Top "Migration" questions

An action of moving between major versions of any framework, product or language, or, just as commonly, alteration to the data schema of an application.

How to declare local variables in postgresql?

There is an almost identical, but not really answered question here. I am migrating an application from MS SQL Server …

sql-server postgresql migration
Removing a model in rails (reverse of "rails g model Title...")

rails g model Rating user_id:integer message:string value:integer How can I completely remove this model? Thanks

ruby-on-rails ruby model migration
Laravel migration table field's type change

Following is my file 2015_09_14_051851_create_orders_table.php. And I want to change $table->integer('category_id'); as a …

php laravel migration
Rails 3 migrations: Adding reference column?

If I create a new rails 3 migration with (for example) rails g migration tester title:tester user:references , everything works …

ruby-on-rails activerecord migration
Warning about `$HTTP_RAW_POST_DATA` being deprecated

I switched to PHP 5.6.0 and now I get the following warning everywhere: Deprecated: Automatically populating $HTTP_RAW_POST_DATA is …

php configuration migration
How to change a nullable column to not nullable in a Rails migration?

I created a date column in a previous migration and set it to be nullable. Now I want to change …

ruby-on-rails migration
Rails: Adding an index after adding column

Suppose I created a table table in a Rails app. Some time later, I add a column running: rails generate …

ruby-on-rails indexing migration
Want to upgrade project from Angular v5 to Angular v6

As Angular 6 is here, I want to upgrade or move my angular 5 client application to angular 6, but I'm not getting …

angular migration upgrade angular-ivy
Populating a database in a Laravel migration file

I'm just learning Laravel, and have a working migration file creating a users table. I am trying to populate a …

php laravel migration mysql-error-1146
Wordpress keeps redirecting to install-php after migration

Here's my situation. I have followed the exact instructions on wordpress codex page about moving a site to another server. …

wordpress migration installation relocation