I want to insert one item from specified row, to another table - mysql

Question

So I have these 2 tables. I need to get whatever is in the 1st row, 3rd column of Table 1 (in this case, ducks) and insert it into Table 2, 1st row, 6th column (marked [here])
table 1 (teams)
PK
team_id groupno tname oname onumber oemail group series
1 1 ducks laura 123 a#b.com A 1
2 2 birds john 456 c#d.com A 1
3 3 redds hanna 789 e#f.com A 1
4 4 blues mark 102 g#h.com A 1
team_id and groupno while look the same, groupno goes up to 10 (counting all teams in a group), team_id goes on
table 2 (games)
PK
game_id match_id time field group team1 team2 series
1 1 0900 1 A [here] N/A 1
2 2 0930 1 A N/A N/A 1
3 3 1000 1 A N/A N/A 1
4 4 1030 1 A N/A N/A 1
game_id and match_id arent's the same, math_id goes up to 36 (It counts all the games played in single series), game_id goes on
Below what I've been working with
UPDATE games INNER JOIN teams
ON games.game_id = 1
SET games.team2 = teams.tname
WHERE teams.series=1;
What I want the result to be
Example:
vs 2. --- 3. vs 4.
vs 3. --- 2. vs 4.
vs 4. --- 2. vs 3.
It should take the names from table 1 and arranges them into game slots so each team plays against each other
PK
game_id match_id time field group team1 team2 series
1 1 0900 1 A ducks birds 1
2 2 0930 1 A reds blues 1
3 3 1000 1 A ducks reds 1
4 4 1030 1 A birds blues 1
5 5 1100 1 A ducks blues 1
6 6 1130 1 A reds birds 1

Answer 1

I think this should match every combination and put it in the game order:
UPDATE games g
INNER JOIN (
SELECT
(#cnt := #cnt + 1) game_id, t.team1, t.team2
FROM (
SELECT
DISTINCT t1.tname team1, t2.tname team2
FROM teams t1
CROSS JOIN (SELECT DISTINCT tname FROM teams) t2
WHERE t1.tname <> t2.tname
) t
CROSS JOIN (SELECT #cnt := 0) c
) mt ON mt.game_id = g.game_id
SET g.team1 = mt.team1,
g.team2 = mt.team2
;
though I'd recommend using team ids instead of team names.
If you mean ids then:
UPDATE table2 ti
SET ti.item2 = (SELECT t1.item FROM table1 t1 WHERE t1.id = 3)
WHERE ti.id = 1
;