我的蜂巢查询需要很长时间。我该怎么做才能减轻这种影响?
有哪些优化查询的方法?
这是我的查询
CREATE VIEW dwo_analysis.spark_experiment_unbounce_control_lookup_b AS
SELECT
a.visid,
a.date_time
FROM dwo_analysis.spark_experiment_unbounce_control_list a
LEFT JOIN dwo_analysis.spark_experiment_unbounce_aq_list aq ON aq.visid = a.visid
LEFT JOIN dwo_analysis.spark_experiment_unbounce_ap_list ap ON ap.visid = a.visid
WHERE ap.visid IS NULL
AND aq.visid IS NULL;