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e8c001c | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 | -- flinksql_013: 累积窗口日活统计 (Cumulate UV)
-- CUMULATE(1min step, 1day max) + COUNT DISTINCT + COUNT
-- 1. 用户登录 datagen 源表
CREATE TABLE user_source (
user_id INT,
device_id INT,
event_time AS LOCALTIMESTAMP,
WATERMARK FOR event_time AS event_time - INTERVAL '5' SECOND
) WITH (
'connector' = 'datagen',
'rows-per-second' = '3000',
'fields.user_id.kind' = 'random',
'fields.user_id.min' = '1',
'fields.user_id.max' = '100000',
'fields.device_id.kind' = 'random',
'fields.device_id.min' = '1',
'fields.device_id.max' = '5'
);
-- 2. Console 输出表
CREATE TABLE console_output (
window_start TIMESTAMP(3),
window_end TIMESTAMP(3),
uv BIGINT,
login_cnt BIGINT
) WITH (
'connector' = 'print'
);
-- 3. CUMULATE TVF 窗口聚合
INSERT INTO console_output
SELECT
window_start,
window_end,
COUNT(DISTINCT user_id) AS uv,
COUNT(*) AS login_cnt
FROM TABLE(
CUMULATE(
TABLE user_source,
DESCRIPTOR(event_time),
INTERVAL '1' MINUTE,
INTERVAL '1' DAY
)
)
GROUP BY window_start, window_end;
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