作者: Vivek Narasayya , Surajit Chaudhuri , Ravishankar Ramamurthy
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摘要: A query progress indicator that provides an indication to a user of the being executed on database. The allows decide whether should be allowed complete or aborted. One method may used estimate is database defines model work performed during execution query. total amount will estimated according model. at given point using in time and work. This provided user.