ABAP Select data from SAP table PEG_TACTASSD into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PEG_TACTASSD
*  INTO TABLE @DATA(IT_PEG_TACTASSD2).
*--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_PEG_TACTASSD INDEX 1 INTO DATA(WA_PEG_TACTASSD2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<PEG_TACTASSD>-MANDT = 1.
<PEG_TACTASSD>-WERKS = 1.
<PEG_TACTASSD>-MATNR = 1.
<PEG_TACTASSD>-GRPNR = 1.
<PEG_TACTASSD>-S_REPOBJ = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_PEG_TACTASSD-R_REPOBJ, sy-vline,
  WA_PEG_TACTASSD-ASS_PSPNR, sy-vline,
  WA_PEG_TACTASSD-CHARG, sy-vline,
  WA_PEG_TACTASSD-TLLONR, sy-vline,
  WA_PEG_TACTASSD-ISSQTY, sy-vline,
  WA_PEG_TACTASSD-MEINS, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_PEG_TACTASSD 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_PEG_TACTASSD 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_PEG_TACTASSD INTO WA_PEG_TACTASSD.


*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 MATN1, internal->external for field MATNR
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_PEG_TACTASSD-MATNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PEG_TACTASSD-MATNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ABPSP, internal->external for field GRPNR
CALL FUNCTION 'CONVERSION_EXIT_ABPSP_OUTPUT'
  EXPORTING
    input =                      WA_PEG_TACTASSD-GRPNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PEG_TACTASSD-GRPNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ABPSP, internal->external for field ASS_PSPNR
CALL FUNCTION 'CONVERSION_EXIT_ABPSP_OUTPUT'
  EXPORTING
    input =                      WA_PEG_TACTASSD-ASS_PSPNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PEG_TACTASSD-ASS_PSPNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field MEINS
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_PEG_TACTASSD-MEINS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PEG_TACTASSD-MEINS.
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_PEG_TACTASSD_STR, 
MANDT TYPE STRING,
WERKS TYPE STRING,
MATNR TYPE STRING,
GRPNR TYPE STRING,
S_REPOBJ TYPE STRING,
R_REPOBJ TYPE STRING,
ASS_PSPNR TYPE STRING,
CHARG TYPE STRING,
TLLONR TYPE STRING,
ISSQTY TYPE STRING,
MEINS TYPE STRING,
RSNUM TYPE STRING,
RSPOS TYPE STRING,
RSART TYPE STRING,
WOCOST TYPE STRING,
RESDT TYPE STRING,
LOEVM TYPE STRING,
PEGISSUE TYPE STRING,
REPOBJ_H TYPE STRING,
OBJ_TYPE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_PEG_TACTASSD_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_PEG_TACTASSD_STR-MANDT sy-vline 
WA_PEG_TACTASSD_STR-WERKS sy-vline 
WA_PEG_TACTASSD_STR-MATNR sy-vline 
WA_PEG_TACTASSD_STR-GRPNR sy-vline 
WA_PEG_TACTASSD_STR-S_REPOBJ sy-vline 
WA_PEG_TACTASSD_STR-R_REPOBJ sy-vline 
WA_PEG_TACTASSD_STR-ASS_PSPNR sy-vline 
WA_PEG_TACTASSD_STR-CHARG sy-vline 
WA_PEG_TACTASSD_STR-TLLONR sy-vline 
WA_PEG_TACTASSD_STR-ISSQTY sy-vline 
WA_PEG_TACTASSD_STR-MEINS sy-vline 
WA_PEG_TACTASSD_STR-RSNUM sy-vline 
WA_PEG_TACTASSD_STR-RSPOS sy-vline 
WA_PEG_TACTASSD_STR-RSART sy-vline 
WA_PEG_TACTASSD_STR-WOCOST sy-vline 
WA_PEG_TACTASSD_STR-RESDT sy-vline 
WA_PEG_TACTASSD_STR-LOEVM sy-vline 
WA_PEG_TACTASSD_STR-PEGISSUE sy-vline 
WA_PEG_TACTASSD_STR-REPOBJ_H sy-vline 
WA_PEG_TACTASSD_STR-OBJ_TYPE sy-vline      INTO ld_text SEPARATED BY SPACE.

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