ABAP Select data from SAP table HRESS_S_CLMS_RETEL into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM HRESS_S_CLMS_RETEL
*  INTO TABLE @DATA(IT_HRESS_S_CLMS_RETEL2).
*--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_HRESS_S_CLMS_RETEL INDEX 1 INTO DATA(WA_HRESS_S_CLMS_RETEL2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<HRESS_S_CLMS_RETEL>-PERNR = 1.
<HRESS_S_CLMS_RETEL>-TAXCD = 1.
<HRESS_S_CLMS_RETEL>-ENDTE = 1.
<HRESS_S_CLMS_RETEL>-BGDTE = 1.
<HRESS_S_CLMS_RETEL>-TOTAM = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_HRESS_S_CLMS_RETEL-CRTAM, sy-vline,
  WA_HRESS_S_CLMS_RETEL-UNPAM, sy-vline,
  WA_HRESS_S_CLMS_RETEL-BALAM, sy-vline,
  WA_HRESS_S_CLMS_RETEL-UNIT, sy-vline,
  WA_HRESS_S_CLMS_RETEL-ISAMT, sy-vline,
  WA_HRESS_S_CLMS_RETEL-ISOAC, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_HRESS_S_CLMS_RETEL 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_HRESS_S_CLMS_RETEL 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_HRESS_S_CLMS_RETEL INTO WA_HRESS_S_CLMS_RETEL.


*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_HRESS_S_CLMS_RETEL_STR, 
PERNR TYPE STRING,
TAXCD TYPE STRING,
ENDTE TYPE STRING,
BGDTE TYPE STRING,
TOTAM TYPE STRING,
CRTAM TYPE STRING,
UNPAM TYPE STRING,
BALAM TYPE STRING,
UNIT TYPE STRING,
ISAMT TYPE STRING,
ISOAC TYPE STRING,END OF T_EKKO_STR.
DATA: WA_HRESS_S_CLMS_RETEL_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_HRESS_S_CLMS_RETEL_STR-PERNR sy-vline 
WA_HRESS_S_CLMS_RETEL_STR-TAXCD sy-vline 
WA_HRESS_S_CLMS_RETEL_STR-ENDTE sy-vline 
WA_HRESS_S_CLMS_RETEL_STR-BGDTE sy-vline 
WA_HRESS_S_CLMS_RETEL_STR-TOTAM sy-vline 
WA_HRESS_S_CLMS_RETEL_STR-CRTAM sy-vline 
WA_HRESS_S_CLMS_RETEL_STR-UNPAM sy-vline 
WA_HRESS_S_CLMS_RETEL_STR-BALAM sy-vline 
WA_HRESS_S_CLMS_RETEL_STR-UNIT sy-vline 
WA_HRESS_S_CLMS_RETEL_STR-ISAMT sy-vline 
WA_HRESS_S_CLMS_RETEL_STR-ISOAC sy-vline      INTO ld_text SEPARATED BY SPACE.

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