ModifyDataTypeWarn

This check warns a user when a change will result in modification of a data type so they can ensure this change will not lead to unintentional data loss.

About ModifyDataTypeWarn
Liquibase version required 4.5.0+
Scope (--checks-scope) changelog
Default status enabled
Default severity (exit code) 0 ("INFO")
Customizable settings No (static)

Uses

Use the ModifyDataTypeWarn check to warn when changelogs contain a data type modification, such as a change which might lead to unintended changes or permanent loss of essential data. Unexpected changes can lead to failures of database or application jobs which rely on the previous datatype, in turn potentially leading to missing and unrecoverable data loss, service outages, and more. This policy check, like other checks, can be configured with a severity level which returns an exit code designed to stop automated jobs, giving your team time to inspect these changes.

Use ModifyDataTypeWarn

Prerequisites

  1. Ensure that you have correctly specified your Liquibase Pro license key.
  2. Ensure that the --checks-scope parameter includes the scope of this check.

For example:

--license-key=<string>
--checks-scope=<string>
globalArgs: { license-key: "<string>" }
cmdArgs: { checks-scope: "<string>" }
liquibase.licenseKey: <string>
liquibase.command.checksScope: <string>
liquibase.licenseKey: <string>
liquibase.command.checks.run.checksScope: <string>
JAVA_OPTS=-Dliquibase.licenseKey=<string> -Dliquibase.command.checksScope=<string>
JAVA_OPTS=-Dliquibase.licenseKey=<string> -Dliquibase.command.checks.run.checksScope=<string>
LIQUIBASE_LICENSE_KEY=<string>
LIQUIBASE_COMMAND_CHECKS_SCOPE=<string>
LIQUIBASE_LICENSE_KEY=<string>
LIQUIBASE_COMMAND_CHECKS_RUN_CHECKS_SCOPE=<string>

Enable

This check is enabled by default. To verify that it is currently enabled, run the show command:

liquibase checks show --check-name=<string>

Customize

This check is static, meaning it does not have any customization settings.

Run

To run the check, use the run command:

liquibase checks run --check-name=<string>
stages:
  Default:
    actions:
      - type: liquibase
        command: checks run
        cmdArgs: {check-name: <string>}

And then run the flow command on your flow file:

liquibase flow