ABAP Select data from SAP table RM06K into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP RM06K 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 RM06K. 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 RM06K 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_RM06K TYPE STANDARD TABLE OF RM06K,
      WA_RM06K TYPE RM06K,
      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: <RM06K> TYPE RM06K.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_RM06K.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM RM06K
  INTO TABLE IT_RM06K.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM RM06K
*  INTO TABLE @DATA(IT_RM06K2).
*--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_RM06K INDEX 1 INTO DATA(WA_RM06K2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_RM06K ASSIGNING <RM06K>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<RM06K>-NAME1 = 1.
<RM06K>-INPUT = 1.
<RM06K>-NAME2 = 1.
<RM06K>-KOLIU = 1.
<RM06K>-PRMEN = 1.

ENDLOOP.

LOOP AT IT_RM06K INTO WA_RM06K.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_RM06K-KOSAV, sy-vline,
  WA_RM06K-VPRIX, sy-vline,
  WA_RM06K-VKSCH, sy-vline,
  WA_RM06K-VPPRO, sy-vline,
  WA_RM06K-VPABS, sy-vline,
  WA_RM06K-VPVOR, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_RM06K 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_RM06K 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_RM06K INTO WA_RM06K.


*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_RM06K_STR, 
NAME1 TYPE STRING,
INPUT TYPE STRING,
NAME2 TYPE STRING,
KOLIU TYPE STRING,
PRMEN TYPE STRING,
KOSAV TYPE STRING,
VPRIX TYPE STRING,
VKSCH TYPE STRING,
VPPRO TYPE STRING,
VPABS TYPE STRING,
VPVOR TYPE STRING,
VPSTF TYPE STRING,
VPDAB TYPE STRING,
VPABD TYPE STRING,
VPBID TYPE STRING,
SIMUK TYPE STRING,
VPINW TYPE STRING,
VPKOW TYPE STRING,
VPDAA TYPE STRING,
KURST TYPE STRING,
KURSD TYPE STRING,
WAERA TYPE STRING,
WAERN TYPE STRING,
KRUND TYPE STRING,
KZUSA TYPE STRING,END OF T_EKKO_STR.
DATA: WA_RM06K_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_RM06K_STR-NAME1 sy-vline 
WA_RM06K_STR-INPUT sy-vline 
WA_RM06K_STR-NAME2 sy-vline 
WA_RM06K_STR-KOLIU sy-vline 
WA_RM06K_STR-PRMEN sy-vline 
WA_RM06K_STR-KOSAV sy-vline 
WA_RM06K_STR-VPRIX sy-vline 
WA_RM06K_STR-VKSCH sy-vline 
WA_RM06K_STR-VPPRO sy-vline 
WA_RM06K_STR-VPABS sy-vline 
WA_RM06K_STR-VPVOR sy-vline 
WA_RM06K_STR-VPSTF sy-vline 
WA_RM06K_STR-VPDAB sy-vline 
WA_RM06K_STR-VPABD sy-vline 
WA_RM06K_STR-VPBID sy-vline 
WA_RM06K_STR-SIMUK sy-vline 
WA_RM06K_STR-VPINW sy-vline 
WA_RM06K_STR-VPKOW sy-vline 
WA_RM06K_STR-VPDAA sy-vline 
WA_RM06K_STR-KURST sy-vline 
WA_RM06K_STR-KURSD sy-vline 
WA_RM06K_STR-WAERA sy-vline 
WA_RM06K_STR-WAERN sy-vline 
WA_RM06K_STR-KRUND sy-vline 
WA_RM06K_STR-KZUSA sy-vline      INTO ld_text SEPARATED BY SPACE.

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