# Quiz

+ Which of the following items can we set when collecting statistics for a table or index? (Select 2)
  + `A` . Stop automatically collecting statistical information when the table itself is under high reads and writes pressure
  + `B` . The number of samples sampled for a table when collecting statistical information
  + `C` . Whether to modify the execution plan of the executing SQL statement when collecting statistics
  + `D` . Maximum number of buckets in a column histogram
  + `E` . Stop collecting statistics when the CPU load reaches a threshold value and reduce the load

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B, D