SAP ABAP 内部表(Internal Tables) 内部表(Internal Tables) 内部表实际上是一个临时表,其中包含正在执行的 ABAP 程序的记录。内部表仅在 SAP 程序运行期间存在。它们使用 ABAP 语言处理大量数据。当您需要从数据库表中检索数据时,我们需要在 ABAP 程序中声明一个内部表。
ABAP offers standard, sorted, & hashed types of internal tables. The type of table that you should use (and hence the access method) is determined by the operations that will be performed most frequently with the table. 1) Standard tables Most appropriate for general table operations. Accessed...
line是一个class,而wa是一个object. 接着是声明一个每一行的类型是line的internal table: DATA itab TYPE line OCCURS 0. 我在暂时把OCCURS作为了区别工作区和内表的标志. OCCURS应该有更深层次的意义,但我目前只能领悟至此... 当我们用以上这个方法来声明一个iternal table时,可以选择是否有无header line. ...
一. Internal Table 的宣告 ABAP/4中的Internal Table是一种Data Structure,类似于其它语言中的STRUTURE,它可以由几个不同类型的字段(field)组成,用来表示具有不同属性的某一事物,单独一笔数据表示某个事物,多笔数据表示具有相同属性的多个事物.例如: 为了存取或记录某班的同学资料,我们创建如下的internal table: DA...
The table type determines how ABAP will access individual table entries. Internal tables can be divided into three types:Standard tables have an internal linear index. From a particular size upwards, the indexes of internal tables are administered as trees. In this case, the index administration ...
下面简单介绍一下如何在abap语言中定义一个嵌套内表(nested internal table),也就是内表中的一个字段也是内表。 1, SE11中定义一个表类型 这里找了一个SAP标准的表类型EKKO_TTY 2, 定义内表时使用table type 例子代码如下,其中字段podata就是嵌套的另外一个表。
SAP Internal Tables are used in ABAP programs. Its used for storing complicated data structures in working memory. Data is stored in a line by line fashion in memory and each line will have the same structure.Internal tables do all the operations like arrays in other programming languages. Dat...
CALL METHOD cl_abap_structdescr=》create EXPORTING p_components = lt_comp RECEIVING p_result = lr_struc. *根据动态结构创建动态内表类型 CALL METHOD cl_abap_tabledescr=》create EXPORTING p_line_type = lr_struc RECEIVING p_result = lr_table. ...
TABLE1 TYPE VECTOR, TABLE2 TYPE ITAB, END OF DEEPLINE. TYPES DEEPTABLE TYPE DEEPLINE OCCURS 10. 语法: DATA <f> <type> OCCURS <n> [WITH HEADER LINE]. 使用DATA语句 DATA FLIGHT_TAB LIKE SFLIGHT OCCURS 10. 本示例创建数据对象FLIGHT_TAB,其结构与数据库表格SFLIGHT相同。 DATA: BEGIN OF I...
#To create an internal table with a header line, use either the BEGIN OF clause before the OCCURS clause or the WITH HEADER LINE clause after the OCCURS clause in the definition of the internal table. #To create an internal table without a header line, use the OCCURS clause without the ...