Using search keyword or where keyword

[nirmalya2006]

Hi All

I have data in the below fomat

Country={UK}, Question=Where do you live, Answer=London 
Country={USA}, Question=Where do you live, Answer=New York 
Country={UK}, Question=What is you pet, Answer=dog 
Country={USA}, Question=What is you pet, Answer=cat

... and so on

I have a drop down in my dashboard that selects the market.
I have a static option 'All' with value as *.
But using the * my below query breaks.

| index=myindex
| where Country="{"."$country$"."}"
| table Country, Question, Answer

When I select any specific country it works, but it breaks when I select the All option
I found by trial and error that I have to use search keyword instead of where when it comes to use asterisk *.
But search key word doesn't go with the expression that I am using, so I have to use where.

I am confused as to which keyword to use or is there any other way I can do it.
Can someone help with some guidance.

Thanks

[HiroshiSatoh]

I think that I should use the search command.

| search Country="{$country$}"

$country$=*,UK,USA