QSELECT

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19 years 3 months ago #2103 by askandha
QSELECT was created by askandha
Inorder to select ids from a concat file QSELECT can be used. It can also be used to retrieve any field value from a file.

EG:

>QSELECT FBNK.CATEG.ENT.LWORK.DAY *

This will return all the CATEG.ENTRY ids from CATEG.ENT.LWORK.DAY
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Kandha

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19 years 3 months ago #2104 by malai
Replied by malai on topic QSELECT
Usage of EVAL in SELECT statment.

In SELECT statment expressions can be evaluated by using EVAL function.

Here is a small example, that selects only the decimal part of WORKING.BALANCE in the file FBNK.ACCOUNT.

-->SELECT FBNK.ACCOUNT EVAL 'FIELD(WORKING.BALANCE,'.',1)'
>SAVE.LIST MYLIST

-->CT &SAVEDLISTS& MYLIST
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19 years 3 months ago #2105 by ironmaiden
Replied by ironmaiden on topic QSELECT
I personally feel these EVAL are going to cause a lot of performance issues... Also I heard there is something called NSELECT. I will find out more on this NSELECT and let u guys know the same.

Best Regards,
Karthik Sekar
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19 years 3 months ago #2106 by malai
Replied by malai on topic QSELECT
Hey Hey...

No need to do any R&D on NSELECT.

Its already discovered under the topic 'use of NSELECT'

I agree, for huge select EVAL will cause performance issue.
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