public Sql[] generateSql(UnlockDatabaseChangeLogStatement statement, Database database, SqlGeneratorChain sqlGeneratorChain) {
String liquibaseSchema = database.getLiquibaseSchemaName();
UpdateStatement releaseStatement = new UpdateStatement(database.getLiquibaseCatalogName(), liquibaseSchema, database.getDatabaseChangeLogLockTableName());
releaseStatement.addNewColumnValue("LOCKED", false);
releaseStatement.addNewColumnValue("LOCKGRANTED", null);
releaseStatement.addNewColumnValue("LOCKEDBY", null);
releaseStatement.setWhereClause(database.escapeColumnName(database.getLiquibaseCatalogName(), liquibaseSchema, database.getDatabaseChangeLogTableName(), "ID")+" = 1");
return SqlGeneratorFactory.getInstance().generateSql(releaseStatement, database);
}