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Can’t figure this one out… when I execute a select query it shows an explain plan cost of ~4500 and takes ~3 seconds to return. When I wrap that query (no changes) inside of:
select count(*) from (
/*query here*/
)
It times out. It’s at 5 minutes and counting now.
I tried this in SQL Developer and Aqua Data Studio — same results.
When doing
COUNT(*), the optimizer changes its goal toALL_ROWSwhich may affect the plan severely.Could you please post your query here?