ABAP Select data from SAP table HRVUS_DIALOG_SCREEN into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM HRVUS_DIALOG_SCREEN
*  INTO TABLE @DATA(IT_HRVUS_DIALOG_SCREEN2).
*--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_HRVUS_DIALOG_SCREEN INDEX 1 INTO DATA(WA_HRVUS_DIALOG_SCREEN2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<HRVUS_DIALOG_SCREEN>-PLVAR = 1.
<HRVUS_DIALOG_SCREEN>-MDC_ACC_L = 1.
<HRVUS_DIALOG_SCREEN>-MDC_ACC_D = 1.
<HRVUS_DIALOG_SCREEN>-MDC_ACC_SRK = 1.
<HRVUS_DIALOG_SCREEN>-MDC_ACC_STEXT = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_HRVUS_DIALOG_SCREEN-MDC_BEGDA, sy-vline,
  WA_HRVUS_DIALOG_SCREEN-MDC_ENDDA, sy-vline,
  WA_HRVUS_DIALOG_SCREEN-MDC_BEGDA_VAR, sy-vline,
  WA_HRVUS_DIALOG_SCREEN-MDC_ENDDA_VAR, sy-vline,
  WA_HRVUS_DIALOG_SCREEN-MDC_DATE_VAR, sy-vline,
  WA_HRVUS_DIALOG_SCREEN-MEN_ACC_L, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_HRVUS_DIALOG_SCREEN 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_HRVUS_DIALOG_SCREEN 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_HRVUS_DIALOG_SCREEN INTO WA_HRVUS_DIALOG_SCREEN.


*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_HRVUS_DIALOG_SCREEN_STR, 
PLVAR TYPE STRING,
MDC_ACC_L TYPE STRING,
MDC_ACC_D TYPE STRING,
MDC_ACC_SRK TYPE STRING,
MDC_ACC_STEXT TYPE STRING,
MDC_BEGDA TYPE STRING,
MDC_ENDDA TYPE STRING,
MDC_BEGDA_VAR TYPE STRING,
MDC_ENDDA_VAR TYPE STRING,
MDC_DATE_VAR TYPE STRING,
MEN_ACC_L TYPE STRING,
MEN_ACC_D TYPE STRING,
MEN_ACC_SRK TYPE STRING,
MEN_ACC_STEXT TYPE STRING,
MEN_BEGDA TYPE STRING,
MEN_ENDDA TYPE STRING,
MEN_BEGDA_VAR TYPE STRING,
MEN_ENDDA_VAR TYPE STRING,
MEN_DATE_VAR TYPE STRING,
MPL_ACC_L TYPE STRING,
MPL_ACC_D TYPE STRING,
MPL_ACC_SRK TYPE STRING,
MPL_ACC_STEXT TYPE STRING,
MPL_BEGDA TYPE STRING,
MPL_ENDDA TYPE STRING,
MPL_BEGDA_VAR TYPE STRING,
MPL_ENDDA_VAR TYPE STRING,
MPL_DATE_VAR TYPE STRING,
MRE_ACC_R TYPE STRING,
MRE_ACC_G TYPE STRING,
MRE_ACC_SRK TYPE STRING,
MRE_ACC_STEXT TYPE STRING,
MRE_BEGDA TYPE STRING,
MRE_ENDDA TYPE STRING,
MRE_BEGDA_VAR TYPE STRING,
MRE_ENDDA_VAR TYPE STRING,
MRE_DATE_VAR TYPE STRING,
MTO_ACC_L TYPE STRING,
MTO_ACC_D TYPE STRING,
MTO_ACC_SRK TYPE STRING,
MTO_ACC_STEXT TYPE STRING,
MTO_BEGDA TYPE STRING,
MTO_ENDDA TYPE STRING,
MTO_BEGDA_VAR TYPE STRING,
MTO_ENDDA_VAR TYPE STRING,
MTO_DATE_VAR TYPE STRING,
SHORT TYPE STRING,
OTYPE TYPE STRING,
LOC_OBJID TYPE STRING,
LOC_STEXT TYPE STRING,
LOC_SEARK TYPE STRING,END OF T_EKKO_STR.
DATA: WA_HRVUS_DIALOG_SCREEN_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_HRVUS_DIALOG_SCREEN_STR-PLVAR sy-vline 
WA_HRVUS_DIALOG_SCREEN_STR-MDC_ACC_L sy-vline 
WA_HRVUS_DIALOG_SCREEN_STR-MDC_ACC_D sy-vline 
WA_HRVUS_DIALOG_SCREEN_STR-MDC_ACC_SRK sy-vline 
WA_HRVUS_DIALOG_SCREEN_STR-MDC_ACC_STEXT sy-vline 
WA_HRVUS_DIALOG_SCREEN_STR-MDC_BEGDA sy-vline 
WA_HRVUS_DIALOG_SCREEN_STR-MDC_ENDDA sy-vline 
WA_HRVUS_DIALOG_SCREEN_STR-MDC_BEGDA_VAR sy-vline 
WA_HRVUS_DIALOG_SCREEN_STR-MDC_ENDDA_VAR sy-vline 
WA_HRVUS_DIALOG_SCREEN_STR-MDC_DATE_VAR sy-vline 
WA_HRVUS_DIALOG_SCREEN_STR-MEN_ACC_L sy-vline 
WA_HRVUS_DIALOG_SCREEN_STR-MEN_ACC_D sy-vline 
WA_HRVUS_DIALOG_SCREEN_STR-MEN_ACC_SRK sy-vline 
WA_HRVUS_DIALOG_SCREEN_STR-MEN_ACC_STEXT sy-vline 
WA_HRVUS_DIALOG_SCREEN_STR-MEN_BEGDA sy-vline 
WA_HRVUS_DIALOG_SCREEN_STR-MEN_ENDDA sy-vline 
WA_HRVUS_DIALOG_SCREEN_STR-MEN_BEGDA_VAR sy-vline 
WA_HRVUS_DIALOG_SCREEN_STR-MEN_ENDDA_VAR sy-vline 
WA_HRVUS_DIALOG_SCREEN_STR-MEN_DATE_VAR sy-vline 
WA_HRVUS_DIALOG_SCREEN_STR-MPL_ACC_L sy-vline 
WA_HRVUS_DIALOG_SCREEN_STR-MPL_ACC_D sy-vline 
WA_HRVUS_DIALOG_SCREEN_STR-MPL_ACC_SRK sy-vline 
WA_HRVUS_DIALOG_SCREEN_STR-MPL_ACC_STEXT sy-vline 
WA_HRVUS_DIALOG_SCREEN_STR-MPL_BEGDA sy-vline 
WA_HRVUS_DIALOG_SCREEN_STR-MPL_ENDDA sy-vline 
WA_HRVUS_DIALOG_SCREEN_STR-MPL_BEGDA_VAR sy-vline 
WA_HRVUS_DIALOG_SCREEN_STR-MPL_ENDDA_VAR sy-vline 
WA_HRVUS_DIALOG_SCREEN_STR-MPL_DATE_VAR sy-vline 
WA_HRVUS_DIALOG_SCREEN_STR-MRE_ACC_R sy-vline 
WA_HRVUS_DIALOG_SCREEN_STR-MRE_ACC_G sy-vline 
WA_HRVUS_DIALOG_SCREEN_STR-MRE_ACC_SRK sy-vline 
WA_HRVUS_DIALOG_SCREEN_STR-MRE_ACC_STEXT sy-vline 
WA_HRVUS_DIALOG_SCREEN_STR-MRE_BEGDA sy-vline 
WA_HRVUS_DIALOG_SCREEN_STR-MRE_ENDDA sy-vline 
WA_HRVUS_DIALOG_SCREEN_STR-MRE_BEGDA_VAR sy-vline 
WA_HRVUS_DIALOG_SCREEN_STR-MRE_ENDDA_VAR sy-vline 
WA_HRVUS_DIALOG_SCREEN_STR-MRE_DATE_VAR sy-vline 
WA_HRVUS_DIALOG_SCREEN_STR-MTO_ACC_L sy-vline 
WA_HRVUS_DIALOG_SCREEN_STR-MTO_ACC_D sy-vline 
WA_HRVUS_DIALOG_SCREEN_STR-MTO_ACC_SRK sy-vline 
WA_HRVUS_DIALOG_SCREEN_STR-MTO_ACC_STEXT sy-vline 
WA_HRVUS_DIALOG_SCREEN_STR-MTO_BEGDA sy-vline 
WA_HRVUS_DIALOG_SCREEN_STR-MTO_ENDDA sy-vline 
WA_HRVUS_DIALOG_SCREEN_STR-MTO_BEGDA_VAR sy-vline 
WA_HRVUS_DIALOG_SCREEN_STR-MTO_ENDDA_VAR sy-vline 
WA_HRVUS_DIALOG_SCREEN_STR-MTO_DATE_VAR sy-vline 
WA_HRVUS_DIALOG_SCREEN_STR-SHORT sy-vline 
WA_HRVUS_DIALOG_SCREEN_STR-OTYPE sy-vline 
WA_HRVUS_DIALOG_SCREEN_STR-LOC_OBJID sy-vline 
WA_HRVUS_DIALOG_SCREEN_STR-LOC_STEXT sy-vline 
WA_HRVUS_DIALOG_SCREEN_STR-LOC_SEARK sy-vline      INTO ld_text SEPARATED BY SPACE.

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