ABAP Select data from SAP table PPOHISTMIG into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PPOHISTMIG
*  INTO TABLE @DATA(IT_PPOHISTMIG2).
*--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_PPOHISTMIG INDEX 1 INTO DATA(WA_PPOHISTMIG2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<PPOHISTMIG>-MANDT = 1.
<PPOHISTMIG>-EBELN = 1.
<PPOHISTMIG>-EBELP = 1.
<PPOHISTMIG>-BELNR = 1.
<PPOHISTMIG>-BUZEI = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_PPOHISTMIG-BSART, sy-vline,
  WA_PPOHISTMIG-EKORG, sy-vline,
  WA_PPOHISTMIG-EKGRP, sy-vline,
  WA_PPOHISTMIG-WERKS, sy-vline,
  WA_PPOHISTMIG-BUDAT, sy-vline,
  WA_PPOHISTMIG-MENGE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_PPOHISTMIG 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_PPOHISTMIG 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_PPOHISTMIG INTO WA_PPOHISTMIG.


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

*Conversion exit ALPHA, internal->external for field BELNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_PPOHISTMIG-BELNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PPOHISTMIG-BELNR.
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_PPOHISTMIG_STR, 
MANDT TYPE STRING,
EBELN TYPE STRING,
EBELP TYPE STRING,
BELNR TYPE STRING,
BUZEI TYPE STRING,
BSART TYPE STRING,
EKORG TYPE STRING,
EKGRP TYPE STRING,
WERKS TYPE STRING,
BUDAT TYPE STRING,
MENGE TYPE STRING,
HASREVERSAL TYPE STRING,
FINALPOSTINGDATE TYPE STRING,
TOTALDELIVEREDQUANTITY TYPE STRING,
LASTDELIVEREDQUANTITY TYPE STRING,END OF T_EKKO_STR.
DATA: WA_PPOHISTMIG_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_PPOHISTMIG_STR-MANDT sy-vline 
WA_PPOHISTMIG_STR-EBELN sy-vline 
WA_PPOHISTMIG_STR-EBELP sy-vline 
WA_PPOHISTMIG_STR-BELNR sy-vline 
WA_PPOHISTMIG_STR-BUZEI sy-vline 
WA_PPOHISTMIG_STR-BSART sy-vline 
WA_PPOHISTMIG_STR-EKORG sy-vline 
WA_PPOHISTMIG_STR-EKGRP sy-vline 
WA_PPOHISTMIG_STR-WERKS sy-vline 
WA_PPOHISTMIG_STR-BUDAT sy-vline 
WA_PPOHISTMIG_STR-MENGE sy-vline 
WA_PPOHISTMIG_STR-HASREVERSAL sy-vline 
WA_PPOHISTMIG_STR-FINALPOSTINGDATE sy-vline 
WA_PPOHISTMIG_STR-TOTALDELIVEREDQUANTITY sy-vline 
WA_PPOHISTMIG_STR-LASTDELIVEREDQUANTITY sy-vline      INTO ld_text SEPARATED BY SPACE.

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