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      Question

      In SQL, the ROWS BETWEEN UNBOUNDED PRECEDING AND CURRENT

      ROW clause applies to:
      A Recursive joins Correct Answer Incorrect Answer
      B Window functions with frames Correct Answer Incorrect Answer
      C Partitioned indexes Correct Answer Incorrect Answer
      D Transaction isolation Correct Answer Incorrect Answer
      E Optimizer hints Correct Answer Incorrect Answer

      Solution

      This defines a moving window of rows for calculations like running totals.

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