topic Re: WildMatch(Peek()) in App Development

WildMatch(Peek())

07mishin — Wed, 01 Dec 2021 16:32:59 GMT

Good evening. Please, help me.

My code:

///////////////////////////////////////////////////////////////////////////////////////////////////////////////////

[data]:
Load * Inline [
INDEX_EXCEL_TABLE, City, postalAddress
111, 'A', 111
222, 'B', 222
333, 'A', 333
];

[New data]:
load *,
if(WildMatch(postalAddress, Peek(INDEX_EXCEL_TABLE, 1, 'data'))=1, City) as New_City
Resident [data];

Drop Table [data];
Exit Script;

///////////////////////////////////////////////////////////////////////////////////////////////////////////////////

My result in data-model:

INDEX_EXCEL_TABLE	City	postalAddress	New_City
111	A	111	-
222	B	222	B
333	A	333	-

But I need all values in New_City.

Thanks!!!

Re: WildMatch(Peek())

Or — Wed, 01 Dec 2021 17:22:43 GMT

Peek(INDEX_EXCEL_TABLE, 1, 'data') means "Check the value of INDEX_EXCEL_TABLE in the second line of the 'data' table", so you're always comparing that value (which is 222) to PostalAddress, and as a result, it's only evaluating to true in the second line. Since I don't understand what you're trying to do here, though, I can't suggest as to how you might fix it. Typically you would use RowNo() or RecNo() in a Peek statement if you're looking for the next line in the table.

Re: WildMatch(Peek())

07mishin — Wed, 01 Dec 2021 18:22:45 GMT

Thank you. I'll try to explain 🙂 I have 2 tables. One table is a directory. The second table is a table of values.

First:

INDEX	City
111	'NY'
222	'RUS'

Second:

postalAddress

aaa111bbb

aaa222bbb

I need to look for a substring [INDEX] in a row [postalAddress], if a substring is found, then insert a value [City] in a new column in Second table.

Re: WildMatch(Peek())

Or — Wed, 01 Dec 2021 18:31:33 GMT

If there's some sort of fixed way to get the index through text functions - in the example, you could use Mid(postalAddress,4,3) or KeepChar(postalAddress,'1234567890') - I would recommend using that approach for simplicity.

If you absolutely need to combine a mapping load with a partial string match, have a look at https://qlikviewcookbook.com/recipes/download-info/mapping-with-wildcards/ , https://community.qlik.com/t5/QlikView-App-Dev/Mapping-with-a-table-using-wildcards/td-p/1511935 , or any number of threads related to mapping with wildcards.