SQL 面试题与答案
Test your skills through the online practice test: SQL Quiz Online Practice Test
问题 91. What operator performs pattern matching?
LIKE operator.
这有帮助吗？
添加评论
查看评论
问题 92. What is the use of the DROP option in the ALTER TABLE command?
It is used to drop constraints specified on the table.
这有帮助吗？
添加评论
查看评论
问题 93. What operator tests column for the absence of data?
IS NULL operator.
这有帮助吗？
添加评论
查看评论
问题 94. What are the privileges that can be granted on a table by a user to others?
Insert, update, delete, select, references, index, execute, alter, all.
这有帮助吗？
添加评论
查看评论
问题 95. Which function is used to find the largest integer less than or equal to a specific value?
FLOOR.
这有帮助吗？
添加评论
查看评论
用户评价最有帮助的内容：