Generate test data

Background information

OceanBase Developer Center (ODC) provides the data mocking feature for you to quickly generate data based on the field types of an existing table in scenarios that require a large amount of mock data, such as database performance testing and feature verification.

This topic describes how to generate mock data for a table in a ticket.

Considerations

• At most 100 million rows can be mocked at a time.

• Data mocking is not supported for a table with CHECK constraints.

• Data mocking is not supported for RANGE- or LIST-partitioned tables.

• Data mocking is not supported for a table that is encoded by using ZHSGB2312.

Create a data mocking task

1. In the SQL window, choose Tickets > Mock Data > Create New.

2. Configure the following parameters and click Submit.

   Parameter	Description
   Database	Select the target database .
   Table	Select a table in the database to generate mock data based on this table.
   Mock Data Volume	Specify the number of rows to be generated. The default value is 1000. At most 100 million rows can be generated. You can enter a value ranging from 1 to 100,000,000.
   Batch Size	Specify the number of rows that triggers a commit by using the COMMIT command. By default, a commit is performed each time when 200 rows are generated. The maximum value is 500. You can enter an integer ranging from 1 to 500.
   Truncate Table Before Inserting Mock Data	Specify whether to clear the original data before inserting mock data into the table.
   Data Conflict Handling Mode	Select the handling method when the inserted data conflicts with the original data in the table. Valid values: Ignore: This option is selected by default. The data conflicting with existing data is not inserted. Overwrite: If a data conflict occurs, the original data is deleted, and the new data is inserted. Terminate: If a data conflict occurs, the data mocking task is terminated.
   Rule Settings	Set the data generation rules. In the Rule and Rule Details columns, set the mock data generation rules for the fields in the selected table. Some built-in rules are provided in the Rule column based on the field type. The Rule Details column displays the details about the selected rule. You can click the Edit icon to edit the details.
   Task Settings	Select Execute Now or Scheduled Execution.

3. After the task is generated, you can view the task information in the Tickets > Mock Data list.

View a data mocking task

1. Go to Tickets > Mock Data, and click the name of the target task in the simulated data task list to view the task details. You can also click the ··· icon in the Actions column to perform more operations on the task.

   • Execute: When the execution mode is manual, click this option to execute the task.
   • Terminate: When the execution mode is periodic or scheduled, click this option to terminate the task.
   • Edit: When the task status is disabled, click this option to edit the task.
   • Delete: When the task status is completed or terminated, click this option to delete the task.
   • View: View the task details.
   • Clone: Copy the task execution content to quickly generate a new task with the same configuration.
   • Share: Quickly copy the task access address.
   • Download: Download the generated mock data to the local disk. You can view the exported data structure file from the local disk.

2. In the task details panel that appears, the Basic Information tab is displayed by default. You can view the task type, database, variable configuration, and execution mode.

   Note

   You can configure whether to allow queries and downloads of query results in the system settings. For more information, see System settings.

3. Click the Workflow tab to view the task status, approval status, execution status, and execution result.

4. Click the Logs tab to view all logs and alert logs of the task.

   Item	Description
   All Logs	All logs display the INFO, ERROR, and WARN logs of the task. You can click the Find, Download, and Copy buttons to find, download, or copy all logs.
   Alert Logs	Alert logs display the ERROR and WARN logs of the task. When the task fails, you can view the error information in the alert logs. You can click the Find, Download, and Copy buttons to find, download, or copy alert logs.

References

• Edit and execute SQL statements

• Perform PL compilation and debugging

• Use the command-line window

• Edit and export the result set

• Execution analysis

• Database change management

• Manage partitions

• Synchronize shadow tables

• Online schema changes