ABAP Select data from SAP table V_ACEPSOH into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP V_ACEPSOH 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_ACEPSOH. 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_ACEPSOH 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_ACEPSOH TYPE STANDARD TABLE OF V_ACEPSOH,
      WA_V_ACEPSOH TYPE V_ACEPSOH,
      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_ACEPSOH> TYPE V_ACEPSOH.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM V_ACEPSOH
*  INTO TABLE @DATA(IT_V_ACEPSOH2).
*--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_ACEPSOH INDEX 1 INTO DATA(WA_V_ACEPSOH2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<V_ACEPSOH>-MANDT = 1.
<V_ACEPSOH>-COMP = 1.
<V_ACEPSOH>-BUKRS = 1.
<V_ACEPSOH>-REF_KEY = 1.
<V_ACEPSOH>-REF_SUBKEY = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_V_ACEPSOH-SUBID, sy-vline,
  WA_V_ACEPSOH-UNAME, sy-vline,
  WA_V_ACEPSOH-CPUDT, sy-vline,
  WA_V_ACEPSOH-CPUTM, sy-vline,
  WA_V_ACEPSOH-DEACTDATE, sy-vline,
  WA_V_ACEPSOH-STATUS, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_V_ACEPSOH 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_ACEPSOH 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_ACEPSOH INTO WA_V_ACEPSOH.


*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 GJAHR, internal->external for field FIRSTYEAR
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_V_ACEPSOH-FIRSTYEAR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_V_ACEPSOH-FIRSTYEAR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit GJAHR, internal->external for field LASTYEAR
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_V_ACEPSOH-LASTYEAR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_V_ACEPSOH-LASTYEAR.
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_ACEPSOH_STR, 
MANDT TYPE STRING,
COMP TYPE STRING,
BUKRS TYPE STRING,
REF_KEY TYPE STRING,
REF_SUBKEY TYPE STRING,
SUBID TYPE STRING,
UNAME TYPE STRING,
CPUDT TYPE STRING,
CPUTM TYPE STRING,
DEACTDATE TYPE STRING,
STATUS TYPE STRING,
FIRSTYEAR TYPE STRING,
LASTYEAR TYPE STRING,
OBJID TYPE STRING,
OBJSTATUS TYPE STRING,END OF T_EKKO_STR.
DATA: WA_V_ACEPSOH_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_ACEPSOH_STR-MANDT sy-vline 
WA_V_ACEPSOH_STR-COMP sy-vline 
WA_V_ACEPSOH_STR-BUKRS sy-vline 
WA_V_ACEPSOH_STR-REF_KEY sy-vline 
WA_V_ACEPSOH_STR-REF_SUBKEY sy-vline 
WA_V_ACEPSOH_STR-SUBID sy-vline 
WA_V_ACEPSOH_STR-UNAME sy-vline 
WA_V_ACEPSOH_STR-CPUDT sy-vline 
WA_V_ACEPSOH_STR-CPUTM sy-vline 
WA_V_ACEPSOH_STR-DEACTDATE sy-vline 
WA_V_ACEPSOH_STR-STATUS sy-vline 
WA_V_ACEPSOH_STR-FIRSTYEAR sy-vline 
WA_V_ACEPSOH_STR-LASTYEAR sy-vline 
WA_V_ACEPSOH_STR-OBJID sy-vline 
WA_V_ACEPSOH_STR-OBJSTATUS sy-vline      INTO ld_text SEPARATED BY SPACE.

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