A FLWOR expression is much like a SELECT-FROM-WHERE expression in SQL: it is used to iterate through a list of items and to optionally return something that is computed from each item.
FLWOR表达式非常像SQL中的SELECT - FROM - WHERE表达式——它用于对由多项组成的一个列表进行迭代，并且可以选择返回通过在每一项上进行计算得到的值。
Another misconception about XQuery is that it requires FLWOR (which stands for let, where, order by, return) expressions-similar to the misconception that SQL requires SELECT-FROM-WHERE expressions.
关于XQuery的另一个误解是它需要FLWOR(代表let、where、orderby、return)表达式—类似于SQL需要SELECT - FROM - where表达式这种误解。
Next, you have to select the image directory where the backup image writes to or restores from, as shown in Figure 1.
接下来，必须选择在其中写入或从其中恢复备份映像的映像目录，如图 1 所示。
This is a bit different than with the previous resource adapters where you select an operation from your EIS, and an operation with that name is created in the interface.
与使用以前的资源适配器相比，此图略有不同，其中您可以从EIS选择操作，具有该名称的操作是在接口中创建的。
Where; you select the columns of interest from rows in a table or tables where certain conditions are satisfied.
您可以从一个或多个表的行中选择您感兴趣的满足特定条件的列。
The resulting dialog has two sections: one for registered profiles and one where you may select a profile from the file system.
这时会弹出两个选项：一个是已经注册的概要文件，另一个是您可以从文件系统的什么位置选择一个概要文件。
When using the SELECT statement, make the WHERE clauses efficient to minimize the amount of data retrieved from a database.
使用select语句时，请高效地使用where子句来尽可能减少来自数据库的数据量。
If you click on a table in the FROM clause, it will highlight related columns in the SELECT and WHERE clauses.
如果单击from子句中的表，它会突出显示SELECT和where子句中相关的列。
SELECT STUDENT.NAME FROM STUDENT WHERE AGE BETWEEN 12 AND 16;
查询年纪在12至16岁之间的学生姓名；
SELECT STUDENT.NAME FROM STUDENT WHERE AGE NOT BETWEEN 12 AND 16;
查询年纪不 在12至16岁之间的学生姓名；
Let's take an Ajax AutoCompleteName example where, based on the user input, the application will predict a list of probables from which the user can select.
让我们以AjaxAutoCompleteName为例，基于用户输入，应用程序将会预测用户选择的几种可能性。
SYSCAT.TABLES CHECKCOUNT Number of check constraints defined on this table db2 "select tabname, checkcount from syscat.tables where checkcount > 0"
TABLESCHECKCOUNT 该表所定义的检查约束的数量db2 "select tabname, checkcountfrom syscat.tableswhere checkcount > 0"
Select mikescert.arm from the location where you stored the.arm file, as shown in Figure 4, and click OK.
从存储. arm文件的位置选择mikescert . arm，如图4所示，然后单击ok。
SYSCAT.TABLES KEYUNIQUE Number of unique constraints (other than primary key) defined on this table db2 "select tabname, keyunique from syscat.tables where keyunique > 0"
TABLESKEYUNIQUE该表所定义的唯一性（与主键不同）约束的数量db2 "select tabname, keyuniquefrom syscat.tableswhere keyunique > 0"
Since we are now using SQL SELECT statements, the restore_where argument changes from a Perl pattern match to the syntax of an SQL where clause.
因为现在使用的是SQLselect语句，所以restore_where自变量从Perl模式匹配改成SQL where子句。
Is interpreted as "select the names of all files from employee where edlevel and redirect the output to a file named '18'". The following commands return the correct output?
该命令被解释为“选择employee表中所有edlevel大于18的记录，并将输出重定向到名为‘18’的文件”。
From the pop-up menu, where you select Run as and then Run as pluglet.
从弹出菜单中，选择Runas，然后选择Runas pluglet。
Like most SQL statements, this example follows the standard SQL syntax of SELECT column (s)... FROM table (s)... WHERE condition (s).
跟大多数sql语句一样，本例遵循SELECTcolumn (s) .FROMtable (s)。
An affiliate network is simply an intermediary where you can select from a variety of advertisers.
联盟网站简单来说就是一个能够让你随意选择广告发布商的中介。
Virus Remover displays a more than comprehensive user interface in the form of a simple window from where you select the device you want to clean.
病毒卸妆显示比从那里你选择要清理的设备一个简单的窗口的形式全面的用户界面等等。
Select the location in the test suite hierarchy pane where you want to add the test suite that you are importing from another plan.
从测试套件阶层窗格中选取一个位置，您要将从其他计划汇入的测试套件加入至该位置。
In cases where you must write your own RFX function calls, select from these functions by data type.
当您必须撰写自己的rfx函式呼叫时，请按资料型别从这些函式中来选出。
From the top of the scene select all polygons ignoring bottom side is the place where particles will ganerate snow.
在场景的顶部选择所有忽略底部面的多边形，这是需要创建雪的部分。
As you can see, only half of the rail is swept, because the sweep starts from middle, where the profile curve is positioned. Select the surface and mirror it in the Top viewport as shown below.
就像你看到的，只有一半轨迹被扫描，因为是从轮廓曲线中点的位置开始的，选择面，然后在俯视图中进行镜像，如下图。
To us this is very exciting because it is the first example where we can actually see how we can select the patient who will benefit more from certain type of treatments.
对于我们来说，这是非常令人兴奋的，这是我们看到的如何选择治疗方式使患者获益的第一个例证。
Select * from student where id in (select id from achievement where mark>85);
请查询成绩>85分的学生的姓名；
Select * from student where id in (select id from achievement where mark>85);
请查询成绩>85分的学生的姓名；
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