ABAP Select data from SAP table IPSTAXOBLIG into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM IPSTAXOBLIG
*  INTO TABLE @DATA(IT_IPSTAXOBLIG2).
*--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_IPSTAXOBLIG INDEX 1 INTO DATA(WA_IPSTAXOBLIG2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<IPSTAXOBLIG>-MANDT = 1.
<IPSTAXOBLIG>-PUBLICSECTOROBJECTTYPE = 1.
<IPSTAXOBLIG>-PUBLICSECTOROBJECT = 1.
<IPSTAXOBLIG>-PUBLICSECTORFACTTYPESEQUENCE = 1.
<IPSTAXOBLIG>-PUBSECFACTTYPEREPETITION = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_IPSTAXOBLIG-PUBSECFACTVALDTYENDDTETME, sy-vline,
  WA_IPSTAXOBLIG-PUBLICSECTORFACTSET, sy-vline,
  WA_IPSTAXOBLIG-PUBLICSECTORFACTTYPE, sy-vline,
  WA_IPSTAXOBLIG-TAXPAYER, sy-vline,
  WA_IPSTAXOBLIG-TAXPAYERACCOUNT, sy-vline,
  WA_IPSTAXOBLIG-TAXPAYERCONTRACT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_IPSTAXOBLIG 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_IPSTAXOBLIG 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_IPSTAXOBLIG INTO WA_IPSTAXOBLIG.


*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 ALPHA, internal->external for field TAXPAYER
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_IPSTAXOBLIG-TAXPAYER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IPSTAXOBLIG-TAXPAYER.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field TAXPAYERACCOUNT
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_IPSTAXOBLIG-TAXPAYERACCOUNT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IPSTAXOBLIG-TAXPAYERACCOUNT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field TAXPAYERCONTRACT
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_IPSTAXOBLIG-TAXPAYERCONTRACT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IPSTAXOBLIG-TAXPAYERCONTRACT.
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_IPSTAXOBLIG_STR, 
MANDT TYPE STRING,
PUBLICSECTOROBJECTTYPE TYPE STRING,
PUBLICSECTOROBJECT TYPE STRING,
PUBLICSECTORFACTTYPESEQUENCE TYPE STRING,
PUBSECFACTTYPEREPETITION TYPE STRING,
PUBSECFACTVALDTYENDDTETME TYPE STRING,
PUBLICSECTORFACTSET TYPE STRING,
PUBLICSECTORFACTTYPE TYPE STRING,
TAXPAYER TYPE STRING,
TAXPAYERACCOUNT TYPE STRING,
TAXPAYERCONTRACT TYPE STRING,
PUBSECREGNVALDTYSTARTDATE TYPE STRING,
PUBSECREGNVALDTYENDDATE TYPE STRING,
PUBLICSECTORREVENUETYPE TYPE STRING,
NROFPUBSECACTIVEREGISTRATIONS TYPE STRING,END OF T_EKKO_STR.
DATA: WA_IPSTAXOBLIG_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_IPSTAXOBLIG_STR-MANDT sy-vline 
WA_IPSTAXOBLIG_STR-PUBLICSECTOROBJECTTYPE sy-vline 
WA_IPSTAXOBLIG_STR-PUBLICSECTOROBJECT sy-vline 
WA_IPSTAXOBLIG_STR-PUBLICSECTORFACTTYPESEQUENCE sy-vline 
WA_IPSTAXOBLIG_STR-PUBSECFACTTYPEREPETITION sy-vline 
WA_IPSTAXOBLIG_STR-PUBSECFACTVALDTYENDDTETME sy-vline 
WA_IPSTAXOBLIG_STR-PUBLICSECTORFACTSET sy-vline 
WA_IPSTAXOBLIG_STR-PUBLICSECTORFACTTYPE sy-vline 
WA_IPSTAXOBLIG_STR-TAXPAYER sy-vline 
WA_IPSTAXOBLIG_STR-TAXPAYERACCOUNT sy-vline 
WA_IPSTAXOBLIG_STR-TAXPAYERCONTRACT sy-vline 
WA_IPSTAXOBLIG_STR-PUBSECREGNVALDTYSTARTDATE sy-vline 
WA_IPSTAXOBLIG_STR-PUBSECREGNVALDTYENDDATE sy-vline 
WA_IPSTAXOBLIG_STR-PUBLICSECTORREVENUETYPE sy-vline 
WA_IPSTAXOBLIG_STR-NROFPUBSECACTIVEREGISTRATIONS sy-vline      INTO ld_text SEPARATED BY SPACE.

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