topic Comparing string parts - PEEK/PREVIOUS functions in QlikView

Comparing string parts - PEEK/PREVIOUS functions

Thu, 27 Jan 2011 16:34:55 GMT

Greetings everyone!

I have the a problem scenario at hands, and I can't put it together as a solution using AQL...

Here it is:

I must read a string part from a field , store it in a variable (or something), and then compare it with other records of the same field, over and over in a loop (FOR... or WHILE... statements), till the end of the table.

I tried using PEEK and PREVIOUS functions together to perform it, but unsuccesfully.

Any ideas how this can be done?

In advance, I'm sorry if the explanation is kinda messy, but I can't find a better way to put it down in this first moment.

Thanx again!!!

Comparing string parts - PEEK/PREVIOUS functions

Thu, 27 Jan 2011 20:31:00 GMT

Anybody???

Comparing string parts - PEEK/PREVIOUS functions

hector — Thu, 27 Jan 2011 20:44:57 GMT

i'm not following, do you have an example of the input data and the expected result??

Rgds

Comparing string parts - PEEK/PREVIOUS functions

Thu, 27 Jan 2011 20:59:39 GMT

I want to verify if a portion of a string matches total or partialy the subsequent string to be compared...

CUSTOMER_NAME
________________

Sadia SA
Sadia S.A
Sadia S/A
Sadia S A

.
.
.

Observing the composition of the strings, they are different matches. But for the business, they are all the same (once I have no access to the source of the information, to treat them all in order to have no such results).

My idea: Read 6 or 8 characters of each string, compare it with all the other records of the same field, in order to retrieve all relevant data.

I first thought about creating a variable that would store the string to be found in the search, but i could not do that...

My nearest strike was that expression:

Table1:
LEFT(CUSTOMER_NAME,6) AS CUSTOMER_NAME_VAR1
FROM table1;

Table2:
IF(WILDMATCH(CUSTOMER_NAME,CUSTOMER_NAME_VAR1 & '*' ) = 1, CUSTOMER_NAME) AS CUSTOMER_NAME,
FROM table1;

DROP TABLE table1;

I hope it helps to explain the situation.

THX!!!

Comparing string parts - PEEK/PREVIOUS functions

hector — Thu, 27 Jan 2011 22:14:17 GMT

there is an option change the value of this field? maybe with purgechar() and upper

upper(Purgechar(field,'./&$'))

so this will return 'SADIA SA' for every row

is this helpful?

Rgds