单纯的SQL语言所包括的句子并不多，但在运用的过程中需求很多输入各种表、查询和字段的姓名。这样当你树立一个触及很多字段的查询时，就需求输入很多文字，与用查询规划视图树立查询比较，就费事多了。 所以我在树立查询的时分也都是先在查询规划视图将根本
单纯的SQL语言所包括的句子并不多，但在运用的过程中需求很多输入各种表、查询和字段的姓名。这样当你树立一个触及很多字段的查询时，就需求输入很多文字，与用查询规划视图树立查询比较，就费事多了。
所以我在树立查询的时分也都是先在查询规划视图将根本的查询功用都完结了，最终再切换到SQL视图经过编写SQL句子完结一些特别的查询。下面咱们就介绍一些在ACCESS运用中常常会用到的一些SQL语言。
我们说过在建立查询的时候可以切换到SQL视图去，下面来看看是怎么切换的：
当你打开一个查询以后，单击“新建方法”列表的时候并没有一个“使用SQL视图创建查询”的选项，
这也表明ACCESS并不提倡在工作中使用SQL语言，，那我们就单击“在设计视图中创建查询”这一项，之后将会在屏幕上出现一个设计视图，
现在我们要切换到SQL视图，只要将鼠标移动到工具栏最左面的“视图”选项按钮
右边的向下按钮上，单击鼠标左键，在弹出的下拉菜单中选中“SQL 设计视图”项就可以将视图切换到SQL状态。
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