ABAP Select data from SAP table V_POAC_EBELN_F4 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP V_POAC_EBELN_F4 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 V_POAC_EBELN_F4. 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 V_POAC_EBELN_F4 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_V_POAC_EBELN_F4 TYPE STANDARD TABLE OF V_POAC_EBELN_F4,
      WA_V_POAC_EBELN_F4 TYPE V_POAC_EBELN_F4,
      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: <V_POAC_EBELN_F4> TYPE V_POAC_EBELN_F4.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_V_POAC_EBELN_F4.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM V_POAC_EBELN_F4
  INTO TABLE IT_V_POAC_EBELN_F4.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM V_POAC_EBELN_F4
*  INTO TABLE @DATA(IT_V_POAC_EBELN_F42).
*--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_V_POAC_EBELN_F4 INDEX 1 INTO DATA(WA_V_POAC_EBELN_F42).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_V_POAC_EBELN_F4 ASSIGNING <V_POAC_EBELN_F4>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<V_POAC_EBELN_F4>-MANDT = 1.
<V_POAC_EBELN_F4>-LOGSYS = 1.
<V_POAC_EBELN_F4>-EBELN = 1.
<V_POAC_EBELN_F4>-EBELP = 1.
<V_POAC_EBELN_F4>-BUKRS = 1.

ENDLOOP.

LOOP AT IT_V_POAC_EBELN_F4 INTO WA_V_POAC_EBELN_F4.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_V_POAC_EBELN_F4-ESART, sy-vline,
  WA_V_POAC_EBELN_F4-BKGRP, sy-vline,
  WA_V_POAC_EBELN_F4-EKORG, sy-vline,
  WA_V_POAC_EBELN_F4-BSTYP, sy-vline,
  WA_V_POAC_EBELN_F4-LIFNR, sy-vline,
  WA_V_POAC_EBELN_F4-LOEKZ, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_V_POAC_EBELN_F4 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_V_POAC_EBELN_F4 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_V_POAC_EBELN_F4 INTO WA_V_POAC_EBELN_F4.


*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 LOGSYS
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_V_POAC_EBELN_F4-LOGSYS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_V_POAC_EBELN_F4-LOGSYS.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field EBELN
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_V_POAC_EBELN_F4-EBELN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_V_POAC_EBELN_F4-EBELN.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field LIFNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_V_POAC_EBELN_F4-LIFNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_V_POAC_EBELN_F4-LIFNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit MATN1, internal->external for field MATNR
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_V_POAC_EBELN_F4-MATNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_V_POAC_EBELN_F4-MATNR.
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_V_POAC_EBELN_F4_STR, 
MANDT TYPE STRING,
LOGSYS TYPE STRING,
EBELN TYPE STRING,
EBELP TYPE STRING,
BUKRS TYPE STRING,
ESART TYPE STRING,
BKGRP TYPE STRING,
EKORG TYPE STRING,
BSTYP TYPE STRING,
LIFNR TYPE STRING,
LOEKZ TYPE STRING,
FRGRL TYPE STRING,
MEMORY TYPE STRING,
TXZ01 TYPE STRING,
MATNR TYPE STRING,
MATKL TYPE STRING,
WERKS TYPE STRING,
ELIKZ TYPE STRING,
EREKZ TYPE STRING,END OF T_EKKO_STR.
DATA: WA_V_POAC_EBELN_F4_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_V_POAC_EBELN_F4_STR-MANDT sy-vline 
WA_V_POAC_EBELN_F4_STR-LOGSYS sy-vline 
WA_V_POAC_EBELN_F4_STR-EBELN sy-vline 
WA_V_POAC_EBELN_F4_STR-EBELP sy-vline 
WA_V_POAC_EBELN_F4_STR-BUKRS sy-vline 
WA_V_POAC_EBELN_F4_STR-ESART sy-vline 
WA_V_POAC_EBELN_F4_STR-BKGRP sy-vline 
WA_V_POAC_EBELN_F4_STR-EKORG sy-vline 
WA_V_POAC_EBELN_F4_STR-BSTYP sy-vline 
WA_V_POAC_EBELN_F4_STR-LIFNR sy-vline 
WA_V_POAC_EBELN_F4_STR-LOEKZ sy-vline 
WA_V_POAC_EBELN_F4_STR-FRGRL sy-vline 
WA_V_POAC_EBELN_F4_STR-MEMORY sy-vline 
WA_V_POAC_EBELN_F4_STR-TXZ01 sy-vline 
WA_V_POAC_EBELN_F4_STR-MATNR sy-vline 
WA_V_POAC_EBELN_F4_STR-MATKL sy-vline 
WA_V_POAC_EBELN_F4_STR-WERKS sy-vline 
WA_V_POAC_EBELN_F4_STR-ELIKZ sy-vline 
WA_V_POAC_EBELN_F4_STR-EREKZ sy-vline      INTO ld_text SEPARATED BY SPACE.

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