ABAP Select data from SAP table REIS_OR_PO_CAP_DETAIL into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP REIS_OR_PO_CAP_DETAIL 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 REIS_OR_PO_CAP_DETAIL. 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 REIS_OR_PO_CAP_DETAIL 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_REIS_OR_PO_CAP_DETAIL TYPE STANDARD TABLE OF REIS_OR_PO_CAP_DETAIL,
      WA_REIS_OR_PO_CAP_DETAIL TYPE REIS_OR_PO_CAP_DETAIL,
      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: <REIS_OR_PO_CAP_DETAIL> TYPE REIS_OR_PO_CAP_DETAIL.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM REIS_OR_PO_CAP_DETAIL
*  INTO TABLE @DATA(IT_REIS_OR_PO_CAP_DETAIL2).
*--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_REIS_OR_PO_CAP_DETAIL INDEX 1 INTO DATA(WA_REIS_OR_PO_CAP_DETAIL2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<REIS_OR_PO_CAP_DETAIL>-SORTPOS = 1.
<REIS_OR_PO_CAP_DETAIL>-POGUID = 1.
<REIS_OR_PO_CAP_DETAIL>-OCCPOSITION = 1.
<REIS_OR_PO_CAP_DETAIL>-XOCCPOSITION = 1.
<REIS_OR_PO_CAP_DETAIL>-OCCUPANT = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_REIS_OR_PO_CAP_DETAIL-OCCUPANTROLE, sy-vline,
  WA_REIS_OR_PO_CAP_DETAIL-XOCCUPANT, sy-vline,
  WA_REIS_OR_PO_CAP_DETAIL-XOCCUPANTROLE, sy-vline,
  WA_REIS_OR_PO_CAP_DETAIL-POVALIDFROM, sy-vline,
  WA_REIS_OR_PO_CAP_DETAIL-POVALIDTO, sy-vline,
  WA_REIS_OR_PO_CAP_DETAIL-PRICEFACTOR, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_REIS_OR_PO_CAP_DETAIL 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_REIS_OR_PO_CAP_DETAIL 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_REIS_OR_PO_CAP_DETAIL INTO WA_REIS_OR_PO_CAP_DETAIL.


*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.

*Conversion exit ALPHA, internal->external for field OCCPOSITION
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_REIS_OR_PO_CAP_DETAIL-OCCPOSITION
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_REIS_OR_PO_CAP_DETAIL-OCCPOSITION.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field OCCUPANT
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_REIS_OR_PO_CAP_DETAIL-OCCUPANT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_REIS_OR_PO_CAP_DETAIL-OCCUPANT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit REDAT, internal->external for field POVALIDTO
CALL FUNCTION 'CONVERSION_EXIT_REDAT_OUTPUT'
  EXPORTING
    input =                      WA_REIS_OR_PO_CAP_DETAIL-POVALIDTO
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_REIS_OR_PO_CAP_DETAIL-POVALIDTO.
WRITE:/ 'New Value:', ld_input.
ENDFORM. 

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

TYPES: BEGIN OF T_REIS_OR_PO_CAP_DETAIL_STR, 
SORTPOS TYPE STRING,
POGUID TYPE STRING,
OCCPOSITION TYPE STRING,
XOCCPOSITION TYPE STRING,
OCCUPANT TYPE STRING,
OCCUPANTROLE TYPE STRING,
XOCCUPANT TYPE STRING,
XOCCUPANTROLE TYPE STRING,
POVALIDFROM TYPE STRING,
POVALIDTO TYPE STRING,
PRICEFACTOR TYPE STRING,
RSISOCCEXT TYPE STRING,
OCCOBJNR TYPE STRING,
POPLANIGNORE TYPE STRING,
XPO TYPE STRING,
POOBJNRCN TYPE STRING,
IDENTKEYCN TYPE STRING,
OCCQUOTE TYPE STRING,
XOCCQUOTE TYPE STRING,
COLORTAB TYPE STRING,END OF T_EKKO_STR.
DATA: WA_REIS_OR_PO_CAP_DETAIL_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_REIS_OR_PO_CAP_DETAIL_STR-SORTPOS sy-vline 
WA_REIS_OR_PO_CAP_DETAIL_STR-POGUID sy-vline 
WA_REIS_OR_PO_CAP_DETAIL_STR-OCCPOSITION sy-vline 
WA_REIS_OR_PO_CAP_DETAIL_STR-XOCCPOSITION sy-vline 
WA_REIS_OR_PO_CAP_DETAIL_STR-OCCUPANT sy-vline 
WA_REIS_OR_PO_CAP_DETAIL_STR-OCCUPANTROLE sy-vline 
WA_REIS_OR_PO_CAP_DETAIL_STR-XOCCUPANT sy-vline 
WA_REIS_OR_PO_CAP_DETAIL_STR-XOCCUPANTROLE sy-vline 
WA_REIS_OR_PO_CAP_DETAIL_STR-POVALIDFROM sy-vline 
WA_REIS_OR_PO_CAP_DETAIL_STR-POVALIDTO sy-vline 
WA_REIS_OR_PO_CAP_DETAIL_STR-PRICEFACTOR sy-vline 
WA_REIS_OR_PO_CAP_DETAIL_STR-RSISOCCEXT sy-vline 
WA_REIS_OR_PO_CAP_DETAIL_STR-OCCOBJNR sy-vline 
WA_REIS_OR_PO_CAP_DETAIL_STR-POPLANIGNORE sy-vline 
WA_REIS_OR_PO_CAP_DETAIL_STR-XPO sy-vline 
WA_REIS_OR_PO_CAP_DETAIL_STR-POOBJNRCN sy-vline 
WA_REIS_OR_PO_CAP_DETAIL_STR-IDENTKEYCN sy-vline 
WA_REIS_OR_PO_CAP_DETAIL_STR-OCCQUOTE sy-vline 
WA_REIS_OR_PO_CAP_DETAIL_STR-XOCCQUOTE sy-vline 
WA_REIS_OR_PO_CAP_DETAIL_STR-COLORTAB sy-vline      INTO ld_text SEPARATED BY SPACE.

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