在功能开发完成后，需要使用一些测试数据来进行测试，有时可能需要将一些比较新的生产数据复制到测试系统，为了完成数据表的复制，需要使用一些SAP标准的BAPI来完成。 BAPI：RFC_READ_TABLE
代码语言：javascript复制DATA: SO_OPTION TYPE TABLE OF rfc_db_opt WITH HEADER LINE,
SO_FIELDS TYPE TABLE OF rfc_db_fld,
WA_FIELDS TYPE rfc_db_fld,
SO_DATA TYPE TABLE OF tab512,
WA_SO_DATA TYPE tab512.
DATA: T_FIELDS TYPE TABLE OF DDSHSELOPT WITH HEADER LINE.
DATA: LV_WHERE TYPE STRING.
"Screen Define"
PARAMETERS: p_table TYPE dd02l-tabname DEFAULT 'RSEG'.
PARAMETERS: p_dest TYPE rfcdes-rfcdest.
"Begin Business"
START-OF-SELECTION.
REFRESH:T_RSEG1,I_WHERE,I_FIELDS.
CLEAR T_FIELDS.
T_FIELDS-SHLPFIELD = 'BELNR'.
T_FIELDS-SIGN = 'I'.
T_FIELDS-OPTION = 'BT'.
T_FIELDS-LOW = '5100000009'.
T_FIELDS-HIGH = '5100000019'.
APPEND T_FIELDS.
* Convert selopt into string *
CALL FUNCTION 'F4_CONV_SELOPT_TO_WHERECLAUSE'
* EXPORTING
* GEN_ALIAS_NAMES = ' '
* ESCAPE_ALLOWED = ' '
IMPORTING
WHERE_CLAUSE = LV_WHERE
TABLES
SELOPT_TAB = T_FIELDS.
SO_OPTIONS-TEXT = LV_WHERE.
APPEND SO_OPTIONS.
REFRESH T_FIELDS.
CLEAR T_FIELDS.
T_FIELDS-SHLPFIELD = 'GJAHR'.
T_FIELDS-SIGN = 'I'.
T_FIELDS-OPTION = 'EQ'.
T_FIELDS-LOW = '2020'.
APPEND T_FIELDS.
CLEAR LV_WHERE.
* Convert selopt into string *
CALL FUNCTION 'F4_CONV_SELOPT_TO_WHERECLAUSE'
* EXPORTING
* GEN_ALIAS_NAMES = ' '
* ESCAPE_ALLOWED = ' '
IMPORTING
WHERE_CLAUSE = LV_WHERE
TABLES
SELOPT_TAB = T_FIELDS.
CLEAR T_WHERE.
SO_OPTIONS-TEXT(3) = 'AND'.
SO_OPTIONS-TEXT 4 = LV_WHERE.
APPEND SO_OPTIONS.
CALL FUNCTION 'RFC_READ_TABLE' DESTINATION p_dest
EXPORTING
query_table = p_table
* DELIMITER = ' '
* NO_DATA = ' '
* ROWSKIPS = 0
* ROWCOUNT = 0
TABLES
OPTIONS = SO_OPTIONS
fields = SO_FIELDS
data = SO_DATA
* EXCEPTIONS
* TABLE_NOT_AVAILABLE = 1
* TABLE_WITHOUT_DATA = 2
* OPTION_NOT_VALID = 3
* FIELD_NOT_VALID = 4
* NOT_AUTHORIZED = 5
* DATA_BUFFER_EXCEEDED = 6
* OTHERS = 7
.
IF sy-subrc <> 0.
MESSAGE ID SY-MSGID TYPE SY-MSGTY NUMBER SY-MSGNO
WITH SY-MSGV1 SY-MSGV2 SY-MSGV3 SY-MSGV4.
ELSE.
MODIFY (p_table) FROM TABLE SO_DATA.
IF sy-subrc = 0.
COMMIT WORK AND WAIT.
ENDIF.
ENDIF.跨 Client 获取数据： RFC_READ_TABLE 获取其它 Client 的数据时，需要增加 DESTINATION dest_client 选项。
dest_client：SM59 中维护的远端功能呼叫目的地
BAPI：RFC_READ_TABLE 使用限制 行数限制：RFC_READ_TABLE的行数限制为512个字符；也就是说，每行数据不能超过 512 个字符 OPTION 保留查询条件： 查询的长度限制为 75 个字符
Float：RFC_READ_TABLE 不返回任何包含 Float 数据类型的字段 数据量太大：600,000 多个条目将导致 SYSTEM FAILURE 或 PAGE ALLOC FAILED 错误。
