ABAP Select data from SAP table HRREWCN_S_PAY_DATA into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM HRREWCN_S_PAY_DATA
*  INTO TABLE @DATA(IT_HRREWCN_S_PAY_DATA2).
*--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_HRREWCN_S_PAY_DATA INDEX 1 INTO DATA(WA_HRREWCN_S_PAY_DATA2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<HRREWCN_S_PAY_DATA>-PERNR = 1.
<HRREWCN_S_PAY_DATA>-ENAME = 1.
<HRREWCN_S_PAY_DATA>-BUKRS = 1.
<HRREWCN_S_PAY_DATA>-COMP_NAME = 1.
<HRREWCN_S_PAY_DATA>-WERKS = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_HRREWCN_S_PAY_DATA-NAME1, sy-vline,
  WA_HRREWCN_S_PAY_DATA-BTRTL, sy-vline,
  WA_HRREWCN_S_PAY_DATA-BTEXT, sy-vline,
  WA_HRREWCN_S_PAY_DATA-PERSG, sy-vline,
  WA_HRREWCN_S_PAY_DATA-PGTXT, sy-vline,
  WA_HRREWCN_S_PAY_DATA-PERSK, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_HRREWCN_S_PAY_DATA 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_HRREWCN_S_PAY_DATA 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_HRREWCN_S_PAY_DATA INTO WA_HRREWCN_S_PAY_DATA.


*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 KOSTL
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_HRREWCN_S_PAY_DATA-KOSTL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_HRREWCN_S_PAY_DATA-KOSTL.
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_HRREWCN_S_PAY_DATA_STR, 
PERNR TYPE STRING,
ENAME TYPE STRING,
BUKRS TYPE STRING,
COMP_NAME TYPE STRING,
WERKS TYPE STRING,
NAME1 TYPE STRING,
BTRTL TYPE STRING,
BTEXT TYPE STRING,
PERSG TYPE STRING,
PGTXT TYPE STRING,
PERSK TYPE STRING,
PKTXT TYPE STRING,
KOSTL TYPE STRING,
KOSTX TYPE STRING,
PLVAR TYPE STRING,
OTYPE TYPE STRING,
OBJID TYPE STRING,
SHORT TYPE STRING,
STEXT TYPE STRING,
PLVAR_H TYPE STRING,
OTYPE_H TYPE STRING,
OBJID_H TYPE STRING,
SHORT_H TYPE STRING,
STEXT_H TYPE STRING,
EVP TYPE STRING,
SEQNR TYPE STRING,
ABKRS TYPE STRING,
FPPER TYPE STRING,
FPBEG TYPE STRING,
FPEND TYPE STRING,
IABKRS TYPE STRING,
IPERM TYPE STRING,
INPER TYPE STRING,
IPEND TYPE STRING,
JUPER TYPE STRING,
SRTZA TYPE STRING,
PAYTY TYPE STRING,
PAYID TYPE STRING,
VOID TYPE STRING,
BONDT TYPE STRING,
RUNDT TYPE STRING,
RUNTM TYPE STRING,
PERMO TYPE STRING,
VOIDD TYPE STRING,
VOIDT TYPE STRING,
VOIDR TYPE STRING,
PAYDT TYPE STRING,
DUMMY TYPE STRING,
INPTY TYPE STRING,
INPID TYPE STRING,
OCRSN TYPE STRING,
INOCR TYPE STRING,
OCCAT TYPE STRING,
INOCC TYPE STRING,
REVERSAL TYPE STRING,
OUTOFSEQ TYPE STRING,
OOSDATE TYPE STRING,
ARC_GROUP TYPE STRING,
CALCD TYPE STRING,
PERSON TYPE STRING,
PERSDATA TYPE STRING,
BRACKET TYPE STRING,
RT TYPE STRING,
CRT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_HRREWCN_S_PAY_DATA_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_HRREWCN_S_PAY_DATA_STR-PERNR sy-vline 
WA_HRREWCN_S_PAY_DATA_STR-ENAME sy-vline 
WA_HRREWCN_S_PAY_DATA_STR-BUKRS sy-vline 
WA_HRREWCN_S_PAY_DATA_STR-COMP_NAME sy-vline 
WA_HRREWCN_S_PAY_DATA_STR-WERKS sy-vline 
WA_HRREWCN_S_PAY_DATA_STR-NAME1 sy-vline 
WA_HRREWCN_S_PAY_DATA_STR-BTRTL sy-vline 
WA_HRREWCN_S_PAY_DATA_STR-BTEXT sy-vline 
WA_HRREWCN_S_PAY_DATA_STR-PERSG sy-vline 
WA_HRREWCN_S_PAY_DATA_STR-PGTXT sy-vline 
WA_HRREWCN_S_PAY_DATA_STR-PERSK sy-vline 
WA_HRREWCN_S_PAY_DATA_STR-PKTXT sy-vline 
WA_HRREWCN_S_PAY_DATA_STR-KOSTL sy-vline 
WA_HRREWCN_S_PAY_DATA_STR-KOSTX sy-vline 
WA_HRREWCN_S_PAY_DATA_STR-PLVAR sy-vline 
WA_HRREWCN_S_PAY_DATA_STR-OTYPE sy-vline 
WA_HRREWCN_S_PAY_DATA_STR-OBJID sy-vline 
WA_HRREWCN_S_PAY_DATA_STR-SHORT sy-vline 
WA_HRREWCN_S_PAY_DATA_STR-STEXT sy-vline 
WA_HRREWCN_S_PAY_DATA_STR-PLVAR_H sy-vline 
WA_HRREWCN_S_PAY_DATA_STR-OTYPE_H sy-vline 
WA_HRREWCN_S_PAY_DATA_STR-OBJID_H sy-vline 
WA_HRREWCN_S_PAY_DATA_STR-SHORT_H sy-vline 
WA_HRREWCN_S_PAY_DATA_STR-STEXT_H sy-vline 
WA_HRREWCN_S_PAY_DATA_STR-EVP sy-vline 
WA_HRREWCN_S_PAY_DATA_STR-SEQNR sy-vline 
WA_HRREWCN_S_PAY_DATA_STR-ABKRS sy-vline 
WA_HRREWCN_S_PAY_DATA_STR-FPPER sy-vline 
WA_HRREWCN_S_PAY_DATA_STR-FPBEG sy-vline 
WA_HRREWCN_S_PAY_DATA_STR-FPEND sy-vline 
WA_HRREWCN_S_PAY_DATA_STR-IABKRS sy-vline 
WA_HRREWCN_S_PAY_DATA_STR-IPERM sy-vline 
WA_HRREWCN_S_PAY_DATA_STR-INPER sy-vline 
WA_HRREWCN_S_PAY_DATA_STR-IPEND sy-vline 
WA_HRREWCN_S_PAY_DATA_STR-JUPER sy-vline 
WA_HRREWCN_S_PAY_DATA_STR-SRTZA sy-vline 
WA_HRREWCN_S_PAY_DATA_STR-PAYTY sy-vline 
WA_HRREWCN_S_PAY_DATA_STR-PAYID sy-vline 
WA_HRREWCN_S_PAY_DATA_STR-VOID sy-vline 
WA_HRREWCN_S_PAY_DATA_STR-BONDT sy-vline 
WA_HRREWCN_S_PAY_DATA_STR-RUNDT sy-vline 
WA_HRREWCN_S_PAY_DATA_STR-RUNTM sy-vline 
WA_HRREWCN_S_PAY_DATA_STR-PERMO sy-vline 
WA_HRREWCN_S_PAY_DATA_STR-VOIDD sy-vline 
WA_HRREWCN_S_PAY_DATA_STR-VOIDT sy-vline 
WA_HRREWCN_S_PAY_DATA_STR-VOIDR sy-vline 
WA_HRREWCN_S_PAY_DATA_STR-PAYDT sy-vline 
WA_HRREWCN_S_PAY_DATA_STR-DUMMY sy-vline 
WA_HRREWCN_S_PAY_DATA_STR-INPTY sy-vline 
WA_HRREWCN_S_PAY_DATA_STR-INPID sy-vline 
WA_HRREWCN_S_PAY_DATA_STR-OCRSN sy-vline 
WA_HRREWCN_S_PAY_DATA_STR-INOCR sy-vline 
WA_HRREWCN_S_PAY_DATA_STR-OCCAT sy-vline 
WA_HRREWCN_S_PAY_DATA_STR-INOCC sy-vline 
WA_HRREWCN_S_PAY_DATA_STR-REVERSAL sy-vline 
WA_HRREWCN_S_PAY_DATA_STR-OUTOFSEQ sy-vline 
WA_HRREWCN_S_PAY_DATA_STR-OOSDATE sy-vline 
WA_HRREWCN_S_PAY_DATA_STR-ARC_GROUP sy-vline 
WA_HRREWCN_S_PAY_DATA_STR-CALCD sy-vline 
WA_HRREWCN_S_PAY_DATA_STR-PERSON sy-vline 
WA_HRREWCN_S_PAY_DATA_STR-PERSDATA sy-vline 
WA_HRREWCN_S_PAY_DATA_STR-BRACKET sy-vline 
WA_HRREWCN_S_PAY_DATA_STR-RT sy-vline 
WA_HRREWCN_S_PAY_DATA_STR-CRT sy-vline      INTO ld_text SEPARATED BY SPACE.

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