Related Questions
Q72: The _ clause has two distinct facets:
Q73: Pseudocolumns contain values present in a table,but
Q74: _ set membership evaluates an expression as
Q75: Any expression containing a NULL value always
Q76: Provide an example of a join query.
Q78: The DUAL table is owned by _
Q79: Flashback queries execute SQL statements in parallel,preferably
Q80: As already seen in this chapter,SELECT statements
Q81: The GROUP BY clause can use the
Q82: One of the most common uses of