ABAP Select data from SAP table HRREWCN_S_PAY_DATA_BASIC 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_BASIC 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_BASIC. 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_BASIC 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_BASIC TYPE STANDARD TABLE OF HRREWCN_S_PAY_DATA_BASIC,
      WA_HRREWCN_S_PAY_DATA_BASIC TYPE HRREWCN_S_PAY_DATA_BASIC,
      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_BASIC> TYPE HRREWCN_S_PAY_DATA_BASIC.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM HRREWCN_S_PAY_DATA_BASIC
*  INTO TABLE @DATA(IT_HRREWCN_S_PAY_DATA_BASIC2).
*--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_BASIC INDEX 1 INTO DATA(WA_HRREWCN_S_PAY_DATA_BASIC2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<HRREWCN_S_PAY_DATA_BASIC>-ENAME = 1.
<HRREWCN_S_PAY_DATA_BASIC>-BUKRS = 1.
<HRREWCN_S_PAY_DATA_BASIC>-COMP_NAME = 1.
<HRREWCN_S_PAY_DATA_BASIC>-WERKS = 1.
<HRREWCN_S_PAY_DATA_BASIC>-NAME1 = 1.

ENDLOOP.

LOOP AT IT_HRREWCN_S_PAY_DATA_BASIC INTO WA_HRREWCN_S_PAY_DATA_BASIC.
*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_BASIC-BTRTL, sy-vline,
  WA_HRREWCN_S_PAY_DATA_BASIC-BTEXT, sy-vline,
  WA_HRREWCN_S_PAY_DATA_BASIC-PERSG, sy-vline,
  WA_HRREWCN_S_PAY_DATA_BASIC-PGTXT, sy-vline,
  WA_HRREWCN_S_PAY_DATA_BASIC-PERSK, sy-vline,
  WA_HRREWCN_S_PAY_DATA_BASIC-PKTXT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_HRREWCN_S_PAY_DATA_BASIC 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_BASIC 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_BASIC INTO WA_HRREWCN_S_PAY_DATA_BASIC.


*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_BASIC-KOSTL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_HRREWCN_S_PAY_DATA_BASIC-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_BASIC_STR, 
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,END OF T_EKKO_STR.
DATA: WA_HRREWCN_S_PAY_DATA_BASIC_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_BASIC_STR-ENAME sy-vline 
WA_HRREWCN_S_PAY_DATA_BASIC_STR-BUKRS sy-vline 
WA_HRREWCN_S_PAY_DATA_BASIC_STR-COMP_NAME sy-vline 
WA_HRREWCN_S_PAY_DATA_BASIC_STR-WERKS sy-vline 
WA_HRREWCN_S_PAY_DATA_BASIC_STR-NAME1 sy-vline 
WA_HRREWCN_S_PAY_DATA_BASIC_STR-BTRTL sy-vline 
WA_HRREWCN_S_PAY_DATA_BASIC_STR-BTEXT sy-vline 
WA_HRREWCN_S_PAY_DATA_BASIC_STR-PERSG sy-vline 
WA_HRREWCN_S_PAY_DATA_BASIC_STR-PGTXT sy-vline 
WA_HRREWCN_S_PAY_DATA_BASIC_STR-PERSK sy-vline 
WA_HRREWCN_S_PAY_DATA_BASIC_STR-PKTXT sy-vline 
WA_HRREWCN_S_PAY_DATA_BASIC_STR-KOSTL sy-vline 
WA_HRREWCN_S_PAY_DATA_BASIC_STR-KOSTX sy-vline 
WA_HRREWCN_S_PAY_DATA_BASIC_STR-PLVAR sy-vline 
WA_HRREWCN_S_PAY_DATA_BASIC_STR-OTYPE sy-vline 
WA_HRREWCN_S_PAY_DATA_BASIC_STR-OBJID sy-vline 
WA_HRREWCN_S_PAY_DATA_BASIC_STR-SHORT sy-vline 
WA_HRREWCN_S_PAY_DATA_BASIC_STR-STEXT sy-vline 
WA_HRREWCN_S_PAY_DATA_BASIC_STR-PLVAR_H sy-vline 
WA_HRREWCN_S_PAY_DATA_BASIC_STR-OTYPE_H sy-vline 
WA_HRREWCN_S_PAY_DATA_BASIC_STR-OBJID_H sy-vline 
WA_HRREWCN_S_PAY_DATA_BASIC_STR-SHORT_H sy-vline 
WA_HRREWCN_S_PAY_DATA_BASIC_STR-STEXT_H sy-vline      INTO ld_text SEPARATED BY SPACE.

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