If there is an index on the join column, the costs will be significantly less; otherwise the database server must perform table scans for all tables, both outer and inner tables.
如果连接列上有一个索引，那么其成本会相当低；否则，数据库服务器就必须对所有表(外部和内部表)执行表扫描。
The join is performed by scanning the inner table of the hash join, CUSTOMERS, and generating a lookup table by hashing the join column values.
该连接的执行过程包括扫描散列连接中的内表CUSTOMERS，并通过散列连接列的值生成一个查找表。
The values of the inner data set's parameters are from the link table's SOURCE_ITEMID column because a work item can find its sub - work item's WI_ITEMID by retrieving the data from Links table.
内部数据参数的值来自于联系表格的source_itemid列，因为一个工作项可以通过从Links表格中获得数据，来找到其子工作项的WI_ITEMID。
Select the inner table of links, and bind its TARGET_ITEMID column to the WI_ITEMID column of the outer table (Figure 15).
选择联系的内部表格，并将其TARGET _ itemid列于外层表格(图15)的wi_itemid列联系起来。
Once you're inside the inner loop, create an XML element to represent the cell, using the appropriate column name as the element name.
一旦进入内部循环，就创建一个XML元素来表示单元格，使用适当的列名作为元素名。
IT then reads from the outer table BAD_CREDIT using the SHIP operator, hashing the join column values, and checking in the lookup table generated for the inner table.
然后，它使用SHIP操作符读外表BAD_CREDIT，散列连接列的值，并检查为内表生成的查找表。
An inner join is essentially the intersection of two tables, where the tables are matched by comparing the values of a key column, such as itemNumber.
内连接实际上是两个表的交集，它通过比较关键列(比如itemnumber)的值来匹配表。
By altering the layout and thickness of the inner ribs, the dynamic characteristics of the upright column are calculated.
通过改变立柱内部筋板的布局和厚度来研究其对立柱动态性能的影响。
For a nullable joined column, is it better performance to do a outer join, or inner join to a "null" row?
一个空连接柱，它是更好的性能做了一个外连接，或内加入一个“空”行吗？
B. Inner wall: Prevented the chicken group or the cow group escape, wants all around to install the steel and iron column the parapet.
内墙：防止鸡群或牛群逃跑，要在四周安装钢铁立柱的栏杆。
The forming law of sinking column in Huabei type coal field, especially at the Fengfeng coal mine is analyzed and the mechanism of groundwater inner cycle in sinking columns is put forth.
分析了华北型煤田，特别是峰峰矿区陷落柱的发育规律，提出了陷落柱的地下水内部循环形成机理。
A simplified formula to estimate the appropriate dimension of inner steel tube is put forward for optimizing the column.
提出了简化估核心柱内配圆钢管尺寸的具体方法和公式。
Conclusion the scatter plot of row and column points indicates directly the characteristics of the distribution and the inner relationship.
结论因子负荷图直观地表述了各疾病与月份之间的内在联系与分布特征。
Based on the main structure of the erect sleeve washer, it installs a hollow column in the center of the inner tank.
它在竖直套桶式洗衣机主体结构基础上，内桶中心安装一空心立柱。
In two imported directly by precision inner diameter glass tube adsorption column (standard wall glass tube adsorption column is no longer supported), more user-friendly.
直接采用两支进口精密内径玻璃管吸附柱(标准壁玻璃管吸附柱不再配)，更方便用户使用。
The structural system, which the inner core connect huge column by outrigger truss, has been developed in recent years.
某超高层采用框架-核心筒结构体系，在内筒与核心筒之间采用伸臂桁架连接。
An inner hollow cavity of the semicircle arc plate of the utility model is comprising of a steam tube, with advantages of saving material and installment column, and low cost.
本实用新型的半圆弧形板的内空腔构成蒸气管路，节省材料和安装体积，成本较低。
The simulation calculations and analysis was made for operation technology of separation column in Zimmer polyester plant. The inner structure were reformed by directed float valve tray.
对吉玛聚酯装置工艺分离塔的操作工艺进行了模拟计算分析，采用导向浮阀塔板对该塔的内构件进行了改造。
A gas inlet of a spray purifying column is communicated with the main kiln inner cavity, and a gas outlet thereof is communicated with a chimney.
喷雾净化塔的进气口与主窑内腔连通，其出气口与烟囱连通。
A gas inlet of a spray purifying column is communicated with the main kiln inner cavity, and a gas outlet thereof is communicated with a chimney.
喷雾净化塔的进气口与主窑内腔连通，其出气口与烟囱连通。
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