sqlload executes SQL scripts contained in a directory hierarchy into a PostgreSQL database.
In the sqlloader directory, execute gem build, then gem install to make the gem available to your Ruby installation.
You will then be able to use the sqlload command-line utility to automate the execution of SQL scripts.
You must supply a directory layout similar to this:
SQL/ Dataset1/1.sql Dataset1/config.json Dataset2/reset.sql
sqlload will look below the SQL directory in the directory where it is executed. Each subdirectory regroups a collection of SQL scripts and a configuration file in JSON format that describes how to connect to the database.
- sqlload list will list the datasets.
- sqlload load [dataset name] will execute the sql scripts in that dataset ordered by filename, except the 'reset.sql' one
- sqlload reset [dataset name] will execute the 'reset.sql' script, then the others
You can override the connection information by passing named command line arguments. The syntax is meant to be the same as the psql command line utility.
Configuration is per dataset. You can place a config.json file in the dataset directory, where you can override the following properties:
- host
- port
- dbname
- user
- password
Example config.json:
{ "dbname": "bar", "user": "foo" }
Right now, sqlload cannot handle scripts produced by pg_dump that use COPY to restore data into the database. As a workaround, if you place any scripts inside a psql directory inside the directory containing the config.json configuration file, they will be executed by calling psql in a subshell.
!!! Warning: do not use this on your production systems as the password will be passed as the PGPASSWORD environment variable and tools are available to examine the environment variables of running processes.
Copyright 2012 Ludovico Fischer
Licensed under the Apache License, Version 2.0 (the "License");
You may obtain a copy of the License at http://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.