有一段时间，两列火车平行行驶，有时一列火车稍微靠前，有时则是另一列。
For a time the two trains ran parallel, now one gaining a little, now the other.
正是在这段时间里，他写出了他最著名的著作《战争与和平》和《安娜·卡列尼娜》。
It was during this time that he wrote his most famous books War and Peace and Anna Karenina.
任何利用主索引列的查询将会遭遇更快速响应时间问题。
Any query that utilizes the Primary Index column will encounter faster response times.
DB 2在执行第一条更改表数据的语句时生成一个开始时间列。
DB2 generates the start time column when it executes the first statement that changes the table's data.
如果定义为NOT NULL，该值会对应于与最近的事务相关联的开始时间(AS ROWbegin列的值)。
If defined as NOT NULL, the value corresponds to the start time associated with the most recent transaction (the value of the as ROW BEGIN column).
LEI实际查询的是eimodified列中被更新的时间戳。
LEI actually looks for an updated time stamp in the EIMODIFIED column.
头两列显示对测量时间的收集（Archive或Snapshot）活动的类型。
The first two columns show the type of collection (Archive or Snapshot) active at the time of the measurement.
列清单那可能需要花费不少的时间，但列清单消耗时间的长短将非常有力地证明你到底有多少多余的材料在填塞着你的空间。
This could take some time, and the amount of time it takes to catalogue your material goods might prove once and for all that you have way too much stuff.
响应时间列显示了每个应用程序的时间花费指标，这样，您可以轻松地以最高的响应时间识别应用程序，并确定花费时间最多的地方。
The response time columns show you the time spent metrics per application so that you can identify the application with the highest response time easily, and determine where the most time is spent.
这个条件如第35行所示，其中，如果在一段连续的时间内对该列排序，并且以前的排序方向为升序，那么它必须切换为降序排序。
This condition is shown in line 35, where if the column is being sorted for a consecutive time and the previous direction was upward, it must be switched to downward sorting.
包含时态数据的表有两个日期-时间列，它们表明每一行有效的期限(时间间隔)。
A table that includes temporal data has a pair of date-time columns that indicate the period (the time interval) when the row is valid.
第一列显示时间，第二列是累计的内存使用量，第三列是增加的内存使用量，而第四列显示函数调用，包括参数。
The first column shows time, the second is accumulated memory use, the third is incremental memory use, and the fourth shows function calls, including the parameters.
对于行修改时间戳列(只针对这种列)，如果该列使用IMPLICITLYhidden属性定义，那么当对表列进行隐式引用时，不会对该列执行外部化。
For row change timestamp columns only, if the column is defined with the IMPLICITLY HIDDEN attribute, then it is not externalized when there is an implicit reference to the columns of the table.
该时间戳列默认情况下由数据库管理器维护，但是也接受用户提供的输入值。
This timestamp column is maintained by default by the database manager, but a user-provided input value is also accepted.
例如，我们无法针对分区的列使用标识列或者时间戳，而分区列需要是主键的组成部分。
For example, one cannot use identity columns or timestamps for the partitioning column, but the partitioning column has to be part of the primary key.
再看看那一次，1960年代末有一小段时间，约翰·列侬买了辆迷幻风格的拉斯莱斯。
Or consider this: for a brief time in the late 1960s, John Lennon owned a psychedelic Rolls-Royce.
如果可能更新坐标列，但是源表包含一个时间戳列，其中记录了每行最后一次更新的时间，那么仍然可以避免批量复制。
If updates to the coordinate columns are possible, you may still be able to avoid bulk copies if the source table contains a time stamp column that records the time of last update for each row.
上述问题可以通过使用DISTINCT和一个或多个时间戳列模拟FIFO或LCFO来回避；但是，DB2将使用一个额外步骤来消除重复。
The above problem can be circumvented by the use of DISTINCT and one or more timestamp columns to simulate FIFO or LCFO; however DB2 will use an additional step to eliminate the duplicates.
这条命令将监视持有焦点的x窗口的击键，并在所有窗口中记录了10个平均数后输出击键停顿时间的密码散列。
This command will monitor the keystrokes of the currently in-focus X window and print out a cryptographic hash of the keystroke dwell times after 10 averages have been recorded across all Windows.
隐式隐藏列：从兼容性方面来说，这个特性有助于将行修改时间戳列应用到现有表和应用程序。
Implicitly hidden columns: For compatibility, this feature eases the adoption of the row change timestamp columns to existing tables and applications.
为了获取在大容量表中查询的合理的响应时间，最好为某列或者列组合定义索引。
To get reasonable response times for queries on large tables, it is a best practice to define indexes for certain columns or combination of columns.
通常，有一个mdc维是基于时间的列，这样一来，同一个列既可以用于MDC，又可以用于TP。
Generally, one of the MDC dimensions will be a time-based column so the same column can be used for both MDC and TP.
要支持这一特性，表需要定义一个新生成的行修改时间戳列来保存时间戳值。
To support this feature, the table needs to have a new generated row change timestamp column defined to store the timestamp values.
这可以通过包含行修改时间戳列的表实现，通过定义行修改时间戳列来保存ROWCHANGETIMESTAMP表达式生成的时间戳值。
This is implemented by a table containing a row change timestamp column defined to store the timestamp values generated by a ROW CHANGE TIMESTAMP expression.
这可以通过ALTERtable语句添加到现有表，或者在创建新表时定义行修改时间戳列。
This can be added to existing tables using the ALTER table statement, or the row change timestamp column can defined when creating a new table.
表具有一个行修改时间戳列：ROWCHANGETOKEN表达式返回一个从列的时间戳值获得的bigint值。
The table has a row change timestamp column: a row change TOKEN expression returns a BIGINT value derived from the timestamp value in the column.
第四列展示MQT引入的改善，即第二列和第三列之间的时间差异，第五列展示改善的百分比。
The fourth column shows the improvement introduced by the MQTs as a time difference between the second and third columns and the fifth column shows the percentage of the improvement.
完美散列函数是一种在时间和空间方面都十分高效的静态搜索集实现。
Perfect hash functions are time- and space-efficient implementations of static search sets.
一个表中有太多列比仅有一些列时进行查询所需的扫描时间要长。
Too many columns in a table can make the scan time for queries much longer than if there are just a few columns.
一个表中有太多列比仅有一些列时进行查询所需的扫描时间要长。
Too many columns in a table can make the scan time for queries much longer than if there are just a few columns.
应用推荐