Replaces the select list of a plain select block with text, such as 1 for a count body. Not applied to a set operation, a VALUES list or a SELECT DISTINCT, where the select list decides which rows there are.
text
1
VALUES
SELECT DISTINCT
Replaces the select list of a plain select block with
text, such as1for a count body. Not applied to a set operation, aVALUESlist or aSELECT DISTINCT, where the select list decides which rows there are.