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From: Mark Williams <markwillimas@gmail.com>
To: 'A. Sasaki' <asasaki@gmail.com>
Cc: pgsql-sql@lists.postgresql.org
Subject: RE: Regular Expressions
Date: Sun, 4 Nov 2018 19:43:26 -0000
Message-ID: <013401d47476$a7acf540$f706dfc0$@gmail.com> (raw)
In-Reply-To: <C8728C46-2154-4AF8-9E78-8085D49E5CE0@gmail.com>
References: <012401d47472$0ebc9240$2c35b6c0$@gmail.com>
	<C8728C46-2154-4AF8-9E78-8085D49E5CE0@gmail.com>

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 <mailto: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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