[SOLVED] SQL query is changing all names?

Issue

So i am trying to change a particular name, only the query is changing all the names.

UPDATE Team
SET Naam = 'besties'
FROM Team AS T 
INNER JOIN Gebruiker AS G ON T.GebruikerID = G.Id
WHERE (G.Gebruikersnaam = 'toppers')

The table "Team" looks like this:

The table Team

The table "Gebruiker" looks like this
The table Gebruiker
As you can see in both rows the Name is "besties", the idea is to change the Name only at one row.

In row 1 the Name was first "toppers"

Solution

I’m not sure about the syntax you’re currently using, but I would write it like this. I think this more clearly conveys that you’re only updating Team, and to be exact, only the Team of any of the Gebruikers named ‘toppers’.

Instead of in you could use =, if it’s guaranteed that Gebruikersnaam is unique.

UPDATE Team T
SET T.Naam = 'besties'
WHERE
  T.GebruikerID in 
  ( SELECT G.Id 
    FROM Gebruikers G 
    WHERE G.Gebruikersnaam = 'toppers'
  )

Answered By – GolezTrol

Answer Checked By – Dawn Plyler (BugsFixing Volunteer)

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