User:LainieH/test page

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sasCommunity Tip of the Day

In a DATA step, a logical expression like:

  x < y < z < a

is evaluated as in math. i.e., it is equivalent to:

  x < y and y < z and z < a

In macros, i.e., within %eval() or %sysevalf(), the comparison operators are left-associative. i.e., the above is equivalent to:

  ((x < y) < z) < a
Submitted By chang_y_chung

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