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How should I protect default values, by id or add another attribute to the tables?


How should I protect default values, by id or add another attribute to the tables?

By : Christian Belisle
Date : November 24 2020, 01:01 AM
seems to work fine Are these UUIDs being generated in the database or application level? In my opinion, you should keep not have hard-coded UUIDs and use a isDefault field instead. What if tomorrow your requirements change and for whatever reason you need to change the way that IDs are generated? Do you want to update, package, deploy and restart the N client installations that you have? Or do you simplye prefer to write a SQL/JavaScript query that updates the existings records and that you can execute in a few moments in the several installations that you have, without any down-time to your client? I would prefer the second option :)
Best regards and a happy new year, João
code :


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In Rails, how can I protect an attribute from mass assignment while still allowing the attribute to be set when the obje

In Rails, how can I protect an attribute from mass assignment while still allowing the attribute to be set when the obje


By : Warren Hasbro
Date : March 29 2020, 07:55 AM
wish help you to fix your issue Read about Mass Assignment Security, specifically roles.
You could have
code :
class TraningClass < ActiveRecord::Base
  attr_accessible .....
  attr_accessible ....., :user_id, as: :create
end
course.training_classes.build({user_id: user.id}, as: :create)
Default values in target tables

Default values in target tables


By : happyQQ
Date : March 29 2020, 07:55 AM
help you fix your problem Could be expected behavior.
Seem that bulk mode in Informatica use "Direct Path" API in Oracle (see for example https://community.informatica.com/thread/23522 )
Make array of values from table attribute that matched another tables attribute

Make array of values from table attribute that matched another tables attribute


By : Abdul Qadeer
Date : March 29 2020, 07:55 AM
like below fixes the issue In my Ruby on Rails 3 app controller, I am trying to make an instance variable array to use in my edit view. , 1) Correct version of your code
code :
@certs = Certificate.all
@reseller_id = []                  # 1
@certs.each do |user| 
  id = user.user_id                # 2 
  if u = User.find(id)
    @reseller_id << u.reseller_id  # 3
  end
end
@reseller_id = User.joins(:certificates).select('users.reseller_id').map { |u| u['reseller_id']}
How to get values from tables A and C, joined by table B with default values from C when C has no key from A

How to get values from tables A and C, joined by table B with default values from C when C has no key from A


By : Zhifang Ye
Date : November 17 2020, 12:01 PM
may help you . here is my situation:
code :
select
coalesce(c.State, 'default value')
from
a
left join b on a.id = b.A_id
left join c on b.B_id = c.B_id
SQL - How to join tables but keep all values for a particular attribute

SQL - How to join tables but keep all values for a particular attribute


By : Inderjeet Khangura
Date : March 29 2020, 07:55 AM
This might help you I am hoping someone can help me with this. I have two tables in ORACLE. , You need a FULL OUTER JOIN with COALESCE. Try like:
code :
SELECT COALESCE(a.DATE, b.DATE) Date
    ,COALESCE(a.Count, 0) Table_A_Count
    ,COALESCE(b.Count,0 ) Table_B_Count
FROM TableA a
FULL OUTER JOIN TableB b ON a.DATE = b.DATE
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