How to change sql mode in Planetscale?

[Rave2407]

I'have this error when i use GROUP BY in queryRawUnsafe

Expression #3 of SELECT list is not in GROUP BY clause and contains nonaggregated column 'test.v.imgUrl' which is not functionally dependent on columns in GROUP BY clause; this is incompatible with sql_mode=only_full_group_by (errno 1055) (sqlstate 42000)

with my research I saw that you had to declare

set sql_mode = REPLACE(@@sql_mode,'ONLY_FULL_GROUP_BY','');

but I don't understand where to declare it in my code.

[jgreet]

You'll have to change the SQL mode in every client session that's going to execute that query.

So if it's a common query you'll probably want to disable the ONLY_FULL_GROUP_BY mode in every connection, right after it's established. Alternatively, you could disable the ONLY_FULL_GROUP_BY mode right before executing the affected query.

See also #375