ALTER TABLE cotton_prices MODIFY COLUMN code varchar(32) COLLATE utf8mb4_0900_as_cs NOT NULL;
ALTER TABLE oil_prices MODIFY COLUMN code varchar(32) COLLATE utf8mb4_0900_as_cs NOT NULL;
ALTER TABLE usdcny_prices MODIFY COLUMN code varchar(32) COLLATE utf8mb4_0900_as_cs NOT NULL;
ALTER TABLE yarn_prices MODIFY COLUMN code varchar(32) COLLATE utf8mb4_0900_as_cs NOT NULL;
-- tabla generica CREATE TABLE IF NOT EXISTS valores_prices LIKE oil_prices;
-- tabla generica ALTER TABLE valores_prices MODIFY COLUMN code varchar(32) COLLATE utf8mb4_0900_as_cs NOT NULL;
