键列

• Notice that a key icon now identifies the primary key columns
  。一个钥匙键图标可标识主键列。
• At least one key column must be defined
  必须至少定义一个键列。
• Finally , the code sets one column as the primary key column
  最后，该代码将一个列设置为主键列。
• The following example creates a nonclustered index with one key column
  以下示例创建具有一个键列(
• To display the index key columns , use
  若要显示索引键列，请使用
• They can be data types not allowed as index key columns
  它们可以是不允许作为索引键列的数据类型。
• Key columns contain a unique identifier for each row in a table
  键列包含表中每个行的唯一标识符。
• They are used as the primary key columns for the
  的主键列。
• To find the identifier of the full - text key column in the
  表中查找全文键列的标识符，请执行以下语句：
• Column was set to 1 , to indicate that it is a set key column ; the
  属性设置为1 ，以指示这是设置键列；将