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chucknb28409
Frequent Visitor

Using Regular Expressions in Power Automate Desktop - I am getting a syntax error when using Parse Text

I am trying to extract one or two names from a text string. The string can be a single name or two names with variations listed below. I used regex101.com to generate and test the regx, I am assigning variable names to each portion of the regular expression, so I repeat the Parse text command for each variable to extract.  I have six Parse Text commands to grab all the data from the string. Here is the regx and sample data. I get a syntax error when I use the generated regx. I removed the '^' and the '$' but I still get the error. The first and second middle Initial are optional, and there may not be a second name.

 

Regx: 

^(?<LAST_NAME>[\w]+)\s(?<FIRST_NAME>[\w]+)(\s?(?<MID_INITIAL>[\w]+)([%+]((?<LAST_NAME2>[\w]+)\s)?(?<FIRST_NAME2>[\w]+)\s(?<MID_INITIAL2>[\w]+))?)?$

 

Sample Data:

LAST_NAME FIRST_NAME MID_INITIAL

LAST_NAME FIRST_NAME MID_INITIAL+FIRST_NAME2 MID_INITIAL2

LAST_NAME FIRST_NAME MID_INITIAL%FIRST_NAME2 MID_INITIAL2

LAST_NAME FIRST_NAME MID_INITIAL+LAST_NAME2 FIRST_NAME2 MID_INITIAL2

LAST_NAME FIRST_NAME MID_INITIAL%LAST_NAME2 FIRST_NAME2 MID_INITIAL2

LAST_NAME FIRST_NAME

LAST_NAME FIRST_NAME+FIRST_NAME2 MID_INITIAL2

LAST_NAME FIRST_NAME%FIRST_NAME2 MID_INITIAL2

LAST_NAME FIRST_NAME+LAST_NAME2 FIRST_NAME2 MID_INITIAL2

LAST_NAME FIRST_NAME%LAST_NAME2 FIRST_NAME2 MID_INITIAL2

3 ACCEPTED SOLUTIONS

Accepted Solutions

Hi @chucknb28409 

 

Still, there is a single % it should be rectified with %%

 

Srini84_0-1697631485908.png

 

If you find this reply helpful, please consider giving it a LIKE AND

If this reply answers your question or solves your issue, please ACCEPT AS SOLUTION

 

Thanks,

Srini

View solution in original post

Agnius
Most Valuable Professional
Most Valuable Professional

The specific flavor of Regex that PAD uses is not exactly the same as that in regex101. I would recommend using http://regexstorm.net/tester instead. It works in 100% cases.

 

Also, you have not actually done what I suggested. Please just make sure that you put in double percentage symbols instead of a single percentage symbol - i.e. do %% instead of %.

This will clearly not work on any regex tester, because they don't use % as an escaping character, but PAD does - this is because % is a reserved character in PAD for variable notation, and it can never be used as a single %.

-------------------------------------------------------------------------
If I have answered your question, please mark it as the preferred solution. If you like my response, please give it a Thumbs Up.

I also provide paid consultancy and development services using Power Automate. If you're interested, DM me and we can discuss it.

-------------------------------------------------------------------------------------------------------------------------
If I have answered your question, please mark it as the preferred solution. If you like my response, please give it a Thumbs Up.
Regards, Agnius Bartninkas

View solution in original post

Agnius
Most Valuable Professional
Most Valuable Professional

This is not related to regex in any way. It is a thing specific to PAD, because, as we have mentioned it is used for variable notation in PAD. When you escape it with another %, that's what it looks like.

-------------------------------------------------------------------------
If I have answered your question, please mark it as the preferred solution. If you like my response, please give it a Thumbs Up.

I also provide paid consultancy and development services using Power Automate. If you're interested, DM me and we can discuss it.

-------------------------------------------------------------------------------------------------------------------------
If I have answered your question, please mark it as the preferred solution. If you like my response, please give it a Thumbs Up.
Regards, Agnius Bartninkas

View solution in original post

9 REPLIES 9
Agnius
Most Valuable Professional
Most Valuable Professional

The syntax error is caused by the percentage symbol, because PAD reserves that for variable notation.

If you want to pass a literal % into the string, you need to escape it with another %. Try this:

^(?<LAST_NAME>[\w]+)\s(?<FIRST_NAME>[\w]+)(\s?(?<MID_INITIAL>[\w]+)([%%+]((?<LAST_NAME2>[\w]+)\s)?(?<FIRST_NAME2>[\w]+)\s(?<MID_INITIAL2>[\w]+))?)?$

-------------------------------------------------------------------------
If I have answered your question, please mark it as the preferred solution. If you like my response, please give it a Thumbs Up.

I also provide paid consultancy and development services using Power Automate. If you're interested, DM me and we can discuss it.

-------------------------------------------------------------------------------------------------------------------------
If I have answered your question, please mark it as the preferred solution. If you like my response, please give it a Thumbs Up.
Regards, Agnius Bartninkas
Srini007
Super User
Super User

Hi @chucknb28409 

 

As @Agnius said you have %, which is treated as an end/start of a variable, for example in Regex we will use escape character  like \%, like this we need to give "%%"(Double %)  in PAD

 

If you find this reply helpful, please consider giving it a LIKE AND

If this reply answers your question or solves your issue, please ACCEPT AS SOLUTION

 

Thanks,

Srini

Hi Angnius,

I am not sure what happened when I posted (I didn't check the insert) but here is what is actually on regx101.com and in Power Automate. For some reason it doubled the back slashes and I didn't catch it...

Thanks

Hi Agnius,

Okay I corrected it but I still get a syntax error. See attachment.

Thanks

Hi @chucknb28409 

 

Still, there is a single % it should be rectified with %%

 

Srini84_0-1697631485908.png

 

If you find this reply helpful, please consider giving it a LIKE AND

If this reply answers your question or solves your issue, please ACCEPT AS SOLUTION

 

Thanks,

Srini

Agnius
Most Valuable Professional
Most Valuable Professional

The specific flavor of Regex that PAD uses is not exactly the same as that in regex101. I would recommend using http://regexstorm.net/tester instead. It works in 100% cases.

 

Also, you have not actually done what I suggested. Please just make sure that you put in double percentage symbols instead of a single percentage symbol - i.e. do %% instead of %.

This will clearly not work on any regex tester, because they don't use % as an escaping character, but PAD does - this is because % is a reserved character in PAD for variable notation, and it can never be used as a single %.

-------------------------------------------------------------------------
If I have answered your question, please mark it as the preferred solution. If you like my response, please give it a Thumbs Up.

I also provide paid consultancy and development services using Power Automate. If you're interested, DM me and we can discuss it.

-------------------------------------------------------------------------------------------------------------------------
If I have answered your question, please mark it as the preferred solution. If you like my response, please give it a Thumbs Up.
Regards, Agnius Bartninkas

Hi Agnius,

I did what you suggested and the syntax error went away, what I don't understand is why. When you want to examine a range of characters don't you put them in brackets? I have two options there is either a plus (+) or a percentage (%) separator between multiple names. When I did the double percentage (%%) it took that and changed the input to ("%"+) inside of square brackets in Power Automate. Is this something unique to dot Net? Also regx101.com has an option for dot Net as the language flavor and it doesn't show the change. In regexstorm.net I can't get it to work at all so I will have to play with it. I am wondering if regexstorm.net is having issues with the variable assignment?

Thanks

Agnius
Most Valuable Professional
Most Valuable Professional

This is not related to regex in any way. It is a thing specific to PAD, because, as we have mentioned it is used for variable notation in PAD. When you escape it with another %, that's what it looks like.

-------------------------------------------------------------------------
If I have answered your question, please mark it as the preferred solution. If you like my response, please give it a Thumbs Up.

I also provide paid consultancy and development services using Power Automate. If you're interested, DM me and we can discuss it.

-------------------------------------------------------------------------------------------------------------------------
If I have answered your question, please mark it as the preferred solution. If you like my response, please give it a Thumbs Up.
Regards, Agnius Bartninkas
Anonymous
Not applicable

You can handle this type of exception by adding two extra percent signs. exp %'%'%

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