The function requires no arguments. In distributed SQL statements, this function returns the date and time set for the operating system of your local database. You cannot use this function in the condition of a CHECK constraint.
Following are some potential causes of mucus in a dog's stool: 1  Colitis. 2  Stress. 3  Dietary indiscretion.  Food 1  intolerances. Recent diet changes.  Presence of parasites/ 1 protozoans. Overgrowth of bacteria.  Foreign 1  objects. Imbalance of colon bacteria (the good  kind) Polyps and tumors of the 1  intestinal lining. Intoxication.
There are a few possible reasons for black stool. If the stool is black and tarry it could be a sign of bleeding in the stomach. The most common cause for this is a stomach ulcer. However, we see some dogs who can get this if they have a bleeding issue caused by something they ate such as aspirin or rat poison.here are a few possible reasons for black stool. If the stool is black and tarry it could be a sign of bleeding in the stomach. The most common cause for this is a stomach ulcer. However, we see some dogs who can get this if they have a bleeding issue caused by something they ate such as aspirin or rat poison.