You must generate data for primary key columns.
您必须为主索引键资料行产生资料。
An index with many key columns is called a wide index.
具有许多键列的索引称为宽索引。
Example 4: Collect catalog statistics on key columns and on one column that is not.
示例4：收集关键列上和一个非关键列上的目录统计信息。
A partitioning key should include one to three columns.
一个分区键应该包括一至三个列。
But, you can perform range scans on the remaining columns in the index key.
但是，您可以在索引键的其余列上执行范围扫面。
A composite key is a key made up of multiple columns.
复合键就是由多个列组成的键。
Our virtual foreign key is based on two columns from the TB_RIGHT table.
我们的虚拟外键基于TB_RIGHT表的两个列。
Here's the key to SimpleDB: forget about the columns in todo_simple (Table 2).
SimpleDB的关键在于：忘记了todo_simple中的列(表2)。
Enter the following columns: cust_id (check key column), name, address, and phone.
输入以下列：cust_id （设置为主键列） ，name，address和phone。
How can I do windowed query on multiple columns primary key?
我怎么能做窗口的多个列主键查询吗？
Is it possible to create a Foreign Key on 2 columns with differing Collations?
它是可能的不同的排序规则创建2列外键？
Enter the columns contributing to that table's primary key.
输入分配给该表的主键的列。
In the grid beneath, choose the columns contributing to the table's primary key.
在方格的下方，选择组成资料表主索引键的资料行。
In the grid beneath, choose the columns contributing to the table's primary key.
在方格的下方，选择组成资料表主索引键的资料行。
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