CREATE TABLE if not EXISTS  wengzi_test_db.first_table  (
    `product_code` String,
    `package_name` String
)
ENGINE = MergeTree
ORDER BY package_name
SETTINGS index_granularity = 8192;
---------------------------
CREATE TABLE IF NOT EXISTS wengzi_test_db.first_table (
	`product_code` String,
	`package_name` String
) ENGINE = MergeTree
ORDER BY package_name
SETTINGS index_granularity = 8192;