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.
Median rhomboid glossitis is a condition that can affect your tongue if you have oral thrush. It causes a red, smooth patch or lump to develop in the middle of the top part of your tongue, which can be sore. You're more likely to develop oral thrush if you: have recently taken antibiotics.
White coating on tongue due to Oral Thrush is caused because of an increase in the growth of Candida Albicans, a form of fungus naturally present in various parts of the body. Under normal circumstances, certain good bacteria help to maintain a balance in the growth of these micro organisms.