ABAP Select data from SAP table TDS_ITEM_COMC into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM TDS_ITEM_COMC
*  INTO TABLE @DATA(IT_TDS_ITEM_COMC2).
*--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_TDS_ITEM_COMC INDEX 1 INTO DATA(WA_TDS_ITEM_COMC2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<TDS_ITEM_COMC>-HANDLE = 1.
<TDS_ITEM_COMC>-POSNR = 1.
<TDS_ITEM_COMC>-UEPOS = 1.
<TDS_ITEM_COMC>-MABNR = 1.
<TDS_ITEM_COMC>-ARKTX = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_TDS_ITEM_COMC-KDMAT, sy-vline,
  WA_TDS_ITEM_COMC-PSTYV, sy-vline,
  WA_TDS_ITEM_COMC-KWMENG, sy-vline,
  WA_TDS_ITEM_COMC-VRKME, sy-vline,
  WA_TDS_ITEM_COMC-UMVKN, sy-vline,
  WA_TDS_ITEM_COMC-UMVKZ, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_TDS_ITEM_COMC 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_TDS_ITEM_COMC 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_TDS_ITEM_COMC INTO WA_TDS_ITEM_COMC.


*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_TDS_ITEM_COMC_STR, 
HANDLE TYPE STRING,
POSNR TYPE STRING,
UEPOS TYPE STRING,
MABNR TYPE STRING,
ARKTX TYPE STRING,
KDMAT TYPE STRING,
PSTYV TYPE STRING,
KWMENG TYPE STRING,
VRKME TYPE STRING,
UMVKN TYPE STRING,
UMVKZ TYPE STRING,
ZMENG TYPE STRING,
ZIEME TYPE STRING,
UMZIZ TYPE STRING,
UMZIN TYPE STRING,
ETDAT TYPE STRING,
PRGBZ TYPE STRING,
FIXMG TYPE STRING,
WERKS TYPE STRING,
LGORT TYPE STRING,
VSTEL TYPE STRING,
ROUTE TYPE STRING,
POSEX TYPE STRING,
FAKSP TYPE STRING,
BSTKD TYPE STRING,
BSTDK TYPE STRING,
ZTERM TYPE STRING,
PRSDT TYPE STRING,
KURSK_INT TYPE STRING,
KURSK_EXT TYPE STRING,
FKDAT TYPE STRING,
INCO1 TYPE STRING,
INCO2 TYPE STRING,
INCOV TYPE STRING,
INCO2_L TYPE STRING,
INCO3_L TYPE STRING,
ABGRU TYPE STRING,
LPRIO TYPE STRING,
BRGEW TYPE STRING,
NTGEW TYPE STRING,
GEWEI TYPE STRING,
VOLUM TYPE STRING,
VOLEH TYPE STRING,
SPART TYPE STRING,
WAERK TYPE STRING,
AUFNR TYPE STRING,
PS_PSP_PNR TYPE STRING,
AWAHR TYPE STRING,
GRPOS TYPE STRING,
ZLSCH TYPE STRING,
KZTLF TYPE STRING,
ANTLF TYPE STRING,
GRKOR TYPE STRING,
CHARG TYPE STRING,
DELCO TYPE STRING,
SELKZ TYPE STRING,
PLTYP TYPE STRING,
KONDA TYPE STRING,
BZIRK TYPE STRING,
KDGRP TYPE STRING,
KONDM TYPE STRING,
BSARK TYPE STRING,
VSART TYPE STRING,
ABLAD TYPE STRING,
EMPST TYPE STRING,
MVGR1 TYPE STRING,
MVGR2 TYPE STRING,
MVGR3 TYPE STRING,
MVGR4 TYPE STRING,
MVGR5 TYPE STRING,
KDKG1 TYPE STRING,
KDKG2 TYPE STRING,
KDKG3 TYPE STRING,
KDKG4 TYPE STRING,
KDKG5 TYPE STRING,
VBELN_REF TYPE STRING,
POSNR_REF TYPE STRING,
EDATU TYPE STRING,
VALDT TYPE STRING,
VALTG TYPE STRING,
UEBTO TYPE STRING,
UNTTO TYPE STRING,
UEBTK TYPE STRING,
PRODH TYPE STRING,
MATKL TYPE STRING,
ZWERT_INT TYPE STRING,
ZWERT_EXT TYPE STRING,
WAKTION TYPE STRING,
SKOPF TYPE STRING,
BWTAR TYPE STRING,
EAN11 TYPE STRING,
GSBER TYPE STRING,
PRCTR TYPE STRING,
PCTRF TYPE STRING,
ABGRS TYPE STRING,
KALSM_K TYPE STRING,
ZSCHL_K TYPE STRING,
POSGUID TYPE STRING,
IUID_RELEVANT TYPE STRING,
AWERT TYPE STRING,
MNDID TYPE STRING,
PAY_TYPE TYPE STRING,
SEPON TYPE STRING,
PS_PSP_PNR_EXT TYPE STRING,
DUMMY_SLSDOCITEM_INCL_EEW_PS TYPE STRING,
PEROP_BEG TYPE STRING,
PEROP_END TYPE STRING,END OF T_EKKO_STR.
DATA: WA_TDS_ITEM_COMC_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_TDS_ITEM_COMC_STR-HANDLE sy-vline 
WA_TDS_ITEM_COMC_STR-POSNR sy-vline 
WA_TDS_ITEM_COMC_STR-UEPOS sy-vline 
WA_TDS_ITEM_COMC_STR-MABNR sy-vline 
WA_TDS_ITEM_COMC_STR-ARKTX sy-vline 
WA_TDS_ITEM_COMC_STR-KDMAT sy-vline 
WA_TDS_ITEM_COMC_STR-PSTYV sy-vline 
WA_TDS_ITEM_COMC_STR-KWMENG sy-vline 
WA_TDS_ITEM_COMC_STR-VRKME sy-vline 
WA_TDS_ITEM_COMC_STR-UMVKN sy-vline 
WA_TDS_ITEM_COMC_STR-UMVKZ sy-vline 
WA_TDS_ITEM_COMC_STR-ZMENG sy-vline 
WA_TDS_ITEM_COMC_STR-ZIEME sy-vline 
WA_TDS_ITEM_COMC_STR-UMZIZ sy-vline 
WA_TDS_ITEM_COMC_STR-UMZIN sy-vline 
WA_TDS_ITEM_COMC_STR-ETDAT sy-vline 
WA_TDS_ITEM_COMC_STR-PRGBZ sy-vline 
WA_TDS_ITEM_COMC_STR-FIXMG sy-vline 
WA_TDS_ITEM_COMC_STR-WERKS sy-vline 
WA_TDS_ITEM_COMC_STR-LGORT sy-vline 
WA_TDS_ITEM_COMC_STR-VSTEL sy-vline 
WA_TDS_ITEM_COMC_STR-ROUTE sy-vline 
WA_TDS_ITEM_COMC_STR-POSEX sy-vline 
WA_TDS_ITEM_COMC_STR-FAKSP sy-vline 
WA_TDS_ITEM_COMC_STR-BSTKD sy-vline 
WA_TDS_ITEM_COMC_STR-BSTDK sy-vline 
WA_TDS_ITEM_COMC_STR-ZTERM sy-vline 
WA_TDS_ITEM_COMC_STR-PRSDT sy-vline 
WA_TDS_ITEM_COMC_STR-KURSK_INT sy-vline 
WA_TDS_ITEM_COMC_STR-KURSK_EXT sy-vline 
WA_TDS_ITEM_COMC_STR-FKDAT sy-vline 
WA_TDS_ITEM_COMC_STR-INCO1 sy-vline 
WA_TDS_ITEM_COMC_STR-INCO2 sy-vline 
WA_TDS_ITEM_COMC_STR-INCOV sy-vline 
WA_TDS_ITEM_COMC_STR-INCO2_L sy-vline 
WA_TDS_ITEM_COMC_STR-INCO3_L sy-vline 
WA_TDS_ITEM_COMC_STR-ABGRU sy-vline 
WA_TDS_ITEM_COMC_STR-LPRIO sy-vline 
WA_TDS_ITEM_COMC_STR-BRGEW sy-vline 
WA_TDS_ITEM_COMC_STR-NTGEW sy-vline 
WA_TDS_ITEM_COMC_STR-GEWEI sy-vline 
WA_TDS_ITEM_COMC_STR-VOLUM sy-vline 
WA_TDS_ITEM_COMC_STR-VOLEH sy-vline 
WA_TDS_ITEM_COMC_STR-SPART sy-vline 
WA_TDS_ITEM_COMC_STR-WAERK sy-vline 
WA_TDS_ITEM_COMC_STR-AUFNR sy-vline 
WA_TDS_ITEM_COMC_STR-PS_PSP_PNR sy-vline 
WA_TDS_ITEM_COMC_STR-AWAHR sy-vline 
WA_TDS_ITEM_COMC_STR-GRPOS sy-vline 
WA_TDS_ITEM_COMC_STR-ZLSCH sy-vline 
WA_TDS_ITEM_COMC_STR-KZTLF sy-vline 
WA_TDS_ITEM_COMC_STR-ANTLF sy-vline 
WA_TDS_ITEM_COMC_STR-GRKOR sy-vline 
WA_TDS_ITEM_COMC_STR-CHARG sy-vline 
WA_TDS_ITEM_COMC_STR-DELCO sy-vline 
WA_TDS_ITEM_COMC_STR-SELKZ sy-vline 
WA_TDS_ITEM_COMC_STR-PLTYP sy-vline 
WA_TDS_ITEM_COMC_STR-KONDA sy-vline 
WA_TDS_ITEM_COMC_STR-BZIRK sy-vline 
WA_TDS_ITEM_COMC_STR-KDGRP sy-vline 
WA_TDS_ITEM_COMC_STR-KONDM sy-vline 
WA_TDS_ITEM_COMC_STR-BSARK sy-vline 
WA_TDS_ITEM_COMC_STR-VSART sy-vline 
WA_TDS_ITEM_COMC_STR-ABLAD sy-vline 
WA_TDS_ITEM_COMC_STR-EMPST sy-vline 
WA_TDS_ITEM_COMC_STR-MVGR1 sy-vline 
WA_TDS_ITEM_COMC_STR-MVGR2 sy-vline 
WA_TDS_ITEM_COMC_STR-MVGR3 sy-vline 
WA_TDS_ITEM_COMC_STR-MVGR4 sy-vline 
WA_TDS_ITEM_COMC_STR-MVGR5 sy-vline 
WA_TDS_ITEM_COMC_STR-KDKG1 sy-vline 
WA_TDS_ITEM_COMC_STR-KDKG2 sy-vline 
WA_TDS_ITEM_COMC_STR-KDKG3 sy-vline 
WA_TDS_ITEM_COMC_STR-KDKG4 sy-vline 
WA_TDS_ITEM_COMC_STR-KDKG5 sy-vline 
WA_TDS_ITEM_COMC_STR-VBELN_REF sy-vline 
WA_TDS_ITEM_COMC_STR-POSNR_REF sy-vline 
WA_TDS_ITEM_COMC_STR-EDATU sy-vline 
WA_TDS_ITEM_COMC_STR-VALDT sy-vline 
WA_TDS_ITEM_COMC_STR-VALTG sy-vline 
WA_TDS_ITEM_COMC_STR-UEBTO sy-vline 
WA_TDS_ITEM_COMC_STR-UNTTO sy-vline 
WA_TDS_ITEM_COMC_STR-UEBTK sy-vline 
WA_TDS_ITEM_COMC_STR-PRODH sy-vline 
WA_TDS_ITEM_COMC_STR-MATKL sy-vline 
WA_TDS_ITEM_COMC_STR-ZWERT_INT sy-vline 
WA_TDS_ITEM_COMC_STR-ZWERT_EXT sy-vline 
WA_TDS_ITEM_COMC_STR-WAKTION sy-vline 
WA_TDS_ITEM_COMC_STR-SKOPF sy-vline 
WA_TDS_ITEM_COMC_STR-BWTAR sy-vline 
WA_TDS_ITEM_COMC_STR-EAN11 sy-vline 
WA_TDS_ITEM_COMC_STR-GSBER sy-vline 
WA_TDS_ITEM_COMC_STR-PRCTR sy-vline 
WA_TDS_ITEM_COMC_STR-PCTRF sy-vline 
WA_TDS_ITEM_COMC_STR-ABGRS sy-vline 
WA_TDS_ITEM_COMC_STR-KALSM_K sy-vline 
WA_TDS_ITEM_COMC_STR-ZSCHL_K sy-vline 
WA_TDS_ITEM_COMC_STR-POSGUID sy-vline 
WA_TDS_ITEM_COMC_STR-IUID_RELEVANT sy-vline 
WA_TDS_ITEM_COMC_STR-AWERT sy-vline 
WA_TDS_ITEM_COMC_STR-MNDID sy-vline 
WA_TDS_ITEM_COMC_STR-PAY_TYPE sy-vline 
WA_TDS_ITEM_COMC_STR-SEPON sy-vline 
WA_TDS_ITEM_COMC_STR-PS_PSP_PNR_EXT sy-vline 
WA_TDS_ITEM_COMC_STR-DUMMY_SLSDOCITEM_INCL_EEW_PS sy-vline 
WA_TDS_ITEM_COMC_STR-PEROP_BEG sy-vline 
WA_TDS_ITEM_COMC_STR-PEROP_END sy-vline      INTO ld_text SEPARATED BY SPACE.

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