mysql – Creates a trigger that runs at most once a day

I have a table big_table with a large number of daily inserts, and this table has a column interesting_val, For the first line and only for the first line inserted after 00:00 UTC on each date, I want to SELECT interesting_val and INSERT to another table daily_interesting_val, Can I achieve this behavior with a combination of procedures and triggers?

Whenever big_table has created at least one line after 00:00 UTC, but daily_interesting_val has no corresponding line with the new one interesting_valMy application is in an illegal state and I want to keep this window as small as possible.

A solution that I can imagine, but not if it's possible in MySQL:

Create a scheduled procedure that creates a trigger at 00:00 each day. This trigger calls a procedure that (1) checks for the presence of a line, (2) if it does not, inserts the line, (3) if present, deletes the trigger.

Mutants and Masterminds 3e – If I have an Extended Teleport effect, can it trigger if I turn off?

That's the power I bought for my character

Triggered(1) Extended Teleport 10
Trigger: When Artifice is knocked out, he teleports away from enemies to a teleport beacon he's set up.

Teleport says this:

You can move instantly from place to place without crossing the distance in between. You can teleport yourself and
up to 50 lbs. (mass rank 0) of additional mass a distance
rank equal to your effect rank as a move action. Unwilling
passengers get a Dodge resistance check to avoid being
taken along.

Extended says:

Extended: You can take two move actions to make an extended teleport with a distance rank equal to your effect
rank +8. You are dazed and vulnerable for one round after
an extended teleport. +1 cost per rank.

Triggered this says:

You can “set” an instant duration effect with this modifier
to activate under particular circumstances, such as in response to a particular danger, after a set amount of time,
in response to a particular event, and so forth—chosen
when you apply the modifier. Once chosen, the trigger
cannot be changed.
The circumstances must be detectable by your senses.
You can acquire Senses Limited and Linked to Triggered
effects, if desired. Setting the effect requires the same action as using it normally.

Can I use the Triggered modifier to teleport when my character is disabled, and can I use the Advanced modifier with it?

Network – Trigger an action on multiple Android devices at the same time

I'm trying to trigger an action in my Android app on multiple devices at exactly the same time (or with the least possible delay / shift).

The devices are very similar (make, model, version) and are connected via USB to a Macbook Pro. I have 4 devices so far, but the final solution will contain much more, so I need a solution that works with many devices.

I tried to use sockets ( and regular WS) via Wifi and USB, but the delay increases slightly for each device, so the action is not triggered synchronously.

I also tried to send a broadcast UDP packet over USB. This leads to better results, but seems to be very inconsistent: The maximum delay ranges from 10 to 100 ms.

Synchronizing watches was another option that I thought about, but I'm not sure how it works on many devices (and NTP seems to be difficult on Android).

Any idea or pattern to meet this type of requirement? Thank you so much!

I'm the father of a 15-year-old son and he recently started playing a shooting game. What should I do if I hear that video games trigger violence?

I have seen a lot in my free time and researched if video games are causing violence, and there is really no precise answer. Many people say that they cause violence, and many say that they do not cause violence. In my opinion, video games do not cause violence, because after all, it's just a game. And really, it depends mainly on the person playing the game (due to mental issues and other things) and the type of game they play. It all depends on how the player's mind works. If they want to see and repeat violence, take away the game or let them play less graphics / violence games (without blood and SFC) that are in their age group. As long as you watch over them from time to time to see what game they are playing and if their behavior has changed, you should completely remove the game from them and introduce it to a different genre. Like RPGs, side scrollers and even free roaming games like Minecraft. If they want a good fright (and can handle it), then introduce them to the horror genre of the games. So what you should do when you hear that video games are causing violence is that you should allow your child to try out the game and see how it reacts and whether your child has negative or positive effects as a result. hear in the game. If your child has a positive influence, let it play from time to time as you watch it. If your child has negative effects, allow him to play less violent video games or introduce him to a new genre. If this does not work, take the game completely away and give it back to him if he does it a bit older.

pathfinder 2e – Does the casting of a spell trigger a casual attack?

The triggering of a spell does not trigger attacks of opportunity.

A spell is not in itself a manipulation action (it does not have the manipulation function), it is not by nature a ranged attack, it is not a movement action (it does not have the movement function) and therefore does not provoke attacks of opportunity itself.

But components can change that

Components add the following properties to the Spell Activity:

  • Material (manipulate)
  • Somatic (manipulate)
  • Verbal (concentrate)
  • Focus (manipulate)

If a spell requires one or more of the material, somatic, or focus components, the spell activity gains the tampering feature. If you receive the tampering feature, Attack of Opportunity is triggered. Note that this means that spells that require only no or only verbal components do not fulfill the trigger.

All information is taken from the section on spells, CRB 302, which contains a subsection with more information on the requirements of spell components.

Also note that a hit during spell activity will not cause you to lose or even save the spell. However, Attack of Opportunity interrupts the action (and forces you to lose the spell) if it hits critically. Other similar mechanics may or may not have similar clauses – Ranger's Disrupt Prey interrupts the action on a critical hit like Attack of Opportunity, but Lesser Death's Lurking Death reaction interrupts the action if it strikes.

unity code is executed selectively only when a specific trigger collider has been hit

I have not found any relevant information. So the best solutions I can think of are just workarounds, and there are probably no integrated solutions to do that. It is indeed very uncomfortable.

(SerializeField) private GameObject _hammerHeadGameObject;

(SerializeField) private LayerMask _impulseLayerMask;
(SerializeField) private CinemachineImpulseSource _cinemachineImpulseSource;
(SerializeField) private GamepadHapticSettings _hapticSettings;

private void OnCollisionEnter(Collision other)
    if ((this._impulseLayerMask & (1 << other.collider.gameObject.layer)) != 0)
        for (int a = 0; a < other.contactCount; a++)
            if (other.contacts(a).thisCollider.gameObject == this._hammerHeadGameObject)


private void OnTriggerEnter(Collider other)

This is an example of how I get Collider Collision, Not the most efficient solution, but it works. The problem with Collider – There is a high probability that it is not possible to make contacts, at least I have not figured out how to do it.


We can simulate our own collision to get information. The process is pretty simple:

  1. Trigger a collision.
  2. Find out what kind of collider it is.
  3. Simulate a collision with the same settings (limits, size, offset …).
  4. Get Kollider that got hit (these are the ones you're looking for).

Small example:

private void OnTriggerEnter(Collider other)
    if ((other as BoxCollider) != null)
        BoxCollider boxCollider = (other as BoxCollider);

        Collider() colliders = Physics.OverlapBox(, boxCollider.size / 2f, boxCollider.transform.rotation); // I am not sure about (/ 2f) - not tested.

Basically, we solve this from a different perspective from the original. We take the collision information from other colliders who hit the colliders we need information about.

The same applies to the second solution.


In this approach we reverse the collision. Instead of finding the collision in the original object. We have attached the script to other objects that may collide with it. And in a collision, we notify the object that it has been hit and pass it to a collider that has been hit.

private void OnTriggerEnter(Collider other)
    if (other.TryGetComponent(out ObjectThatCanBeHit objectThatCanBeHit))
        objectThatCanBeHit.CollisionHappened(other); // There we process that collision.

All in all, the first solution is more flexible, but requires more computing power for many collisions. Although the second one can be very intense, it all depends on the number of objects in the scene and the number of collisions. It would therefore require a kind of benchmark, I just say that for the first step more computing power is required from the first sight and the intuition.

3D meshes – The deleting of verts forms a mesh when they are within a trigger / object in unity

I'm the only developer of a game called Project Serenity, I've completed the basics of world generation, health, hunger, inventory, and construction, but you have no way to deform the environment around you. I had an idea of ​​how this might work, but I can not find tutorials on how to implement it, or basic information on how to delete verses at all.

I'm just trying to remove verts if they're in a trigger or an object with a specific tag, so that the player can ray-cast the object from the camera to the ground (the ray casting part is done) deform the terrain around it. I use marching cubes, but I can not find a tutorial on that either.

Here is the page for the game, there are some screenshots to check out.

Thanks for the help in advance!

django-admin: postgresql trigger function – Database administrators stack Exchange

I have this table in Django admin site which (student_enrollment_record),
when I pick a student and update / save section field

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and it will look for that section Field for what I pick on the table (Student_enrollment_record (section)) in table (subject_section_teacher (section))

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and the result is automatically saved here.

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Do I have to use a Postgres trigger to solve my problem, or should I use django_signals? Please give a solution to my problem.