Hmmm...

1. Those tables are missing in migration:

pokemon_hundo_stats
pokemon_iv_stats
pokemon_nundo_stats
pokemon_shiny_stats

2. I wouldn't create temporary table, maybe just set them temporary as pokemon_id = 65535, remove and them update? Or make a new table with more randomized name :)

The rows need merging not updating; I’m not sure it can easily be done without a temp table. Can you expand on your suggestion Len?

@jfberry something like that

START TRANSACTION;

UPDATE pokemon_stats SET pokemon_id = 65535 WHERE pokemon_id = 132;

INSERT INTO pokemon_stats (date, area, fence, pokemon_id, form_id, count)
SELECT
    date,
    area,
    fence,
    132 AS pokemon_id,
    0   AS form_id,
    SUM(count) AS count
FROM pokemon_stats
WHERE pokemon_id = 65535
GROUP BY date, area, fence
ON DUPLICATE KEY UPDATE
    count = count + VALUES(count);

DELETE FROM pokemon_stats WHERE pokemon_id = 65535;

COMMIT;

But yeah, just noticed its temporary table creation so it doesn't really matter. Either way we need to run it for multiple tables not single.

Actually this approach might work even without moving the pokemon id since you can do form<>0

worth a go.