how to update data when selecting

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There is a table named DTable, new data is flushing into it every 10mins. I want to select some data and flag the newly selected data so that they cannot be selected from then on. I used to select the records first, then flag them. But this approach is not perfect. Can I use one query to achieve that goal?

asked 39 secs ago

zxp

43

how to update data when selecting