ABAP Select data from SAP table RETM_POSTING_PY into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM RETM_POSTING_PY
*  INTO TABLE @DATA(IT_RETM_POSTING_PY2).
*--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_RETM_POSTING_PY INDEX 1 INTO DATA(WA_RETM_POSTING_PY2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<RETM_POSTING_PY>-MANDT = 1.
<RETM_POSTING_PY>-INTRENO = 1.
<RETM_POSTING_PY>-TERMTYPE = 1.
<RETM_POSTING_PY>-TERMNO = 1.
<RETM_POSTING_PY>-VALIDFROM = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_RETM_POSTING_PY-VALIDTO, sy-vline,
  WA_RETM_POSTING_PY-PYMTMETH, sy-vline,
  WA_RETM_POSTING_PY-PYMTMETHCRMO, sy-vline,
  WA_RETM_POSTING_PY-PYMTBLOCK, sy-vline,
  WA_RETM_POSTING_PY-PYMTTERM, sy-vline,
  WA_RETM_POSTING_PY-HOUSEBKID, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_RETM_POSTING_PY 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_RETM_POSTING_PY 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_RETM_POSTING_PY INTO WA_RETM_POSTING_PY.


*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 TERMNO
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RETM_POSTING_PY-TERMNO
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RETM_POSTING_PY-TERMNO.
WRITE:/ 'New Value:', ld_input.

*Conversion exit REDAT, internal->external for field VALIDTO
CALL FUNCTION 'CONVERSION_EXIT_REDAT_OUTPUT'
  EXPORTING
    input =                      WA_RETM_POSTING_PY-VALIDTO
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RETM_POSTING_PY-VALIDTO.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field PARTNER
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RETM_POSTING_PY-PARTNER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RETM_POSTING_PY-PARTNER.
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_RETM_POSTING_PY_STR, 
MANDT TYPE STRING,
INTRENO TYPE STRING,
TERMTYPE TYPE STRING,
TERMNO TYPE STRING,
VALIDFROM TYPE STRING,
VALIDTO TYPE STRING,
PYMTMETH TYPE STRING,
PYMTMETHCRMO TYPE STRING,
PYMTBLOCK TYPE STRING,
PYMTTERM TYPE STRING,
HOUSEBKID TYPE STRING,
HOUSEBKACC TYPE STRING,
BANKDETAILID TYPE STRING,
NOTETOPAYEE TYPE STRING,
DUNNAREA TYPE STRING,
DUNNKEY TYPE STRING,
DUNNBLOCK TYPE STRING,
ACCDETKEY TYPE STRING,
TAXTYPE TYPE STRING,
TAXGROUP TYPE STRING,
ISGROSS TYPE STRING,
TAXCOUNTRY TYPE STRING,
PARTNER TYPE STRING,
PARTNEROBJNR TYPE STRING,
TXJCD TYPE STRING,
ISCDSPLIT TYPE STRING,
CTRULE TYPE STRING,
ISPARTNERBLOCKED TYPE STRING,
SEPAMNDID TYPE STRING,
SEPARECCRDID TYPE STRING,END OF T_EKKO_STR.
DATA: WA_RETM_POSTING_PY_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_RETM_POSTING_PY_STR-MANDT sy-vline 
WA_RETM_POSTING_PY_STR-INTRENO sy-vline 
WA_RETM_POSTING_PY_STR-TERMTYPE sy-vline 
WA_RETM_POSTING_PY_STR-TERMNO sy-vline 
WA_RETM_POSTING_PY_STR-VALIDFROM sy-vline 
WA_RETM_POSTING_PY_STR-VALIDTO sy-vline 
WA_RETM_POSTING_PY_STR-PYMTMETH sy-vline 
WA_RETM_POSTING_PY_STR-PYMTMETHCRMO sy-vline 
WA_RETM_POSTING_PY_STR-PYMTBLOCK sy-vline 
WA_RETM_POSTING_PY_STR-PYMTTERM sy-vline 
WA_RETM_POSTING_PY_STR-HOUSEBKID sy-vline 
WA_RETM_POSTING_PY_STR-HOUSEBKACC sy-vline 
WA_RETM_POSTING_PY_STR-BANKDETAILID sy-vline 
WA_RETM_POSTING_PY_STR-NOTETOPAYEE sy-vline 
WA_RETM_POSTING_PY_STR-DUNNAREA sy-vline 
WA_RETM_POSTING_PY_STR-DUNNKEY sy-vline 
WA_RETM_POSTING_PY_STR-DUNNBLOCK sy-vline 
WA_RETM_POSTING_PY_STR-ACCDETKEY sy-vline 
WA_RETM_POSTING_PY_STR-TAXTYPE sy-vline 
WA_RETM_POSTING_PY_STR-TAXGROUP sy-vline 
WA_RETM_POSTING_PY_STR-ISGROSS sy-vline 
WA_RETM_POSTING_PY_STR-TAXCOUNTRY sy-vline 
WA_RETM_POSTING_PY_STR-PARTNER sy-vline 
WA_RETM_POSTING_PY_STR-PARTNEROBJNR sy-vline 
WA_RETM_POSTING_PY_STR-TXJCD sy-vline 
WA_RETM_POSTING_PY_STR-ISCDSPLIT sy-vline 
WA_RETM_POSTING_PY_STR-CTRULE sy-vline 
WA_RETM_POSTING_PY_STR-ISPARTNERBLOCKED sy-vline 
WA_RETM_POSTING_PY_STR-SEPAMNDID sy-vline 
WA_RETM_POSTING_PY_STR-SEPARECCRDID sy-vline      INTO ld_text SEPARATED BY SPACE.

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