Log Tank Service
Log Tank Service
- What's New
- Function Overview
- Service Overview
- Getting Started
-
User Guide
- Log Management
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Log Ingestion
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Ingesting Cloud Service Logs to LTS
- Ingesting AOM Logs to LTS
- Ingesting APIG Logs to LTS
- Ingesting BMS Text Logs to LTS
- Ingesting CBH Logs to LTS
- Ingesting CCE Application Logs to LTS
- Ingesting CFW Logs to LTS
- Ingesting CTS Logs to LTS
- Ingesting GaussDB(DWS) Logs to LTS
- Ingesting ECS Text Logs to LTS
- Ingesting ELB Logs to LTS
- Ingesting Enterprise Router Logs to LTS
- Ingesting FunctionGraph Logs to LTS
- Ingesting ModelArts Logs to LTS
- Ingesting SMN Logs to LTS
- Ingesting SecMaster Logs to LTS
- Ingesting ServiceStage Containerized Application Logs to LTS
- Ingesting ServiceStage Cloud Host Logs to LTS
- Ingesting VPC Logs to LTS
- Ingesting WAF Logs to LTS
- Using APIs to Ingest Logs to LTS
- Other Ingestion Modes
- Setting ICAgent Structuring Parsing Rules
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Ingesting Cloud Service Logs to LTS
- Host Management
-
Log Search and Analysis
- Overview
- Setting Cloud Structuring Parsing
- Setting Indexes
- Searching Logs
- Viewing Real-Time Logs
- Analyzing Logs in LTS
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SQL Analysis Syntax
- Overview
- SQL Aggregate Functions
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- SQL Reduction Functions
- Other SQL Functions
- SQL JOIN Syntax
- SQL Query Example
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Log Visualization
- Overview
- Visualizing Logs in Statistical Charts
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Visualizing Logs in Dashboards
- Creating a Dashboard
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Dashboard Templates
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- Log Alarms
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FAQs
- Overview
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Host Management
- What Do I Do If ICAgent Installation Fails in Windows and the Message "SERVICE STOP" Is Displayed?
- What Do I Do If ICAgent Upgrade Fails on the LTS Console?
- What Do I Do If I Could Not Query New Logs on LTS?
- What Do I Do If ICAgent Restarts Repeatedly After Being Installed?
- What Do I Do If ICAgent Is Displayed as Offline on the LTS Console After Installation?
- What Do I Do If I Do Not See a Host with ICAgent Installed on the LTS Console?
- How Do I Create a VPC Endpoint on the VPCEP Console?
- How Do I Obtain an AK/SK Pair?
- How Do I Install ICAgent by Creating an Agency?
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Log Ingestion
- What Do I Do If LTS Cannot Collect Logs After I Configure Host Log Ingestion?
- Will LTS Stop Collecting Logs After the Free Quota Is Used Up If I Disable "Continue to Collect Logs When the Free Quota Is Exceeded" in AOM?
- What Do I Do If the CPU Usage Is High When ICAgent Is Collecting Logs?
- What Kinds of Logs and Files Does LTS Collect?
- How Do I Disable the Function of Collecting CCE Standard Output Logs to AOM on the LTS Console?
- How Long Does It Take to Generate Logs After Configuring Log Ingestion?
- What Do I Do If LTS Cannot Collect Logs After I Configure Log Ingestion with ICAgent?
- Log Search and Analysis
- Log Transfer
- SDK Reference
- Videos
Help Center/
Log Tank Service/
User Guide/
Log Search and Analysis/
SQL Analysis Syntax/
SQL JOIN Syntax
SQL JOIN Syntax
Updated on 2025-02-12 GMT+08:00
The JOIN clause queries data in two or more tables. This section describes how to use the JOIN clause.
Syntax
select key from t1 LEFT|RIGHT|INNER JOIN t2 on t1.key=t2.key
Currently, LTS supports LEFT JOIN, RIGHT JOIN, and INNER JOIN.
JOIN Mode |
Description |
---|---|
LEFT JOIN |
Join the right table (t2) based on the result of the left table (t1). If the table name contains only digits, add double quotation marks to the table name to convert it into a string. For example, if the table name is 123, enter "123" in the JOIN statement. |
RIGHT JOIN |
Join the left table (t1) based on the result of the right table (t2). |
INNER JOIN |
Intersection data of the results (elb1 and elb2) of two tables |
Examples
There are two tables. access indicates the host ingestion metrics, including path, latency, and status code. host indicates the host metrics, including CPU and memory. You can use JOIN to associate ingestion and host metrics and view different dimensions of metrics of the same host.
- LEFT JOIN
- Query statements
SELECT "access".__time, "access".host_ip, "access".cost, "host".cpu, "host".memory FROM log "access" LEFT JOIN (select memory,cpu,host_ip from log) host ON "access".host_ip = "host".host_ip
- 60 data records returned
- Query statements
- RIGHT JOIN
- Query statements
SELECT "access".__time, "host".host_ip, "access".cost, "host".cpu, "host".memory FROM log "access" RIGHT JOIN (select memory,cpu,host_ip from log) host ON "access".host_ip = "host".host_ip
- 60 data records returned
- Query statements
- INNER JOIN
- Query statements
SELECT "access".__time, "host".host_ip, "access".cost, "host".cpu, "host".memory FROM log "access" INNER JOIN (select memory,cpu,host_ip from log) host ON "access".host_ip = "host".host_ip
- 45 data records returned
- Query statements
Parent topic: SQL Analysis Syntax
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