表数据倾斜指的是特定的一些数据库分区上的某个表内的记录数与这个表所跨的所有数据库分区的平均记录数之间的差额。
Table data skew refers to a difference between the number of records in a table on particular database partitions and the average number of records across all database partitions for this table.
从最佳实践的角度来看,各个数据库分区上的表数据倾斜应该不多于10%。
From the best practices perspective, the table data skew on every individual database partition should be no more than 10%.
您正在设计一个将被哈希分区的新表,或者您已经有了一个哈希分区的表,并且此表有可能会存在数据倾斜问题。
You are either designing a new table that will be hash-partitioned, or you have an existing hash-partitioned table that might have a data skew problem.
这个输入参数指定要被估算数据倾斜的表的名称。
This input parameter specifies the name of the table to be estimated for data skews.
这个输入参数指定包含要被估算数据倾斜的表的模式的名称。
This input parameter specifies the name of the schema that contains the table to be estimated for data skews.
例程然后会为了进行现有数据倾斜的估计运行相同的报告并且最后还会丢弃这个副本表。
It then runs the same report for the existing data skew estimation and, at the end. drops the copy table.
使用辅助表模仿数据倾斜。
每当您有理由期望在生产数据中出现数据倾斜时,您就可能需要在测试数据中再现数据倾斜,首先,在一个表中存储预计频率。
Whenever you have a reason to expect data skew in production data, you might want to reproduce data skew in your test data. First, store the estimated frequencies in a table.
盘管的标准型式均为铜管串铝翅片结构,采用机械胀管。表冷段设计有倾斜式排水盘,保证彻底排尽水盘中的凝水。
All standard coils are mechanically expanded copper pipes plus aluminum fins. The surface cooling section is equipped with a pitched discharge coil to ensure complete discharge of condensed water.
带单元可以水平放置,否则将面临的边缘打磨或轮廓,或与工作表使用垂直倾斜。
The belt unit can be positioned horizontally for edge or face sanding or vertically for contour work or use with the tilting table.
正邦软件分析该识别您的身份是如何形成的字母表中的每个字母,再加上像你的写作的倾斜和间距。
The Bond software analyzes this to identify how you form each letter of the alphabet, along with things like the slant and spacing of your writing.
在两位使用自己的立场一表安装倾斜或带或光碟单位。
The tilting table installs in one of two positions for use with either the belt or disc units.
在两位使用自己的立场一表安装倾斜或带或光碟单位。
The tilting table installs in one of two positions for use with either the belt or disc units.
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