ABAP Select data from SAP table RM06B into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP RM06B 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 RM06B. 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 RM06B 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_RM06B TYPE STANDARD TABLE OF RM06B,
      WA_RM06B TYPE RM06B,
      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: <RM06B> TYPE RM06B.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_RM06B.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM RM06B
  INTO TABLE IT_RM06B.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM RM06B
*  INTO TABLE @DATA(IT_RM06B2).
*--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_RM06B INDEX 1 INTO DATA(WA_RM06B2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_RM06B ASSIGNING <RM06B>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<RM06B>-PSTYP = 1.
<RM06B>-EPSTP = 1.
<RM06B>-WERKS = 1.
<RM06B>-LGORT = 1.
<RM06B>-EKGRP = 1.

ENDLOOP.

LOOP AT IT_RM06B INTO WA_RM06B.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_RM06B-BSART, sy-vline,
  WA_RM06B-REFBN, sy-vline,
  WA_RM06B-REFPV, sy-vline,
  WA_RM06B-REFPS, sy-vline,
  WA_RM06B-REFPB, sy-vline,
  WA_RM06B-BNFPO, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_RM06B 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_RM06B 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_RM06B INTO WA_RM06B.


*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 REFBN
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RM06B-REFBN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RM06B-REFBN.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field MEIN1
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_RM06B-MEIN1
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RM06B-MEIN1.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field MEIN2
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_RM06B-MEIN2
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RM06B-MEIN2.
WRITE:/ 'New Value:', ld_input.

*Conversion exit NUMCV, internal->external for field VORNR
CALL FUNCTION 'CONVERSION_EXIT_NUMCV_OUTPUT'
  EXPORTING
    input =                      WA_RM06B-VORNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RM06B-VORNR.
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_RM06B_STR, 
PSTYP TYPE STRING,
EPSTP TYPE STRING,
WERKS TYPE STRING,
LGORT TYPE STRING,
EKGRP TYPE STRING,
BSART TYPE STRING,
REFBN TYPE STRING,
REFPV TYPE STRING,
REFPS TYPE STRING,
REFPB TYPE STRING,
BNFPO TYPE STRING,
SELKZ TYPE STRING,
MEIN1 TYPE STRING,
MEIN2 TYPE STRING,
MKNTM TYPE STRING,
FRGAB TYPE STRING,
ANZAB TYPE STRING,
ANZFV TYPE STRING,
ANZFR TYPE STRING,
ANZEF TYPE STRING,
MKNTW TYPE STRING,
ANZFM TYPE STRING,
ANZFA TYPE STRING,
ANZFB TYPE STRING,
OLDZL TYPE STRING,
EEIND TYPE STRING,
LPEIN TYPE STRING,
TEXT1 TYPE STRING,
FORM1 TYPE STRING,
FORM2 TYPE STRING,
LTEX1 TYPE STRING,
LTEX2 TYPE STRING,
KZLTX TYPE STRING,
FIXIE TYPE STRING,
SLPOV TYPE STRING,
SLPOB TYPE STRING,
STATX TYPE STRING,
ESTTX TYPE STRING,
LOETX TYPE STRING,
ERWSE TYPE STRING,
PZAHL TYPE STRING,
KZZUO TYPE STRING,
RLFDT TYPE STRING,
FIXTX TYPE STRING,
ERGKZ TYPE STRING,
GSWRT TYPE STRING,
FRGUP TYPE STRING,
COMMITMENT TYPE STRING,
SUMLIMIT TYPE STRING,
SUMNOLIM TYPE STRING,
ACTVALUE TYPE STRING,
SRV_EXIST TYPE STRING,
LIM_EXIST TYPE STRING,
SRV_VALUE TYPE STRING,
TCSELFLAG TYPE STRING,
ERDAT TYPE STRING,
VORNR TYPE STRING,END OF T_EKKO_STR.
DATA: WA_RM06B_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_RM06B_STR-PSTYP sy-vline 
WA_RM06B_STR-EPSTP sy-vline 
WA_RM06B_STR-WERKS sy-vline 
WA_RM06B_STR-LGORT sy-vline 
WA_RM06B_STR-EKGRP sy-vline 
WA_RM06B_STR-BSART sy-vline 
WA_RM06B_STR-REFBN sy-vline 
WA_RM06B_STR-REFPV sy-vline 
WA_RM06B_STR-REFPS sy-vline 
WA_RM06B_STR-REFPB sy-vline 
WA_RM06B_STR-BNFPO sy-vline 
WA_RM06B_STR-SELKZ sy-vline 
WA_RM06B_STR-MEIN1 sy-vline 
WA_RM06B_STR-MEIN2 sy-vline 
WA_RM06B_STR-MKNTM sy-vline 
WA_RM06B_STR-FRGAB sy-vline 
WA_RM06B_STR-ANZAB sy-vline 
WA_RM06B_STR-ANZFV sy-vline 
WA_RM06B_STR-ANZFR sy-vline 
WA_RM06B_STR-ANZEF sy-vline 
WA_RM06B_STR-MKNTW sy-vline 
WA_RM06B_STR-ANZFM sy-vline 
WA_RM06B_STR-ANZFA sy-vline 
WA_RM06B_STR-ANZFB sy-vline 
WA_RM06B_STR-OLDZL sy-vline 
WA_RM06B_STR-EEIND sy-vline 
WA_RM06B_STR-LPEIN sy-vline 
WA_RM06B_STR-TEXT1 sy-vline 
WA_RM06B_STR-FORM1 sy-vline 
WA_RM06B_STR-FORM2 sy-vline 
WA_RM06B_STR-LTEX1 sy-vline 
WA_RM06B_STR-LTEX2 sy-vline 
WA_RM06B_STR-KZLTX sy-vline 
WA_RM06B_STR-FIXIE sy-vline 
WA_RM06B_STR-SLPOV sy-vline 
WA_RM06B_STR-SLPOB sy-vline 
WA_RM06B_STR-STATX sy-vline 
WA_RM06B_STR-ESTTX sy-vline 
WA_RM06B_STR-LOETX sy-vline 
WA_RM06B_STR-ERWSE sy-vline 
WA_RM06B_STR-PZAHL sy-vline 
WA_RM06B_STR-KZZUO sy-vline 
WA_RM06B_STR-RLFDT sy-vline 
WA_RM06B_STR-FIXTX sy-vline 
WA_RM06B_STR-ERGKZ sy-vline 
WA_RM06B_STR-GSWRT sy-vline 
WA_RM06B_STR-FRGUP sy-vline 
WA_RM06B_STR-COMMITMENT sy-vline 
WA_RM06B_STR-SUMLIMIT sy-vline 
WA_RM06B_STR-SUMNOLIM sy-vline 
WA_RM06B_STR-ACTVALUE sy-vline 
WA_RM06B_STR-SRV_EXIST sy-vline 
WA_RM06B_STR-LIM_EXIST sy-vline 
WA_RM06B_STR-SRV_VALUE sy-vline 
WA_RM06B_STR-TCSELFLAG sy-vline 
WA_RM06B_STR-ERDAT sy-vline 
WA_RM06B_STR-VORNR sy-vline      INTO ld_text SEPARATED BY SPACE.

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