CREATE TABLE if not EXISTS  wengzi_test_db.first_table  (
    `product_code` String,
    `package_name` String
)
ENGINE MergeTree()
    PARTITION BY toYYYYMM(EventDate)
    ORDER BY (CounterID, EventDate, intHash32(UserID))
    SAMPLE BY intHash32(UserID)
    SETTINGS index_granularity=8192
---------------------------
CREATE TABLE IF NOT EXISTS wengzi_test_db.first_table (
	`product_code` String,
	`package_name` String
) ENGINE = MergeTree()
PARTITION BY toYYYYMM(EventDate)
ORDER BY (CounterID, EventDate, intHash32(UserID))
SAMPLE BY intHash32(UserID)
SETTINGS index_granularity = 8192