ABAP Select data from SAP table BAPI_MARM_GA into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM BAPI_MARM_GA
*  INTO TABLE @DATA(IT_BAPI_MARM_GA2).
*--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_BAPI_MARM_GA INDEX 1 INTO DATA(WA_BAPI_MARM_GA2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<BAPI_MARM_GA>-ALT_UNIT = 1.
<BAPI_MARM_GA>-ALT_UNIT_ISO = 1.
<BAPI_MARM_GA>-NUMERATOR = 1.
<BAPI_MARM_GA>-DENOMINATR = 1.
<BAPI_MARM_GA>-EAN_UPC = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_BAPI_MARM_GA-EAN_CAT, sy-vline,
  WA_BAPI_MARM_GA-LENGTH, sy-vline,
  WA_BAPI_MARM_GA-WIDTH, sy-vline,
  WA_BAPI_MARM_GA-HEIGHT, sy-vline,
  WA_BAPI_MARM_GA-UNIT_DIM, sy-vline,
  WA_BAPI_MARM_GA-UNIT_DIM_ISO, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_BAPI_MARM_GA 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_BAPI_MARM_GA 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_BAPI_MARM_GA INTO WA_BAPI_MARM_GA.


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

*Conversion exit EAN11, internal->external for field EAN_UPC
CALL FUNCTION 'CONVERSION_EXIT_EAN11_OUTPUT'
  EXPORTING
    input =                      WA_BAPI_MARM_GA-EAN_UPC
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_BAPI_MARM_GA-EAN_UPC.
WRITE:/ 'New Value:', ld_input.

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

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

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

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

*Conversion exit ATINN, internal->external for field INTERNAL_CHAR
CALL FUNCTION 'CONVERSION_EXIT_ATINN_OUTPUT'
  EXPORTING
    input =                      WA_BAPI_MARM_GA-INTERNAL_CHAR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_BAPI_MARM_GA-INTERNAL_CHAR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field CHAR_UNIT
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_BAPI_MARM_GA-CHAR_UNIT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_BAPI_MARM_GA-CHAR_UNIT.
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_BAPI_MARM_GA_STR, 
ALT_UNIT TYPE STRING,
ALT_UNIT_ISO TYPE STRING,
NUMERATOR TYPE STRING,
DENOMINATR TYPE STRING,
EAN_UPC TYPE STRING,
EAN_CAT TYPE STRING,
LENGTH TYPE STRING,
WIDTH TYPE STRING,
HEIGHT TYPE STRING,
UNIT_DIM TYPE STRING,
UNIT_DIM_ISO TYPE STRING,
VOLUME TYPE STRING,
VOLUMEUNIT TYPE STRING,
VOLUMEUNIT_ISO TYPE STRING,
GROSS_WT TYPE STRING,
UNIT_OF_WT TYPE STRING,
UNIT_OF_WT_ISO TYPE STRING,
SUB_UOM TYPE STRING,
SUB_UOM_ISO TYPE STRING,
INTERNAL_CHAR TYPE STRING,
UOMSORTNUMBER TYPE STRING,
LEADINGUOM TYPE STRING,
VALUEDUOM TYPE STRING,
CHAR_UNIT TYPE STRING,
CHAR_UNIT_ISO TYPE STRING,
GTIN_VARIANT TYPE STRING,
NET_WEIGHT TYPE STRING,
ME_ANZ_SUB TYPE STRING,
EWM_CW_UOM_TYPE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_BAPI_MARM_GA_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_BAPI_MARM_GA_STR-ALT_UNIT sy-vline 
WA_BAPI_MARM_GA_STR-ALT_UNIT_ISO sy-vline 
WA_BAPI_MARM_GA_STR-NUMERATOR sy-vline 
WA_BAPI_MARM_GA_STR-DENOMINATR sy-vline 
WA_BAPI_MARM_GA_STR-EAN_UPC sy-vline 
WA_BAPI_MARM_GA_STR-EAN_CAT sy-vline 
WA_BAPI_MARM_GA_STR-LENGTH sy-vline 
WA_BAPI_MARM_GA_STR-WIDTH sy-vline 
WA_BAPI_MARM_GA_STR-HEIGHT sy-vline 
WA_BAPI_MARM_GA_STR-UNIT_DIM sy-vline 
WA_BAPI_MARM_GA_STR-UNIT_DIM_ISO sy-vline 
WA_BAPI_MARM_GA_STR-VOLUME sy-vline 
WA_BAPI_MARM_GA_STR-VOLUMEUNIT sy-vline 
WA_BAPI_MARM_GA_STR-VOLUMEUNIT_ISO sy-vline 
WA_BAPI_MARM_GA_STR-GROSS_WT sy-vline 
WA_BAPI_MARM_GA_STR-UNIT_OF_WT sy-vline 
WA_BAPI_MARM_GA_STR-UNIT_OF_WT_ISO sy-vline 
WA_BAPI_MARM_GA_STR-SUB_UOM sy-vline 
WA_BAPI_MARM_GA_STR-SUB_UOM_ISO sy-vline 
WA_BAPI_MARM_GA_STR-INTERNAL_CHAR sy-vline 
WA_BAPI_MARM_GA_STR-UOMSORTNUMBER sy-vline 
WA_BAPI_MARM_GA_STR-LEADINGUOM sy-vline 
WA_BAPI_MARM_GA_STR-VALUEDUOM sy-vline 
WA_BAPI_MARM_GA_STR-CHAR_UNIT sy-vline 
WA_BAPI_MARM_GA_STR-CHAR_UNIT_ISO sy-vline 
WA_BAPI_MARM_GA_STR-GTIN_VARIANT sy-vline 
WA_BAPI_MARM_GA_STR-NET_WEIGHT sy-vline 
WA_BAPI_MARM_GA_STR-ME_ANZ_SUB sy-vline 
WA_BAPI_MARM_GA_STR-EWM_CW_UOM_TYPE sy-vline      INTO ld_text SEPARATED BY SPACE.

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