The SQL NULL is the term used to represent a missing value. A NULL value in a table is a value in a field that appears to be blank. A field with a NULL value is a field with no value. It is very important to understand that a NULL value is different than a zero value or a field that contains spaces.
spot under tongue pierce. Secondly, tongue piercing is another cause of dark spots on tongue and lips. After the tongue piercing has healed, a dark spot is left on the tongue. The piercing also can lead to dark spot on tongue symptoms because the practice promotes fungal infections. More so, at pierce point, normal tongue pigmentation is lost.
Blister on tip of the tongue. What causes blisters on the tip of your tongue? This condition is commonly caused by injuries. There are also some other conditions like infections that can cause this condition. The blisters can be small, big, multiple or clustered. White bumps and spots begin to show when the condition begins to heal.