Determines the average of a group of values. If the operand is not a DECIMAL, then AVG returns an 8-byte FLOAT. If the operand is a DECIMAL, AVG returns a 10-byte DECIMAL.
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Determines the sum of a group of values. If the operand is not a DECIMAL, then SUM returns an 8-byte FLOAT. If the operand is a DECIMAL, SUM returns a 10-byte DECIMAL.
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