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From: A. Sasaki <asasaki@gmail.com>
To: Mark Williams <markwillimas@gmail.com>
Cc: pgsql-sql@lists.postgresql.org
Subject: Re: Regular Expressions
Date: Sun, 4 Nov 2018 12:44:43 -1000
Message-ID: <CB79CC06-10A5-4B6C-9AB7-1314F0A861F3@gmail.com> (raw)
In-Reply-To: <013401d47476$a7acf540$f706dfc0$@gmail.com>
References: <012401d47472$0ebc9240$2c35b6c0$@gmail.com>
	<C8728C46-2154-4AF8-9E78-8085D49E5CE0@gmail.com>
	<013401d47476$a7acf540$f706dfc0$@gmail.com>

I didn’t test it in a DB, sorry ’bout that.

I think others are on the right track here, using SQL for the AND functionality:

‘Select *
FROM [TABLE]
WHERE [regex search 1]
AND [regex search 2]
AND [regex search 3]
....’


Thanks,

-Andrew-

> On Nov 4, 2018, at 9:43 AM, Mark Williams <markwillimas@gmail.com> wrote:
> 
> Hi Andrew,
>  
> Thanks for the reply.
>  
> I tried the query, but it produced an error “invalid regular expression: quantifier operand invalid”.
>  
> Also, what would be the regular expression if you want to check whether all the words were in the field where you had say 10 words/phrases you wanted to check for?
>  
>  
> __
>  
> From: A. Sasaki <asasaki@gmail.com> 
> Sent: 04 November 2018 19:30
> To: Mark Williams <markwillimas@gmail.com>
> Subject: Re: Regular Expressions
>  
> ‘(*\mtext1\M*\mtext2\M)|(*\mtext2\M*\mtext1\M)’
> 
> Thanks,
>  
> -Andrew-
> 
> On Nov 4, 2018, at 9:10 AM, Mark Williams <markwillimas@gmail.com> wrote:
> 
> If I wanted to search for whole words in a field I would use something like:
>  
> Select * from mytable where myfield ~* ‘(\mtext1\M) | (\mtext2\M)’
>  
> This would find all instances of myfield containing either “text1” or “text2”.
>  
> I can’t figure out how to search myfield for all instances which contain “text1” AND “text2”.
>  
> In other words | is the OR operator. What is the AND operator. Tried + and whilst that executes, it doesn’t return matching fields.
>  
> Thanks
>  
> Mark
>  
> __
>  

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