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Checks to see if the arguments in Column1 are less than or equal to the arguments in Column2. Both columns must contain the same data type. LE then returns a Boolean value, either true if the arguments in Column1 are less than or equal to the arguments in Column2 or false if the arguments in Column1 are not less than or equal to the arguments in Column2. If one of the arguments is null, that value is lesser than other values, unless all arguments are null.
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