ABAP Select data from SAP table HLP_PACKPO into internal table

Get Example source ABAP code based on a different SAP table
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Below is a number of ABAP code snippets to demonstrate how to select data from SAP HLP_PACKPO 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 HLP_PACKPO. 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 HLP_PACKPO 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_HLP_PACKPO TYPE STANDARD TABLE OF HLP_PACKPO,
      WA_HLP_PACKPO TYPE HLP_PACKPO,
      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: <HLP_PACKPO> TYPE HLP_PACKPO.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM HLP_PACKPO
*  INTO TABLE @DATA(IT_HLP_PACKPO2).
*--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_HLP_PACKPO INDEX 1 INTO DATA(WA_HLP_PACKPO2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<HLP_PACKPO>-MANDT = 1.
<HLP_PACKPO>-PACKITEMID = 1.
<HLP_PACKPO>-ITCOUNT = 1.
<HLP_PACKPO>-PACKNR = 1.
<HLP_PACKPO>-PACKITEM = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_HLP_PACKPO-PAITEMTYPE, sy-vline,
  WA_HLP_PACKPO-MATNR, sy-vline,
  WA_HLP_PACKPO-CLINT, sy-vline,
  WA_HLP_PACKPO-SUBPACKNR, sy-vline,
  WA_HLP_PACKPO-TRGQTY, sy-vline,
  WA_HLP_PACKPO-MINQTY, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_HLP_PACKPO 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_HLP_PACKPO 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_HLP_PACKPO INTO WA_HLP_PACKPO.


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

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

*Conversion exit CUNIT, internal->external for field UNITQTY
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_HLP_PACKPO-UNITQTY
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_HLP_PACKPO-UNITQTY.
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_HLP_PACKPO_STR, 
MANDT TYPE STRING,
PACKITEMID TYPE STRING,
ITCOUNT TYPE STRING,
PACKNR TYPE STRING,
PACKITEM TYPE STRING,
PAITEMTYPE TYPE STRING,
MATNR TYPE STRING,
CLINT TYPE STRING,
SUBPACKNR TYPE STRING,
TRGQTY TYPE STRING,
MINQTY TYPE STRING,
RNDQTY TYPE STRING,
BASEUNIT TYPE STRING,
UNITQTY TYPE STRING,
MATMIXAWD TYPE STRING,
INDCHMIX TYPE STRING,
INDFILLUP TYPE STRING,
INDNRELFU TYPE STRING,
INDNOHU TYPE STRING,
XCOORD TYPE STRING,
YCOORD TYPE STRING,
ZCOORD TYPE STRING,
GRPID TYPE STRING,
INDDEL TYPE STRING,
ITEMTYPE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_HLP_PACKPO_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_HLP_PACKPO_STR-MANDT sy-vline 
WA_HLP_PACKPO_STR-PACKITEMID sy-vline 
WA_HLP_PACKPO_STR-ITCOUNT sy-vline 
WA_HLP_PACKPO_STR-PACKNR sy-vline 
WA_HLP_PACKPO_STR-PACKITEM sy-vline 
WA_HLP_PACKPO_STR-PAITEMTYPE sy-vline 
WA_HLP_PACKPO_STR-MATNR sy-vline 
WA_HLP_PACKPO_STR-CLINT sy-vline 
WA_HLP_PACKPO_STR-SUBPACKNR sy-vline 
WA_HLP_PACKPO_STR-TRGQTY sy-vline 
WA_HLP_PACKPO_STR-MINQTY sy-vline 
WA_HLP_PACKPO_STR-RNDQTY sy-vline 
WA_HLP_PACKPO_STR-BASEUNIT sy-vline 
WA_HLP_PACKPO_STR-UNITQTY sy-vline 
WA_HLP_PACKPO_STR-MATMIXAWD sy-vline 
WA_HLP_PACKPO_STR-INDCHMIX sy-vline 
WA_HLP_PACKPO_STR-INDFILLUP sy-vline 
WA_HLP_PACKPO_STR-INDNRELFU sy-vline 
WA_HLP_PACKPO_STR-INDNOHU sy-vline 
WA_HLP_PACKPO_STR-XCOORD sy-vline 
WA_HLP_PACKPO_STR-YCOORD sy-vline 
WA_HLP_PACKPO_STR-ZCOORD sy-vline 
WA_HLP_PACKPO_STR-GRPID sy-vline 
WA_HLP_PACKPO_STR-INDDEL sy-vline 
WA_HLP_PACKPO_STR-ITEMTYPE sy-vline      INTO ld_text SEPARATED BY SPACE.

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