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6 支持的函数

单击相应的功能组以查看更多详细信息。 |函数组|函数| |--------------|---------| |聚合函数|avg, bucket_percentile, count, histogram_quantile, item_count, kurtosis, mad, max, min, skewness, stddevpop, stddevsamp, sum, sumofsquares, varpop, varsamp| |位运算函数|bitand, bitlshift, bitnot, bitor, bitrshift, bitxor| |日期和时间函数|date, dayofmonth, dayofweek, now, time| |历史函数|baselinedev, baselinewma, change, changecount, count, countunique, find, first, fuzzytime, last, logeventid, logseverity, logsource, monodec, monoinc, nodata, percentile, rate, trendavg, trendcount, trendmax, trendmin, trendstl, trendsum| |数学函数|abs, acos, asin, atan, atan2, avg, cbrt, ceil, cos, cosh, cot, degrees, e, exp, expm1, floor, log, log10, max, min, mod, pi, power, radians, rand, round, signum, sin, sinh, sqrt, sum, tan, truncate| |运算符函数|between, in| |预测函数|forecast, timeleft| |字符串函数|ascii, bitlength, bytelength, char, concat, insert, left, length, ltrim, mid, repeat, replace, right, rtrim, trim|

触发器中支持这些功能 表达式 和 [计算 项目](/manual/config/items/itemtypes/calculated)