• 内部初始化ids创建的。

    Internal Tables are created when IDS is initialized.

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  • 利用内部索引恰好一个聚集索引。

    The index exploited for the inner table happens to be a clustered index.

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  • 文档类型定义(DTD)注册存储内部

    Document type definitions (DTDs) registered and stored in internal tables.

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  • 基数越高进入内部、每条合格的(外部记录探测就越多

    The higher the cardinality, the more probes into the inner table, one per qualifying (outer) record.

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  • 共享内存包含共享内存所有其他结构描述包括内部缓冲

    The shared-memory header contains a description of all other structures in Shared memory, including internal tables and the buffer pool.

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  • 选择一个散列连接PART作为内部这个计划只需运行299

    It selects a hash join with PART as the inner table which runs in 299 seconds.

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  • 对于数据库选择大量数据的情况,可以一个内部有助于提高性能

    This can be an internal table for bulk selects from the database, which has performance advantages.

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  • 然而合并扫描联接好处不必反复地扫描内部因为嵌套循环联接工作。

    However, the benefit of the merge scan join is that the inner table does not have to be scanned repeatedly as it does for nested loop joins.

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  • 为了便于讲解,使用ABAP write语句这个内部内容输出标准输出设备

    For the purpose of illustration the contents of this internal table are printed to the standard output device using an ABAP write statement.

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  • 这个命令模板定义自动包括了所有用户定义并排除了数据库中定义视图内部

    This command automatically includes all the user-defined tables in the template definition and excludes the views and internal tables defined in the database.

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  • 内部记录来自外部条合格的记录相匹配(内部输入基数1)。

    One record of the inner table will match each qualifying record from the outer table (inner Input Cardinality value is 1).

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  • 尽管使用字符串变量容易,但是如果通过远程函数调用发送动态sql可能需要使用内部

    Although using a string variable is easier, you might need to use an internal table if a remote function call sends the dynamic SQL code.

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  • 因此决定选择哪种联接方法时,优化内部扫描平衡排序成本性能优势以便促进决策

    Therefore, when deciding which join method to choose, the optimizer balances the sort cost and the performance benefit for the inner table scan to drive the decision.

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  • 就是说联接操作内部扫描8来自外部输入 8 个合格的记录每个都将被扫描一

    That is, the inner table of the join operation will be scanned eight times, once for each of the eight qualifying records from the outer input.

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  • 那些内部目的功能为了记录共享内存资源状态使用例如缓冲区dbspace事务

    The purpose and function of those internal tables is to keep track of shared-memory resources status and usage such as buffers, chunks, dbspaces, transactions and so on.

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  • 通常情况下外部输入基数显然不小对于内部没有种有效访问方法优化器会选择合并扫描联接

    Typically, the optimizer chooses merge scan join when the cardinality of the outer input is not obviously small and there is no efficient access method for the inner table.

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  • 因为通过TBSCAN扫描内部不能MSJOIN保证预期顺序,所以添加sort节点执行顺序。

    Because the inner table is scanned with TBSCAN, which does not guarantee the expected order for MSJOIN, a SORT node is added to enforce the order.

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  • 操作系统通过内部处理器地址空间中的内存映射到内存,该定义哪些内存段哪些处理器所拥有,等等。

    Operating systems map memory segments in a processes' address space to memory pages through an internal table which defines what memory segments are owned by what processes, and so on.

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  • 性能角度来看认为是一个非常有效联接操作因为通过贯穿唯一索引的唯一访问扫描内部成本最优的。

    From the performance perspective, this is considered a very efficient join operation, because the cost for scanning the inner table is optimal via unique access through a unique index.

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  • 数据库服务器使用所有筛选器之后外部检索出的很少内部具有一个用于执行连接索引

    The number of rows retrieved from the outer table after the database server applies any table filters is small, and the inner table has an index that can be used to perform the join.

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  • 如果连接一个索引那么其成本会相当否则数据库服务器就必须所有(外部内部)执行扫描

    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.

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  • 一般来说,如果内部索引良好的集群且预测内部多次探测,则使用复合排序嵌套循环将受到优化器青睐

    In general, a nested loop join with sort composite is favored by the optimizer if the inner index is well-clustered and the inner table is expected to be probed many times.

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  • 如果内部没有索引那么数据库服务器就会构建索引的成本连续扫描的成本进行比较然后选择成本最低一种方法。

    If the inner table does not have an index, the database server will compare the cost of building an index on the table to the cost of a sequential scan, and will choose the one with the least cost.

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  • OpenSQLselect子句总是需要一个数据结构比如结构内部(对于大量调用),调用结果放在这个数据结构中。

    An Open SQL select clause always needs a data structure where it can put the results of the call, such as a structure or an internal table for bulk calls.

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  • 尽管XML内部存储层次化格式,但逻辑上,在数据库中,似乎存储在CLOBBLOB中

    Although internally the XML is stored in a hierarchical format, logically in the database table it appears to be stored in a CLOB or BLOB.

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  • 如何在注册内部外部定义管理服务元数据

    How is service metadata defined and managed within and outside of the registry?

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  • 这样一种应用程序场景突出示例SAP系统内部结构存储数据

    A prominent example of such an application scenario is SAP systems, which store data in an internal structure of tables.

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  • 模板生成复制名称基于模板服务器名、惟一内部ID复制ID名。

    The names of master replicates generated by templates are based on the template name, the server name, a unique internal ID, the replicate ID, and the table name.

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  • 命令定义数据库test内部所有复制

    This command defines replicates on all the internal tables of the database test.

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  • 如果内部哈希没有URI返回空值。

    If the URI does not exist in the internal hash table, a null is returned.

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