ABAP Select data from SAP table HRWPC_S_HEADCNT_SHOW into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM HRWPC_S_HEADCNT_SHOW
*  INTO TABLE @DATA(IT_HRWPC_S_HEADCNT_SHOW2).
*--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_HRWPC_S_HEADCNT_SHOW INDEX 1 INTO DATA(WA_HRWPC_S_HEADCNT_SHOW2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<HRWPC_S_HEADCNT_SHOW>-JOB_ID = 1.
<HRWPC_S_HEADCNT_SHOW>-JOB_STEXT = 1.
<HRWPC_S_HEADCNT_SHOW>-HEADCNT_TYPE = 1.
<HRWPC_S_HEADCNT_SHOW>-HEADCNT_TYPE_TEXT = 1.
<HRWPC_S_HEADCNT_SHOW>-AMOUNT01 = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_HRWPC_S_HEADCNT_SHOW-AMOUNT02, sy-vline,
  WA_HRWPC_S_HEADCNT_SHOW-AMOUNT03, sy-vline,
  WA_HRWPC_S_HEADCNT_SHOW-AMOUNT04, sy-vline,
  WA_HRWPC_S_HEADCNT_SHOW-AMOUNT05, sy-vline,
  WA_HRWPC_S_HEADCNT_SHOW-AMOUNT06, sy-vline,
  WA_HRWPC_S_HEADCNT_SHOW-AMOUNT07, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_HRWPC_S_HEADCNT_SHOW 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_HRWPC_S_HEADCNT_SHOW 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_HRWPC_S_HEADCNT_SHOW INTO WA_HRWPC_S_HEADCNT_SHOW.


*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_HRWPC_S_HEADCNT_SHOW_STR, 
JOB_ID TYPE STRING,
JOB_STEXT TYPE STRING,
HEADCNT_TYPE TYPE STRING,
HEADCNT_TYPE_TEXT TYPE STRING,
AMOUNT01 TYPE STRING,
AMOUNT02 TYPE STRING,
AMOUNT03 TYPE STRING,
AMOUNT04 TYPE STRING,
AMOUNT05 TYPE STRING,
AMOUNT06 TYPE STRING,
AMOUNT07 TYPE STRING,
AMOUNT08 TYPE STRING,
AMOUNT09 TYPE STRING,
AMOUNT10 TYPE STRING,
AMOUNT11 TYPE STRING,
AMOUNT12 TYPE STRING,END OF T_EKKO_STR.
DATA: WA_HRWPC_S_HEADCNT_SHOW_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_HRWPC_S_HEADCNT_SHOW_STR-JOB_ID sy-vline 
WA_HRWPC_S_HEADCNT_SHOW_STR-JOB_STEXT sy-vline 
WA_HRWPC_S_HEADCNT_SHOW_STR-HEADCNT_TYPE sy-vline 
WA_HRWPC_S_HEADCNT_SHOW_STR-HEADCNT_TYPE_TEXT sy-vline 
WA_HRWPC_S_HEADCNT_SHOW_STR-AMOUNT01 sy-vline 
WA_HRWPC_S_HEADCNT_SHOW_STR-AMOUNT02 sy-vline 
WA_HRWPC_S_HEADCNT_SHOW_STR-AMOUNT03 sy-vline 
WA_HRWPC_S_HEADCNT_SHOW_STR-AMOUNT04 sy-vline 
WA_HRWPC_S_HEADCNT_SHOW_STR-AMOUNT05 sy-vline 
WA_HRWPC_S_HEADCNT_SHOW_STR-AMOUNT06 sy-vline 
WA_HRWPC_S_HEADCNT_SHOW_STR-AMOUNT07 sy-vline 
WA_HRWPC_S_HEADCNT_SHOW_STR-AMOUNT08 sy-vline 
WA_HRWPC_S_HEADCNT_SHOW_STR-AMOUNT09 sy-vline 
WA_HRWPC_S_HEADCNT_SHOW_STR-AMOUNT10 sy-vline 
WA_HRWPC_S_HEADCNT_SHOW_STR-AMOUNT11 sy-vline 
WA_HRWPC_S_HEADCNT_SHOW_STR-AMOUNT12 sy-vline      INTO ld_text SEPARATED BY SPACE.

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