diff options
Diffstat (limited to 'docs/processor/udaf.md')
| -rw-r--r-- | docs/processor/udaf.md | 38 |
1 files changed, 38 insertions, 0 deletions
diff --git a/docs/processor/udaf.md b/docs/processor/udaf.md index 66d6ad5..f305201 100644 --- a/docs/processor/udaf.md +++ b/docs/processor/udaf.md @@ -9,7 +9,9 @@ - [First Value](#First-Value) - [Last Value](#Last-Value) - [Long Count](#Long-Count) +- [Max](#Max) - [MEAN](#Mean) +- [Min](#Min) - [Number SUM](#Number-SUM) - [HLLD](#HLLD) - [Approx Count Distinct HLLD](#Approx-Count-Distinct-HLLD) @@ -116,6 +118,23 @@ Example output_fields: [sessions] ``` +### Max + +MAX is used to get the maximum value of the field in the group of events. + +```MAX(filter, lookup_fields, output_fields)``` +- filter: optional +- lookup_fields: required. Now only support one field. +- output_fields: optional. If not set, the output field name is `lookup_field_name`. + +Example + +```yaml +- function: MAX + lookup_fields: [receive_time] + output_fields: [receive_time] +``` + ### Mean MEAN is used to calculate the mean value of the field in the group of events. The lookup field value must be a number. @@ -135,6 +154,25 @@ Example output_fields: [received_bytes_mean] ``` + +### Min + +MIN is used to get the minimum value of the field in the group of events. + +```MIN(filter, lookup_fields, output_fields)``` +- filter: optional +- lookup_fields: required. Now only support one field. +- output_fields: optional. If not set, the output field name is `lookup_field_name`. + +Example + +```yaml +- function: MIN + lookup_fields: [receive_time] + output_fields: [receive_time] +``` + + ### Number SUM NUMBER_SUM is used to sum the value of the field in the group of events. The lookup field value must be a number. |