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On delete cascade with doctrine2
... make a simple example in order to learn how to delete a row from a parent table and automatically delete the matching rows in the child table using Doctrine2.
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How to change the default charset of a MySQL table?
There is a MySQL table which has this definition taken from SQLYog Enterprise :
5 Answers
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Reset auto increment counter in postgres
I would like to force the auto increment field of a table to some value, I tried with this:
12 Answers
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Liquibase lock - reasons?
...inst the database helps.
Or you can simply drop the DATABASECHANGELOGLOCK table, it will be recreated.
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How should a model be structured in MVC? [closed]
...n Object-Relational Mapping technique (ORM) nor an abstraction of database tables. Anyone who tells you otherwise is most likely trying to 'sell' another brand-new ORM or a whole framework.
What a model is:
In proper MVC adaptation, the M contains all the domain business logic and the Model Layer ...
How do I execute inserts and updates in an Alembic upgrade script?
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This answer assumes you are using declarative (as opposed to class-Mapper-Table or core) to define your models. It should be relatively straightforward to adapt this to the other forms.
Note that Alembic provides some basic data functions: op.bulk_insert() and op.execute(). If the operations are ...
MySQL OPTIMIZE all tables?
MySQL has an OPTIMIZE TABLE command which can be used to reclaim unused space in a MySQL install. Is there a way (built-in command or common stored procedure) to run this optimization for every table in the database and/or server install, or is this something you'd have to script up yourself?
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What should I name a table that maps two tables together? [closed]
Let's say I have two tables:
24 Answers
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ASP.NET Identity's default Password Hasher - How does it work and is it secure?
...s secure
Random salts means that an attacker can’t use a pre-generated table
of hashs to try and break passwords. They would need to generate a
hash table for every salt. (Assuming here that the hacker has also compromised your salt)
If 2 passwords are identical they will
have different hashes. ...
How to add column if not exists on PostgreSQL?
Question is simple. How to add column x to table y , but only when x column doesn't exist ? I found only solution here how to check if column exists.
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