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1·The capability is checked against null in the first part of the if clause.

功能是根据 if 语句的第一部分获得的。

2·The if clause determines whether the value of the ResponseRequested sub-element for a given comment is equal to Yes.

if 子句判断一条给定评论的 ResponseRequested 子元素的值是否等于 “Yes”。

3·If we got an if then statement are we asserting an antecedent, an if clause or the consequent, Q the then clause, or are we saying if P then Q.

如果我们的论述中有如果,我们在主张先行词，假设条件句或者结果，然后从句，或者我们说如果P那么。

4·The expression used in the if statement (and in the elif clause and the while loop discussed later in this article) can be as complex as necessary.

if语句(以及本文后面讨论的elif子句和while循环)中的表达式可以很复杂。

5·When the if clause has more than one condition, you can choose to have it evaluate to true when any of the conditions are true or when all of the conditions are true.

当 if 子句有多个条件时，您可以选择让它在任何条件为 true 时求值为 true，或者在所有条件都为 true 时才求值为 true。

6·Ask the students to make up sentences using the adverbial clause of condition with if.

要求学生使用 if 来组成条件状语从句。

7·If you do not specify anything for this clause, audit records from all databases in the instance are eligible for extraction.

如果该子句未指定任何内容，那么可以提取来自实例中任何数据库的审计记录。

8·Use this clause if the table must be up and available at any time.

如果该表在任何时刻都必须是可用的，那么应该使用该子句。

9·If you want to move a subset of data, you should modify the SELECT clause accordingly.

如果您只希望移动其中一部分数据，那么您应该相应地修改select子句。

10·If all the columns in the clause appear in the required sequence with a single index, the database server USES the index to read the rows in the ordered sequence, thus avoiding a sort.

如果该子句中所有的列都是以用单个索引要求的顺序出现的，那么数据库服务器就使用索引来按顺序读取行，因而避免了排序。