ABAP Select data from SAP table PKZVATRETFORTAB into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PKZVATRETFORTAB
*  INTO TABLE @DATA(IT_PKZVATRETFORTAB2).
*--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_PKZVATRETFORTAB INDEX 1 INTO DATA(WA_PKZVATRETFORTAB2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<PKZVATRETFORTAB>-MANDT = 1.
<PKZVATRETFORTAB>-STATRYRPTGENTITY = 1.
<PKZVATRETFORTAB>-STATRYRPTCATEGORY = 1.
<PKZVATRETFORTAB>-STATRYRPTRUNID = 1.
<PKZVATRETFORTAB>-LINE = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_PKZVATRETFORTAB-SUPPLIERNAME, sy-vline,
  WA_PKZVATRETFORTAB-COUNTRY, sy-vline,
  WA_PKZVATRETFORTAB-TAXNUMBER, sy-vline,
  WA_PKZVATRETFORTAB-TAXREPORTINGDATE, sy-vline,
  WA_PKZVATRETFORTAB-TAXBASEAMOUNTINCOCODECRCY, sy-vline,
  WA_PKZVATRETFORTAB-VATTOBEPAID, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_PKZVATRETFORTAB 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_PKZVATRETFORTAB 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_PKZVATRETFORTAB INTO WA_PKZVATRETFORTAB.


*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_PKZVATRETFORTAB_STR, 
MANDT TYPE STRING,
STATRYRPTGENTITY TYPE STRING,
STATRYRPTCATEGORY TYPE STRING,
STATRYRPTRUNID TYPE STRING,
LINE TYPE STRING,
SUPPLIERNAME TYPE STRING,
COUNTRY TYPE STRING,
TAXNUMBER TYPE STRING,
TAXREPORTINGDATE TYPE STRING,
TAXBASEAMOUNTINCOCODECRCY TYPE STRING,
VATTOBEPAID TYPE STRING,
PAIDVAT TYPE STRING,
TAXBASEAMOUNTINCOCODECRCYPREV TYPE STRING,
VATTOBEPAIDPREV TYPE STRING,
PAIDVATPREV TYPE STRING,
TOTALPAIDVAT TYPE STRING,
ASSIGNMENTREFERENCE TYPE STRING,
COMPANYCODE TYPE STRING,
KZ_TAXTURNOVERCODE TYPE STRING,
EXTCONTRACTNUM TYPE STRING,
EXTCONTRCTDATE TYPE STRING,
EXTCONTRCTDATEXML TYPE STRING,
CURRENCY TYPE STRING,END OF T_EKKO_STR.
DATA: WA_PKZVATRETFORTAB_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_PKZVATRETFORTAB_STR-MANDT sy-vline 
WA_PKZVATRETFORTAB_STR-STATRYRPTGENTITY sy-vline 
WA_PKZVATRETFORTAB_STR-STATRYRPTCATEGORY sy-vline 
WA_PKZVATRETFORTAB_STR-STATRYRPTRUNID sy-vline 
WA_PKZVATRETFORTAB_STR-LINE sy-vline 
WA_PKZVATRETFORTAB_STR-SUPPLIERNAME sy-vline 
WA_PKZVATRETFORTAB_STR-COUNTRY sy-vline 
WA_PKZVATRETFORTAB_STR-TAXNUMBER sy-vline 
WA_PKZVATRETFORTAB_STR-TAXREPORTINGDATE sy-vline 
WA_PKZVATRETFORTAB_STR-TAXBASEAMOUNTINCOCODECRCY sy-vline 
WA_PKZVATRETFORTAB_STR-VATTOBEPAID sy-vline 
WA_PKZVATRETFORTAB_STR-PAIDVAT sy-vline 
WA_PKZVATRETFORTAB_STR-TAXBASEAMOUNTINCOCODECRCYPREV sy-vline 
WA_PKZVATRETFORTAB_STR-VATTOBEPAIDPREV sy-vline 
WA_PKZVATRETFORTAB_STR-PAIDVATPREV sy-vline 
WA_PKZVATRETFORTAB_STR-TOTALPAIDVAT sy-vline 
WA_PKZVATRETFORTAB_STR-ASSIGNMENTREFERENCE sy-vline 
WA_PKZVATRETFORTAB_STR-COMPANYCODE sy-vline 
WA_PKZVATRETFORTAB_STR-KZ_TAXTURNOVERCODE sy-vline 
WA_PKZVATRETFORTAB_STR-EXTCONTRACTNUM sy-vline 
WA_PKZVATRETFORTAB_STR-EXTCONTRCTDATE sy-vline 
WA_PKZVATRETFORTAB_STR-EXTCONTRCTDATEXML sy-vline 
WA_PKZVATRETFORTAB_STR-CURRENCY sy-vline      INTO ld_text SEPARATED BY SPACE.

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