DevDB (4/12/2013)
Use Batch insert/update/ delete instead of doing it in one big batch.
The OP is batching.
For fast, accurate and documented assistance in answering your questions, please read this article.
Understanding and using APPLY, (I) and (II) Paul White
Hidden RBAR: Triangular Joins / The "Numbers" or "Tally" Table: What it is and how it replaces a loop Jeff Moden