Comments on: MySQL: Query Real Values from Delimiter-Separated-String-IDs

By: Chaoz

Chaoz — Sat, 22 Oct 2011 15:48:14 +0000

no probs

By: Vishal

Vishal — Sat, 22 Oct 2011 13:16:30 +0000

HI,

Thanks for the code.

By: Chaoz

Chaoz — Fri, 08 Jul 2011 13:59:34 +0000

Hi,

Can you explain further with FULL TABLE SCAN?
This is the first time I encountered this.

Thanks

By: aidar

aidar — Fri, 08 Jul 2011 13:50:33 +0000

Hi
The

SELECT value FROM my_table WHERE FIND_IN_SET(my_id, ′1, 2, 3′);

is not the same as

SELECT value FROM my_table WHERE my_id IN (’1′, ′2′, ′3′)

In first quiry FULL TABLE SCAN is required. This is not a solution for big tables

By: Chaoz

Chaoz — Tue, 17 Nov 2009 04:56:12 +0000

yup that will do if not used in a query, but what I needed was the ’1, 2, 3′ to be used as part of a query

By: yk

yk — Mon, 16 Nov 2009 22:13:37 +0000

The following code works for me:

SELECT value FROM my_table WHERE FIND_IN_SET(my_id, ′1, 2, 3′);

which is similar to the following code:

SELECT value FROM my_table WHERE my_id IN (’1′, ′2′, ′3′)

By: Chaoz

Chaoz — Thu, 02 Jul 2009 05:10:55 +0000

thanks for the tip!
I might check into that this weekend. =)

By: Carlos Devia

Carlos Devia — Wed, 01 Jul 2009 17:51:24 +0000

You should look at the function:
FIND_IN_SET

It could reduce the code needed.

Regards

By: Jordan

Jordan — Thu, 18 Jun 2009 08:47:42 +0000

Thanks Chaoz. I’m working with a MySQL procedure now that creates a temp table and it seems to be working as much as I should expect. The real problem here is I don’t have a scripting language. It’s a project at work, and we have fairly substandard systems; it’s been a chore and a half just getting this to work with Excel and MS Query. I think I’ll have to go with a full php implementation, but I’d rather not spend that much time on a company project (because I’m a security guard for now). Thank you again.

By: Chaoz

Chaoz — Tue, 16 Jun 2009 09:53:45 +0000

hi Jordan,

you cannot use the returned values as a resultset, its still a string but instead of the numbers separated by “-”, is now converted to your PhysicalZone names.

so example:

having ’001-002-003′ as your input…

splitAndTranslate(’001-002-003′,’-’)

will return it into

’PhysicalZone1-PhysicalZone2-PhysicalZone3′

so its still a string.

What you want can be done via mysql Procedure, currently mysql Function does not do this.

Another way for you I can suggest is to get the PhysicalZone by using the function, split it by using your scripting language, (ex. php has ‘explode’ function) then populate your IN statement, then execute the query.

thanks