split comma seprate value from table in sql server

Question

i have one SQL table in which many records, i want to know how many names are in it and how much time one name in it.

Table NameMst

Name

jo         


        

Answer 1

You can extract the names using a recursive CTE and some string parsing. The rest is just aggregation:

with cte as (
      select (case when names like '%,%'
                   then left(names, charindex(',', names) - 1)
                   else names
              end) as name,
             (case when names like '%,%'
                   then substring(names, charindex(',', names) + 1, len(names))
              end) as names
      from names
      union all
      select (case when names like '%,%'
                   then left(names, charindex(',', names) - 1)
                   else names
              end) as name,
             (case when names like '%,%'
                   then substring(names, charindex(',', names) + 1, len(names))
              end)
      from cte
      where names is not null
     )
select name, count(*)
from cte
group by name;

As you have probably figured out, storing comma delimited lists in SQL Server is a bad idea. You should have an association/junction table with one row per name (and other columns describing the list it is in).