update-sql

The update-sql command is a helper command that allows you to inspect the SQL Liquibase will run while using the update command.

Uses

The update-sql command is used when you want to inspect the raw SQL before running the update command, so you can correct any issues that may arise before running the command. Liquibase uses the raw SQL to apply database changes you have added to the changelog file.

Running the update-sql command

To run the update-sql command, specify the driver, classpath, and URL in the Liquibase properties file. For more information, see Specifying Properties in a Connection Profile. You can also specify properties from the command line.

Run the update-sql command:

liquibase --changelog-file=sample.changelog.xml update-sql

Note: Enter the name of the changelog you want to use in place of sample.changelog.xml.

update-sql global attributes

Tip: All commands and parameters use the --kebab-case format in the CLI environment. This is the format Liquibase recommends for best results. If your preference is camelCase, it will still work in the CLI.

Attribute Definition Requirement
--changelog-file * Specifies the root changelog Required
--url Specifies the JDBC database connection URL Required
--username Specifies the database username Required
--password Specifies the database password Required
--output-file ** Specifies the file path to where the update SQL will be written Optional

* Liquibase checks the changelog and any nested changelogs for the definitions of the changesets to update.

* * If not specified, update SQL output goes to STDOUT.

Note: The username and password attributes are not required for connections and systems which use alternate means of authentication.

update-sql command attributes

Attribute Definition Requirement
--labels Tags you can add to changesets to determine which changesets in the changelog to evaluate based on their labels Optional
--contexts Expressions you can add to changesets to determine which changesets in the changelog to evaluate based on their contexts Optional 
Liquibase Version: 4.9.1
Liquibase Community 4.9.1 by Liquibase
-- *********************************************************************
-- Update Database Script
-- *********************************************************************
-- Change Log: example-changelog.sql
-- Ran at: 5/9/22, 9:44 AM
-- Against: DBUSER@jdbc:h2:tcp://localhost:9090/mem:dev
-- Liquibase version: 4.9.1
-- *********************************************************************

-- Lock Database
UPDATE PUBLIC.DATABASECHANGELOGLOCK SET LOCKED = TRUE, LOCKEDBY = 'DESKTOP-SQVSSV2 (192.168.1.179)', LOCKGRANTED = NOW() WHERE ID = 1 AND LOCKED = FALSE;

-- Release Database Lock
UPDATE PUBLIC.DATABASECHANGELOGLOCK SET LOCKED = FALSE, LOCKEDBY = NULL, LOCKGRANTED = NULL WHERE ID = 1;

Liquibase command 'update-sql' was executed successfully.