ABAP Select data from SAP table HUM_REPACK into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM HUM_REPACK
*  INTO TABLE @DATA(IT_HUM_REPACK2).
*--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_HUM_REPACK INDEX 1 INTO DATA(WA_HUM_REPACK2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<HUM_REPACK>-SOURCEHU = 1.
<HUM_REPACK>-DESTHU = 1.
<HUM_REPACK>-PACKHU = 1.
<HUM_REPACK>-PACK_QTY = 1.
<HUM_REPACK>-BASE_UOM = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_HUM_REPACK-MATERIAL, sy-vline,
  WA_HUM_REPACK-BATCH, sy-vline,
  WA_HUM_REPACK-PLANT, sy-vline,
  WA_HUM_REPACK-STGE_LOC, sy-vline,
  WA_HUM_REPACK-STOCK_CAT, sy-vline,
  WA_HUM_REPACK-SPEC_STOCK, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_HUM_REPACK 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_HUM_REPACK 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_HUM_REPACK INTO WA_HUM_REPACK.


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

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

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

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

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

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

*Conversion exit CUNIT, internal->external for field /CWM/VEMEH
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_HUM_REPACK-/CWM/VEMEH
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_HUM_REPACK-/CWM/VEMEH.
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_HUM_REPACK_STR, 
SOURCEHU TYPE STRING,
DESTHU TYPE STRING,
PACKHU TYPE STRING,
PACK_QTY TYPE STRING,
BASE_UOM TYPE STRING,
MATERIAL TYPE STRING,
BATCH TYPE STRING,
PLANT TYPE STRING,
STGE_LOC TYPE STRING,
STOCK_CAT TYPE STRING,
SPEC_STOCK TYPE STRING,
SP_STCK_NO TYPE STRING,
DELIV_NUMB TYPE STRING,
DELIV_ITEM TYPE STRING,
STOCK_SEGMENT TYPE STRING,
/CWM/VEMNG TYPE STRING,
/CWM/VEMEH TYPE STRING,
WRF_CHARSTC1 TYPE STRING,
WRF_CHARSTC2 TYPE STRING,
WRF_CHARSTC3 TYPE STRING,END OF T_EKKO_STR.
DATA: WA_HUM_REPACK_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_HUM_REPACK_STR-SOURCEHU sy-vline 
WA_HUM_REPACK_STR-DESTHU sy-vline 
WA_HUM_REPACK_STR-PACKHU sy-vline 
WA_HUM_REPACK_STR-PACK_QTY sy-vline 
WA_HUM_REPACK_STR-BASE_UOM sy-vline 
WA_HUM_REPACK_STR-MATERIAL sy-vline 
WA_HUM_REPACK_STR-BATCH sy-vline 
WA_HUM_REPACK_STR-PLANT sy-vline 
WA_HUM_REPACK_STR-STGE_LOC sy-vline 
WA_HUM_REPACK_STR-STOCK_CAT sy-vline 
WA_HUM_REPACK_STR-SPEC_STOCK sy-vline 
WA_HUM_REPACK_STR-SP_STCK_NO sy-vline 
WA_HUM_REPACK_STR-DELIV_NUMB sy-vline 
WA_HUM_REPACK_STR-DELIV_ITEM sy-vline 
WA_HUM_REPACK_STR-STOCK_SEGMENT sy-vline 
WA_HUM_REPACK_STR-/CWM/VEMNG sy-vline 
WA_HUM_REPACK_STR-/CWM/VEMEH sy-vline 
WA_HUM_REPACK_STR-WRF_CHARSTC1 sy-vline 
WA_HUM_REPACK_STR-WRF_CHARSTC2 sy-vline 
WA_HUM_REPACK_STR-WRF_CHARSTC3 sy-vline      INTO ld_text SEPARATED BY SPACE.

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