORD CREATED SUCCESSFULLY";
            }
            else
            {
                echo "ERROR:".$sql."<br>".$conn->error;
            }   
        }   
        $conn->close();
    ?>
    <!DOCTYPE html>
    <html>
    <head>
        <title>CATEGORY</title>
    </head>
    <body align="center">
    <div>
    <form action="" method="POST">
        <td align="center" bgcolor="lightblue"><b>CATEGORY:</b><input type="value" name="CATEGORY_name" WIDTH="1000" value=""/></td>
    </br>
    </br>
    <input type="submit" name="submit" value="submit">
    </form>
    </div>
    </body>
    </html>
    
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