I have a little problem with INNER JOIN in mysql query. I have two tables the first is 'kontrola' and 2nd is 'naruszenia' In 'kontrola' table I have rows:
naruszenie_id (Foreign KEY on 'naruszenia' table) In my naruszenia table I have:
id
Now I want to display using INNER JOIN the naruszenie from 'naruszenia' table. I've create somethin linke this:
$listakontroli = $connecting->query("SELECT * FROM kontrola INNER JOIN naruszenia ON
kontrola.naruszenie_id=naruszenia.id");
But the result is that when I want to display records in table I have changed the ID of first table(kontrola) and the naruszenia_id still showing id from naruszenia table. How to change it to display properly the word not id.
You could use explicit column name and refer to both the table (in this case using k an n) eg:
$listakontroli = $connecting->query("SELECT k.id
, k.podmiot
, k.miasto
, k.wszczeto7
, k.zakonczono
, n.naruszenia
FROM kontrola k
INNER JOIN naruszenia n ON k.naruszenie_id=n.id");
You need to use LEFT OUTER JOIN
or separate the ID
from the two tables. e.g.
$listakontroli = $connecting->query("SELECT kontrola.id as kid, naruszenia.id as nid, podmiot, miasto, etc* FROM kontrola INNER JOIN naruszenia ON kontrola.naruszenie_id=naruszenia.id");
This way you can properly distinguish the displayed IDs