ABAP Select data from SAP table /TMF/S_R_HEADER_SCREEN into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP /TMF/S_R_HEADER_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 /TMF/S_R_HEADER_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 /TMF/S_R_HEADER_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_/TMF/S_R_HEADER_SCREEN TYPE STANDARD TABLE OF /TMF/S_R_HEADER_SCREEN,
      WA_/TMF/S_R_HEADER_SCREEN TYPE /TMF/S_R_HEADER_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: </TMF/S_R_HEADER_SCREEN> TYPE /TMF/S_R_HEADER_SCREEN.

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

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM /TMF/S_R_HEADER_SCREEN
  INTO TABLE IT_/TMF/S_R_HEADER_SCREEN.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM /TMF/S_R_HEADER_SCREEN
*  INTO TABLE @DATA(IT_/TMF/S_R_HEADER_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_/TMF/S_R_HEADER_SCREEN INDEX 1 INTO DATA(WA_/TMF/S_R_HEADER_SCREEN2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_/TMF/S_R_HEADER_SCREEN ASSIGNING </TMF/S_R_HEADER_SCREEN>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
</TMF/S_R_HEADER_SCREEN>-DISPLAY = 1.
</TMF/S_R_HEADER_SCREEN>-HISTORY = 1.
</TMF/S_R_HEADER_SCREEN>-ID_EVENTO = 1.
</TMF/S_R_HEADER_SCREEN>-CREATION = 1.
</TMF/S_R_HEADER_SCREEN>-TP_PROC = 1.

ENDLOOP.

LOOP AT IT_/TMF/S_R_HEADER_SCREEN INTO WA_/TMF/S_R_HEADER_SCREEN.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_/TMF/S_R_HEADER_SCREEN-NR_PROC, sy-vline,
  WA_/TMF/S_R_HEADER_SCREEN-INI_VALID, sy-vline,
  WA_/TMF/S_R_HEADER_SCREEN-FIM_VALID, sy-vline,
  WA_/TMF/S_R_HEADER_SCREEN-VIG_DE, sy-vline,
  WA_/TMF/S_R_HEADER_SCREEN-VIG_ATE, sy-vline,
  WA_/TMF/S_R_HEADER_SCREEN-STATUS, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_/TMF/S_R_HEADER_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_/TMF/S_R_HEADER_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_/TMF/S_R_HEADER_SCREEN INTO WA_/TMF/S_R_HEADER_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.

*Conversion exit TIMES, internal->external for field CREATION
CALL FUNCTION 'CONVERSION_EXIT_TIMES_OUTPUT'
  EXPORTING
    input =                      WA_/TMF/S_R_HEADER_SCREEN-CREATION
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/TMF/S_R_HEADER_SCREEN-CREATION.
WRITE:/ 'New Value:', ld_input.

*Conversion exit PERI, internal->external for field INI_VALID
CALL FUNCTION 'CONVERSION_EXIT_PERI_OUTPUT'
  EXPORTING
    input =                      WA_/TMF/S_R_HEADER_SCREEN-INI_VALID
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/TMF/S_R_HEADER_SCREEN-INI_VALID.
WRITE:/ 'New Value:', ld_input.

*Conversion exit PERI, internal->external for field FIM_VALID
CALL FUNCTION 'CONVERSION_EXIT_PERI_OUTPUT'
  EXPORTING
    input =                      WA_/TMF/S_R_HEADER_SCREEN-FIM_VALID
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/TMF/S_R_HEADER_SCREEN-FIM_VALID.
WRITE:/ 'New Value:', ld_input.

*Conversion exit PERI, internal->external for field FIM_VALID_NEW
CALL FUNCTION 'CONVERSION_EXIT_PERI_OUTPUT'
  EXPORTING
    input =                      WA_/TMF/S_R_HEADER_SCREEN-FIM_VALID_NEW
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/TMF/S_R_HEADER_SCREEN-FIM_VALID_NEW.
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_/TMF/S_R_HEADER_SCREEN_STR, 
DISPLAY TYPE STRING,
HISTORY TYPE STRING,
ID_EVENTO TYPE STRING,
CREATION TYPE STRING,
TP_PROC TYPE STRING,
NR_PROC TYPE STRING,
INI_VALID TYPE STRING,
FIM_VALID TYPE STRING,
VIG_DE TYPE STRING,
VIG_ATE TYPE STRING,
STATUS TYPE STRING,
STATUS_DESC TYPE STRING,
ACTION_TYPE TYPE STRING,
ACTION_TYPE_DESC TYPE STRING,
LIGHTS TYPE STRING,
EMPRESA TYPE STRING,
TP_EVENTO TYPE STRING,
FIM_VALID_NEW TYPE STRING,END OF T_EKKO_STR.
DATA: WA_/TMF/S_R_HEADER_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_/TMF/S_R_HEADER_SCREEN_STR-DISPLAY sy-vline 
WA_/TMF/S_R_HEADER_SCREEN_STR-HISTORY sy-vline 
WA_/TMF/S_R_HEADER_SCREEN_STR-ID_EVENTO sy-vline 
WA_/TMF/S_R_HEADER_SCREEN_STR-CREATION sy-vline 
WA_/TMF/S_R_HEADER_SCREEN_STR-TP_PROC sy-vline 
WA_/TMF/S_R_HEADER_SCREEN_STR-NR_PROC sy-vline 
WA_/TMF/S_R_HEADER_SCREEN_STR-INI_VALID sy-vline 
WA_/TMF/S_R_HEADER_SCREEN_STR-FIM_VALID sy-vline 
WA_/TMF/S_R_HEADER_SCREEN_STR-VIG_DE sy-vline 
WA_/TMF/S_R_HEADER_SCREEN_STR-VIG_ATE sy-vline 
WA_/TMF/S_R_HEADER_SCREEN_STR-STATUS sy-vline 
WA_/TMF/S_R_HEADER_SCREEN_STR-STATUS_DESC sy-vline 
WA_/TMF/S_R_HEADER_SCREEN_STR-ACTION_TYPE sy-vline 
WA_/TMF/S_R_HEADER_SCREEN_STR-ACTION_TYPE_DESC sy-vline 
WA_/TMF/S_R_HEADER_SCREEN_STR-LIGHTS sy-vline 
WA_/TMF/S_R_HEADER_SCREEN_STR-EMPRESA sy-vline 
WA_/TMF/S_R_HEADER_SCREEN_STR-TP_EVENTO sy-vline 
WA_/TMF/S_R_HEADER_SCREEN_STR-FIM_VALID_NEW sy-vline      INTO ld_text SEPARATED BY SPACE.

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