Recent questions tagged foreign

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I'm creating a few simple tables and I can't get passed this foreign key error and I'm not sure why. Here's ... not seeing here? I'm using MySQL Workbench 5.2 Question&Answers:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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foreign keys - Self-referential association in Ruby on Rails 6

I am creating an application for managing Covid-19 cases, and to track the root of major infections, every ... /questions/65852041/self-referential-association-in-ruby-on-rails-6...

asked Oct 7, 2021 in Technique[技术] by 深蓝 (71.8m points)

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foreign keys - Change type of Django model field from CharField to ForeignKey

I need to change the type of a field in one of my Django models from CharField to ForeignKey. The fields ... 35999186/change-type-of-django-model-field-from-charfield-to-foreignkey...

asked Oct 7, 2021 in Technique[技术] by 深蓝 (71.8m points)

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492 views

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foreign keys - MySQL errorno 121

I'm getting this error in MySQL create. I'm doing: CREATE TABLE `blogReply` ( `Id` INT(24) NOT ... ) question from:https://stackoverflow.com/questions/1180660/mysql-errorno-121...

asked Oct 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

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413 views

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foreign keys - MySQL errorno 121

I'm getting this error in MySQL create. I'm doing: CREATE TABLE `blogReply` ( `Id` INT(24) NOT ... ) question from:https://stackoverflow.com/questions/1180660/mysql-errorno-121...

asked Oct 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

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459 views

1 answer

foreign keys - MySQL: How do I find out which tables reference a specific table?

I want to drop a table but it is referenced by one or more other tables. How can I find out which tables are ... /mysql-how-do-i-find-out-which-tables-reference-a-specific-table...

asked Oct 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

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