Re: How simulate a logical 'OR' and 'AND in T-SQL?

No, I don't think you are correct.

T-SQL does support logical operators. Consider:

IF (1 = 1) AND (2 > 1)

begin

     print "Both are TRUE"

end

IF (1 = 1) OR (1 > 2)

begin

     print "One of them is TRUE"

end

See "and and or"

Enjoy!