ABAP Select data from SAP table P0646 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP P0646 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 P0646. 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 P0646 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_P0646 TYPE STANDARD TABLE OF P0646,
      WA_P0646 TYPE P0646,
      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: <P0646> TYPE P0646.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_P0646.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM P0646
  INTO TABLE IT_P0646.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM P0646
*  INTO TABLE @DATA(IT_P06462).
*--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_P0646 INDEX 1 INTO DATA(WA_P06462).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_P0646 ASSIGNING <P0646>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<P0646>-PERNR = 1.
<P0646>-INFTY = 1.
<P0646>-SUBTY = 1.
<P0646>-OBJPS = 1.
<P0646>-SPRPS = 1.

ENDLOOP.

LOOP AT IT_P0646 INTO WA_P0646.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_P0646-ENDDA, sy-vline,
  WA_P0646-BEGDA, sy-vline,
  WA_P0646-SEQNR, sy-vline,
  WA_P0646-AEDTM, sy-vline,
  WA_P0646-UNAME, sy-vline,
  WA_P0646-HISTO, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_P0646 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_P0646 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_P0646 INTO WA_P0646.


*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.
ENDFORM. 

*&---------------------------------------------------------------------*
*& Form process_as_string_field_values
*&---------------------------------------------------------------------*
FORM process_as_string_field_values CHANGING p_EKKO LIKE wa_EKKO.

TYPES: BEGIN OF T_P0646_STR, 
PERNR TYPE STRING,
INFTY TYPE STRING,
SUBTY TYPE STRING,
OBJPS TYPE STRING,
SPRPS TYPE STRING,
ENDDA TYPE STRING,
BEGDA TYPE STRING,
SEQNR TYPE STRING,
AEDTM TYPE STRING,
UNAME TYPE STRING,
HISTO TYPE STRING,
ITXEX TYPE STRING,
REFEX TYPE STRING,
ORDEX TYPE STRING,
ITBLD TYPE STRING,
PREAS TYPE STRING,
FLAG1 TYPE STRING,
FLAG2 TYPE STRING,
FLAG3 TYPE STRING,
FLAG4 TYPE STRING,
RESE1 TYPE STRING,
RESE2 TYPE STRING,
GRPVL TYPE STRING,
STATUS TYPE STRING,
CASE_NUMBER TYPE STRING,
REGNR_FVP TYPE STRING,
SEND_DATE TYPE STRING,
PARTTIME_PERC TYPE STRING,
PENSION_DATE TYPE STRING,
PENSION_SALARY TYPE STRING,
FRANCH_AMOUNT TYPE STRING,
BUILDUP_PERC TYPE STRING,
YEAR_BUILDOP TYPE STRING,
NP_PERC TYPE STRING,
YEAR_BUILDNP TYPE STRING,
CONTIN_PERC TYPE STRING,
PROVISION_PERC TYPE STRING,
GROSS_FVPAMOUNT TYPE STRING,
DEDUCTION_PERC TYPE STRING,
DEDUCTION_AMOUNT TYPE STRING,
NET_FVPAMOUNT TYPE STRING,
VALUE_DATE TYPE STRING,
PAY_DATE TYPE STRING,
COMPENS_PERC TYPE STRING,
COMPENS_AMOUNT TYPE STRING,
PAYMENT_DUE TYPE STRING,
FVP_CLAIMOP TYPE STRING,
FVP_CLAIMNP TYPE STRING,
BEGDA_BENEFIT TYPE STRING,
ENDDA_BENEFIT TYPE STRING,
SEND_CURR TYPE STRING,
RCV_CURR TYPE STRING,
STATUS_OLD TYPE STRING,
STATUS_ACT TYPE STRING,
WAITPER_PERC TYPE STRING,END OF T_EKKO_STR.
DATA: WA_P0646_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_P0646_STR-PERNR sy-vline 
WA_P0646_STR-INFTY sy-vline 
WA_P0646_STR-SUBTY sy-vline 
WA_P0646_STR-OBJPS sy-vline 
WA_P0646_STR-SPRPS sy-vline 
WA_P0646_STR-ENDDA sy-vline 
WA_P0646_STR-BEGDA sy-vline 
WA_P0646_STR-SEQNR sy-vline 
WA_P0646_STR-AEDTM sy-vline 
WA_P0646_STR-UNAME sy-vline 
WA_P0646_STR-HISTO sy-vline 
WA_P0646_STR-ITXEX sy-vline 
WA_P0646_STR-REFEX sy-vline 
WA_P0646_STR-ORDEX sy-vline 
WA_P0646_STR-ITBLD sy-vline 
WA_P0646_STR-PREAS sy-vline 
WA_P0646_STR-FLAG1 sy-vline 
WA_P0646_STR-FLAG2 sy-vline 
WA_P0646_STR-FLAG3 sy-vline 
WA_P0646_STR-FLAG4 sy-vline 
WA_P0646_STR-RESE1 sy-vline 
WA_P0646_STR-RESE2 sy-vline 
WA_P0646_STR-GRPVL sy-vline 
WA_P0646_STR-STATUS sy-vline 
WA_P0646_STR-CASE_NUMBER sy-vline 
WA_P0646_STR-REGNR_FVP sy-vline 
WA_P0646_STR-SEND_DATE sy-vline 
WA_P0646_STR-PARTTIME_PERC sy-vline 
WA_P0646_STR-PENSION_DATE sy-vline 
WA_P0646_STR-PENSION_SALARY sy-vline 
WA_P0646_STR-FRANCH_AMOUNT sy-vline 
WA_P0646_STR-BUILDUP_PERC sy-vline 
WA_P0646_STR-YEAR_BUILDOP sy-vline 
WA_P0646_STR-NP_PERC sy-vline 
WA_P0646_STR-YEAR_BUILDNP sy-vline 
WA_P0646_STR-CONTIN_PERC sy-vline 
WA_P0646_STR-PROVISION_PERC sy-vline 
WA_P0646_STR-GROSS_FVPAMOUNT sy-vline 
WA_P0646_STR-DEDUCTION_PERC sy-vline 
WA_P0646_STR-DEDUCTION_AMOUNT sy-vline 
WA_P0646_STR-NET_FVPAMOUNT sy-vline 
WA_P0646_STR-VALUE_DATE sy-vline 
WA_P0646_STR-PAY_DATE sy-vline 
WA_P0646_STR-COMPENS_PERC sy-vline 
WA_P0646_STR-COMPENS_AMOUNT sy-vline 
WA_P0646_STR-PAYMENT_DUE sy-vline 
WA_P0646_STR-FVP_CLAIMOP sy-vline 
WA_P0646_STR-FVP_CLAIMNP sy-vline 
WA_P0646_STR-BEGDA_BENEFIT sy-vline 
WA_P0646_STR-ENDDA_BENEFIT sy-vline 
WA_P0646_STR-SEND_CURR sy-vline 
WA_P0646_STR-RCV_CURR sy-vline 
WA_P0646_STR-STATUS_OLD sy-vline 
WA_P0646_STR-STATUS_ACT sy-vline 
WA_P0646_STR-WAITPER_PERC sy-vline      INTO ld_text SEPARATED BY SPACE.

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