////
Licensed to the Apache Software Foundation (ASF) under one
or more contributor license agreements.  See the NOTICE file
distributed with this work for additional information
regarding copyright ownership.  The ASF licenses this file
to you under the Apache License, Version 2.0 (the
"License"); you may not use this file except in compliance
with the License.  You may obtain a copy of the License at

https://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing,
software distributed under the License is distributed on an
"AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
KIND, either express or implied.  See the License for the
specific language governing permissions and limitations
under the License.
////

===== dbm-rollback-count-sql

====== Purpose

Writes the SQL to roll back the specified number of change sets to STDOUT or a file.

====== Description


Usage:
[source,java]
----
grails <<environment>> dbm-rollback-count-sql <<number>> <<filename>> --contexts=<<contexts>> --defaultSchema=<<defaultSchema>> --dataSource=<<dataSource>>
----

Required arguments:

* `number` - The number of changesets to roll back

Optional arguments:

* `filename` - The path to the output file to write to. If not specified output is written to the console
* `contexts` - A comma-delimited list of http://www.liquibase.org/manual/contexts[context] names. If specified, only changesets tagged with one of the context names will be included
* `defaultSchema` - The default schema name to use
* `dataSource` - if provided will run the script for the specified dataSource.  Not needed for the default dataSource.

NOTE: Note that the `contexts`, `defaultSchema`, and `dataSource` parameter name and value must be quoted if executed in Windows, e.g.
[source,groovy]
----
grails dbm-rollback-count-sql "--contexts=<<contexts>>" "--defaultSchema=<<defaultSchema>>" "--dataSource=<<dataSource>>"
----

NOTE: For the `dataSource` parameter, if the data source is configured as `reports` underneath the `dataSources` key in `application.[yml|groovy]`, the value should be `reports`.

[source,groovy]
----
--dataSource=reports
----
