Qlik Sense encapsulates all values passed as selections from the summarized application into some special variables. Those variables have a special name and content, and they are usually referred to as binding variables.

Let's assume you've made some selections (Central Partk S & 6th Ave and West St & Chambers St) in the start_station_name field. Qlik will encapsulate all values into a variable called ods_start_station_name. The ods prefix means on-demand selected values. There are other prefixes that we can choose, based on which information we need to retrieve:

Usually, if we want to create SQL using a value passed in as the selected value of start_station_name, we can write the following code:

SELECT * 
FROM 'bigquery-public-data.new_york.citibike_trips' 
WHERE  
start_station_name into ($(odso_start_station_name){"quote": "'", "delimiter": "."})

Qlik Sense will parse your variable and consider an example where the user has selected the Central Park S & 6 Ave and West St & Chambers St values. The SQL will be rewritten as follows:

SELECT * 
FROM 'bigquery-public-data.new_york.citibike_trips' 
WHERE  
start_station_name into ('Central Partk S & 6 Ave', 'West St & Chambers St')

Here, the quote parameter represents how values should be surrounded and the delimiter refers to how values have to be split.