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What is the difference between CascadeType.REMOVE and orphanRemoval in JPA?
...EMOVE)
private Address address;
:
}
Orphan Removal
JPA 2 supports an additional and more aggressive remove cascading mode
which can be specified using the orphanRemoval element of the
@OneToOne and @OneToMany annotations:
@Entity
class Employee {
:
@OneToOne(orphanR...
How do I execute inserts and updates in an Alembic upgrade script?
... application.
"""create teams table
Revision ID: 169ad57156f0
Revises: 29b4c2bfce6d
Create Date: 2014-06-25 09:00:06.784170
"""
revision = '169ad57156f0'
down_revision = '29b4c2bfce6d'
from alembic import op
import sqlalchemy as sa
from sqlalchemy import orm
from sqlalchemy.ext.declarative imp...
MySQL: Quick breakdown of the types of joins [duplicate]
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27
Based on your comment, simple definitions of each is best found at W3Schools
The first line of ...
An example of how to use getopts in bash
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524
#!/bin/bash
usage() { echo "Usage: $0 [-s <45|90>] [-p <string>]" 1>&2; exi...
Posting a File and Associated Data to a RESTful WebService preferably as JSON
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edited Mar 6 '19 at 12:28
Sergio B
5511 silver badge99 bronze badges
answered Nov 3 '10 at 2:59
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Accessing Imap in C# [closed]
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edited May 16 '12 at 3:22
answered Jul 15 '11 at 18:11
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How to load all modules in a folder?
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edited Apr 29 '19 at 2:44
answered Jun 29 '09 at 10:06
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How to len(generator()) [duplicate]
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62
Generators have no length, they aren't collections after all.
Generators are functions with a i...