changelog-sync-sql

The changelog-sync-sql command is a helper command that produces the raw SQL Liquibase would run when using the changelog-sync command.

Uses

The changelog-sync-sql command is typically used when you want to inspect the SQL Liquibase will use to baseline a new database environment.

It is best practice to inspect any SQL that Liquibase would run when using the changelog-sync command so you can review any changes the command would make to your database before running the command.

Running the changelog-sync-sql command

To run the changelog-sync-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 these properties in your command line.

Then run the changelog-sync-sql command:

liquibase --changelog-file=mychangelog.postgresql.sql changelog-sync-sql

Note: Enter the name of the changelog that you want to use in place of mychangelog.postgresql.sql.

changelog-sync-sql global attributes

Attribute	Definition	Requirement
--changelog-file	The root changelog	Required
--url	The JDBC database connection URL	Required
--username	The database username	Required*
--password	The database password	Required*
--output-file*	The attribute that specifies the file path to where the changelog-sync SQL will be written	Optional

*If not specified, the changelog-sync-sql output goes to STDOUT.

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

changelog-sync-sql example output

When successful, the changelog-sync-sql command produces the following output:

####################################################
##   _     _             _ _                      ##
##  | |   (_)           (_) |                     ##
##  | |    _  __ _ _   _ _| |__   __ _ ___  ___   ##
##  | |   | |/ _` | | | | | '_ \ / _` / __|/ _ \  ##
##  | |___| | (_| | |_| | | |_) | (_| \__ \  __/  ##
##  \_____/_|\__, |\__,_|_|_.__/ \__,_|___/\___|  ##
##              | |                               ##
##              |_|                               ##
##                                                ##
##  Get documentation at docs.liquibase.com       ##
##  Get certified courses at learn.liquibase.com  ##
##  Free schema change activity reports at        ##
##      https://hub.liquibase.com                 ##
##                                                ##
####################################################
Starting Liquibase at 11:16:15 (version 4.4.1 #29 built at 2021-07-09 16:46+0000)
Liquibase Version: 4.4.1
Liquibase Pro 4.4.1 by Datical licensed to support until Wed Sep 22 23:59:59 CDT 2021
-- *********************************************************************
-- SQL to add all changesets to database history table
-- *********************************************************************
-- Change Log: changelog.postgresql.sql
-- Ran at: 7/20/21 11:16 AM
-- Against: postgres@jdbc:postgresql://example.net:5432/dev
-- Liquibase version: 4.4.1
-- *********************************************************************
SET SEARCH_PATH TO public;
SET SEARCH_PATH TO public;
-- Create Database Lock Table
CREATE TABLE public.databasechangeloglock (ID INTEGER NOT NULL, LOCKED BOOLEAN NOT NULL, LOCKGRANTED TIMESTAMP WITHOUT TIME ZONE, LOCKEDBY VARCHAR(255), CONSTRAINT databasechangeloglock_pkey PRIMARY KEY (ID));
-- Initialize Database Lock Table
DELETE FROM public.databasechangeloglock;
INSERT INTO public.databasechangeloglock (ID, LOCKED) VALUES (1, FALSE);
-- Lock Database
UPDATE public.databasechangeloglock SET LOCKED = TRUE, LOCKEDBY = 'support.lan (192.168.86.134)', LOCKGRANTED = '2021-07-20 11:16:17.947' WHERE ID = 1 AND LOCKED = FALSE;
SET SEARCH_PATH TO public;
-- Create Database Change Log Table
CREATE TABLE public.databasechangelog (ID VARCHAR(255) NOT NULL, AUTHOR VARCHAR(255) NOT NULL, FILENAME VARCHAR(255) NOT NULL, DATEEXECUTED TIMESTAMP WITHOUT TIME ZONE NOT NULL, ORDEREXECUTED INTEGER NOT NULL, EXECTYPE VARCHAR(10) NOT NULL, MD5SUM VARCHAR(35), DESCRIPTION VARCHAR(255), COMMENTS VARCHAR(255), TAG VARCHAR(255), LIQUIBASE VARCHAR(20), CONTEXTS VARCHAR(255), LABELS VARCHAR(255), DEPLOYMENT_ID VARCHAR(10));
SET SEARCH_PATH TO public;
SET SEARCH_PATH TO public;
INSERT INTO public.databasechangelog (ID, AUTHOR, FILENAME, DATEEXECUTED, ORDEREXECUTED, MD5SUM, DESCRIPTION, COMMENTS, EXECTYPE, CONTEXTS, LABELS, LIQUIBASE, DEPLOYMENT_ID) VALUES ('45555-createtablecontacts', 'SteveZ', 'changelog.postgresql.sql', NOW(), 1, '8:762f4f2f9b31cb411865bace78aa42b3', 'sql', '', 'EXECUTED', NULL, NULL, '4.4.1', '6797778392');
INSERT INTO public.databasechangelog (ID, AUTHOR, FILENAME, DATEEXECUTED, ORDEREXECUTED, MD5SUM, DESCRIPTION, COMMENTS, EXECTYPE, CONTEXTS, LABELS, LIQUIBASE, DEPLOYMENT_ID) VALUES ('45556-createtableactor', 'SteveZ', 'changelog.postgresql.sql', NOW(), 2, '8:0e322f6cc1e214c77d91dad9188bee1e', 'sql', '', 'EXECUTED', NULL, NULL, '4.4.1', '6797778392');
INSERT INTO public.databasechangelog (ID, AUTHOR, FILENAME, DATEEXECUTED, ORDEREXECUTED, MD5SUM, DESCRIPTION, COMMENTS, EXECTYPE, CONTEXTS, LABELS, LIQUIBASE, DEPLOYMENT_ID) VALUES ('45556-altertableactor', 'MikeO', 'changelog.postgresql.sql', NOW(), 3, '8:326c51cf9fcb314bf1e9a431855283e7', 'sql', '', 'EXECUTED', NULL, NULL, '4.4.1', '6797778392');
INSERT INTO public.databasechangelog (ID, AUTHOR, FILENAME, DATEEXECUTED, ORDEREXECUTED, MD5SUM, DESCRIPTION, COMMENTS, EXECTYPE, CONTEXTS, LABELS, LIQUIBASE, DEPLOYMENT_ID) VALUES ('45678-createtablecolors', 'AmyS', 'changelog.postgresql.sql', NOW(), 4, '8:8fca28e33e361413b01ff002177024d4', 'sql', '', 'EXECUTED', NULL, NULL, '4.4.1', '6797778392');
INSERT INTO public.databasechangelog (ID, AUTHOR, FILENAME, DATEEXECUTED, ORDEREXECUTED, MD5SUM, DESCRIPTION, COMMENTS, EXECTYPE, CONTEXTS, LABELS, LIQUIBASE, DEPLOYMENT_ID) VALUES ('45679-insertcolors', 'BenG', 'changelog.postgresql.sql', NOW(), 5, '8:0ffb494fbca85edc2eb31920c725f850', 'sql', '', 'EXECUTED', '(dev,test or prod)', 'v.0.1,v.1.1', '4.4.1', '6797778392');
INSERT INTO public.databasechangelog (ID, AUTHOR, FILENAME, DATEEXECUTED, ORDEREXECUTED, MD5SUM, DESCRIPTION, COMMENTS, EXECTYPE, CONTEXTS, LABELS, LIQUIBASE, DEPLOYMENT_ID) VALUES ('45679-createfunction_get_film_count', 'SteveZ', 'changelog.postgresql.sql', NOW(), 6, '8:7eaa310a5ef2033d93ba3bfaee351810', 'sql', '', 'EXECUTED', NULL, NULL, '4.4.1', '6797778392');
- Release Database Lock
SET SEARCH_PATH TO public;
UPDATE public.databasechangeloglock SET LOCKED = FALSE, LOCKEDBY = NULL, LOCKGRANTED = NULL WHERE ID = 1;
SET SEARCH_PATH TO public;
Liquibase command 'changelog-sync-sql' was executed successfully.