How to find the distinct count of the below listed result from the table?

SivaPK
New Contributor II

Hi,

How to get the distinct count from the below listed image,

keywords = column name

table = appCatalog

keywords (column)

"[""data"",""cis"",""mining"",""financial"",""pso"",""value""]"
"[""bzo"",""employee news"",""news""]"
"[""core.store"",""fbi""]"
"[""data"",""display"",""support""]"
"[""bTravel"",""bTravel Expense"",""non-travel-related expenses"",""travel expenses""]"

For me output should be like, 17 as result. While counting the distinct values it should result 17.

keyword name called  'data' is occurring 2 times in the result as shown above  Row 1 and Row 4.

How to achieve the result?

Thanks in advance.