ABAP Select data from SAP table HRESS_CLMS_HEADER_VAL into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP HRESS_CLMS_HEADER_VAL 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_CLMS_HEADER_VAL. 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_CLMS_HEADER_VAL 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_CLMS_HEADER_VAL TYPE STANDARD TABLE OF HRESS_CLMS_HEADER_VAL,
      WA_HRESS_CLMS_HEADER_VAL TYPE HRESS_CLMS_HEADER_VAL,
      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_CLMS_HEADER_VAL> TYPE HRESS_CLMS_HEADER_VAL.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM HRESS_CLMS_HEADER_VAL
*  INTO TABLE @DATA(IT_HRESS_CLMS_HEADER_VAL2).
*--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_CLMS_HEADER_VAL INDEX 1 INTO DATA(WA_HRESS_CLMS_HEADER_VAL2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<HRESS_CLMS_HEADER_VAL>-RETYP = 1.
<HRESS_CLMS_HEADER_VAL>-RQTYP = 1.
<HRESS_CLMS_HEADER_VAL>-SCMCD = 1.
<HRESS_CLMS_HEADER_VAL>-REFNR = 1.
<HRESS_CLMS_HEADER_VAL>-RQAMT = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_HRESS_CLMS_HEADER_VAL-APAMT, sy-vline,
  WA_HRESS_CLMS_HEADER_VAL-RQNUM, sy-vline,
  WA_HRESS_CLMS_HEADER_VAL-APNUM, sy-vline,
  WA_HRESS_CLMS_HEADER_VAL-ASREF, sy-vline,
  WA_HRESS_CLMS_HEADER_VAL-TSR01, sy-vline,
  WA_HRESS_CLMS_HEADER_VAL-TSR02, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_HRESS_CLMS_HEADER_VAL 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_CLMS_HEADER_VAL 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_CLMS_HEADER_VAL INTO WA_HRESS_CLMS_HEADER_VAL.


*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_CLMS_HEADER_VAL_STR, 
RETYP TYPE STRING,
RQTYP TYPE STRING,
SCMCD TYPE STRING,
REFNR TYPE STRING,
RQAMT TYPE STRING,
APAMT TYPE STRING,
RQNUM TYPE STRING,
APNUM TYPE STRING,
ASREF TYPE STRING,
TSR01 TYPE STRING,
TSR02 TYPE STRING,
OCFLG TYPE STRING,
TEXRQ TYPE STRING,
OCPVD TYPE STRING,
PCLMD TYPE STRING,
BEGDA TYPE STRING,
ENNDA TYPE STRING,
RQTEX TYPE STRING,
APTEX TYPE STRING,
DCLAG TYPE STRING,
REMRK TYPE STRING,
LTCBL TYPE STRING,END OF T_EKKO_STR.
DATA: WA_HRESS_CLMS_HEADER_VAL_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_CLMS_HEADER_VAL_STR-RETYP sy-vline 
WA_HRESS_CLMS_HEADER_VAL_STR-RQTYP sy-vline 
WA_HRESS_CLMS_HEADER_VAL_STR-SCMCD sy-vline 
WA_HRESS_CLMS_HEADER_VAL_STR-REFNR sy-vline 
WA_HRESS_CLMS_HEADER_VAL_STR-RQAMT sy-vline 
WA_HRESS_CLMS_HEADER_VAL_STR-APAMT sy-vline 
WA_HRESS_CLMS_HEADER_VAL_STR-RQNUM sy-vline 
WA_HRESS_CLMS_HEADER_VAL_STR-APNUM sy-vline 
WA_HRESS_CLMS_HEADER_VAL_STR-ASREF sy-vline 
WA_HRESS_CLMS_HEADER_VAL_STR-TSR01 sy-vline 
WA_HRESS_CLMS_HEADER_VAL_STR-TSR02 sy-vline 
WA_HRESS_CLMS_HEADER_VAL_STR-OCFLG sy-vline 
WA_HRESS_CLMS_HEADER_VAL_STR-TEXRQ sy-vline 
WA_HRESS_CLMS_HEADER_VAL_STR-OCPVD sy-vline 
WA_HRESS_CLMS_HEADER_VAL_STR-PCLMD sy-vline 
WA_HRESS_CLMS_HEADER_VAL_STR-BEGDA sy-vline 
WA_HRESS_CLMS_HEADER_VAL_STR-ENNDA sy-vline 
WA_HRESS_CLMS_HEADER_VAL_STR-RQTEX sy-vline 
WA_HRESS_CLMS_HEADER_VAL_STR-APTEX sy-vline 
WA_HRESS_CLMS_HEADER_VAL_STR-DCLAG sy-vline 
WA_HRESS_CLMS_HEADER_VAL_STR-REMRK sy-vline 
WA_HRESS_CLMS_HEADER_VAL_STR-LTCBL sy-vline      INTO ld_text SEPARATED BY SPACE.

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