Computer Science
Which operator tests a column for the absence of data (i.e., NULL value) ?
- EXISTS operator
- NOT operator
- IS operator
- None of these
Related Questions
Which operator performs pattern matching ?
- BETWEEN operator
- LIKE operator
- EXISTS operator
- None of these
Consider the following query
SELECT name FROM class WHERE subject LIKE ' ............... Computer Science' ;The pattern '_ _ _' matches any string of …………… three characters. '_ _ _%' matches any string of …………… three characters.
- Atleast, Exactly
- Exactly, Atleast
- Atleast, All
- All, Exactly
By default, ORDER BY clause lists the results in …………… order.
- Descending
- Any
- Same
- Ascending