Forums

Please write a review for the extension you are using on the Joomla extensions directory before posting a new question as we are being spammed by many negative reviews.

Thank you for your support!

How to select DISTINCT(CONCAT(??? in the 'fields to retrieve' section

NickOg 03 Dec, 2018

Hi

I want to use

DISTINCT(CONCAT(mdlPublishedTerms.intYear,mdlPublishedTerms.txtTerm)):mdlPublishedTerms.publishedTerm

in a db read 'Fields to retrieve' section.

Or better still in select only records where CONCAT(mdlPublishedTerms.intYear,mdlPublishedTerms.txtTerm) is distinct

Any suggestions gratefully received.

Regards

Nick

healyhatman 03 Dec, 2018

Answer

Spaces between the elements.

DISTINCT( CONCAT( mdlPublishedTerms.intYear , mdlPublishedTerms.txtTerm)):mdlPublishedTerms.publishedTerm

NickOg 03 Dec, 2018

Ye gods! That easy! Many thanks. My question is - how did you know that? Is there some general rule that I am missing??

Regards

Nick

healyhatman 03 Dec, 2018

from a glance at a forum post a year ago.

NickOg 07 Dec, 2018

Pushing a bit further - how can I set up WHERE to seelct records with the same id as a previous read??

mdlConvenersInfo.id/IN: ( {var:read_data96.mdlConveners})

That mdlConveners looks like this

[array] 0

[array] mdlConveners undefined

[string] user_id = "587" undefined

[array] 1

[array] mdlConveners undefined

[string] user_id = "600" undefined

[array] 2

[array] mdlConveners undefined

[string] user_id = "605"

I have a feeling that mdlConveners is wrong for the purpose.

Regards

Nick

healyhatman 07 Dec, 2018

mdlConvenersInfo.id/IN:{var:read_data96.model.field}

Should do it

This topic is locked and no more replies can be posted.

2Checkout.com

2CheckOut.com Inc. (Ohio, USA) is an authorized retailer for goods and services provided by ChronoEngine.com