Is it possible to output the SQL change scripts that 'rake db:migrate' produces?

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Is it possible to output the SQL change scripts that 'rake db:migrate' produces?

You can create a Rake task in lib/tasks/:

namespace :db do
  desc 'Make migration with output'
  task(:migrate_with_sql => :environment) do
    ActiveRecord::Base.logger =

Then call rake db:migrate_with_sql to log the migration.

Automated generation of database change scripts, You should be able to do this with any good database comparison tool OutputFileName = "changes.sql", OutputPath = @"C:\path\to\output"  SQL Management Studio allows you to open a table in design mode, make changes then generate a “change script”. The change script allows you to see exactly what changes will be made when you click ‘Save’, and where you have a test and production database you will also be able to use the change script to apply the exact same changes to the other database.

Building on @qarol but even cooler, add this Rake task to one of your Rake files:

task :log => :environment do
  ActiveRecord::Base.logger =

Then you can call ANY Rake task and have the output logged:

rake log db:migrate

Methods to script SQL Server database objects, In this article, we will explore various ways for scripting SQL Server database objects. We can change it to Script Drop, Script Drop and create as well To generate DDL and DML SQL script output and execution packages,  This chapter helps you learn to write and edit scripts containing SQL*Plus commands, SQL commands, and PL/SQL blocks. It covers the following topics: About Editing Scripts. About Editing Scripts in SQL*Plus Command-Line. About Placing Comments in Scripts. Running Scripts. Nesting Scripts. About Exiting from a Script with a Return Code

The SQL output is captured in your environment log file e.g. development.log

Auto generate change scripts in SQL Server Management Studio , After checking the specified checkbox, SSMS is now able to generate scripts for the creation and/or modification of any table when you use the  When executing scripts in SQL Developer, the amount of output we display on the screen is LIMITED. By design, we only show you 5,000 records from any query, and we limit the amount of output in total for a single script execution to 10,010 rows. This is controlled here: These are the defaults.

I put together the capture_migration_sql gem for this purpose. It will dump your migration SQL to files in db/migration_sql.

It's overkill if you just need to find a single SQL statement, but is great to have if your production process requires the raw SQL statements. It can also make reviewing complex database changes in code reviews a bit easier since there's no ruby -> SQL mental math required.

Simple SQL Change Automation Scripting: The Release Object , Simple SQL Change Automation Scripting: The Release Object operations, with the release object, using as little PowerShell as possible. such as the output from a code analysis, in a CodeAnalysisResult object, to tell  SQL> @foo SQL> set echo on SQL> BEGIN 2 3 dbms_output.put_line('Happy Friday'); 4 5 END; 6 7 / PL/SQL procedure successfully completed. Note that you still don't see the output/processing of the script though. I get both sides honestly.

Configuring comparison & script generation options, SQL Change Automation uses most of the factory default comparison and Database Project compatible script folder output = Off. This option  As a part of my best practices, I always save the T-SQL scripts used for creation and modification of objects in SQL Server. When creating and modifying tables using SQL Server Management Studio designer it is easy to right click in the designer and selec

Generate Scripts, You can choose one of several types of scripts; for example to create, alter, or drop the object. You can save the script in a Query Editor window,  I’m having issues with the script output on SQL 4.1.5. The original output shows an example below:-C_ELI ———— N. Then when I set format to ansiconsole I get the whole field name as below:-C_ELIGIBLE N. This is partly what I want, but still want to keep the heading split separately with the ———— and the results shown below that.

Generate and Publish Scripts Wizard, You can generate scripts for a database on an instance of the Database Advanced - Display the Advanced Publishing Options dialog box where you can For more information, see About Change Tracking (SQL Server). To change the collation of an existing database, requires ALTER permission on the database. Using SQL Server Management Studio To set or change the database collation. In Object Explorer, connect to an instance of the SQL Server Database Engine, expand that instance, and then expand Databases.

  • You should also take a look at this blog post
  • rails console --sandbox and then run migration from console. The SQL will be printed while it is being executed and everything should rollback when you exit the console
  • ActiveRecord::Base.logger = is the magic, getting a particular migration to run just involves setting the logger prior :)
  • This is brilliance
  • This is fine but feels more elegant.
  • You can use this: ActionMailer::Base.logger = ActiveRecord::Base.logger = to get mailer output as well.
  • This worked great and is much more generic. It should be the accepted answer.
  • Put this script in a new file called log_migration.rake (or whatever) and drop it in the lib/tasks directory
  • There are too many tasks and requests going on that I cannot check it out in development.log
  • This needs to be upvoted more, this gem is super useful and more than answers the question