类的使用
io.github.dengliming.redismodule.redisearch.aggregate.Reducer

使用Reducer的程序包

程序包	说明
io.github.dengliming.redismodule.redisearch.aggregate

io.github.dengliming.redismodule.redisearch.aggregate中Reducer的使用

返回Reducer的io.github.dengliming.redismodule.redisearch.aggregate中的方法

限定符和类型	方法和说明
Reducer	Reducer.as(String alias)
static Reducer	Reducers.avg(String field) Return the average value of a numeric property.
static Reducer	Reducers.count() Count the number of records in each group
static Reducer	Reducers.countDistinct(String field) Count the number of distinct values for property
static Reducer	Reducers.countDistinctish(String field) Same as COUNT_DISTINCT - but provide an approximation instead of an exact count
static Reducer	Reducers.firstValue(String field) Return the first or top value of a given property in the group.
static Reducer	Reducers.firstValue(String field, String by)
static Reducer	Reducers.firstValue(String field, String by, org.redisson.api.SortOrder order)
static Reducer	Reducers.max(String field) Return the maximal value of a property, whether it is a string, number or NULL
static Reducer	Reducers.min(String field) Return the minimal value of a property, whether it is a string, number or NULL.
static Reducer	Reducers.quantile(String field, double quantile) Return the value of a numeric property at a given quantile of the results.
static Reducer	Reducers.randomSample(String field, int sampleSize) Perform a reservoir sampling of the group elements with a given size, and return an array of the sampled items with an even distribution.
static Reducer	Reducers.stdDev(String field) Return the standard deviation of a numeric property in the group.
static Reducer	Reducers.sum(String field) Return the sum of all numeric values of a given property in a group.
static Reducer	Reducers.toList(String field) Merge all distinct values of a given property into a single array.

参数类型为Reducer的io.github.dengliming.redismodule.redisearch.aggregate中的方法

限定符和类型	方法和说明
Group	Group.reducers(Reducer... reducers)