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

Get Example source ABAP code based on a different SAP table
  Get ABAP code

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM /SCWM/S_PACKSPEC_NESTED
*  INTO TABLE @DATA(IT_/SCWM/S_PACKSPEC_NESTED2).
*--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_PACKSPEC_NESTED INDEX 1 INTO DATA(WA_/SCWM/S_PACKSPEC_NESTED2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
</SCWM/S_PACKSPEC_NESTED>-CONTENT = 1.
</SCWM/S_PACKSPEC_NESTED>-GUID = 1.
</SCWM/S_PACKSPEC_NESTED>-AENNR = 1.
</SCWM/S_PACKSPEC_NESTED>-CONTENT_SEQ = 1.
</SCWM/S_PACKSPEC_NESTED>-MATID = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_/SCWM/S_PACKSPEC_NESTED-SUB_PS, sy-vline,
  WA_/SCWM/S_PACKSPEC_NESTED-UNIT, sy-vline,
  WA_/SCWM/S_PACKSPEC_NESTED-QUAN, sy-vline,
  WA_/SCWM/S_PACKSPEC_NESTED-MEINS, sy-vline,
  WA_/SCWM/S_PACKSPEC_NESTED-REFMIX, sy-vline,
  WA_/SCWM/S_PACKSPEC_NESTED-BATCHMIX, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_/SCWM/S_PACKSPEC_NESTED 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_PACKSPEC_NESTED 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_PACKSPEC_NESTED INTO WA_/SCWM/S_PACKSPEC_NESTED.


*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 CONTENT_SEQ
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_/SCWM/S_PACKSPEC_NESTED-CONTENT_SEQ
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/SCWM/S_PACKSPEC_NESTED-CONTENT_SEQ.
WRITE:/ 'New Value:', ld_input.

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

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

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

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

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

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

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

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

*Conversion exit CUNIT, internal->external for field SUBPS_VOLUME_UNIT
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_/SCWM/S_PACKSPEC_NESTED-SUBPS_VOLUME_UNIT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/SCWM/S_PACKSPEC_NESTED-SUBPS_VOLUME_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_/SCWM/S_PACKSPEC_NESTED_STR, 
CONTENT TYPE STRING,
GUID TYPE STRING,
AENNR TYPE STRING,
CONTENT_SEQ TYPE STRING,
MATID TYPE STRING,
SUB_PS TYPE STRING,
UNIT TYPE STRING,
QUAN TYPE STRING,
MEINS TYPE STRING,
REFMIX TYPE STRING,
BATCHMIX TYPE STRING,
DUMMY_CONT_DB TYPE STRING,
MATNR TYPE STRING,
ALT_QUAN TYPE STRING,
MAKTX TYPE STRING,
PS_ID TYPE STRING,
SUBPS_TOTAL_QUAN TYPE STRING,
SUBPS_TOTAL_UNIT TYPE STRING,
SUBPS_WEIGHT TYPE STRING,
SUBPS_WEIGHT_UNIT TYPE STRING,
SUBPS_VOLUME TYPE STRING,
SUBPS_VOLUME_UNIT TYPE STRING,
DUMMY_CONTENT_DYN TYPE STRING,
LEVELS TYPE STRING,END OF T_EKKO_STR.
DATA: WA_/SCWM/S_PACKSPEC_NESTED_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_PACKSPEC_NESTED_STR-CONTENT sy-vline 
WA_/SCWM/S_PACKSPEC_NESTED_STR-GUID sy-vline 
WA_/SCWM/S_PACKSPEC_NESTED_STR-AENNR sy-vline 
WA_/SCWM/S_PACKSPEC_NESTED_STR-CONTENT_SEQ sy-vline 
WA_/SCWM/S_PACKSPEC_NESTED_STR-MATID sy-vline 
WA_/SCWM/S_PACKSPEC_NESTED_STR-SUB_PS sy-vline 
WA_/SCWM/S_PACKSPEC_NESTED_STR-UNIT sy-vline 
WA_/SCWM/S_PACKSPEC_NESTED_STR-QUAN sy-vline 
WA_/SCWM/S_PACKSPEC_NESTED_STR-MEINS sy-vline 
WA_/SCWM/S_PACKSPEC_NESTED_STR-REFMIX sy-vline 
WA_/SCWM/S_PACKSPEC_NESTED_STR-BATCHMIX sy-vline 
WA_/SCWM/S_PACKSPEC_NESTED_STR-DUMMY_CONT_DB sy-vline 
WA_/SCWM/S_PACKSPEC_NESTED_STR-MATNR sy-vline 
WA_/SCWM/S_PACKSPEC_NESTED_STR-ALT_QUAN sy-vline 
WA_/SCWM/S_PACKSPEC_NESTED_STR-MAKTX sy-vline 
WA_/SCWM/S_PACKSPEC_NESTED_STR-PS_ID sy-vline 
WA_/SCWM/S_PACKSPEC_NESTED_STR-SUBPS_TOTAL_QUAN sy-vline 
WA_/SCWM/S_PACKSPEC_NESTED_STR-SUBPS_TOTAL_UNIT sy-vline 
WA_/SCWM/S_PACKSPEC_NESTED_STR-SUBPS_WEIGHT sy-vline 
WA_/SCWM/S_PACKSPEC_NESTED_STR-SUBPS_WEIGHT_UNIT sy-vline 
WA_/SCWM/S_PACKSPEC_NESTED_STR-SUBPS_VOLUME sy-vline 
WA_/SCWM/S_PACKSPEC_NESTED_STR-SUBPS_VOLUME_UNIT sy-vline 
WA_/SCWM/S_PACKSPEC_NESTED_STR-DUMMY_CONTENT_DYN sy-vline 
WA_/SCWM/S_PACKSPEC_NESTED_STR-LEVELS sy-vline      INTO ld_text SEPARATED BY SPACE.

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