• In that editor, enter EmpNo.

    编辑器中,输入EmpNo

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  • In this example, EMPNO is the unique key of the table.

    中,EMPNO唯一

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  • In this case, EMPNO should be listed first in the index.

    这种情况下,在索引应该首先列出EMPNO

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  • The problem is that EMPNO is included in the SELECT-list.

    问题EMPNO已经包含SELECT列表中。

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  • Click the Employee entity, and select empno its primary key.

    点击Employee实体选择empno作为主要关键字。

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  • Enter 000110 for the empNo value and select the Invoke button.

    输入000110作为empno选择Invoke按钮

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  • The updateEmployee page is to be passed a parameter named empno.

    页面updateemployee被传递给一个名为empno参数

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  • Select the SOAP bindings, and specify a value for the empno parameter.

    选择SOAP绑定empno参数指定一个

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  • The EMPNO field only contains numerics and Unicode support is not needed.

    empno字段仅仅包含数字,且需要Unicode支持

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  • And we also started by creating an index on the EMPNO and DEPTNO columns.

    我们创建关于EMPNOdeptno索引开始

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  • And, if DB2 USES the index the traditional way, the data will come back in EMPNO order.

    如果DB 2传统方式使用索引数据EMPNO顺序返回

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  • But with EMPNO listed in the WHERE clause, DB2 will dutifully retrieve that column, too.

    where子句列出EMPNO,DB 2还会尽职地检索

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  • Note: The select statement specified in this example has a parameter marker called: empno.

    注意这个例子指定select语句一个名为empno参数占位符。

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  • Create a parameter named empno, and assign it the value of the employee's empno for the selected row.

    创建一个名为empno参数然后将其赋予员工empno选中的行。

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  • Remember how you specified the EMPNO field to be the key field (in the DataGrid configuration dialog).

    记得是如何EMPNO字段指定关键字段的(DataGrid配置对话框中)。

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  • If an error message appears stating that a primary key is not defined, select empno as the primary key.

    如果出现出错信息,声称没有定义关键字,那么您可以选择empno为主关键字。

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  • You already know that EMPNO will be equal to the value '000010' because that is what the WHERE clause tells DB2 to do.

    已经知道empno等于“000010”,因为就是where子句要DB 2做的事。

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  • Here DB2 can match on only one column, and since LASTNAME is random, DB2 must do a data sort to bring our rows back in LASTNAME, EMPNO order.

    这里DB 2匹配并且因为LASTNAME随机的,DB 2必须执行数据排序LASTNAME、EMPNO顺序返回我们

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  • Columns in the existing indexes: If an index already exists on EMPNO or DEPTNO, it might not be wise to create another index on the combination.

    现有索引中的如果EMPNODEPTNO已经有了索引那么创建另一个关于该组合的索引也许并不明智

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  • Select each of the controls listed in the following table and update the Label and Alert messages as shown in the table: Select input [EMPNO:] and click Delete.

    选择列出所有控件并且更新表中标签警告消息:选择input [empno:],然后单击Delete。

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  • And DEPTNO should be listed second, allowing DB2 to do a direct index lookup on the first column (EMPNO) and then a scan on the second (DEPTNO) for the greater-than.

    然后列出DEPTNO从而允许DB 2第一(EMPNO)执行直接索引查找,然后针对大于号扫描第二列(DEPTNO)。

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  • Furthermore, if indexes already exist for both columns (one for EMPNO and one for DEPTNO), DB2 can use them both to satisfy this query so creating another index might not be necessary.

    而且如果已经存在关于这两索引(关于EMPNO,一个关于DEPTNO),DB 2可以使用它们满足查询因此创建另一个索引也许是没有必要的。

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  • Furthermore, if indexes already exist for both columns (one for EMPNO and one for DEPTNO), DB2 can use them both to satisfy this query so creating another index might not be necessary.

    而且如果已经存在关于这两索引(关于EMPNO,一个关于DEPTNO),DB 2可以使用它们满足查询因此创建另一个索引也许是没有必要的。

    youdao

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