sql - Can you run a portion of a script in parallel, based off the results of a select statement? -

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i have portion of code which, when simplified, looks this:

select @mainlooptableid = min(uid)     queueofids (nolock) while (@mainlooptableid not null) begin     -- large block of code several things depending on nature of @mainlooptableid     -- .     -- .     -- .     -- end of blocks main logic     delete queueofids uid = @mainlooptableid     select @mainlooptableid = min(uid)         queueofids (nolock) end

i able run segment of code that's inside while loop parallel uids inside queueofids table. based on happens inside loop i can guarantee not interfere each other in way if run concurrently, logically seems safe run this. real question if there way sql run portion of code values in there?

note: did think generating temp table series of created sql statements stored strings, each 1 identical except @mainlooptableid value. if have table of sql statements ready execute, i'm not sure how of these statements execute concurrently.

i can't think of way within single sql script; scripts procedural. if want explore idea, you'd need involve form of multi-threaded application handle looping aspect, , open thread hand off parallelized portion of current script. not impossible, introduce complexity.

if want in sql, you'll have rewrite code eliminate loop. noted in comments above, sql server set-based, means handles amount of parallelization doing work "all @ once" against set.


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