DROP TABLE IF EXISTS items;
CREATE TABLE items (
name VARCHAR(255),
price SMALLINT NULL,
KEY price_index(price)
) DEFAULT CHARSET=utf8mb4;
INSERT INTO items VALUES ("smile", 0);
INSERT INTO items VALUES ("sample chips", NULL);
SELECT mroonga_command("index_column_diff --table items#price_index --name index");
mroonga_command("index_column_diff --table items#price_index --name index")
[]
SELECT * FROM items WHERE price = 0;
name	price
smile	0
sample chips	0
DROP TABLE items;
