If either string is of datatype VARCHAR2, the result has datatype VARCHAR2 and is limited to 4000 characters. Trailing blanks in character strings are preserved by concatenation, regardless of the strings' datatypes. On most platforms, the concatenation operator is two solid vertical bars, as shown in Table 3-3. However, some IBM platforms use broken vertical bars for this operator.
George Marks/Retrofile/Getty Images. If a thunderstorm is rolling in, your chances of being struck by lightning are one in 600,000, but this risk is elevated if you take a shower or bath, wash laundry or dishes, or even clean your hands in the sink during the storm.
1 Swimming in a light rain shower should be fine, but if you see or hear a storm approaching, get out of the water immediately. This rule is to be followed regardless of how well you can swim.  Don't swim in water that's too cold. Moving your limbs to paddle can become suddenly difficult if you're in frigid water.