ABAP Select data from SAP table MTE_S_PERDIEM_DEDUCTION into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM MTE_S_PERDIEM_DEDUCTION
*  INTO TABLE @DATA(IT_MTE_S_PERDIEM_DEDUCTION2).
*--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_MTE_S_PERDIEM_DEDUCTION INDEX 1 INTO DATA(WA_MTE_S_PERDIEM_DEDUCTION2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<MTE_S_PERDIEM_DEDUCTION>-PERNR = 1.
<MTE_S_PERDIEM_DEDUCTION>-TRIPNO = 1.
<MTE_S_PERDIEM_DEDUCTION>-DISPLAY_MODE = 1.
<MTE_S_PERDIEM_DEDUCTION>-EDIT_VISIBLE = 1.
<MTE_S_PERDIEM_DEDUCTION>-DED_DATE = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_MTE_S_PERDIEM_DEDUCTION-BREAK_DE, sy-vline,
  WA_MTE_S_PERDIEM_DEDUCTION-BREAK_DE_TIME, sy-vline,
  WA_MTE_S_PERDIEM_DEDUCTION-VISIBLEBRE, sy-vline,
  WA_MTE_S_PERDIEM_DEDUCTION-INPUTBRE, sy-vline,
  WA_MTE_S_PERDIEM_DEDUCTION-REQUIREDBRE, sy-vline,
  WA_MTE_S_PERDIEM_DEDUCTION-VISIBLEBRT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_MTE_S_PERDIEM_DEDUCTION 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_MTE_S_PERDIEM_DEDUCTION 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_MTE_S_PERDIEM_DEDUCTION INTO WA_MTE_S_PERDIEM_DEDUCTION.


*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_MTE_S_PERDIEM_DEDUCTION_STR, 
PERNR TYPE STRING,
TRIPNO TYPE STRING,
DISPLAY_MODE TYPE STRING,
EDIT_VISIBLE TYPE STRING,
DED_DATE TYPE STRING,
BREAK_DE TYPE STRING,
BREAK_DE_TIME TYPE STRING,
VISIBLEBRE TYPE STRING,
INPUTBRE TYPE STRING,
REQUIREDBRE TYPE STRING,
VISIBLEBRT TYPE STRING,
INPUTBRT TYPE STRING,
REQUIREDBRT TYPE STRING,
LUNCH_DE TYPE STRING,
LUNCH_DE_TIME TYPE STRING,
VISIBLELNC TYPE STRING,
INPUTLNC TYPE STRING,
REQUIREDLNC TYPE STRING,
VISIBLELNT TYPE STRING,
INPUTLNT TYPE STRING,
REQUIREDLNT TYPE STRING,
DINNE_DE TYPE STRING,
DINNE_DE_TIME TYPE STRING,
VISIBLEDIN TYPE STRING,
INPUTDIN TYPE STRING,
REQUIREDDIN TYPE STRING,
VISIBLEDIT TYPE STRING,
INPUTDIT TYPE STRING,
REQUIREDDIT TYPE STRING,
NIGHT_DE TYPE STRING,
NIGHT_DE_TIME TYPE STRING,
VISIBLENGT TYPE STRING,
INPUTNGT TYPE STRING,
REQUIREDNGT TYPE STRING,
LU_COUPN TYPE STRING,
VISIBLECUP TYPE STRING,
INPUTCUP TYPE STRING,
REQUIREDCUP TYPE STRING,
MEALS_DE_STAGG TYPE STRING,
NIGHT_DE_STAGG TYPE STRING,
DISPLAY_ONLY TYPE STRING,
BREAK_PIK TYPE STRING,
VISIBLEBPK TYPE STRING,
INPUTBPK TYPE STRING,
REQUIREDBPK TYPE STRING,
LUNCH_PIK TYPE STRING,
VISIBLELPK TYPE STRING,
INPUTLPK TYPE STRING,
REQUIREDLPK TYPE STRING,
DINNE_PIK TYPE STRING,
VISIBLEDPK TYPE STRING,
INPUTDPK TYPE STRING,
REQUIREDDPK TYPE STRING,
BRFT_REC_NO TYPE STRING,
LNCH_REC_NO TYPE STRING,
DINN_REC_NO TYPE STRING,
MEALS_DE_STAGG_NAME TYPE STRING,
NIGHT_DE_STAGG_NAME TYPE STRING,
WEEKDAY_NAME TYPE STRING,
BREAK_DEFC TYPE STRING,
BREAK_DE_TIMEFC TYPE STRING,
LUNCH_DEFC TYPE STRING,
LUNCH_DE_TIMEFC TYPE STRING,
DINNE_DEFC TYPE STRING,
DINNE_DE_TIMEFC TYPE STRING,
NIGHT_DEFC TYPE STRING,
NIGHT_DE_TIMEFC TYPE STRING,
LU_COUPNFC TYPE STRING,
BREAK_PIKFC TYPE STRING,
LUNCH_PIKFC TYPE STRING,
DINNE_PIKFC TYPE STRING,
DUMMY_PERDIEM_DEDUCTION TYPE STRING,END OF T_EKKO_STR.
DATA: WA_MTE_S_PERDIEM_DEDUCTION_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_MTE_S_PERDIEM_DEDUCTION_STR-PERNR sy-vline 
WA_MTE_S_PERDIEM_DEDUCTION_STR-TRIPNO sy-vline 
WA_MTE_S_PERDIEM_DEDUCTION_STR-DISPLAY_MODE sy-vline 
WA_MTE_S_PERDIEM_DEDUCTION_STR-EDIT_VISIBLE sy-vline 
WA_MTE_S_PERDIEM_DEDUCTION_STR-DED_DATE sy-vline 
WA_MTE_S_PERDIEM_DEDUCTION_STR-BREAK_DE sy-vline 
WA_MTE_S_PERDIEM_DEDUCTION_STR-BREAK_DE_TIME sy-vline 
WA_MTE_S_PERDIEM_DEDUCTION_STR-VISIBLEBRE sy-vline 
WA_MTE_S_PERDIEM_DEDUCTION_STR-INPUTBRE sy-vline 
WA_MTE_S_PERDIEM_DEDUCTION_STR-REQUIREDBRE sy-vline 
WA_MTE_S_PERDIEM_DEDUCTION_STR-VISIBLEBRT sy-vline 
WA_MTE_S_PERDIEM_DEDUCTION_STR-INPUTBRT sy-vline 
WA_MTE_S_PERDIEM_DEDUCTION_STR-REQUIREDBRT sy-vline 
WA_MTE_S_PERDIEM_DEDUCTION_STR-LUNCH_DE sy-vline 
WA_MTE_S_PERDIEM_DEDUCTION_STR-LUNCH_DE_TIME sy-vline 
WA_MTE_S_PERDIEM_DEDUCTION_STR-VISIBLELNC sy-vline 
WA_MTE_S_PERDIEM_DEDUCTION_STR-INPUTLNC sy-vline 
WA_MTE_S_PERDIEM_DEDUCTION_STR-REQUIREDLNC sy-vline 
WA_MTE_S_PERDIEM_DEDUCTION_STR-VISIBLELNT sy-vline 
WA_MTE_S_PERDIEM_DEDUCTION_STR-INPUTLNT sy-vline 
WA_MTE_S_PERDIEM_DEDUCTION_STR-REQUIREDLNT sy-vline 
WA_MTE_S_PERDIEM_DEDUCTION_STR-DINNE_DE sy-vline 
WA_MTE_S_PERDIEM_DEDUCTION_STR-DINNE_DE_TIME sy-vline 
WA_MTE_S_PERDIEM_DEDUCTION_STR-VISIBLEDIN sy-vline 
WA_MTE_S_PERDIEM_DEDUCTION_STR-INPUTDIN sy-vline 
WA_MTE_S_PERDIEM_DEDUCTION_STR-REQUIREDDIN sy-vline 
WA_MTE_S_PERDIEM_DEDUCTION_STR-VISIBLEDIT sy-vline 
WA_MTE_S_PERDIEM_DEDUCTION_STR-INPUTDIT sy-vline 
WA_MTE_S_PERDIEM_DEDUCTION_STR-REQUIREDDIT sy-vline 
WA_MTE_S_PERDIEM_DEDUCTION_STR-NIGHT_DE sy-vline 
WA_MTE_S_PERDIEM_DEDUCTION_STR-NIGHT_DE_TIME sy-vline 
WA_MTE_S_PERDIEM_DEDUCTION_STR-VISIBLENGT sy-vline 
WA_MTE_S_PERDIEM_DEDUCTION_STR-INPUTNGT sy-vline 
WA_MTE_S_PERDIEM_DEDUCTION_STR-REQUIREDNGT sy-vline 
WA_MTE_S_PERDIEM_DEDUCTION_STR-LU_COUPN sy-vline 
WA_MTE_S_PERDIEM_DEDUCTION_STR-VISIBLECUP sy-vline 
WA_MTE_S_PERDIEM_DEDUCTION_STR-INPUTCUP sy-vline 
WA_MTE_S_PERDIEM_DEDUCTION_STR-REQUIREDCUP sy-vline 
WA_MTE_S_PERDIEM_DEDUCTION_STR-MEALS_DE_STAGG sy-vline 
WA_MTE_S_PERDIEM_DEDUCTION_STR-NIGHT_DE_STAGG sy-vline 
WA_MTE_S_PERDIEM_DEDUCTION_STR-DISPLAY_ONLY sy-vline 
WA_MTE_S_PERDIEM_DEDUCTION_STR-BREAK_PIK sy-vline 
WA_MTE_S_PERDIEM_DEDUCTION_STR-VISIBLEBPK sy-vline 
WA_MTE_S_PERDIEM_DEDUCTION_STR-INPUTBPK sy-vline 
WA_MTE_S_PERDIEM_DEDUCTION_STR-REQUIREDBPK sy-vline 
WA_MTE_S_PERDIEM_DEDUCTION_STR-LUNCH_PIK sy-vline 
WA_MTE_S_PERDIEM_DEDUCTION_STR-VISIBLELPK sy-vline 
WA_MTE_S_PERDIEM_DEDUCTION_STR-INPUTLPK sy-vline 
WA_MTE_S_PERDIEM_DEDUCTION_STR-REQUIREDLPK sy-vline 
WA_MTE_S_PERDIEM_DEDUCTION_STR-DINNE_PIK sy-vline 
WA_MTE_S_PERDIEM_DEDUCTION_STR-VISIBLEDPK sy-vline 
WA_MTE_S_PERDIEM_DEDUCTION_STR-INPUTDPK sy-vline 
WA_MTE_S_PERDIEM_DEDUCTION_STR-REQUIREDDPK sy-vline 
WA_MTE_S_PERDIEM_DEDUCTION_STR-BRFT_REC_NO sy-vline 
WA_MTE_S_PERDIEM_DEDUCTION_STR-LNCH_REC_NO sy-vline 
WA_MTE_S_PERDIEM_DEDUCTION_STR-DINN_REC_NO sy-vline 
WA_MTE_S_PERDIEM_DEDUCTION_STR-MEALS_DE_STAGG_NAME sy-vline 
WA_MTE_S_PERDIEM_DEDUCTION_STR-NIGHT_DE_STAGG_NAME sy-vline 
WA_MTE_S_PERDIEM_DEDUCTION_STR-WEEKDAY_NAME sy-vline 
WA_MTE_S_PERDIEM_DEDUCTION_STR-BREAK_DEFC sy-vline 
WA_MTE_S_PERDIEM_DEDUCTION_STR-BREAK_DE_TIMEFC sy-vline 
WA_MTE_S_PERDIEM_DEDUCTION_STR-LUNCH_DEFC sy-vline 
WA_MTE_S_PERDIEM_DEDUCTION_STR-LUNCH_DE_TIMEFC sy-vline 
WA_MTE_S_PERDIEM_DEDUCTION_STR-DINNE_DEFC sy-vline 
WA_MTE_S_PERDIEM_DEDUCTION_STR-DINNE_DE_TIMEFC sy-vline 
WA_MTE_S_PERDIEM_DEDUCTION_STR-NIGHT_DEFC sy-vline 
WA_MTE_S_PERDIEM_DEDUCTION_STR-NIGHT_DE_TIMEFC sy-vline 
WA_MTE_S_PERDIEM_DEDUCTION_STR-LU_COUPNFC sy-vline 
WA_MTE_S_PERDIEM_DEDUCTION_STR-BREAK_PIKFC sy-vline 
WA_MTE_S_PERDIEM_DEDUCTION_STR-LUNCH_PIKFC sy-vline 
WA_MTE_S_PERDIEM_DEDUCTION_STR-DINNE_PIKFC sy-vline 
WA_MTE_S_PERDIEM_DEDUCTION_STR-DUMMY_PERDIEM_DEDUCTION sy-vline      INTO ld_text SEPARATED BY SPACE.

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