ABAP Select data from SAP table E3PAOBJ into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP E3PAOBJ 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 E3PAOBJ. 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 E3PAOBJ 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_E3PAOBJ TYPE STANDARD TABLE OF E3PAOBJ,
      WA_E3PAOBJ TYPE E3PAOBJ,
      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: <E3PAOBJ> TYPE E3PAOBJ.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_E3PAOBJ.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM E3PAOBJ
  INTO TABLE IT_E3PAOBJ.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM E3PAOBJ
*  INTO TABLE @DATA(IT_E3PAOBJ2).
*--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_E3PAOBJ INDEX 1 INTO DATA(WA_E3PAOBJ2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_E3PAOBJ ASSIGNING <E3PAOBJ>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<E3PAOBJ>-PAOBJNR = 1.
<E3PAOBJ>-KNDNR = 1.
<E3PAOBJ>-ARTNR = 1.
<E3PAOBJ>-FKART = 1.
<E3PAOBJ>-KAUFN = 1.

ENDLOOP.

LOOP AT IT_E3PAOBJ INTO WA_E3PAOBJ.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_E3PAOBJ-KDPOS, sy-vline,
  WA_E3PAOBJ-AUFNR, sy-vline,
  WA_E3PAOBJ-BUKRS, sy-vline,
  WA_E3PAOBJ-KOKRS, sy-vline,
  WA_E3PAOBJ-WERKS, sy-vline,
  WA_E3PAOBJ-GSBER, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_E3PAOBJ 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_E3PAOBJ 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_E3PAOBJ INTO WA_E3PAOBJ.


*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 KNDNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_E3PAOBJ-KNDNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_E3PAOBJ-KNDNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit MATN1, internal->external for field ARTNR
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_E3PAOBJ-ARTNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_E3PAOBJ-ARTNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field KAUFN
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_E3PAOBJ-KAUFN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_E3PAOBJ-KAUFN.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field AUFNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_E3PAOBJ-AUFNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_E3PAOBJ-AUFNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field PRCTR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_E3PAOBJ-PRCTR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_E3PAOBJ-PRCTR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ABPSP, internal->external for field PSPNR
CALL FUNCTION 'CONVERSION_EXIT_ABPSP_OUTPUT'
  EXPORTING
    input =                      WA_E3PAOBJ-PSPNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_E3PAOBJ-PSPNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field MEINH
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_E3PAOBJ-MEINH
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_E3PAOBJ-MEINH.
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_E3PAOBJ_STR, 
PAOBJNR TYPE STRING,
KNDNR TYPE STRING,
ARTNR TYPE STRING,
FKART TYPE STRING,
KAUFN TYPE STRING,
KDPOS TYPE STRING,
AUFNR TYPE STRING,
BUKRS TYPE STRING,
KOKRS TYPE STRING,
WERKS TYPE STRING,
GSBER TYPE STRING,
VKORG TYPE STRING,
VTWEG TYPE STRING,
SPART TYPE STRING,
PRCTR TYPE STRING,
KSTRG TYPE STRING,
PSPNR TYPE STRING,
MEINH TYPE STRING,END OF T_EKKO_STR.
DATA: WA_E3PAOBJ_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_E3PAOBJ_STR-PAOBJNR sy-vline 
WA_E3PAOBJ_STR-KNDNR sy-vline 
WA_E3PAOBJ_STR-ARTNR sy-vline 
WA_E3PAOBJ_STR-FKART sy-vline 
WA_E3PAOBJ_STR-KAUFN sy-vline 
WA_E3PAOBJ_STR-KDPOS sy-vline 
WA_E3PAOBJ_STR-AUFNR sy-vline 
WA_E3PAOBJ_STR-BUKRS sy-vline 
WA_E3PAOBJ_STR-KOKRS sy-vline 
WA_E3PAOBJ_STR-WERKS sy-vline 
WA_E3PAOBJ_STR-GSBER sy-vline 
WA_E3PAOBJ_STR-VKORG sy-vline 
WA_E3PAOBJ_STR-VTWEG sy-vline 
WA_E3PAOBJ_STR-SPART sy-vline 
WA_E3PAOBJ_STR-PRCTR sy-vline 
WA_E3PAOBJ_STR-KSTRG sy-vline 
WA_E3PAOBJ_STR-PSPNR sy-vline 
WA_E3PAOBJ_STR-MEINH sy-vline      INTO ld_text SEPARATED BY SPACE.

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