说明表格中一列或一组列的缺省属性。
Specifies property defaults for a column or group of columns in a table.
震中距相近，波形相似，地震波组列丰富。
The similarities are similar epicentral distance, similar waveform and both with rich seismic wave groups.
这两组列都可以编制索引，但是使用不同的索引。
Both sets of columns may be indexed, but by different indexes.
可以为单个列或一组列修改频率和分位数统计信息的精确度。
The precision for the frequency and quantile statistics can be modified for an individual column or a group of columns.
当您想要在滚动或查看其他列数据时冻结一个或一组列时将会很有用。
Column locking is useful for when you want to freeze a column or collection of columns while scrolling and reviewing data in the other columns.
分区键是用于确定特定一行数据存储在哪个分区的一个列(或一组列)。
A partitioning key is a column (or group of columns) that is used to determine the partition in which a particular row of data is stored.
列组(ColumnGroup)统计信息将获得一组列的不同值组合的数目。
Column group Statistics obtains the number of distinct combinations of values for a group of columns.
可在整个列上计算聚合，或者由作为函数的第二个参数所给出的分组列指定的子组上计算聚合。
You can compute aggregations on the whole column, or on subgroups that are specified by the grouping column given as the second parameter of the function.
分区键(partitioned key)是指一列或一组列，用于确定特定行数据所存储的分区。
A partitioned key is a column, or group of columns, used to determine the partition in which the particular row of data is stored.
该部分创建了一个名称为“CATEGORIZED”的虚拟表，表中带有inner查询提供的一组列。
This creates a virtual table by the name "CATEGORIZED" with a set of columns supplied from inner queries.
但必须提供模式名、交易表名、组列、最小support和confidence以及最大的规则长度。
You have to provide a model name, the name of the transaction table, the group column, a minimal support and confidence, and a maximum rule length.
如果基于查询工作负载选择一个分区键，那么此分区键通常应该包含一个合并列或常被用于很多查询的一组列。
If you choose a partitioning key based on your query workload, the partitioning key should typically consist of either a joined column or a set of columns that is frequently used in many queries.
有时候，列组或类似的统计选项会很有用。
Sometimes, column group, or like statistics options can be useful.
表的一个通用模式是每一列包含一组重复的单元格。
The generalized pattern across the table is that each column contains a repeating group of cells.
收集单个列的统计数据还不足以提供所需信息，因此您需要收集列组统计数据。
Collecting statistics of individual columns may not be enough to provide the information required, so you need to collect column group statistics.
有时，页面或片段都是纯静态的，比如一列状态或一组经常问到的问题。
Sometimes, pages or fragments are purely static, such as a list of states, or frequently asked questions.
记录或行包含一组包含了数据的字段或列。
A record or row contains a set of fields or columns containing data.
它应该返回两个列，第一列中包含用户名，而第二列中包含组名。
It should return two columns, the first holding a username and the second holding a group name.
T077D表除了保持每个账户组的配置数据的关键列以外还有许多的列。
The T077D table has many columns besides the key columns holding the configuration data for each account group.
列组的使用将给多个谓词的联合选择提供更准确的估计。
The use of column groups provides more accurate estimates of the joint selectivity of multiple predicates.
如果有，它们将在左边的列中这个组下使用单词permission来描述。
If there were, they would be described below the group with the word PERMISSION in the left column.
随后rdf应用程序所要操作的就是清单2中显示的这列三元组了。
It is the list of triples shown in Listing 2 that is then acted on by RDF applications.
模板由关于数据库的模式信息、一组表、列属性和标识行的主键构成。
A template consists of schema information about a database, a group of tables, column attributes, and the primary keys that identify rows.
复制模板包含数据库的架构信息、一组表、列属性、标识行的主键。
Replication templates contain schema information about a database, a group of tables, column attributes, and the primary keys that identify rows.
第三列是组的一个数字索引。
模板使用关于数据库的模式信息、一组表、列和主键定义一组主副本和一个副本集。
A template USES schema information about a database, a group of tables, columns, and primary keys to define a group of master replicates and a replicate set.
第一列是组的名字。
BREAK命令可用于基于特定列值将报表分成一组记录。
The break command can be used to break the report into a set of records based on a particular column value.
由背部一组两列竖排表面穿环组成。
They are a series of surface piercings arranged up the back in two vertical columns.
由背部一组两列竖排表面穿环组成。
They are a series of surface piercings arranged up the back in two vertical columns.
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