SELECT: too many nested operators

All,

I have a valid scenario where our application generates a SQL which is around 4.4MB and contains 75K of combination of AND and OR operators. This SQL fails with "SELECT: too many nested operators" error while executing this SQL.

While I went through the code, I noticed any thread size above THREAD_STACK_SIZE - 16 * 1024 is getting aborted. Is there any possibility that we can change this? Any reason why it's set to 16MB? As server our server has enough memory and storage and we need to understand if this can be handled in code or via parameter as this is valid scenario. Also, we can't split the SQL too.

Regards, Sreejith