ABAP Select data from SAP table RC68A into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP RC68A 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 RC68A. 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 RC68A 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_RC68A TYPE STANDARD TABLE OF RC68A,
      WA_RC68A TYPE RC68A,
      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: <RC68A> TYPE RC68A.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_RC68A.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM RC68A
  INTO TABLE IT_RC68A.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM RC68A
*  INTO TABLE @DATA(IT_RC68A2).
*--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_RC68A INDEX 1 INTO DATA(WA_RC68A2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_RC68A ASSIGNING <RC68A>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<RC68A>-AEDAT = 1.
<RC68A>-AENAM = 1.
<RC68A>-AKTYP = 1.
<RC68A>-APPLICAT = 1.
<RC68A>-ARBPL = 1.

ENDLOOP.

LOOP AT IT_RC68A INTO WA_RC68A.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_RC68A-BEGDA, sy-vline,
  WA_RC68A-DATUB, sy-vline,
  WA_RC68A-DATUV, sy-vline,
  WA_RC68A-DDTEXT01, sy-vline,
  WA_RC68A-ENDDA, sy-vline,
  WA_RC68A-FCT_SPRG, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_RC68A 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_RC68A 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_RC68A INTO WA_RC68A.


*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 KOSTL
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RC68A-KOSTL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RC68A-KOSTL.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field VGEXX
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_RC68A-VGEXX
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RC68A-VGEXX.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field LEINH
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_RC68A-LEINH
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RC68A-LEINH.
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_RC68A_STR, 
AEDAT TYPE STRING,
AENAM TYPE STRING,
AKTYP TYPE STRING,
APPLICAT TYPE STRING,
ARBPL TYPE STRING,
BEGDA TYPE STRING,
DATUB TYPE STRING,
DATUV TYPE STRING,
DDTEXT01 TYPE STRING,
ENDDA TYPE STRING,
FCT_SPRG TYPE STRING,
FLG_DEF TYPE STRING,
FLG_MARKED TYPE STRING,
FLG_OVERVW TYPE STRING,
FLG_NEWPOS TYPE STRING,
FLG_REF TYPE STRING,
FLG_RP_ACT TYPE STRING,
FORXX TYPE STRING,
FORTEXT01 TYPE STRING,
FORTEXT02 TYPE STRING,
FORTEXT03 TYPE STRING,
FORTEXT04 TYPE STRING,
GRUPP TYPE STRING,
KAPART TYPE STRING,
KAPNAME TYPE STRING,
KAPNAMEP TYPE STRING,
KAPTEXT TYPE STRING,
KOKRS TYPE STRING,
KOSTL TYPE STRING,
KTEXT TYPE STRING,
LARXX TYPE STRING,
LTXKZ TYPE STRING,
OBJID TYPE STRING,
PARSOURCE TYPE STRING,
PARTXT01 TYPE STRING,
PARTXT02 TYPE STRING,
PARTXT03 TYPE STRING,
PARTXT04 TYPE STRING,
PARTXT05 TYPE STRING,
PARTXT06 TYPE STRING,
REF_ARBPL TYPE STRING,
REF_SHORT TYPE STRING,
REF_WERKS TYPE STRING,
SELKZ TYPE STRING,
SHORT TYPE STRING,
TEXT20 TYPE STRING,
VERTLTXT01 TYPE STRING,
VERTLTXT02 TYPE STRING,
VERTLTXT03 TYPE STRING,
VERTLTXT04 TYPE STRING,
VERWE TYPE STRING,
VGEXX TYPE STRING,
VGMXX TYPE STRING,
WERKS TYPE STRING,
ZGRXX TYPE STRING,
ACTXKT TYPE STRING,
LEINH TYPE STRING,
BDEXX TYPE STRING,
SAKLXX TYPE STRING,
ALL_SCREENS TYPE STRING,END OF T_EKKO_STR.
DATA: WA_RC68A_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_RC68A_STR-AEDAT sy-vline 
WA_RC68A_STR-AENAM sy-vline 
WA_RC68A_STR-AKTYP sy-vline 
WA_RC68A_STR-APPLICAT sy-vline 
WA_RC68A_STR-ARBPL sy-vline 
WA_RC68A_STR-BEGDA sy-vline 
WA_RC68A_STR-DATUB sy-vline 
WA_RC68A_STR-DATUV sy-vline 
WA_RC68A_STR-DDTEXT01 sy-vline 
WA_RC68A_STR-ENDDA sy-vline 
WA_RC68A_STR-FCT_SPRG sy-vline 
WA_RC68A_STR-FLG_DEF sy-vline 
WA_RC68A_STR-FLG_MARKED sy-vline 
WA_RC68A_STR-FLG_OVERVW sy-vline 
WA_RC68A_STR-FLG_NEWPOS sy-vline 
WA_RC68A_STR-FLG_REF sy-vline 
WA_RC68A_STR-FLG_RP_ACT sy-vline 
WA_RC68A_STR-FORXX sy-vline 
WA_RC68A_STR-FORTEXT01 sy-vline 
WA_RC68A_STR-FORTEXT02 sy-vline 
WA_RC68A_STR-FORTEXT03 sy-vline 
WA_RC68A_STR-FORTEXT04 sy-vline 
WA_RC68A_STR-GRUPP sy-vline 
WA_RC68A_STR-KAPART sy-vline 
WA_RC68A_STR-KAPNAME sy-vline 
WA_RC68A_STR-KAPNAMEP sy-vline 
WA_RC68A_STR-KAPTEXT sy-vline 
WA_RC68A_STR-KOKRS sy-vline 
WA_RC68A_STR-KOSTL sy-vline 
WA_RC68A_STR-KTEXT sy-vline 
WA_RC68A_STR-LARXX sy-vline 
WA_RC68A_STR-LTXKZ sy-vline 
WA_RC68A_STR-OBJID sy-vline 
WA_RC68A_STR-PARSOURCE sy-vline 
WA_RC68A_STR-PARTXT01 sy-vline 
WA_RC68A_STR-PARTXT02 sy-vline 
WA_RC68A_STR-PARTXT03 sy-vline 
WA_RC68A_STR-PARTXT04 sy-vline 
WA_RC68A_STR-PARTXT05 sy-vline 
WA_RC68A_STR-PARTXT06 sy-vline 
WA_RC68A_STR-REF_ARBPL sy-vline 
WA_RC68A_STR-REF_SHORT sy-vline 
WA_RC68A_STR-REF_WERKS sy-vline 
WA_RC68A_STR-SELKZ sy-vline 
WA_RC68A_STR-SHORT sy-vline 
WA_RC68A_STR-TEXT20 sy-vline 
WA_RC68A_STR-VERTLTXT01 sy-vline 
WA_RC68A_STR-VERTLTXT02 sy-vline 
WA_RC68A_STR-VERTLTXT03 sy-vline 
WA_RC68A_STR-VERTLTXT04 sy-vline 
WA_RC68A_STR-VERWE sy-vline 
WA_RC68A_STR-VGEXX sy-vline 
WA_RC68A_STR-VGMXX sy-vline 
WA_RC68A_STR-WERKS sy-vline 
WA_RC68A_STR-ZGRXX sy-vline 
WA_RC68A_STR-ACTXKT sy-vline 
WA_RC68A_STR-LEINH sy-vline 
WA_RC68A_STR-BDEXX sy-vline 
WA_RC68A_STR-SAKLXX sy-vline 
WA_RC68A_STR-ALL_SCREENS sy-vline      INTO ld_text SEPARATED BY SPACE.

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