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- Getting Started
- Operation Guide
- Resource Management
- Permission Management
- Log Collection
- Collection Overview
- Collecting Logs in Self-Built Kubernetes Cluster
- Collecting Syslog
- Collection by LogListener
- Collecting Text Log
- Uploading Log over Kafka
- Uploading Logs via Anonymous Write
- Uploading Logs via Logback Appender
- Uploading Logs via Log4j Appender
- Uploading Log via SDK
- Uploading Log via API
- Importing Data
- Tencent Cloud Service Log Access
- Metric Collection
- Log Storage
- Metric Storage
- Search and Analysis (Log Topic)
- Syntax and Rules
- Statistical Analysis (SQL)
- Quick Analysis
- SQL Syntax
- SQL Functions
- String Function
- Date and Time Functions
- IP Geographic Function
- URL Function
- Mathematical Calculation Functions
- Mathematical Statistical Function
- General Aggregate Function
- Geospatial Function
- Binary String Function
- Estimation Function
- Type Conversion Function
- Logical Function
- Operators
- Bitwise Operation
- Regular Expression Function
- Lambda Function
- Conditional Expressions
- Array Functions
- Interval-Valued Comparison and Periodicity-Valued Comparison Functions
- JSON Functions
- Window Functions
- Sampling Analysis
- Configuring Indexes
- Reindexing
- Context Search and Analysis
- Downloading Log
- Search and Analysis (Metric Topic)
- Dashboard
- Data Processing documents
- Data Processing
- Creating Processing Task
- Viewing Data Processing Details
- Data Processing Functions
- Function Overview
- Key-Value Extraction Functions
- Enrichment Functions
- Flow Control
- Row Processing Functions
- Field Processing Functions
- Value Structuring Functions
- Regular Expression Processing Functions
- Time Value Processing Functions
- String Processing Functions
- Type Conversion Functions
- Logical and Mathematical Functions
- Encoding and Decoding Functions
- IP Parsing Functions
- Processing Cases
- Scheduled SQL Analysis
- SCF
- Data Processing
- Shipping and Consumption
- Monitoring Alarm
- Historical Documentation
- Practical Tutorial
- Developer Guide
- API Documentation
- History
- Introduction
- API Category
- Making API Requests
- Topic Management APIs
- Log Set Management APIs
- Index APIs
- Topic Partition APIs
- Machine Group APIs
- Collection Configuration APIs
- Log APIs
- Metric APIs
- Alarm Policy APIs
- Data Processing APIs
- Kafka Protocol Consumption APIs
- CKafka Shipping Task APIs
- Kafka Data Subscription APIs
- COS Shipping Task APIs
- SCF Delivery Task APIs
- Scheduled SQL Analysis APIs
- COS Data Import Task APIs
- Data Types
- Error Codes
- FAQs
- CLS Service Level Agreement
- CLS Policy
- Contact Us
- Glossary
Overview
CLS's time processing functions include functions for converting date values to string values, converting time field values to UTC time values and vice versa, and getting the current time.
Function dt_str
Function definition
This function is used to convert a time field value (a date string in a specific format or timestamp) to a target date string of a specified time zone and format.
Syntax description
dt_str(Value, format="Formatted string", zone="")
Parameter description
Parameter | Description | Parameter Type | Required | Default Value | Value Range |
data | string | Yes | - | - | |
format | string | No | - | - | |
zone | string | No | UTC+00:00 | - |
Example
Raw log:
{"date":"2014-04-26 13:13:44 +09:00"}
Processing rule:
fields_set("result", dt_str(v("date"), format="yyyy-MM-dd HH:mm:ss", zone="UTC+8"))
Processing result:
{"date":"2014-04-26 13:13:44 +09:00","result":"2014-04-26 12:13:44"}
Function dt_to_timestamp
Function definition
This function is used to convert a time field value (a date string in a specified format; time zone specified) to a UTC timestamp.
Syntax description
dt_to_timestamp(Value, zone="")
Parameter description
Parameter | Description | Parameter Type | Required | Default Value | Value Range |
data | string | Yes | - | - | |
zone | UTC time is used by default, without a time zone specified. If you specify a time zone, make sure that it corresponds to the time field value. Otherwise, a time zone error occurs. For time zone definitions, see ZoneId. | string | No | UTC+00:00 | - |
Example
Raw log:
{"date":"2021-10-26 15:48:15"}
Processing rule:
fields_set("result", dt_to_timestamp(v("date"), zone="UTC+8"))
Processing result:
{"date":"2021-10-26 15:48:15","result":"1635234495000"}
Function dt_from_timestamp
Function definition
This function is used to convert a timestamp field value to a time string in the specified time zone.
Syntax description
dt_from_timestamp(Value, zone="")
Parameter description
Parameter | Description | Parameter Type | Required | Default Value | Value Range |
data | string | Yes | - | - | |
zone | string | No | UTC+00:00 | - |
Example
Raw log:
{"date":"1635234495000"}
Processing rule:
fields_set("result", dt_from_timestamp(v("date"), zone="UTC+8"))
Processing result:
{"date":"1635234495000","result":"2021-10-26 15:48:15"}
Function dt_now
Function definition
This function is used to obtain the current datetime of the processing calculation.
Syntax description
dt_now(format="Formatted string", zone="")
Parameter description
Parameter | Description | Parameter Type | Required | Default Value | Value Range |
format | string | No | - | - | |
zone | string | No | UTC+00:00 | - |
Example
Raw log:
{"date":"1635234495000"}
Processing rule:
fields_set("now", dt_now(format="yyyy-MM-dd HH:mm:ss", zone="UTC+8"))
Processing result: (The actual processing result depends on the system time, and the following is for reference only.)
{"date":"1635234495000","now":"2021-MM-dd HH:mm:ss"}
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