ABAP Select data from SAP table HRPAYDE_EHGL_SELSCREEN into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM HRPAYDE_EHGL_SELSCREEN
*  INTO TABLE @DATA(IT_HRPAYDE_EHGL_SELSCREEN2).
*--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_HRPAYDE_EHGL_SELSCREEN INDEX 1 INTO DATA(WA_HRPAYDE_EHGL_SELSCREEN2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<HRPAYDE_EHGL_SELSCREEN>-YEAR = 1.
<HRPAYDE_EHGL_SELSCREEN>-MONTH = 1.
<HRPAYDE_EHGL_SELSCREEN>-WAERS = 1.
<HRPAYDE_EHGL_SELSCREEN>-START = 1.
<HRPAYDE_EHGL_SELSCREEN>-INT = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_HRPAYDE_EHGL_SELSCREEN-MERK, sy-vline,
  WA_HRPAYDE_EHGL_SELSCREEN-PROD, sy-vline,
  WA_HRPAYDE_EHGL_SELSCREEN-FORM, sy-vline,
  WA_HRPAYDE_EHGL_SELSCREEN-PDEST, sy-vline,
  WA_HRPAYDE_EHGL_SELSCREEN-ALV, sy-vline,
  WA_HRPAYDE_EHGL_SELSCREEN-VAR, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_HRPAYDE_EHGL_SELSCREEN 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_HRPAYDE_EHGL_SELSCREEN 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_HRPAYDE_EHGL_SELSCREEN INTO WA_HRPAYDE_EHGL_SELSCREEN.


*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 SPDEV, internal->external for field PDEST
CALL FUNCTION 'CONVERSION_EXIT_SPDEV_OUTPUT'
  EXPORTING
    input =                      WA_HRPAYDE_EHGL_SELSCREEN-PDEST
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_HRPAYDE_EHGL_SELSCREEN-PDEST.
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_HRPAYDE_EHGL_SELSCREEN_STR, 
YEAR TYPE STRING,
MONTH TYPE STRING,
WAERS TYPE STRING,
START TYPE STRING,
INT TYPE STRING,
MERK TYPE STRING,
PROD TYPE STRING,
FORM TYPE STRING,
PDEST TYPE STRING,
ALV TYPE STRING,
VAR TYPE STRING,
DATA TYPE STRING,
PPER TYPE STRING,
PMO TYPE STRING,
PYEAR TYPE STRING,
PVSE TYPE STRING,
PSEV TYPE STRING,END OF T_EKKO_STR.
DATA: WA_HRPAYDE_EHGL_SELSCREEN_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_HRPAYDE_EHGL_SELSCREEN_STR-YEAR sy-vline 
WA_HRPAYDE_EHGL_SELSCREEN_STR-MONTH sy-vline 
WA_HRPAYDE_EHGL_SELSCREEN_STR-WAERS sy-vline 
WA_HRPAYDE_EHGL_SELSCREEN_STR-START sy-vline 
WA_HRPAYDE_EHGL_SELSCREEN_STR-INT sy-vline 
WA_HRPAYDE_EHGL_SELSCREEN_STR-MERK sy-vline 
WA_HRPAYDE_EHGL_SELSCREEN_STR-PROD sy-vline 
WA_HRPAYDE_EHGL_SELSCREEN_STR-FORM sy-vline 
WA_HRPAYDE_EHGL_SELSCREEN_STR-PDEST sy-vline 
WA_HRPAYDE_EHGL_SELSCREEN_STR-ALV sy-vline 
WA_HRPAYDE_EHGL_SELSCREEN_STR-VAR sy-vline 
WA_HRPAYDE_EHGL_SELSCREEN_STR-DATA sy-vline 
WA_HRPAYDE_EHGL_SELSCREEN_STR-PPER sy-vline 
WA_HRPAYDE_EHGL_SELSCREEN_STR-PMO sy-vline 
WA_HRPAYDE_EHGL_SELSCREEN_STR-PYEAR sy-vline 
WA_HRPAYDE_EHGL_SELSCREEN_STR-PVSE sy-vline 
WA_HRPAYDE_EHGL_SELSCREEN_STR-PSEV sy-vline      INTO ld_text SEPARATED BY SPACE.

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