Patent Assignment Data Restructure
In order to restructure the current patent dataset, the data requires rigorous cleaning. The primary areas for improvement are:
| Patent Assignment Data Restructure | |
|---|---|
| Project Information | |
| Project Title | Patent Data Restructure |
| Owner | Marcela Interiano, Sonia Zhang |
| Start Date | 201701 |
| Deadline | 201705 |
| Keywords | Patent, Data |
| Primary Billing | |
| Notes | |
| Has project status | Active |
| Subsumes: | Patent Data (Wiki Page), Patent Data Cleanup - June 2016, Patent Data Extraction Scripts (Tool), USPTO Bulk Data Processing |
| Copyright © 2016 edegan.com. All Rights Reserved. | |
- 1. Clean ptoassignment table to unique keys.
- 2. Clean ptoproperties to remove nonutility patents. The patent numbers currently include:
- 7 digit patent numbers
- application numbers
- unknown numbers that cannot be matched to patent numbers in the patent table
- 20090108066
- 20100007288
- 20090108066
- 20100110022
- Design and Reissue patents ('%D%' or '%RE%')
- alphanumeric character strings
- 3. Restructure address information in ptoassignee table to extract meaningful information
- 4. Verify that cleaned patent documentids correspond to patent numbers or application numbers in the patent table
- 5. Restructure address information in ptoassignment table
- 6. Transform structure of the dataset
Semester Plan
The final deliverable for the semester is a table with the following structure:
Reel No | Frame No | Invention Title | Filing Date | Patent No | Application No | Publication No | Match By
The schema of the table will be:
Column | Type | Modifiers -----------------+-----------------------+----------- Reel No | integer | Frame No | integer | Invention Title | character varying(500)| Filing Date | date | Patent No | integer | Application No | integer | Publication No | integer | Match By | integer |
Currently the pto tables contain varying identifiers for one invention title that is involved in a reassignment. The purpose of the table is to have each identifier for an invention title listed in a single row, making it easy to track the invention through various transactions. The Match By column will inform the user which identifier should be used to match to other tables in the patent database.
Data Cleanup Progress
Patent Number Cleanup
The goal is to only have assignment records on utility patents. The patents in ptoproperty include alphanumerics which represent reissue and design patents as well as mistakes in the data input. Additionally, the documentids include application numbers or ids and publication numbers. The ptoproperty table stores the patent ids as character strings.
First the duplicates were dropped from the ptoproperty table creating ptoproperty_cleaned.
SELECT COUNT(*) FROM (SELECT DISTINCT * FROM ptoproperty) As T; --27266638 SELECT COUNT(*) FROM ptoproperty_cleaned; --27266638
Next, the Reissue and Design patents were removed.
SELECT COUNT(*) FROM ptoproperty WHERE documentid LIKE 'RE%'; --38512
SELECT COUNT(*) FROM ptoproperty WHERE documentid LIKE 'D%'; --1128247
Restructure Address Information
The dbase is patent.
The table is ptoassigneend.
SQL code and other things are in:
E:/McNair/Projects/PatentAddress
IO files are on the dbase server in:
Z:/PatentAddress
Extract Address Information
1. Introduction
- Five features (addrline1, addrline2, city, country, postcode) in the table contain address information.
- Features addrline1, addrline2 and city are not cleaned. They have city, country and postcode information.
- The object of this project is to extract city, country and postcode information from the three features above.
- By now, we only focus on cleaning American patents.
2. Postcode(U.S.)
U.S. post code follows the pattern [five digits - four digits]. In this way, U.S. patents can be extracted by searching for post code with regular expression
'(^|\s)\d{5}-\d{4}($|\s)'
For example,
city | postcode_city NEW YORK, NY 10022-3201 | 10022-3201 BEAVERTON, OREGON 97005-6453 | 97005-6453 SANTA BARBARA, CA 93130-3003 | 93130-3003 NEW YORK NY 10022-3201 | 10022-3201 SUNNYVALE, CA 94088-3453 | 94088-3453 94088-3470 | 94088-3470 CS 46510-35065 RENNES CEDEX | 46510-3506 NEW YORK, NY 10013-2412 | 10013-2412 OALKLAND, CA 94612-3550 | 94612-3550 OXFORD CT 06483-1011 | 06483-1011
The extracted post code records are stored in table ptoassigneend_missus_final.
SQL code is in:
E:/McNair/Projects/PatentAddress/RxPostcode.sql
3. State (U.S.)
Some patterns can be used to extract state information.
a. '[,] State Postcode'
The state and post code are always together, separated by a space. We can extract state information with regular expression
'([,]|[.])\s\w{2,}\s{0,}\w{0,}\s{1,}\d{5}[-]\d{4}'
SQL Code:
WHEN city ~* '([,]|[.])\s\w{2,}\s{0,}\w{0,}\s{1,}\d{5}[-]\d{4}'
THEN LTRIM(RTRIM(replace(regexp_replace(SUBSTRING(city, '[,]\s\w{2,}\s{0,}\w{0,}\s{1,}\d{5}[-]\d{4}'), '\d{5}-\d{4}', ),',',)))
Examples:
city | state_city NEW YORK, NY 10022-3201 | NY BEAVERTON, OREGON 97005-6453 | OREGON SANTA BARBARA, CA 93130-3003 | CA SUNNYVALE, CA 94088-3453 | CA NEW YORK, NY 10013-2412 | NY OALKLAND, CA 94612-3550 | CA SANTA CLARA, CA 95052-8090 | CA PEORIA, IL 61629-6490 | IL MIDVALE, UTAH 84047-1408 | UTAH OAKLAND, CA 94612-3550 | CA HARRISBURG, PA 17105-3608 | PA ROCHESTER, NY 14650-2201 | NY NEW YORK, NY 10013-2412 | NY HOUSTON, TEXAS 77256-6571 | TEXAS BROOKINGS, SOUTH DAKOTA 57006-0128 | SOUTH DAKOTA
b. '\s State(abbreviation) Postcode'
'(^|\s)\w{2}\s{1}\d{5}[-]\d{4}'
SQL code:
WHEN city ~* '(^|\s)\w{2}\s{1}\d{5}[-]\d{4}'
THEN regexp_replace(SUBSTRING(city, '\w{2}\s{1,}\d{5}[-]\d{4}'), '\d{5}-\d{4}', )
Examples:
NEW YORK NY 10022-3201 |NY WAUKEGAN IL 60085-2195 |IL
c. 'D.C.'
'D[.]C[.]\s\d{5}-\d{4}'
SQL code:
WHEN city ~* 'D[.]C[.]\s\d{5}-\d{4}'
THEN 'D.C.'
d. 'A CORP.* OF [State]'
This pattern is not reliable. When addrline1 looks this way, addrline2 always provide more detailed address information than addrline2. Besides, a great part of state info extracted from 'A CORP.* OF [State]' doesn't match the state extracted from detailed addrline2. In this way, we discard this pattern.
Examples:
A CORP. OF NEW YORK | ONE LINCOLN FIRST SQUARE, ROCHESTER, NEW YORK, NY 14601-0054 A CORPORATION OF NY | 550 MADISON AVENUE, NEW YORK, NY 10022-3201 A NON-PROFIT CORP. OF WASHINGTON | 4225 ROOSEVELT WAY NE, STE. 303 SEATTLE, WA 98105-6099 A CORP. OF MN | 2611 NORTH SECOND ST., MINNEAPOLIS, MN 55411-1633 A CORPORATION OF DE | 612 WHEELER'S FARM RD. MILFORD, CT 06460-8719 A CORP. OF WA. | 411 FIRST AVENUE SOUTH SEATTLE, WASHINGTON 98104-2871 A CORPORATION OF OREGON | ONE BOWERMAN DRIVE, BEAVERTON, OREGON 97005-6453 A CORPORATION OF | ONE BOWERMAN DRIVE BEAVERTON, OR 97005-6453 A CORP. OF INDIANA | 4810 TECUMSEH LANE, POST OFFICE BOX 15190 EVANSVILLE, INDIANA 47716-0190 A CORPORATION OF PA | 7200 SUTER ROAD, COOPERSBURG, PA 18036-1299 A CORP. OF DE | SCARBORO & BEAR CREEK ROAD, P.O. BOX 2009 OAK RIDGE, TENNESSEE 37831-8014
If you're interested, the SQL code is
WHEN addrline1 ~* 'CORP.*OF(\s|$)' THEN LTRIM(RTRIM(SUBSTRING(regexp_replace(SUBSTRING(addrline1, 'CORP.*OF.*'),'CORP.*OF', ), 1, 18)))
- Summary
The extracted state records are stored in the table ptoassigneend_missus_final.
SQL code is in:
E:/McNair/Projects/PatentAddress/RxPostcode.sql
4. City (U.S.)
Some patterns can be used to extract city information.
Three lists of samples extracted from addrline1, addrline2 and city are used to summarize the patterns. They are in
Z:/PatentAddress/
a. '\s{2,} CityName [,] State Postcode'
SQL code:
CASE WHEN addrline1 ~* '\s{2,}\w{1,}\s{0,}\w{0,}\s{0,}[,]\s{0,}\w{1,}\s{0,}\w{0,}\s{0,}\d{5}[-]\d{4}'
THEN LTRIM(RTRIM(REPLACE(SUBSTRING(SUBSTRING(addrline1, '\s{2,}\w{1,}\s{0,}\w{0,}\s{0,}[,]\s{0,}\w{1,}\s{0,}\w{0,}\s{0,}\d{5} [-]\d{4}'),'.*[,]'),',',)))
Examples:
800 CHRYSLER DR. EAST AUBURN HILLS, MICHIGAN 48326-2757 |AUBURN HILLS 550 MADISON AVENUE NEW YORK, NEW YORK 10022-3201 |NEW YORK P.O. BOX 15439 WILMINGTON, DE 19850-5439 |WILMINGTON
Some noise exists (just a little).
1313 N. MARKET STREET HERCULES PLAZAWILMINGTON, DE 19894-0001
b. '[,]\s{1,} CityName [,] State Postcode'
SQL code:
CASE WHEN addrline1 ~* '\s{2,}\w{1,}\s{0,}\w{0,}\s{0,}[,]\s{0,}\w{1,}\s{0,}\w{0,}\s{0,}\d{5}[-]\d{4}'
THEN LTRIM(RTRIM(REPLACE(SUBSTRING(SUBSTRING(addrline1, '\s{2,}\w{1,}\s{0,}\w{0,}\s{0,}[,]\s{0,}\w{1,}\s{0,}\w{0,}\s{0,}\d{5}[-]\d{4}'),'.*[,]'),',',)))
Example:
920 DISC DRIVE, SCOTTS VALLEY, CA 95067-0360 |SCOTTS VALLEY 550 MADISON AVENUE, NEW YORK, NY 10022-3201 |NEW YORK BALLSTON TOWER ONE 800 NORTH QUINCY STREET, ARLINGTON, VA 22217-5660 |ARLINGTON
c. 'CityName [,] State Postcode' (no leading spaces)
SQL code:
WHEN addrline1 ~* '^\w{1,}\s{0,}\w{0,}\s{0,}[,]\s{0,}\w{1,}\s{0,}\w{0,}\s{0,}\d{5}[-]\d{4}'
THEN REPLACE(SUBSTRING(SUBSTRING(addrline1, '^\w{1,}\s{0,}\w{0,}\s{0,}[,]\s{0,}\w{1,}\s{0,}\w{0,}\s{0,}\d{5}[-]\d{4}'), '.*[,]'),',', )
Examples:
PHILADELPHIA, PA 19104-3147 |PHILADELPHIA ROCHESTER, NY 14650-2201 |ROCHESTER
d. 'CityName State(abbreviation) Postcode' (no leading spaces)
SQL code:
WHEN addrline1 ~* '^\w{1,}\s{0,}\w{0,}\s{0,}\w{2}\s{0,}\d{5}[-]\d{4}'
THEN regexp_replace(SUBSTRING(addrline1, '^\w{1,}\s{0,1}\w{0,}\s{1,}\w{2}\s{0,}\d{5}[-]\d{4}'), '\w{2}\s\d{5}[-]\d{4}', )
Examples:
TARRYTOWN NY 10591-6706 |TARRYTOWN
e. Special cases
Examples:
BATON, ROUGE, LA 70809-4562 ('BATON ROUGH' is separated by a comma)
ST. PAUL, MIN 55133-3427 ('ST. PAUL' contains a dot)
QUINCY STREETARLINGTON, VA 22217-5660 (no space between street and city name :(
SQL code:
CASE WHEN addrline1 ~* 'BATON[,] ROUGE[,]\s{1}LA'
THEN 'BATON ROUGE'
WHEN addrline1 ~* 'ST[.]\s{1}PAUL'
THEN 'ST. PAUL'
WHEN addrline1 ~* 'ARLINGTON[,]\s{1}VA'
THEN 'ARLINGTON'
Noise:
- CityName State (full name) Postcode' (no leading spaces)
NEW YORK NEW YORK 10022-3201
This pattern can't be identified because of much noise.
- 'CityName Postcode' (no leading spaces)
LITTLE ELM 75068-3787 OAK RIDGE 37831-6498
This pattern can't be identified because of the noise:
MASSACHUSETTS 02780-7319 ('State Postcode')
- no space between street and city name :(
BOX 87703CHICAGO, IL 60680-0703
SQL code is in:
E:/McNair/Projects/PatentAddress/RxCity.sql
5. Output (Tables)
- ptoassigneend_allus
This table contains all the U.S. patents extracted from ptoassigneend table. The rule to generate this table is 'country = 'UNITED STATES' ' or any of the features contains U.S. postcode.
Noise exists because of postcode errors.
The ptoassigneend_allus table may miss some U.S. patents which lose postcode records.
SQL code:
CREATE TABLE ptoassigneend_allus AS
SELECT * FROM ptoassigneend
WHERE city ~* '.*\d{5}[-]\d{4}.*' OR addrline1 ~* '.*\d{5}[-]\d{4}.*' OR
addrline2 ~* '.*\d{5}[-]\d{4}.*' OR postcode ~* '.*\d{5}[-]\d{4}.*' OR
country ~* 'UNITED STATES';
SELECT 3572682
Table "public.ptoassigneend_allus" Column | Type | Modifiers reelno | integer | frameno | integer | name | character varying(500) | addrline1 | character varying(500) | addrline2 | character varying(500) | city | character varying(500) | state | character varying(500) | country | character varying(500) | postcode | character varying(80) |
- ptoassigneend_missus_final
State and postcode information extracted from addrline1, addrline2 and city columns are stored in this table. See section 2 and 3.
This table is a subset of ptoassigneend_allus table.
Table "public.ptoassigneend_missus_final"
Column | Type | Modifiers
reelno | integer |
frameno | integer |
name | character varying(500) |
addrline1 | character varying(500) |
addrline2 | character varying(500) |
city | character varying(500) |
state | character varying(500) |
country | character varying(500) |
postcode | character varying(80) |
postcode_city | text |
postcode_addr1 | text |
postcode_addr2 | text |
state_city | text |
state_addr1 | text |
state_addr2 | text |
postcode_city is the postcode extracted from 'city'; postcode_addr1 is the postcode extracted from 'addrline1'; postcode_addr2 is the postcode extracted from 'addrline2'.
state_city is the state name extracted from 'city'; state_addr1 is the state name extracted from 'addrline1'; state_addr2 is the state name extracted from 'addrline2'.
- ptoassigneend_missus_city_final
City information are extracted from addrline1, addrline2 and city columns and are stored in ptoassigneend_city table. See section 4.
This table is a subset of ptoassigneend_allus table.
Table "public.ptoassigneend_missus_city_final" Column | Type | Modifiers reelno | integer | frameno | integer | name | character varying(500) | addrline1 | character varying(500) | addrline2 | character varying(500) | city | character varying(500) | state | character varying(500) | country | character varying(500) | postcode | character varying(80) | city_addr1 | text | city_addr2 | text | city_city | text |
city_city is the city name extracted from 'city'; city_addr1 is the city name extracted from 'addrline1'; city_addr2 is the city name extracted from 'addrline2'.
- ptoassigneend_us_extracted
Contain all the original features as well as city, state and postcode info extracted from features addrline1, addrline2 and city.
Merge ptoassigneend_missus_final and ptoassigneend_missus_city_final with:
CREATE TABLE ptoassigneend_us_extracted AS SELECT a.*, b.city_addr1, b.city_addr2, b.city_city FROM ptoassigneend_missus_final a LEFT JOIN ptoassigneend_missus_city_final b ON a.reelno = b.reelno AND a.frameno = b.frameno AND a.name = b.name AND a.addrline1 = b.addrline1 AND a.addrline2 = b.addrline2 AND a.city = b.city;
Table "public.ptoassigneend_us_extracted"
Column | Type | Modifiers
reelno | integer |
frameno | integer |
name | character varying(500) |
addrline1 | character varying(500) |
addrline2 | character varying(500) |
city | character varying(500) |
state | character varying(500) |
country | character varying(500) |
postcode | character varying(80) |
postqcode_city | text |
postcode_addr1 | text |
postcode_addr2 | text |
state_city | text |
state_addr1 | text |
state_addr2 | text |
city_addr1 | text |
city_addr2 | text |
city_city | text |
Master Table
To do:
a. Create a Master Table with the original features and (postcode, city, and state, coutry) summarized. Judge by myself
Postcode
Reminder: postcode_city is the postcodes extracted from 'city'; postcode_addr1 is the postcodes extracted from 'addrline1'; postcode_addr2 is the postcodes extracted from 'addrline2'.
The postcode_city, postcode_addr1 and postcode_addr2 are consistent.
Examples:
postcode_addr1 | postcode_addr2 90401-1708 | 90401-1708 37831-8243 | 37831-8243
The issue is the inconsistency between postcode and (postcode_city, postcode_addr1 and postcode_addr2).
- Inconsistency between postcode and postcode_addr1
postcode_addr1 beats postcode because addrline1 is detailed. For example:
addrline1 | postcode_addr1 | postcode_new P.O. BOX 6 / 83707-0006 | 83707-0006 | 83716 BLDG. C01, M.S. A126 P.O. BOX 80028 LOS ANGELES, CA 90080-0028 | 90080-0028 | 90045 P. O. BOX 1407, HOUSTON, TEXAS 77251-1407 | 77251-1407 | 77042 841 3RD, LONGVIEW, WASHINGTON 98632-0189 | 98632-0189 | 95404 2210 W. OAKLAWN, 72762-6999 | 72762-6999 | 72765-2020 BLDG. CO1, M.S. A126, P.O. BOX 80028 LOS ANGELES, CA 90080-0028 | 90080-0028 | 90045 P.O. BOX 6 / 83707-0006 | 83707-0006 | 83716
- Inconsistency between postcode and postcode_addr2
postcode_addr2 beats postcode because addrline2 is detailed.
Example:
addrline2 | postcode_addr2 | postcode_new P.O. BOX 6 / 83707-0006 | 83707-0006 | 83716-9632 P.O. BOX 5800 - MS0161, ALBUQUERQUE, NEW MEXICO 87185-0161 | 87185-0161 | 87123-0161 P.O. BOX 674412, HOUSTON, TEXAS 77267-4412 | 77267-4412 | 77002 WASHINGTON, DC 20250-1400 | 20250-1400 | 61604 BOX 10076, HATTIESBURGH, MISSISSIPPI 39406-0076 | 39406-0076 | 39402 P.O. BOX 674412, HOUSTON, TEXAS 77267-4412 | 77267-4412 | 77032 P.O. BOX 6 / 83707-0006 | 83707-0006 | 83716-9632 P.O. BOX 6 / 83707-0006 | 83707-0006 | 83716-9632 P.O. BOX 27115-4191 | 27115-4191 | 27105-4191 P.O. BOX 674412, HOUSTON, TX 77267-4412 | 77267-4412 | 77002
Besides, I randomly picked some records and googled address and postcode. These records support postcode_addr2.
Examples:
Micron Technology, Inc. 8000 South Federal Way Post Office Box 6 Boise 83707-0006 USA Tel: Ph: 208-368-4000
WebsterBank, NA 50 Kennedy Plaza 11th Floor Suite 110 (Mail Stop: PR-105) Providence, RI 02903
- Inconsistency between postcode and postcode_city
postcode_city beats postcode.
city | state | postcode_city | postcode HAUPPAUGE, 11788-8847 | NEW YORK | 11788-8847 | 78759
- Output
SQL code is in:
E:/McNair/Projects/PatentAddress/PostcodeClean.sql
For records of which addrline1, addrline2 and city don't contain postcode info, just clean the feature postcode as the postcode_cleaned
All the cleaned postcodes for U.S. patents are stored in ptoassigneend_us_postcodecleaned. (# 3572604)
State
Reminder: state_city is the states extracted from 'city'; state_addr1 is the states extracted from 'addrline1'; state_addr2 is the states extracted from 'addrline2'.
The state_city, state_addr1 and state_addr2 are consistent.
Examples:
state_addr2 | state_city ILLINOIS | ILLINOIS IL | IL IL | IL CT | CT MN | MN CA | CA
One reason for the inconsistency between state and (state_city, state_addr1 and state_addr2) is the co-existence of abbreviation and full form. So they are the same actually. Otherwise, state_city, state_addr1 and state_addr2 beat feature state because they are detailed.
For records of which addrline1, addrline2 and city don't contain state info, just take feature state as the state_cleaned.
- Output
SQL code is in:
E:/McNair/Projects/PatentAddress/StateClean.sql
All the cleaned states for U.S. patents are stored in ptoassigneend_us_statecleaned. (# 3572605)
City
Reminder: city_city is the cities extracted from 'city'; city_addr1 is the cities extracted from 'addrline1'; city_addr2 is the cities extracted from 'addrline2'.
The city_city, city_addr1 and city_addr2 are consistent.
Examples:
city_addr2 | city_city BOISE | BOISE THOMASVILLE | THOMASVILLE CARROLLTON | CARROLLTON CINCINNATI | CINCINNATI CINCINNATI | CINCINNATI PEORIA | PEORIA OAK RIDGE | OAK RIDGE CARROLLTON | CARROLLTON
Since city_city is extracted from feature city and is cleaned, city_city beats city.
For records of which addrline1, addrline2 and city don't contain city info, just keep feature city as the city_cleaned.
- Output
SQL code is in:
E:/McNair/Projects/PatentAddress/CityClean.sql
All the cleaned cities for U.S. patents are stored in ptoassigneend_us_citycleaned. (# 3572605)
Functions to Simplify SQL Code
Extraction
- Extract Postcode
SQL function:
CREATE OR REPLACE FUNCTION ExtractPostcode(adr text) RETURNS text AS $$ BEGIN
RETURN SUBSTRING(adr, '\d{5}[-]\d{4}'); END;
$$ LANGUAGE plpgsql;
- Extract State
SQL function:
CREATE OR REPLACE FUNCTION ExtractState(adr text) RETURNS text AS $$
SELECT
CASE WHEN adr ~* '([,]|[.])\s\w{2,}\s{0,}\w{0,}\s{1,}\d{5}[-]\d{4}'
THEN LTRIM(RTRIM(replace(regexp_replace(SUBSTRING(adr, '[,]\s\w{2,}\s{0,}\w{0,}\s{1,}\d{5}[-]\d{4}'), '\d{5}-\d{4}', ),',',)))
WHEN adr ~* '(^|\s)\w{2}\s{1}\d{5}[-]\d{4}'
THEN regexp_replace(SUBSTRING(adr, '\w{2}\s{1,}\d{5}[-]\d{4}'), '\d{5}-\d{4}', )
WHEN adr ~* 'D[.]C[.]\s\d{5}-\d{4}'
THEN 'D.C.'
ELSE NULL END AS result;
$$ LANGUAGE SQL;
- Extract City
SQL function:
CREATE OR REPLACE FUNCTION ExtractCity(adr text) RETURNS text AS $$
SELECT
CASE WHEN adr ~* '\s{2,}\w{1,}\s{0,}\w{0,}\s{0,}[,]\s{0,}\w{1,}\s{0,}\w{0,}\s{0,}\d{5}[-]\d{4}'
THEN LTRIM(RTRIM(REPLACE(SUBSTRING(SUBSTRING(adr, '\s{2,}\w{1,}\s{0,}\w{0,}\s{0,}[,]\s{0,}\w{1,}\s{0,}\w{0,}\s{0,}\d{5}[-]\d{4}'),'.*[,]'),',',)))
WHEN adr ~* '[,]\s{0,}\w{1,}\s{0,}\w{0,}\s{0,}[,]\s{0,}\w{1,}\s{0,}\w{0,}\s{0,}\d{5}[-]\d{4}'
THEN LTRIM(RTRIM(REPLACE(SUBSTRING(SUBSTRING(adr, '[,]\s{0,}\w{1,}\s{0,}\w{0,}\s{0,}[,]\s{0,}\w{1,}\s{0,}\w{0,}\s{0,}\d{5}[-]\d{4}'),'[,].*[,]'),',',)))
WHEN adr ~* '^\w{1,}\s{0,}\w{0,}\s{0,}[,]\s{0,}\w{1,}\s{0,}\w{0,}\s{0,}\d{5}[-]\d{4}'
THEN REPLACE(SUBSTRING(SUBSTRING(adr, '^\w{1,}\s{0,}\w{0,}\s{0,}[,]\s{0,}\w{1,}\s{0,}\w{0,}\s{0,}\d{5}[-]\d{4}'), '.*[,]'),',', )
WHEN adr ~* '^\w{1,}\s{0,}\w{0,}\s{0,}\w{2}\s{0,}\d{5}[-]\d{4}'
THEN regexp_replace(SUBSTRING(adr, '^\w{1,}\s{0,1}\w{0,}\s{1,}\w{2}\s{0,}\d{5}[-]\d{4}'), '\w{2}\s\d{5}[-]\d{4}', )
WHEN adr ~* 'BATON[,] ROUGE[,]\s{1}LA'
THEN 'BATON ROUGE'
WHEN adr ~* 'ST[.]\s{1}PAUL'
THEN 'ST. PAUL'
WHEN adr ~* 'ARLINGTON[,]\s{1}VA'
THEN 'ARLINGTON'
ELSE NULL END AS result;
$$ LANGUAGE SQL;
Issues
- Write functions to simplify SQL code.
- Condense Address Information
The address information extracted from addrline1, addrline2 and city is not consistent. For example, the postcode extracted from addrline1 may be different from that extracted from city.
Examples:
| postcode | postcode_addr1 | postcode_addr2 | postcode_city | 77042 | 77251-1407 | | | 83716-9632 | | 83707-0006 | | 90045 | 90080-0028 | |
(postcode_city is the postcode extracted from 'city'; postcode_addr1 is the postcode extracted from 'addrline1'; postcode_addr2 is the postcode extracted from 'addrline2'.)
- Inconsistency between 'addrline' and 'country'
Example:
addrline2 | city | country
2882 SAND HILL ROAD MENLO PARK, CALIFORNIA 94025-7022 | TOKYO | JAPAN
2801 CENTERVILLE ROAD, P.O. BOX 15439 WILMINGTON, DE 19850-5439 | TOKYO | JAPAN
1-6, UCHISAIWAI-CHO 1-CHOME | CHIYODA-KU, TOKYO | JAPAN
MENLO PARK, CA 94025-7022 | TOKYO | JAPAN
| MINATO-KU, TOKYO 10585-8518 | JAPAN
1225 NORTH HIGHWAY 169, MINNEAPOLIS, MINNESOTA 55441-5058 | TOKYO | JAPAN
2882 SAND HILL ROAD MENLO PARK, CA 94025-7022 | TOKYO | JAPAN
3001 ORCHARD PARKWAY SAN JOSE, CALIFORNIA 95134-2088 | TOKYO 107 | JAPAN
3001 ORCHARD PARKWAY SAN JOSE, CA 95134-2088 | MINATO-KU, TOKYO 107 | JAPAN
3001 ORCHARD PARKWAY SAN JOSE, CALIFORNIA 95134-2088 | TOKYO 107 | JAPAN
3001 ORCHARD PARKWAY SAN JOSE, CA 95134-2088 | MINATO-KU, TOKYO 107 | JAPAN
- The post code and zip regex for other countries besides U.S. can be found here:
http://stackoverflow.com/questions/578406/what-is-the-ultimate-postal-code-and-zip-regex
Example:
"US", "\d{5}([ \-]\d{4})?"
"CA", "[ABCEGHJKLMNPRSTVXY]\d[ABCEGHJ-NPRSTV-Z][ ]?\d[ABCEGHJ-NPRSTV-Z]\d"
"DE", "\d{5}"
"JP", "\d{3}-\d{4}"
"FR", "\d{2}[ ]?\d{3}"
- The city feature needs to be standardized. For example, 'GRAND CAYMAN, CAYMAN ISLAND' and 'GRAND CAYMAN' indicate the same city.
- Both state name and its abbreviation exist.
