timeSeriesMetrics

timeSeriesMetrics(db_name.time_series_table) - 返回表 db_name.time_series_table 使用的 metrics 表，该表的引擎是 TimeSeries

CREATE TABLE db_name.time_series_table ENGINE=TimeSeries METRICS metrics_table

如果 metrics 表是内部表，该函数也有效

CREATE TABLE db_name.time_series_table ENGINE=TimeSeries METRICS INNER UUID '01234567-89ab-cdef-0123-456789abcdef'

以下查询是等效的

SELECT * FROM timeSeriesMetrics(db_name.time_series_table);
SELECT * FROM timeSeriesMetrics('db_name.time_series_table');
SELECT * FROM timeSeriesMetrics('db_name', 'time_series_table');