ABAP Select data from SAP table P02RPLAHVC1_ALV2 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP P02RPLAHVC1_ALV2 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 P02RPLAHVC1_ALV2. 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 P02RPLAHVC1_ALV2 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_P02RPLAHVC1_ALV2 TYPE STANDARD TABLE OF P02RPLAHVC1_ALV2,
      WA_P02RPLAHVC1_ALV2 TYPE P02RPLAHVC1_ALV2,
      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: <P02RPLAHVC1_ALV2> TYPE P02RPLAHVC1_ALV2.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_P02RPLAHVC1_ALV2.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM P02RPLAHVC1_ALV2
  INTO TABLE IT_P02RPLAHVC1_ALV2.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM P02RPLAHVC1_ALV2
*  INTO TABLE @DATA(IT_P02RPLAHVC1_ALV22).
*--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_P02RPLAHVC1_ALV2 INDEX 1 INTO DATA(WA_P02RPLAHVC1_ALV22).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_P02RPLAHVC1_ALV2 ASSIGNING <P02RPLAHVC1_ALV2>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<P02RPLAHVC1_ALV2>-BUKRS = 1.
<P02RPLAHVC1_ALV2>-ABREINHEIT = 1.
<P02RPLAHVC1_ALV2>-VNOUT = 1.
<P02RPLAHVC1_ALV2>-AHVNR_GEBDAT = 1.
<P02RPLAHVC1_ALV2>-GBDAT = 1.

ENDLOOP.

LOOP AT IT_P02RPLAHVC1_ALV2 INTO WA_P02RPLAHVC1_ALV2.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_P02RPLAHVC1_ALV2-NAME, sy-vline,
  WA_P02RPLAHVC1_ALV2-BESCH_VONBIS, sy-vline,
  WA_P02RPLAHVC1_ALV2-BESCH_VONBIS2, sy-vline,
  WA_P02RPLAHVC1_ALV2-AHVFRE, sy-vline,
  WA_P02RPLAHVC1_ALV2-ALVFRE, sy-vline,
  WA_P02RPLAHVC1_ALV2-PERNR, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_P02RPLAHVC1_ALV2 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_P02RPLAHVC1_ALV2 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_P02RPLAHVC1_ALV2 INTO WA_P02RPLAHVC1_ALV2.


*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 PDATE, internal->external for field GBDAT
CALL FUNCTION 'CONVERSION_EXIT_PDATE_OUTPUT'
  EXPORTING
    input =                      WA_P02RPLAHVC1_ALV2-GBDAT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_P02RPLAHVC1_ALV2-GBDAT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AHVN2, internal->external for field NAHVN
CALL FUNCTION 'CONVERSION_EXIT_AHVN2_OUTPUT'
  EXPORTING
    input =                      WA_P02RPLAHVC1_ALV2-NAHVN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_P02RPLAHVC1_ALV2-NAHVN.
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_P02RPLAHVC1_ALV2_STR, 
BUKRS TYPE STRING,
ABREINHEIT TYPE STRING,
VNOUT TYPE STRING,
AHVNR_GEBDAT TYPE STRING,
GBDAT TYPE STRING,
NAME TYPE STRING,
BESCH_VONBIS TYPE STRING,
BESCH_VONBIS2 TYPE STRING,
AHVFRE TYPE STRING,
ALVFRE TYPE STRING,
PERNR TYPE STRING,
APBEG TYPE STRING,
APEND TYPE STRING,
RR TYPE STRING,
SEXUS TYPE STRING,
NAHVN TYPE STRING,
HPERNR TYPE STRING,
ABRECHNR TYPE STRING,
SW_RENT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_P02RPLAHVC1_ALV2_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_P02RPLAHVC1_ALV2_STR-BUKRS sy-vline 
WA_P02RPLAHVC1_ALV2_STR-ABREINHEIT sy-vline 
WA_P02RPLAHVC1_ALV2_STR-VNOUT sy-vline 
WA_P02RPLAHVC1_ALV2_STR-AHVNR_GEBDAT sy-vline 
WA_P02RPLAHVC1_ALV2_STR-GBDAT sy-vline 
WA_P02RPLAHVC1_ALV2_STR-NAME sy-vline 
WA_P02RPLAHVC1_ALV2_STR-BESCH_VONBIS sy-vline 
WA_P02RPLAHVC1_ALV2_STR-BESCH_VONBIS2 sy-vline 
WA_P02RPLAHVC1_ALV2_STR-AHVFRE sy-vline 
WA_P02RPLAHVC1_ALV2_STR-ALVFRE sy-vline 
WA_P02RPLAHVC1_ALV2_STR-PERNR sy-vline 
WA_P02RPLAHVC1_ALV2_STR-APBEG sy-vline 
WA_P02RPLAHVC1_ALV2_STR-APEND sy-vline 
WA_P02RPLAHVC1_ALV2_STR-RR sy-vline 
WA_P02RPLAHVC1_ALV2_STR-SEXUS sy-vline 
WA_P02RPLAHVC1_ALV2_STR-NAHVN sy-vline 
WA_P02RPLAHVC1_ALV2_STR-HPERNR sy-vline 
WA_P02RPLAHVC1_ALV2_STR-ABRECHNR sy-vline 
WA_P02RPLAHVC1_ALV2_STR-SW_RENT sy-vline      INTO ld_text SEPARATED BY SPACE.

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