| 1. | Is a subquery that retrieves rows from the database
从数据库中检索行的子查询。 |
| 2. | Other questions can be posed only with subqueries
其他问题只能通过子查询提出。 |
| 3. | D . fraction of optimizations that involve subqueries
D .涉及子查询的优化部分 |
| 4. | Explains how to create subqueries , or nested queries
解释如何创建子查询或嵌套查询。 |
| 5. | For more information about subqueries , see
有关子查询的详细信息，请参阅 |
| 6. | However , these statements should not contain subqueries
但是，这些语句不能包含子查询。 |
| 7. | This statement is represented in the example as subquery s1
这个语句在示例中表示为子查询s1 。 |
| 8. | Subquery select statements that appear inside an if statement
If语句中出现的子查询select语句。 |
| 9. | There are three basic types of subqueries
有三种基本的子查询。 |
| 10. | No columns , variables , or subqueries appear in the expression
表达式中没有列、变量、或子查询。 |
