Pentaho Data Integration - Extract string from string - regex

I have this string:
Goods: 1 pallet 120x80x100 100KG
This is the regex I would use in Ruby:
^Goods: <i>(.*)<br>$
This is what I need as the result:
1 pallet 120x80x100 100KG
How do I do it in Pentaho Data Integration?

There is a step called 'Split Fields', you will feed the column with this data, and set : as delimeter, in the New Fields area you will declare 2 new columns that will receive the split data. This step works pretty much like a Split String per token.

You can also use the Regex Evaluation step, but this one relies on Java regex which are a bit different than Ruby's. However, in your case, it is the same :
^Goods: <i>(.*)<br>$

You can use the same regex in a [Modified] Java Script [Value] step:
^Goods: <i>(.*)<br>$

Related

Extract a list of unique text characters/ emojis from a cell

I have a text in cell (A1) like this:
✌😋👅👅☝️😉🍌🍪💧💧
I want to extract the unique emojis from this cell into separate cells:
✌😋👅☝️😉🍌🍪💧
Is this possible?
You want to put each character of ✌😋👅👅☝️😉🍌🍪💧💧 to each cell by splitting using the built-in function of Google Spreadsheet.
Sample formula:
=SPLIT(REGEXREPLACE(A1,"(.)","$1#"),"#")
✌😋👅👅☝️😉🍌🍪💧💧 is put in a cell "A1".
Using REGEXREPLACE, # is put to between each character like ✌#😋#👅#👅#☝#️#😉#🍌#🍪#💧#💧#.
Using SPLIT, the value is splitted with #.
Result:
Note:
In your question, the value of ️ which cannot be displayed is included. It's \ufe0f. So "G1" can be seen like no value. But the value is existing. So please be careful this. If you want to remove the value, you can use ✌😋👅👅☝😉🍌🍪💧💧.
References:
REGEXREPLACE
SPLIT
Added:
From marikamitsos's comment, I could notice that my understanding was not correct. So the final result is as follows. This is from marikamitsos.
=TRANSPOSE(UNIQUE(TRANSPOSE(SPLIT(REGEXREPLACE(A1,"(.)","$1#"),"#"))))
or try:
=TRANSPOSE(UNIQUE(TRANSPOSE(REGEXEXTRACT(A1, REPT("(.)", LEN(A1))))))
Formula
Appears, one of the best formula solutions would be:
=SPLIT(REGEXREPLACE(A1,"(.)","$1#"),"#")
You may also add some additional checks like skin tones & intermediate chars:
=TRANSPOSE(SPLIT(REGEXREPLACE(A2,"(.[🏻🏼🏽🏾🏿"&CHAR(8205)&CHAR(65039)&"]*)","#$1"),"#"))
It will help to join some emojis as a single emoji.
Script
More precise way is to use the script:
https://github.com/orling/grapheme-splitter/blob/master/index.js
↑
Add the code to Script editor
Add code for sample usage:
function splitEmojis(string) {
var splitter = new GraphemeSplitter();
// split the string to an array of grapheme clusters (one string each)
var graphemes = splitter.splitGraphemes(string);
return graphemes;
}
Tests
Not 100% precise
1
Please note: some emojis are not correctly shown in sheets
🏴󠁧󠁢󠁷󠁬󠁳󠁿🏴󠁧󠁢󠁳󠁣󠁴󠁿🏴󠁧󠁢󠁥󠁮󠁧󠁿🏴
↑ emojis:
flag: England
flag: Scotland
flag: Wales
black flag
are the same for Google Sheets.
2
Vlookup function in #GoogleSheets and in #Excel thinks chars
#️⃣ and
*️⃣
are the same!

Can I make my Alteryx RegEx parse conditional?

I receive messages with the fields below. I want to group and extract the user inputs. Majority of submissions contain all fields and the regex works great. Problem comes in when someone removes additional lines if let's say they only need to fill in down to Amount 1
Name:
Number:
Amount:
Old Code:
Code 1:
Amount 1:
Code 2:
Amount 2:
Code 3:
Amount 3:
Code 4:
Amount 4:
I'm using Alteryx to parse the message contents and have success with my current regex but want to be ready for unavoidable user submission inconsistency
Name:(.+)\sNumber:(.+)\sAmount:(.+)\sOld Code:(.+)\sCode 1:(.+)\sAmount 1:(.+)\sCode 2:(.*?)\sAmount 2:(.*?)\sCode 3:(.*?)\sAmount 3:(.*?)\sCode 4:(.*?)\sAmount 4:(.*?[^-]*)
Is it possible to have Alteryx return parsed results from a message even if a listed field is deleted?
Alteryx issue with new cascading regex
Anyway, you can always do a cascading nested optional grouping around the
lines to just match what's valid up to a point.
This expects the form lines to be in order. If it's not, a different type
of regex is needed - an out-of-order regex ( see the bottom regex ) .
Both these regex are for Perl 5.10
(?-ms)Name:(.*)(?:\s+Number:(.*)(?:\s+Amount:(.*)(?:\s+Old[ ]+Code:(.*)(?:\s+Code[ ]+1:(.*)(?:\s+Amount[ ]+1:(.*)(?:\s+Code[ ]+2:(.*)(?:\s+Amount[ ]+2:(.*)(?:\s+Code[ ]+3:(.*)(?:\s+Amount[ ]+3:(.*)(?:\s+Code[ ]+4:(.*)(?:\s+Amount[ ]+4:(.*?[^-]*))?)?)?)?)?)?)?)?)?)?)?
https://regex101.com/r/9oKXEE/1
For out-of-order matching, use this
(?m-s)\A(?:[\S\s]*?(?:(?(1)(?!))^\h*Name\h*:\h*(.*)|(?(2)(?!))^\h*Number\h*:\h*(.*)|(?(3)(?!))^\h*Amount\h*:\h*(.*)|(?(4)(?!))^\h*Old\h*Code\h*:\h*(.*)|(?(5)(?!))^\h*Code\h*1\h*:\h*(.*)|(?(6)(?!))^\h*Amount\h*1\h*:\h*(.*)|(?(7)(?!))^\h*Code\h*2\h*:\h*(.*)|(?(8)(?!))^\h*Amount\h*2\h*:\h*(.*)|(?(9)(?!))^\h*Code\h*3\h*:\h*(.*)|(?(10)(?!))^\h*Amount\h*3\h*:\h*(.*)|(?(11)(?!))^\h*Code\h*4\h*:\h*(.*)|(?(12)(?!))^\h*Amount\h*4\h*:\h*(.*?))){1,12}
https://regex101.com/r/f2rG1v/1
In this situation, you don't need to use Regex straight off the bat and given the inconsistent data it could take a while to perfect one regex term...
You can do it this way instead:
- RecordID first,
- Then you can use a Text 2 Columns with a new-line (\n) delimiter. Configure this to "Split to Rows".
- You can then use a Text to Columns to split on the delimter ":".
That will handle additional rows entered etc. At that stage, you can figure out how to clean up the results (filter to remove null lines, multi-row to tag records, cross-tab to create a table etc...). If you want to flag any unknown rows, you can have a Text Input with the required rows and use Find/Replace or Join to separate the data.

How to split a string in db2?

I've some URL's in my cas_fnd_dwd_det table,
casi_imp_urls cas_code
----------------------------------- -----------
www.casiac.net/fnds/CASI/qnxp.pdf
www.casiac.net/fnds/casi/as.pdf
www.casiac.net/fnds/casi/vindq.pdf
www.casiac.net/fnds/CASI/mnip.pdf
how do i copy the letters between last '/' and '.pdf' to another column
expected outcome
casi_imp_urls cas_code
----------------------------------- -----------
www.casiac.net/fnds/CASI/qnxp.pdf qnxp
www.casiac.net/fnds/casi/as.pdf as
www.casiac.net/fnds/casi/vindq.pdf vindq
www.casiac.net/fnds/CASI/mnip.pdf mnip
the below URL's are static
www.casiac.net/fnds/CASI/
www.casiac.net/fnds/casi/
Advise, how do i select the codes between last '/' and '.pdf' ?
I would recommend to take a look at REGEXP_SUBSTR. It allows to apply a regular expression. Db2 has string processing functions, but the regex function may be the easiest solution. See SO question on regex and URI parts for different ways of writing the expression. The following would return the last slash, filename and the extension:
SELECT REGEXP_SUBSTR('http://fobar.com/one/two/abc.pdf','\/(\w)*.pdf' ,1,1)
FROM sysibm.sysdummy1
/abc.pdf
The following uses REPLACE and the pattern is from this SO question with the pdf file extension added. It splits the string in three groups: everything up to the last slash, then the file name, then the ".pdf". The '$1' returns the group 1 (groups start with 0). Group 2 would be the ".pdf".
SELECT REGEXP_REPLACE('http://fobar.com/one/two/abc.pdf','(?:.+\/)(.+)(.pdf)','$1' ,1,1)
FROM sysibm.sysdummy1
abc
You could apply LENGTH and SUBSTR to extract the relevant part or try to build that into the regex.
For older Db2 versions than 11.1. Not sure if it works for 9.5, but definitely should work since 9.7.
Try this as is.
with cas_fnd_dwd_det (casi_imp_urls) as (values
'www.casiac.net/fnds/CASI/qnxp.pdf'
, 'www.casiac.net/fnds/casi/as.pdf'
, 'www.casiac.net/fnds/casi/vindq.pdf'
, 'www.casiac.net/fnds/CASI/mnip.PDF'
)
select
casi_imp_urls
, xmlcast(xmlquery('fn:replace($s, ".*/(.*)\.pdf", "$1", "i")' passing casi_imp_urls as "s") as varchar(50)) cas_code
from cas_fnd_dwd_det

Regex Extract All using pig

This is my sample data (attributes) to match with:
[87027^适用年龄#619081^12-36个月,108389^国产/进口#619192^国产,108376^包装单位#619113^盒装,12210^分类#121491^牛奶粉,108385^奶源产地#619164^澳洲/新西兰,115919^配方#651827^常规配方奶粉,12212^段位#121499^3段,108380^净含量#619152^2kg以上]
[108385^奶源产地#619183^其它 ,12212^段位#121499^3段,87027^适用年龄#619081^12-36个月,108376^包装单位#619120^桶装,108389^国产/进口#619196^进口,12210^分类#121491^牛奶粉,115919^配方#651827^常规配方奶粉,12241^价格#121803^200-299元,108380^净含量#619147^800-1000g]
[87027^适用年龄#619081^12-36个月,108389^国产/进口#619192^国产,108376^包装单位#619113^盒装,12210^分类#121491^牛奶粉,108385^奶源产地#619164^澳洲/新西兰,115919^配方#651827^常规配方奶粉,12212^段位#121499^3段,108380^净含量#619152^2kg以上]
So I'm trying to match with all the values in between the numbers. So for the first data line, I would want to match with the value between 87027 and 619081, and the value between 619081 and 108389 and so on for every value.
Here is my code so far:
data = LOAD 'SHORT.txt' USING PigStorage() AS (number:chararray, user:chararray, item:chararray, attributes:chararray);
B = FOREACH data GENERATE REGEX_EXTRACT_ALL (attributes, '\\^(.*?)[#|,|\\]]');
DUMP B;
Please let me know if you there is any other information needed. Thanks!
This pattern captures what you describe:
\d+?(\^.+?[,#\]])
Example here: https://regex101.com/r/pOPWwY/2
Looks like Hadoop needs double-escaping of backslashes, so bear that in mind when testing the above.
If want to exclude the markers , # ], then:
\d+?(\^.+?)[,#\]]

Postgresql - How do I extract the first occurence of a substring in a string using a regular expression pattern?

I am trying to extract a substring from a text column using a regular expression, but in some cases, there are multiple instances of that substring in the string.
In those cases, I am finding that the query does not return the first occurrence of the substring. Does anyone know what I am doing wrong?
For example:
If I have this data:
create table data1
(full_text text, name text);
insert into data1 (full_text)
values ('I 56, donkey, moon, I 92')
I am using
UPDATE data1
SET name = substring(full_text from '%#"I ([0-9]{1,3})#"%' for '#')
and I want to get 'I 56' not 'I 92'
You can use regexp_matches() instead:
update data1
set full_text = (regexp_matches(full_text, 'I [0-9]{1,3}'))[1];
As no additional flag is passed, regexp_matches() only returns the first match - but it returns an array so you need to pick the first (and only) element from the result (that's the [1] part)
It is probably a good idea to limit the update to only rows that would match the regex in the first place:
update data1
set full_text = (regexp_matches(full_text, 'I [0-9]{1,3}'))[1]
where full_text ~ 'I [0-9]{1,3}'
Try the following expression. It will return the first occurrence:
SUBSTRING(full_text, 'I [0-9]{1,3}')
You can use regexp_match() In PostgreSQL 10+
select regexp_match('I 56, donkey, moon, I 92', 'I [0-9]{1,3}');
Quote from documentation:
In most cases regexp_matches() should be used with the g flag, since
if you only want the first match, it's easier and more efficient to
use regexp_match(). However, regexp_match() only exists in PostgreSQL
version 10 and up. When working in older versions, a common trick is
to place a regexp_matches() call in a sub-select...