Din SELECT-fråga saknar en GROUP BY-sats. Du menar förmodligen:
INSERT INTO appfilter2
SELECT userapps.name, GROUP_CONCAT(CONCAT(userapps.activity, '/',userapps.class)) AS activity
FROM userapps
GROUP BY userapps.name
Din SELECT-fråga saknar en GROUP BY-sats. Du menar förmodligen:
INSERT INTO appfilter2
SELECT userapps.name, GROUP_CONCAT(CONCAT(userapps.activity, '/',userapps.class)) AS activity
FROM userapps
GROUP BY userapps.name