zipcode | 易学教程

Select records based on the postal code and it's radius in MySQL

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问题 Below is my postal table with a few records. In fact this table contains all cities and all postal codes. id city postalcode latitude longitude 1 Drogteropslagen 7705 PA 52.61666700 6.50000000 2 Coevorden 7740 AA 52.66666700 6.75000000 3 Emmen 7812 TN 52.78333300 6.90000000 4 Emmer-Compascuum 7881 PZ 52.81666700 7.05000000 5 Nieuw-Dordrecht 7885 AA 52.75000000 6.96666700 Below is my company table with it's postal code and the radius in kilometers where each company is able to provide his

MySQL - Perl: How to get array of zip codes within submitted “x” miles of submitted “zipcode” in Perl example

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问题 I have found many calculations here and some php examples and most are just over my head. I found this example: SELECT b.zip_code, b.state, (3956 * (2 * ASIN(SQRT( POWER(SIN(((a.lat-b.lat)*0.017453293)/2),2) + COS(a.lat*0.017453293) * COS(b.lat*0.017453293) * POWER(SIN(((a.lng-b.lng)*0.017453293)/2),2))))) AS distance FROM zips a, zips b WHERE a.zip_code = '90210' ## I would use the users submitted value GROUP BY distance having distance <= 5; ## I would use the users submitted value But, I

Making sure that a user can't submit less than 5 numbers for zip code in a JavaScript form

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问题 I am building a registration form and I need a way of preventing users from submitting less than 5 numbers for the zip code. When I comment out my attempt for the else if entirely, the other function (making sure that users won't submit any letters) works. I am using return false at the end so that the form won't submit and I can test for bad input. Sorry for the lack of jsfiddle - it wouldn't let me submit forms for some reason (I am a noob, so that may be the reason). Here's a snippet of my

Zipcode validation that shows an error for particular states

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问题 I'm trying to create a form that pops-up an error when people insert a specific zip code or range of zip codes. For example: If a potential lead fills out a form and enters a Washington state zip code I'd then want an error to pop-up to say we don't offer the product in that state. I've search Google and Stackoverflow but still haven't found a working example of code... I've seen ones that are similar but not exactly what my example says. the example I'm looking for could be in javascript or

Enter zipcode and display users within a certain radius

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问题 I have a Meteor app where product providers enter their zip code when registering. This data is stored in users.profile.zipcode. Flow: 1. Anyone visiting the site can enter a zip code in a search field. 2. A list of product providers with zipcodes within 10 kilometers of that zip code is displayed. The app will be for Norwegian users to begin with, but will maybe be expanded to different countries in the future. Can someone provide me with example code of how this can be done, i guess using

MySql最左前缀原则

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最左前缀原则通过实例理解单列索引、多列索引以及最左前缀原则实例：现在我们想查出满足以下条件的用户id： mysql>SELECT ｀uid｀ FROM people WHERE lname｀=’Liu’ AND ｀fname｀=’Zhiqun’ AND ｀age｀=26 因为我们不想扫描整表，故考虑用索引。单列索引： ALTER TABLE people ADD INDEX lname (lname); 将lname列建索引，这样就把范围限制在lname=’Liu’的结果集1上，之后扫描结果集1，产生满足fname=’Zhiqun’的结果集2，再扫描结果集2，找到 age=26的结果集3，即最终结果。由于建立了lname列的索引，与执行表的完全扫描相比，效率提高了很多，但我们要求扫描的记录数量仍旧远远超过了实际所需要的。虽然我们可以删除lname列上的索引，再创建fname或者age 列的索引，但是，不论在哪个列上创建索引搜索效率仍旧相似。 2.多列索引： ALTER TABLE people ADD INDEX lname_fname_age (lame,fname,age); 为了提高搜索效率，我们需要考虑运用多列索引,由于索引文件以B－Tree格式保存，所以我们不用扫描任何记录，即可得到最终结果。注：在mysql中执行查询时，只能使用一个索引

Python - Loading Zip Codes into a DataFrame as Strings?

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问题 I'm using Pandas to load an Excel spreadsheet which contains zip code (e.g. 32771). The zip codes are stored as 5 digit strings in spreadsheet. When they are pulled into a DataFrame using the command... xls = pd.ExcelFile("5-Digit-Zip-Codes.xlsx") dfz = xls.parse('Zip Codes') they are converted into numbers. So '00501' becomes 501. So my questions are, how do I: a. Load the DataFrame and keep the string type of the zip codes stored in the Excel file? b. Convert the numbers in the DataFrame

lightweight python library to query city/state name by zip code?

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问题 Pretty simple here, I'm looking for a lightweight library that will allow me to lookup a city/state pairing for a given zip code. I am using django FWIW. Thanks in advance. 回答1: Try pyzipcode. An example from the home page: >>> from pyzipcode import ZipCodeDatabase >>> zcdb = ZipCodeDatabase() >>> zipcode = zcdb[54115] >>> zipcode.zip u'54115' >>> zipcode.city u'De Pere' >>> zipcode.state u'WI' >>> zipcode.longitude -88.078959999999995 >>> zipcode.latitude 44.42042 >>> zipcode.timezone -6 回答2

Cities to Metropolitan areas

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I have a database of cities (in both the US and the rest of the world). The database entries are simple text strings. Currently the database contains even small cities (population 10,000). I wish to use a larger scale database instead, by assigning the cities into larger geographical\metropolitan areas. An example can be the Metropolitan areas in Google's AdWords API: http://code.google.com/intl/iw-IL/apis/adwords/docs/developer/adwords_api_us_metros.html but I have no problem using other databases instead. I'd be grateful for any advice on how this can be performed using existing databases

Normalize an Address

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问题 I am trying to normalize an address. The diagram below shows the relevant tables for this question I believe. I want to know how ZipCodes should be integrated into the model. This would be for international addresses so I know that a Zip/PostalCode is not used everywhere. I think City::ZipCode is 1::0-n (I have read others saying this is not always the case but they never provided evidence). If they are correct then I guess this would be a many-to-many relationship. Since each Address can