>= (Greater Than or Equal To) (Transact-SQL)
Compares two expressions for greater than or equal (a comparison operator).
expression > = expression
When you compare nonnull expressions, the result is TRUE if the left operand has a greater or equal value than the right operand; otherwise, the result is FALSE.
Unlike the = (equality) comparison operator, the result of the >= comparison of two NULL values does not depend on the ANSI_NULLS setting.