ALTER TABLE dailys
DROP COLUMN pm25;

ALTER TABLE dailys
ADD COLUMN pm25 INTEGER;

ALTER TABLE dailys
DROP COLUMN pm10;

ALTER TABLE dailys
ADD COLUMN pm10 INTEGER;

ALTER TABLE dailys
DROP COLUMN so2;

ALTER TABLE dailys
ADD COLUMN so2 INTEGER;

ALTER TABLE dailys
DROP COLUMN no2;

ALTER TABLE dailys
ADD COLUMN no2 INTEGER;

ALTER TABLE dailys
DROP COLUMN o3;

ALTER TABLE dailys
ADD COLUMN o3 INTEGER;

ALTER TABLE dailys
DROP COLUMN co;

ALTER TABLE dailys
ADD COLUMN co INTEGER;

ALTER TABLE hourlys
DROP COLUMN pm25;

ALTER TABLE hourlys
ADD COLUMN pm25 INTEGER;

ALTER TABLE hourlys
DROP COLUMN pm10;

ALTER TABLE hourlys
ADD COLUMN pm10 INTEGER;

ALTER TABLE hourlys
DROP COLUMN so2;

ALTER TABLE hourlys
ADD COLUMN so2 INTEGER;

ALTER TABLE hourlys
DROP COLUMN no2;

ALTER TABLE hourlys
ADD COLUMN no2 INTEGER;

ALTER TABLE hourlys
DROP COLUMN o3;

ALTER TABLE hourlys
ADD COLUMN o3 INTEGER;

ALTER TABLE hourlys
DROP COLUMN co;

ALTER TABLE hourlys
ADD COLUMN co INTEGER;

ALTER TABLE weathers
DROP COLUMN pm25;

ALTER TABLE weathers
ADD COLUMN pm25 INTEGER;

ALTER TABLE weathers
DROP COLUMN pm10;

ALTER TABLE weathers
ADD COLUMN pm10 INTEGER;

ALTER TABLE weathers
DROP COLUMN so2;

ALTER TABLE weathers
ADD COLUMN so2 INTEGER;

ALTER TABLE weathers
DROP COLUMN no2;

ALTER TABLE weathers
ADD COLUMN no2 INTEGER;

ALTER TABLE weathers
DROP COLUMN o3;

ALTER TABLE weathers
ADD COLUMN o3 INTEGER;

ALTER TABLE weathers
DROP COLUMN co;

ALTER TABLE weathers
ADD COLUMN co INTEGER;