Just for future reference, for Rails 4 the best way to do this is to use reversible: def change # …change code… reversible do |dir| dir.up do # …up-only code… end end end See http://guides.rubyonrails.org/migrations.html#using-reversible
This may be in two reasons: There is some other DbContext in code, that’s why automatic migrations could not decide, which context to use. There is some new change, which loops a comparison of schema and code model, so EF simply could not find the difference. In general, automatic migrations are simple and fast to … Read more
The v4 equivalent would look like: COMMENT : ( ‘//’ ~[\r\n]* ‘\r’? ‘\n’ | ‘/*’ .*? ‘*/’ ) -> channel(HIDDEN) ; which will put all single- and multi line comment on the HIDDEN channel. However, if you’re not doing anything with these HIDDEN-tokens, you could also skip these tokens, which would look like this: COMMENT … Read more
The best way should be using new MigrateDatabaseToLatestVersion initializer. Database.SetInitializer<YourContext>( new MigrateDatabaseToLatestVersion<YourContext, YourMigrationsConfig>()); Database.Initialize(false);
mysql -BNe “select concat(‘\”,user,’\’@\”,host,’\”) from mysql.user where user != ‘root'” | \ while read uh; do mysql -BNe “show grants for $uh” | sed ‘s/$/;/; s/\\\\/\\/g’; done > grants.sql
You can use next: const City = sequelize.define(‘city’, { name: { type: Sequelize.STRING }, order_: { type: Sequelize.INTEGER } }); City.sync().then(() => { City.create({ name: ‘Neuquen’, order_: 0 }); City.create({ name: ‘General Roca’, order_: 1 }); }); Or read about “migrations” at http://docs.sequelizejs.com/en/latest/docs/migrations/
I think this has something to do with “The removal of ContentType.name“, according to this. But somehow it doesnt work. By manually removing the column name from ‘django_content_type’ table. Eg. ‘ALTER TABLE django_content_type DROP COLUMN name’ I was able to apply the migrations. Maybe this can get you a little bit further at least.
Just went through this myself, well I still am… Case sensitive text Lack of INSERT IGNORE and REPLACE Explicit casting needed almost everywhere No backticks LOAD DATA INFILE (COPY is close, but not close enough) Change autoincrement to SERIAL Although bad form in MySQL, in Postgres, an INNER JOIN without an ON clause can’t happen, … Read more
From March 2022, you can now configure your MYSQL and other database by making a request to digital ocean APIs. Here’s the reference: https://docs.digitalocean.com/products/databases/mysql/#4-march-2022 STEPS TO FIX THE ISSUE: Step – 1: Create AUTH token to access digital ocean APIs. https://cloud.digitalocean.com/account/api/tokens STEP – 2: Get the database cluster id by hitting the GET request to … Read more
You could copy and paste schema.rb into a migration and back-date it (e.g. change the date) so that no existing databases will run it. After you create this migration you can delete all your old migrations. I disagree with Andrew that you should never delete migrations. Migrations break unexpectedly all the time based on model … Read more