ABAP Select data from SAP table /SCWM/S_RF_INVENTORY_HEAD into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP /SCWM/S_RF_INVENTORY_HEAD 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 /SCWM/S_RF_INVENTORY_HEAD. 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 /SCWM/S_RF_INVENTORY_HEAD 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_/SCWM/S_RF_INVENTORY_HEAD TYPE STANDARD TABLE OF /SCWM/S_RF_INVENTORY_HEAD,
      WA_/SCWM/S_RF_INVENTORY_HEAD TYPE /SCWM/S_RF_INVENTORY_HEAD,
      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: </SCWM/S_RF_INVENTORY_HEAD> TYPE /SCWM/S_RF_INVENTORY_HEAD.

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

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM /SCWM/S_RF_INVENTORY_HEAD
  INTO TABLE IT_/SCWM/S_RF_INVENTORY_HEAD.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM /SCWM/S_RF_INVENTORY_HEAD
*  INTO TABLE @DATA(IT_/SCWM/S_RF_INVENTORY_HEAD2).
*--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_/SCWM/S_RF_INVENTORY_HEAD INDEX 1 INTO DATA(WA_/SCWM/S_RF_INVENTORY_HEAD2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_/SCWM/S_RF_INVENTORY_HEAD ASSIGNING </SCWM/S_RF_INVENTORY_HEAD>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
</SCWM/S_RF_INVENTORY_HEAD>-GUID_DOC = 1.
</SCWM/S_RF_INVENTORY_HEAD>-ITEM_NO = 1.
</SCWM/S_RF_INVENTORY_HEAD>-LINE_IDX = 1.
</SCWM/S_RF_INVENTORY_HEAD>-ITEM_TYPE = 1.
</SCWM/S_RF_INVENTORY_HEAD>-INT_NUMBER = 1.

ENDLOOP.

LOOP AT IT_/SCWM/S_RF_INVENTORY_HEAD INTO WA_/SCWM/S_RF_INVENTORY_HEAD.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_/SCWM/S_RF_INVENTORY_HEAD-WHORD, sy-vline,
  WA_/SCWM/S_RF_INVENTORY_HEAD-LGPLA, sy-vline,
  WA_/SCWM/S_RF_INVENTORY_HEAD-IND_RESOURCE, sy-vline,
  WA_/SCWM/S_RF_INVENTORY_HEAD-LGPLA_SEL, sy-vline,
  WA_/SCWM/S_RF_INVENTORY_HEAD-LGPLA_VERIF, sy-vline,
  WA_/SCWM/S_RF_INVENTORY_HEAD-HUIDENT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_/SCWM/S_RF_INVENTORY_HEAD 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_/SCWM/S_RF_INVENTORY_HEAD 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_/SCWM/S_RF_INVENTORY_HEAD INTO WA_/SCWM/S_RF_INVENTORY_HEAD.


*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 ALPH0, internal->external for field WHORD
CALL FUNCTION 'CONVERSION_EXIT_ALPH0_OUTPUT'
  EXPORTING
    input =                      WA_/SCWM/S_RF_INVENTORY_HEAD-WHORD
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/SCWM/S_RF_INVENTORY_HEAD-WHORD.
WRITE:/ 'New Value:', ld_input.

*Conversion exit HUID, internal->external for field HUIDENT
CALL FUNCTION 'CONVERSION_EXIT_HUID_OUTPUT'
  EXPORTING
    input =                      WA_/SCWM/S_RF_INVENTORY_HEAD-HUIDENT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/SCWM/S_RF_INVENTORY_HEAD-HUIDENT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit HUID, internal->external for field HUIDENT_SEL
CALL FUNCTION 'CONVERSION_EXIT_HUID_OUTPUT'
  EXPORTING
    input =                      WA_/SCWM/S_RF_INVENTORY_HEAD-HUIDENT_SEL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/SCWM/S_RF_INVENTORY_HEAD-HUIDENT_SEL.
WRITE:/ 'New Value:', ld_input.

*Conversion exit MDLPD, internal->external for field MATID_TO_COUNT
CALL FUNCTION 'CONVERSION_EXIT_MDLPD_OUTPUT'
  EXPORTING
    input =                      WA_/SCWM/S_RF_INVENTORY_HEAD-MATID_TO_COUNT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/SCWM/S_RF_INVENTORY_HEAD-MATID_TO_COUNT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit MATN1, internal->external for field MATNR_TO_VERIF
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_/SCWM/S_RF_INVENTORY_HEAD-MATNR_TO_VERIF
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/SCWM/S_RF_INVENTORY_HEAD-MATNR_TO_VERIF.
WRITE:/ 'New Value:', ld_input.

*Conversion exit MDLPS, internal->external for field MATNR_TO_COUNT
CALL FUNCTION 'CONVERSION_EXIT_MDLPS_OUTPUT'
  EXPORTING
    input =                      WA_/SCWM/S_RF_INVENTORY_HEAD-MATNR_TO_COUNT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/SCWM/S_RF_INVENTORY_HEAD-MATNR_TO_COUNT.
WRITE:/ 'New Value:', ld_input.

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

*Conversion exit RFHU, internal->external for field RFHU
CALL FUNCTION 'CONVERSION_EXIT_RFHU_OUTPUT'
  EXPORTING
    input =                      WA_/SCWM/S_RF_INVENTORY_HEAD-RFHU
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/SCWM/S_RF_INVENTORY_HEAD-RFHU.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPH0, internal->external for field DOC_NUMBER
CALL FUNCTION 'CONVERSION_EXIT_ALPH0_OUTPUT'
  EXPORTING
    input =                      WA_/SCWM/S_RF_INVENTORY_HEAD-DOC_NUMBER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/SCWM/S_RF_INVENTORY_HEAD-DOC_NUMBER.
WRITE:/ 'New Value:', ld_input.

*Conversion exit GJAHR, internal->external for field DOC_YEAR
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_/SCWM/S_RF_INVENTORY_HEAD-DOC_YEAR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/SCWM/S_RF_INVENTORY_HEAD-DOC_YEAR.
WRITE:/ 'New Value:', ld_input.

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

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

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

*Conversion exit MATN1, internal->external for field HU_PMAT
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_/SCWM/S_RF_INVENTORY_HEAD-HU_PMAT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/SCWM/S_RF_INVENTORY_HEAD-HU_PMAT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CNTRF, internal->external for field COUNT_REFERENCE
CALL FUNCTION 'CONVERSION_EXIT_CNTRF_OUTPUT'
  EXPORTING
    input =                      WA_/SCWM/S_RF_INVENTORY_HEAD-COUNT_REFERENCE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/SCWM/S_RF_INVENTORY_HEAD-COUNT_REFERENCE.
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_/SCWM/S_RF_INVENTORY_HEAD_STR, 
GUID_DOC TYPE STRING,
ITEM_NO TYPE STRING,
LINE_IDX TYPE STRING,
ITEM_TYPE TYPE STRING,
INT_NUMBER TYPE STRING,
WHORD TYPE STRING,
LGPLA TYPE STRING,
IND_RESOURCE TYPE STRING,
LGPLA_SEL TYPE STRING,
LGPLA_VERIF TYPE STRING,
HUIDENT TYPE STRING,
HUIDENT_SEL TYPE STRING,
HUIDENT_NESTED TYPE STRING,
REASON TYPE STRING,
PRIORITY TYPE STRING,
REF_NUMBER TYPE STRING,
LEVEL_NO TYPE STRING,
IND_DOC_TYPE TYPE STRING,
IND_DELIVERY TYPE STRING,
MATID_TO_COUNT TYPE STRING,
MATNR_TO_VERIF TYPE STRING,
MATNR_TO_COUNT TYPE STRING,
ENTITLED_TO_COUNT TYPE STRING,
IDPLATE_TO_COUNT TYPE STRING,
RETURN_SAME_LEVEL TYPE STRING,
FLG_MAT TYPE STRING,
PIL_ALLOWED TYPE STRING,
RFHU TYPE STRING,
PI_AREA TYPE STRING,
DOC_NUMBER TYPE STRING,
DOC_TYPE TYPE STRING,
DOC_YEAR TYPE STRING,
BLOCK_IND TYPE STRING,
DOC_ACT_FLAG TYPE STRING,
CREATE_USERID TYPE STRING,
NOHU TYPE STRING,
NOHU_TOTAL TYPE STRING,
NO_FHUITM TYPE STRING,
UOM_HUITM TYPE STRING,
NO_PHUITM TYPE STRING,
UOM_PHUITM TYPE STRING,
NO_PHUITM_TOTAL TYPE STRING,
NO_HUITM_TOTAL TYPE STRING,
UOM_HUITM_TOTAL TYPE STRING,
HU_PMAT TYPE STRING,
HU_TYPE TYPE STRING,
COUNT_REFERENCE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_/SCWM/S_RF_INVENTORY_HEAD_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_/SCWM/S_RF_INVENTORY_HEAD_STR-GUID_DOC sy-vline 
WA_/SCWM/S_RF_INVENTORY_HEAD_STR-ITEM_NO sy-vline 
WA_/SCWM/S_RF_INVENTORY_HEAD_STR-LINE_IDX sy-vline 
WA_/SCWM/S_RF_INVENTORY_HEAD_STR-ITEM_TYPE sy-vline 
WA_/SCWM/S_RF_INVENTORY_HEAD_STR-INT_NUMBER sy-vline 
WA_/SCWM/S_RF_INVENTORY_HEAD_STR-WHORD sy-vline 
WA_/SCWM/S_RF_INVENTORY_HEAD_STR-LGPLA sy-vline 
WA_/SCWM/S_RF_INVENTORY_HEAD_STR-IND_RESOURCE sy-vline 
WA_/SCWM/S_RF_INVENTORY_HEAD_STR-LGPLA_SEL sy-vline 
WA_/SCWM/S_RF_INVENTORY_HEAD_STR-LGPLA_VERIF sy-vline 
WA_/SCWM/S_RF_INVENTORY_HEAD_STR-HUIDENT sy-vline 
WA_/SCWM/S_RF_INVENTORY_HEAD_STR-HUIDENT_SEL sy-vline 
WA_/SCWM/S_RF_INVENTORY_HEAD_STR-HUIDENT_NESTED sy-vline 
WA_/SCWM/S_RF_INVENTORY_HEAD_STR-REASON sy-vline 
WA_/SCWM/S_RF_INVENTORY_HEAD_STR-PRIORITY sy-vline 
WA_/SCWM/S_RF_INVENTORY_HEAD_STR-REF_NUMBER sy-vline 
WA_/SCWM/S_RF_INVENTORY_HEAD_STR-LEVEL_NO sy-vline 
WA_/SCWM/S_RF_INVENTORY_HEAD_STR-IND_DOC_TYPE sy-vline 
WA_/SCWM/S_RF_INVENTORY_HEAD_STR-IND_DELIVERY sy-vline 
WA_/SCWM/S_RF_INVENTORY_HEAD_STR-MATID_TO_COUNT sy-vline 
WA_/SCWM/S_RF_INVENTORY_HEAD_STR-MATNR_TO_VERIF sy-vline 
WA_/SCWM/S_RF_INVENTORY_HEAD_STR-MATNR_TO_COUNT sy-vline 
WA_/SCWM/S_RF_INVENTORY_HEAD_STR-ENTITLED_TO_COUNT sy-vline 
WA_/SCWM/S_RF_INVENTORY_HEAD_STR-IDPLATE_TO_COUNT sy-vline 
WA_/SCWM/S_RF_INVENTORY_HEAD_STR-RETURN_SAME_LEVEL sy-vline 
WA_/SCWM/S_RF_INVENTORY_HEAD_STR-FLG_MAT sy-vline 
WA_/SCWM/S_RF_INVENTORY_HEAD_STR-PIL_ALLOWED sy-vline 
WA_/SCWM/S_RF_INVENTORY_HEAD_STR-RFHU sy-vline 
WA_/SCWM/S_RF_INVENTORY_HEAD_STR-PI_AREA sy-vline 
WA_/SCWM/S_RF_INVENTORY_HEAD_STR-DOC_NUMBER sy-vline 
WA_/SCWM/S_RF_INVENTORY_HEAD_STR-DOC_TYPE sy-vline 
WA_/SCWM/S_RF_INVENTORY_HEAD_STR-DOC_YEAR sy-vline 
WA_/SCWM/S_RF_INVENTORY_HEAD_STR-BLOCK_IND sy-vline 
WA_/SCWM/S_RF_INVENTORY_HEAD_STR-DOC_ACT_FLAG sy-vline 
WA_/SCWM/S_RF_INVENTORY_HEAD_STR-CREATE_USERID sy-vline 
WA_/SCWM/S_RF_INVENTORY_HEAD_STR-NOHU sy-vline 
WA_/SCWM/S_RF_INVENTORY_HEAD_STR-NOHU_TOTAL sy-vline 
WA_/SCWM/S_RF_INVENTORY_HEAD_STR-NO_FHUITM sy-vline 
WA_/SCWM/S_RF_INVENTORY_HEAD_STR-UOM_HUITM sy-vline 
WA_/SCWM/S_RF_INVENTORY_HEAD_STR-NO_PHUITM sy-vline 
WA_/SCWM/S_RF_INVENTORY_HEAD_STR-UOM_PHUITM sy-vline 
WA_/SCWM/S_RF_INVENTORY_HEAD_STR-NO_PHUITM_TOTAL sy-vline 
WA_/SCWM/S_RF_INVENTORY_HEAD_STR-NO_HUITM_TOTAL sy-vline 
WA_/SCWM/S_RF_INVENTORY_HEAD_STR-UOM_HUITM_TOTAL sy-vline 
WA_/SCWM/S_RF_INVENTORY_HEAD_STR-HU_PMAT sy-vline 
WA_/SCWM/S_RF_INVENTORY_HEAD_STR-HU_TYPE sy-vline 
WA_/SCWM/S_RF_INVENTORY_HEAD_STR-COUNT_REFERENCE sy-vline      INTO ld_text SEPARATED BY SPACE.

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