ABAP Select data from SAP table RFPOSINF into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP RFPOSINF table and store it within an internal table, including using the newer @DATA inline declaration methods. It also shows you various ways to process this data using ABAP work area, inline declaration or field symbols including executing all the relevant CONVERSION_EXIT routines specific to RFPOSINF. See here for more generic Select statement tips.

Sometimes data within SAP is stored within the database table in a different format to what it is displayed to the user. These input/output conversation FM routines are what translates the data between the two formats.

There is also a full declaration of the RFPOSINF table where each field has a char/string type for you to simply copy and paste. This allows you to use processing that is only available to these field types such as the CONCATENATE statement.

DATA: IT_RFPOSINF TYPE STANDARD TABLE OF RFPOSINF,
      WA_RFPOSINF TYPE RFPOSINF,
      GD_STR TYPE STRING.

DATA: lo_typedescr type REF TO cl_abap_typedescr.
DATA: lv_fieldname type fieldname.

FIELD-SYMBOLS: <FIELD> TYPE any.
FIELD-SYMBOLS: <RFPOSINF> TYPE RFPOSINF.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_RFPOSINF.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM RFPOSINF
  INTO TABLE IT_RFPOSINF.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM RFPOSINF
*  INTO TABLE @DATA(IT_RFPOSINF2).
*--Further methods of using ABAP code to  select data from SAP database tables

*You can also declare the header/work area using the in-line DATA declaration method
READ TABLE IT_RFPOSINF INDEX 1 INTO DATA(WA_RFPOSINF2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_RFPOSINF ASSIGNING <RFPOSINF>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<RFPOSINF>-KEY = 1.
<RFPOSINF>-TEXT = 1.
<RFPOSINF>-BEG1 = 1.
<RFPOSINF>-BEG2 = 1.
<RFPOSINF>-BEG3 = 1.

ENDLOOP.

LOOP AT IT_RFPOSINF INTO WA_RFPOSINF.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_RFPOSINF-BEG4, sy-vline,
  WA_RFPOSINF-END1, sy-vline,
  WA_RFPOSINF-END2, sy-vline,
  WA_RFPOSINF-END3, sy-vline,
  WA_RFPOSINF-END4, sy-vline,
  WA_RFPOSINF-SUM, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_RFPOSINF you want to display...

  WRITE:/ sy-uline.
* Aternatively use generic code to Write field values (and NAME) to screen report
  DO.
    ASSIGN COMPONENT sy-index OF STRUCTURE wa_RFPOSINF TO <field>.
    IF sy-subrc <> 0. EXIT. ENDIF.
    WRITE:/ 'Field Value', <field>, sy-vline.
    gd_str = <field> .
    lo_typedescr ?= CL_ABAP_DATADESCR=>DESCRIBE_BY_DATA( <field> ).
    lv_fieldname = lo_typedescr->GET_RELATIVE_NAME( ).
    WRITE:/ 'Field Name', lv_fieldname.
  ENDDO.

  
*Redo loop but convert all fields from internal to out value  
LOOP AT IT_RFPOSINF INTO WA_RFPOSINF.


*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Convert all fields to display/output versions using conversion routines
  PERFORM convert_all_field_values CHANGING wa_EKKO.
	 
ENDLOOP.

  
*&---------------------------------------------------------------------*
*& Form convert_all_field_values
*&---------------------------------------------------------------------*
FORM convert_all_field_values CHANGING p_EKKO LIKE wa_EKKO.
DATA: ld_input(1000) TYPE c, ld_output(1000) TYPE C.
ENDFORM. 

*&---------------------------------------------------------------------*
*& Form process_as_string_field_values
*&---------------------------------------------------------------------*
FORM process_as_string_field_values CHANGING p_EKKO LIKE wa_EKKO.

TYPES: BEGIN OF T_RFPOSINF_STR, 
KEY TYPE STRING,
TEXT TYPE STRING,
BEG1 TYPE STRING,
BEG2 TYPE STRING,
BEG3 TYPE STRING,
BEG4 TYPE STRING,
END1 TYPE STRING,
END2 TYPE STRING,
END3 TYPE STRING,
END4 TYPE STRING,
SUM TYPE STRING,
TOT1 TYPE STRING,
TOT2 TYPE STRING,
TOT3 TYPE STRING,
TOT4 TYPE STRING,
TOT TYPE STRING,
SIGN TYPE STRING,
OWPOS TYPE STRING,
TYPE TYPE STRING,
CALCSIGN_XBRL TYPE STRING,
FISCALREQ_XBRL TYPE STRING,
TEXT_XBRL TYPE STRING,
NAME_XBRL TYPE STRING,
BALATTR_XBRL TYPE STRING,END OF T_EKKO_STR.
DATA: WA_RFPOSINF_STR type T_EKKO_STR.

DATA: ld_text TYPE string.

LOOP AT IT_EKKO INTO WA_EKKO.
  MOVE-CORRESPONDING wa_EKKO TO WA_EKKO_STR.
  CONCATENATE: sy-vline
WA_RFPOSINF_STR-KEY sy-vline 
WA_RFPOSINF_STR-TEXT sy-vline 
WA_RFPOSINF_STR-BEG1 sy-vline 
WA_RFPOSINF_STR-BEG2 sy-vline 
WA_RFPOSINF_STR-BEG3 sy-vline 
WA_RFPOSINF_STR-BEG4 sy-vline 
WA_RFPOSINF_STR-END1 sy-vline 
WA_RFPOSINF_STR-END2 sy-vline 
WA_RFPOSINF_STR-END3 sy-vline 
WA_RFPOSINF_STR-END4 sy-vline 
WA_RFPOSINF_STR-SUM sy-vline 
WA_RFPOSINF_STR-TOT1 sy-vline 
WA_RFPOSINF_STR-TOT2 sy-vline 
WA_RFPOSINF_STR-TOT3 sy-vline 
WA_RFPOSINF_STR-TOT4 sy-vline 
WA_RFPOSINF_STR-TOT sy-vline 
WA_RFPOSINF_STR-SIGN sy-vline 
WA_RFPOSINF_STR-OWPOS sy-vline 
WA_RFPOSINF_STR-TYPE sy-vline 
WA_RFPOSINF_STR-CALCSIGN_XBRL sy-vline 
WA_RFPOSINF_STR-FISCALREQ_XBRL sy-vline 
WA_RFPOSINF_STR-TEXT_XBRL sy-vline 
WA_RFPOSINF_STR-NAME_XBRL sy-vline 
WA_RFPOSINF_STR-BALATTR_XBRL sy-vline      INTO ld_text SEPARATED BY SPACE.

*Add any further fields from structure WA_EKKO_STR you want to CONCATENATE...
ENDLOOP.
ENDFORM.