SQL Server inner join to that query again inner join again the same -


we working mlm project. basic idea of project like

  • a has been introduced
  • b has been introduced a
  • c has been introduced b
  • d has been introduced c

my sql server table structure like

user_details

https://i.stack.imgur.com/xchgd.jpg

now theoretically

a's team members => b , c , d       b's team members => c , d      c's team member => d     d's team member => null (he doesn't have team members yet)

using sql query, how can find team members of 'a'?

you can use recursive select statement follows:-

declare @leadname char(1) = 'a';  team (      select id, f_name, l_name, introduced_by mlm       f_name = @leadname      union      select m.id, m.f_name, m.l_name, m.introduced_by mlm m           join team t on m.introduced_by = t.id ) select * team f_name <> @leadname;

here variable @leadname f_name of desired root ('a' in case).


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