ABAP Select data from SAP table HRPAYCH_S_ELM40_WHT_FLD_AP_P into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP HRPAYCH_S_ELM40_WHT_FLD_AP_P 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 HRPAYCH_S_ELM40_WHT_FLD_AP_P. 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 HRPAYCH_S_ELM40_WHT_FLD_AP_P 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_HRPAYCH_S_ELM40_WHT_FLD_AP_P TYPE STANDARD TABLE OF HRPAYCH_S_ELM40_WHT_FLD_AP_P,
      WA_HRPAYCH_S_ELM40_WHT_FLD_AP_P TYPE HRPAYCH_S_ELM40_WHT_FLD_AP_P,
      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: <HRPAYCH_S_ELM40_WHT_FLD_AP_P> TYPE HRPAYCH_S_ELM40_WHT_FLD_AP_P.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_HRPAYCH_S_ELM40_WHT_FLD_AP_P.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM HRPAYCH_S_ELM40_WHT_FLD_AP_P
  INTO TABLE IT_HRPAYCH_S_ELM40_WHT_FLD_AP_P.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM HRPAYCH_S_ELM40_WHT_FLD_AP_P
*  INTO TABLE @DATA(IT_HRPAYCH_S_ELM40_WHT_FLD_AP_P2).
*--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_HRPAYCH_S_ELM40_WHT_FLD_AP_P INDEX 1 INTO DATA(WA_HRPAYCH_S_ELM40_WHT_FLD_AP_P2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_HRPAYCH_S_ELM40_WHT_FLD_AP_P ASSIGNING <HRPAYCH_S_ELM40_WHT_FLD_AP_P>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<HRPAYCH_S_ELM40_WHT_FLD_AP_P>-DENOMINATION = 1.
<HRPAYCH_S_ELM40_WHT_FLD_AP_P>-EMPLOYMENT = 1.
<HRPAYCH_S_ELM40_WHT_FLD_AP_P>-OTHERACT = 1.
<HRPAYCH_S_ELM40_WHT_FLD_AP_P>-ANNUITY = 1.
<HRPAYCH_S_ELM40_WHT_FLD_AP_P>-CONCUBINAGE = 1.

ENDLOOP.

LOOP AT IT_HRPAYCH_S_ELM40_WHT_FLD_AP_P INTO WA_HRPAYCH_S_ELM40_WHT_FLD_AP_P.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_HRPAYCH_S_ELM40_WHT_FLD_AP_P-AP_RESFIELD, sy-vline,
  WA_HRPAYCH_S_ELM40_WHT_FLD_AP_P-MP_NAHVN, sy-vline,
  WA_HRPAYCH_S_ELM40_WHT_FLD_AP_P-MP_NACHN, sy-vline,
  WA_HRPAYCH_S_ELM40_WHT_FLD_AP_P-MP_VORNA, sy-vline,
  WA_HRPAYCH_S_ELM40_WHT_FLD_AP_P-MP_GBPAS, sy-vline,
  WA_HRPAYCH_S_ELM40_WHT_FLD_AP_P-MP_RESFIELD, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_HRPAYCH_S_ELM40_WHT_FLD_AP_P 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_HRPAYCH_S_ELM40_WHT_FLD_AP_P 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_HRPAYCH_S_ELM40_WHT_FLD_AP_P INTO WA_HRPAYCH_S_ELM40_WHT_FLD_AP_P.


*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 AHVN2, internal->external for field MP_NAHVN
CALL FUNCTION 'CONVERSION_EXIT_AHVN2_OUTPUT'
  EXPORTING
    input =                      WA_HRPAYCH_S_ELM40_WHT_FLD_AP_P-MP_NAHVN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_HRPAYCH_S_ELM40_WHT_FLD_AP_P-MP_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_HRPAYCH_S_ELM40_WHT_FLD_AP_P_STR, 
DENOMINATION TYPE STRING,
EMPLOYMENT TYPE STRING,
OTHERACT TYPE STRING,
ANNUITY TYPE STRING,
CONCUBINAGE TYPE STRING,
AP_RESFIELD TYPE STRING,
MP_NAHVN TYPE STRING,
MP_NACHN TYPE STRING,
MP_VORNA TYPE STRING,
MP_GBPAS TYPE STRING,
MP_RESFIELD TYPE STRING,
CMPLN TYPE STRING,
STRAS TYPE STRING,
POBOX TYPE STRING,
LOCTY TYPE STRING,
PSTLZ TYPE STRING,
ORT01 TYPE STRING,
LAND1 TYPE STRING,
NUSEL TYPE STRING,
CNTRY TYPE STRING,
PPAYBEGDA TYPE STRING,
PPAYENDDA TYPE STRING,
WORKCOMP TYPE STRING,
PEMPLOYM TYPE STRING,
WORKCANTO TYPE STRING,
WC_RESFIELD TYPE STRING,END OF T_EKKO_STR.
DATA: WA_HRPAYCH_S_ELM40_WHT_FLD_AP_P_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_HRPAYCH_S_ELM40_WHT_FLD_AP_P_STR-DENOMINATION sy-vline 
WA_HRPAYCH_S_ELM40_WHT_FLD_AP_P_STR-EMPLOYMENT sy-vline 
WA_HRPAYCH_S_ELM40_WHT_FLD_AP_P_STR-OTHERACT sy-vline 
WA_HRPAYCH_S_ELM40_WHT_FLD_AP_P_STR-ANNUITY sy-vline 
WA_HRPAYCH_S_ELM40_WHT_FLD_AP_P_STR-CONCUBINAGE sy-vline 
WA_HRPAYCH_S_ELM40_WHT_FLD_AP_P_STR-AP_RESFIELD sy-vline 
WA_HRPAYCH_S_ELM40_WHT_FLD_AP_P_STR-MP_NAHVN sy-vline 
WA_HRPAYCH_S_ELM40_WHT_FLD_AP_P_STR-MP_NACHN sy-vline 
WA_HRPAYCH_S_ELM40_WHT_FLD_AP_P_STR-MP_VORNA sy-vline 
WA_HRPAYCH_S_ELM40_WHT_FLD_AP_P_STR-MP_GBPAS sy-vline 
WA_HRPAYCH_S_ELM40_WHT_FLD_AP_P_STR-MP_RESFIELD sy-vline 
WA_HRPAYCH_S_ELM40_WHT_FLD_AP_P_STR-CMPLN sy-vline 
WA_HRPAYCH_S_ELM40_WHT_FLD_AP_P_STR-STRAS sy-vline 
WA_HRPAYCH_S_ELM40_WHT_FLD_AP_P_STR-POBOX sy-vline 
WA_HRPAYCH_S_ELM40_WHT_FLD_AP_P_STR-LOCTY sy-vline 
WA_HRPAYCH_S_ELM40_WHT_FLD_AP_P_STR-PSTLZ sy-vline 
WA_HRPAYCH_S_ELM40_WHT_FLD_AP_P_STR-ORT01 sy-vline 
WA_HRPAYCH_S_ELM40_WHT_FLD_AP_P_STR-LAND1 sy-vline 
WA_HRPAYCH_S_ELM40_WHT_FLD_AP_P_STR-NUSEL sy-vline 
WA_HRPAYCH_S_ELM40_WHT_FLD_AP_P_STR-CNTRY sy-vline 
WA_HRPAYCH_S_ELM40_WHT_FLD_AP_P_STR-PPAYBEGDA sy-vline 
WA_HRPAYCH_S_ELM40_WHT_FLD_AP_P_STR-PPAYENDDA sy-vline 
WA_HRPAYCH_S_ELM40_WHT_FLD_AP_P_STR-WORKCOMP sy-vline 
WA_HRPAYCH_S_ELM40_WHT_FLD_AP_P_STR-PEMPLOYM sy-vline 
WA_HRPAYCH_S_ELM40_WHT_FLD_AP_P_STR-WORKCANTO sy-vline 
WA_HRPAYCH_S_ELM40_WHT_FLD_AP_P_STR-WC_RESFIELD sy-vline      INTO ld_text SEPARATED BY SPACE.

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