How to write a foreach in SQL Server?

Question

I am trying to achieve something along the lines of a for-each, where I would like to take the Ids of a returned select statement and use each of them.

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Answer 1

The following line is wrong in your version:

WHILE (@i <= (SELECT MAX(idx) FROM @Practitioner))

(Missing the @)

Might be an idea to change your naming convention so that the tables are more different.