ABAP Select data from SAP table HRCA_FED_DATA into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP HRCA_FED_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 HRCA_FED_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 HRCA_FED_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_HRCA_FED_DATA TYPE STANDARD TABLE OF HRCA_FED_DATA,
      WA_HRCA_FED_DATA TYPE HRCA_FED_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: <HRCA_FED_DATA> TYPE HRCA_FED_DATA.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM HRCA_FED_DATA
*  INTO TABLE @DATA(IT_HRCA_FED_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_HRCA_FED_DATA INDEX 1 INTO DATA(WA_HRCA_FED_DATA2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<HRCA_FED_DATA>-TOTCR = 1.
<HRCA_FED_DATA>-TNIND = 1.
<HRCA_FED_DATA>-TFIND = 1.
<HRCA_FED_DATA>-ADDTX = 1.
<HRCA_FED_DATA>-TEXHD = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_HRCA_FED_DATA-MNTDE, sy-vline,
  WA_HRCA_FED_DATA-OTXCR, sy-vline,
  WA_HRCA_FED_DATA-LBTCR, sy-vline,
  WA_HRCA_FED_DATA-COMRE, sy-vline,
  WA_HRCA_FED_DATA-COMEX, sy-vline,
ENDLOOP.
   
*Add any further fields from structure WA_HRCA_FED_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_HRCA_FED_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_HRCA_FED_DATA INTO WA_HRCA_FED_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.
ENDFORM. 

*&---------------------------------------------------------------------*
*& Form process_as_string_field_values
*&---------------------------------------------------------------------*
FORM process_as_string_field_values CHANGING p_EKKO LIKE wa_EKKO.

TYPES: BEGIN OF T_HRCA_FED_DATA_STR, 
TOTCR TYPE STRING,
TNIND TYPE STRING,
TFIND TYPE STRING,
ADDTX TYPE STRING,
TEXHD TYPE STRING,
MNTDE TYPE STRING,
OTXCR TYPE STRING,
LBTCR TYPE STRING,
COMRE TYPE STRING,
COMEX TYPE STRING,END OF T_EKKO_STR.
DATA: WA_HRCA_FED_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_HRCA_FED_DATA_STR-TOTCR sy-vline 
WA_HRCA_FED_DATA_STR-TNIND sy-vline 
WA_HRCA_FED_DATA_STR-TFIND sy-vline 
WA_HRCA_FED_DATA_STR-ADDTX sy-vline 
WA_HRCA_FED_DATA_STR-TEXHD sy-vline 
WA_HRCA_FED_DATA_STR-MNTDE sy-vline 
WA_HRCA_FED_DATA_STR-OTXCR sy-vline 
WA_HRCA_FED_DATA_STR-LBTCR sy-vline 
WA_HRCA_FED_DATA_STR-COMRE sy-vline 
WA_HRCA_FED_DATA_STR-COMEX sy-vline      INTO ld_text SEPARATED BY SPACE.

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