Postgresql identify column name information from table schema

I have multiple tables with with varying names for the same piece of data. For example, day vs business_day. I’d like to identify what column names exist for which table. I think this can be done using schema information, but I’m not familiar with it.

For simplicity, the tables below are 3 separate tables with these column names.


day    city  weather


business_day location  status


day   city  rain

Where day and business_day and city and location are the same piece of information, but unfortunately different naming conventions so I wouldn’t be able to use the same selection criteria in a WHERE clause. I’d like to search the table information to see which tables have day or business_day and city or location. The other columns are not important to me in this example. How can I identify table information in this way?

Platform Identifier – Identify & Sorting Done QUICK!

Another little tool to add to the collection to help you identify & sort those link lists.
YOU tell the software what to use to identify using both a powerful inUrl and inHtml method.
Best Regards

identify sequence in a list

You can create a list of subsequences of length 3 using Partition and use Nearest with distance function ChessboardDistance (thanks: @CarlWoll*):

nF = Nearest(Partition(megalist, 3, 1) -> {"Element", "Index"}, 
  DistanceFunction -> (Norm(# - #2, Infinity) &))

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The function nF(x) returns the subsequences of megalist and their positions nearest x.

There are no subsequences within distance .1 of minilist:

nF(minilist, {All, .1})

There are 2 within distance .25:

nF(minilist, {All, .2})
{{{0.473371, 1.18655, -0.703937}, 4590}, 
{{0.473238, 1.2483, -0.690072}, 6032}}

How to identify numeric values in a dataframe column with more than 10+ digits using pyspark

I am trying to identify numeric values from a column. I did the below option to achieve the same.

But for ‘7877177450’ it is showing as non-numeric.According to my scenario the ID’s can be number with 10+ digits also.

How to make that work?

values = (('695435',),('7877177450',),('PA-098',),('asv',),('23456123',))
df = sqlContext.createDataFrame(values,('ID',))
df = df.withColumn("Status",F.when((col("ID").cast("int").isNotNull()) ,lit("numeric")).otherwise(lit("non-numeric")))

|        ID|
|    695435|
|    PA-098|
|       asv|
|  23456123|

|        ID|     Status|
|    695435|    numeric|
|    PA-098|non-numeric|
|       asv|non-numeric|
|  23456123|    numeric|

How does Windows Setup identify new product key that’s being sold without internet?

If you boot to Windows Setup, the setup will ask for product key.
On most cases, you can’t access the internet. So the setup program don’t even know does that product key exists.

So how does Windows Setup knows that the product key is valid if you, for example bought a copy at yesterday?

Does Microsoft just pre-entered millions of product key combination into the setup, then sell the product key?
Is there a specific product key pattern that no one knows?
Or are the key list updated when every new version comes out?

Identify which mining pool mined a block

After reading few Q&A it seems the only ways to identify mining pool from a block is coinbase text or output address of coinbase transaction if a known address is used for rewards and fees.

Can we add something in Bitcoin protocol that makes it easier to identify which mining pool mined a block?

If we had better ways to identify or register mining pools regularly and reject blocks based on certain rules it can be helpful in soft forks activation mechanism.

For example:

  1. All mining pools are informed about a soft fork, they discuss it and don’t have any issues with it.

  2. Every full node maintains a list of addresses associated with mining pools. This list is automatically created using coinbase text and address used for coinbase transaction in next 2016 blocks.

  3. During signalling for a soft fork if any mining pool changes it’s opinion which affects Bitcoin development, it will get less reward. Any block mined by bad actor with wrong reward is rejected. Any block mined by someone that does not belong to the list is rejected. This can be followed for next 1 year and remaining amount can be equally distributed to other pools.

Change in opinion can be because of many reasons including legit concerns or arguments. The only way to manage such exceptions is define a time period until which opinion can be changed followed by proper communication. For example: Mining pools cannot change their opinion after 75% signalling in support or last couple of weeks (whichever comes first)

Why do I think this is necessary?

  1. Mining pools already have rewards associated with their work. Invalid blocks are rejected by nodes. However, mining pools still have lot of freedom to include any transactions in blocks. Recently we have even seen few mining pools involved in censorship.

  2. Miners are involved in Bitcoin for incentives. Not every miner is a cypherpunk or care about security of the network. We need to define how much involvement such businesses have in changing Bitcoin protocol.

  3. Lot of people are concerned about risks involved in UASF but it’s not difficult to attack Bitcoin or affect Bitcoin development for a government or few altcoins by getting involved in mining, make money and misuse the opportunities given with no risks involved. Iran, Pakistan, Russia, Venezuela, China, US, etc. getting involved in mining can affect Bitcoin development.

python – How to identify characters from user input in MAD calculator

so my teacher asked me another question witch was to create a MAD calculator with mean too.and I tried really hard and it just doesn’t work we’ve tried for loops but that didn’t work either. Here is the code.

input = list(map(float ,input('enter number here:').split(',')))
mean = sum(input)/len(input)
bob = sum(input) - mean
deviation = bob/mean

pathfinder 1e – How can I identify which spells are incompatible with Merciful Spell?

The answers to this question indicate that the Merciful Spell feat can’t be used on Summon Monster spells, since they don’t deal damage directly. This raises the question of which other spells are also incompatible with Merciful Spell. For example:

  • Can you create a Merciful Spike Growth? Unlike Summon Monster, it mentions the damage that it inflicts in the spell description. However, the damage is still indirect, and I’m pretty confident that Merciful Create Pit doesn’t work.
  • Can you summon a Merciful Spiritual Weapon? Like Summon Monster, it isn’t doing direct damage. On the other hand, there is the Merciful weapon enchantment, and you can strike non-lethally even with a normal weapon.
  • Can you cast a Merciful Acid Arrow? It’s similar to a direct damage spell, but it’s still a conjuration (creation) effect. Also, since the acid lasts several rounds, in a sense it’s like trying to inflict nonlethal damage with an Alchemist’s Fire.
  • How about Merciful Sirocco? The damage is ongoing and arguably an environmental effect, but as an evocation spell it’s arguably more like Fireball than Create Pit.

An ideal answer would cite or suggest some kind of general rule for identifying incompatible spells, such as “Merciful Spell only works on instantaneous spells” or “Merciful Spell doesn’t work on spells that bypass spell resistance”. However, answers for these specific spells would still be helpful, since they would provide at least some guidance.

10 Ways To Identify A Scammer

Any email, phone call or message that starts with “Hello dear…”. Nobody calls you “dear”, let alone someone who doesn’t know you or just “friended” you. Yes, I know, probably the wife calls you that, but take it from me, unless you’re just back from your honeymoon, she’s probably out to scam you too if she says that.

Any offer of some major inheritance, some mega offer of some millions for a little tiny fee (especially coming from some particular continent). Obviously you’ll never get your “prize” and they’ll just rip you off their commission plus your bank details. Believe me, if someone really had some millions to dispose of, they wouldn’t be offering you the biggest cut.

Any young thing in over sexy clothes or way too beautiful to be after your aging looks, sending you a friend request is out to get you. Double points if “she” has only one pic and has just opened her profile the other day. Triple points if all her handful of “friends” happen to be rather a different race and gender, have unprounceable names, and are way out of league to the sexy beauty in the pic. Take it from me, you’re probably chatting with some ugly dude with hairy balls with a particular liking to your back accounts.

Any social “date” you just connected with who happens to be “serious”, wanting to hitch up with you in their first message, or are already declaring their unconditional love just by looking at your profile pic for 10 seconds flat. Double points if they are also “god-fearing” and have only “serious intentions”, yeah, now like seriously intending to rip you off. Yes I know, your pastor or worse, your priest is likely god-fearing too, but then again you should never trust a man wearing a skirt.

Any email or communication referring to an invoice, a transaction, a statement of an item you never bought, ordered, or transacted with is out to get you. Double points if there’s an attachment or a link to open. If you didn’t order it, no one is about to send you anything you didn’t pay for. Even if they did, wait till you actually get it before checking any correspondence. In case of doubt, never click links in dubious emails. Go back to your actual accounts and services, and check your online inbox there. If there’s any information message or communication from some supplier, it’s bound to be there.

Any get-rich-scheme that has pages and pages of text to go through with marketing videos, dubious testimonials, and half-price or incredible offers, or massive discounts. Double points if the offer is “one-time” and magically expires in 24hrs unless you take it. Believe me, if the scheme was that good, the creator or originator would have gotten rich off it and wouldn’t need to market dubious or “amazing” solutions to make a living. Triple points if the browser window pops up an additional last-minute-offer-you-can’t-refuse when you try to close it or navigate away.

Any U.S. “servicemen” or “woman” who just happens to be in service in Afghanistan or happens to be on a “peace-keeping” mission in some dubious southern continent and so happens to break military protocol and disclose their location and mission readily to the first internet stranger they come across. Always in exchange for some gift card or some help, of course. I mean, everybody loves to do his bit for love of God and country, right? If you have to help out find a retired homeless veteran and appease your conscience rather than your hard-earned savings.

Any customer support agent from “Microsoft”, “Amazon” or “Google” who so happens to have nothing to do as to call you to “help you out” with the software, hardware or system they didn’t even know you had. Believe me, if you had an issue and you needed customer support from any service provider, you are going to be the one chasing them, not the other way round. And when that happens, they’re going to drive you round the bend to actually admit you even have an issue, let alone be calling you themselves.

Any response from a supposed supplier of service provider you typically do business with, to send payments or wire transfer funds to a different bank account or different payment method or channel other than what you normally use. Always double check with the original source, ideally via a different communication channel to verify any dubious or unusual request however genuine it may appear. Most especially, never click links in such requests but go to the source provider’s official page and login or query there.

Basically, anything, anyone, any offer, any service, or any product that looks too good to be true, usually just is just that. If that person, item or service was that great, what are the chances you’re going to come across it just like that. Be realistic, nobody is going to go to lengths to help you out or offer you a golden or magical solution to your financial, emotional or physical needs and whims. If something was that appealing or incredible to start with, what are the chances someone is actual chasing you out of the blue to offer of to you? Nothing in life is presented on a silver platter and there’s nothing like a free lunch. Unless of course it is attached to a sharp hook at the end of a fishing line…


Profits from games of knowledge:

dnd 5e – Is there a spell, ability or magic item that will let a PC identify who wrote a letter?

There is a good chance that this will not be available to your players since it is specifically a Knowledge Domain Cleric’s 17th level feature, but it is as far as I can find the most official way to get the information. The relevant portions of the feature are:

Starting at 17th level, you can call up visions of the past that relate to an object you hold or your immediate surroundings. You spend at least 1 minute in meditation and prayer, then receive dreamlike, shadowy glimpses of recent events.

Object Reading. Holding an object as you meditate, you can see visions of the object’s previous owner. After meditating for 1 minute, you learn how the owner acquired and lost the object, as well as the most recent significant event involving the object and that owner.

There is a very good chance none of your players is a Knowledge Domain Cleric, let alone a 17th level one. However, perhaps they could go on a quest to find one and earn their services. A more accessible option may be more appropriate though.

Because the specifics of your situation, it may be possible to use Locate Object to find the other half of the pair of scrolls. This is a bit situational and requires a bit of DM ruling, but I would probably allow it. Here is the relevant text:

the spell can locate the nearest object of a particular kind, such as a certain kind of apparel, jewelry, furniture, tool, or weapon.

This spell can’t locate an object if any thickness of lead, even a thin sheet, blocks a direct path between you and the object.

The DM would have to rule how specific a “particular kind” of object can be, but if you put your own scroll into a lead-lined box then locating another of that “kind” of object should be possible so long as it isn’t too far away.

Xanathar’s Guide to Everything included a section that offers guidance and optional features for the use of various tools that players might be proficient in. For the Forger’s Kit it suggests that the kit (or proficiency with the kit) could be helpful in detecting forgeries, in this case combined with either an Arcana check:

A forgery kit can be used in conjunction with the Arcana skill to determine if a magic item is real or fake.

Or with an Investigation check:

When you examine objects, proficiency with a forgery kit is useful for determining how an object was made and whether it is genuine.

If none of the players are proficient with a Forgery Kit, then this could be another situation where they find an appropriate NPC to deal with. Given the secretive organization they’re working for, they might already be familiar with the sort of secretive person who might have knowledge of forgeries.

Other options

Divination and Commune are spells that allow players to ask questions to a deity, and thus have a lot of flexibility for DM interpretation. Of the two Commune seems more useful, but there’s still no guarantee it would work. Scrying could be argued, though even with the most favorable ruling it’s still a saving throw.

Additionally, it’s common in my experience to allow players to roll a skill check for interesting ideas, even if there isn’t a clear rule saying it’s possible. Maybe the Wizard wants to try to trace the magical connection with their general “sense” for magic honed over years of training. Or maybe someone wants to try to trip up an imposter, referencing some made up history with the contact and seeing how they react. It depends on what you and your players find interesting and entertaining.