ABAP Select data from SAP table FINOCV_RTPOIMNTH into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM FINOCV_RTPOIMNTH
*  INTO TABLE @DATA(IT_FINOCV_RTPOIMNTH2).
*--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_FINOCV_RTPOIMNTH INDEX 1 INTO DATA(WA_FINOCV_RTPOIMNTH2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<FINOCV_RTPOIMNTH>-MANDT = 1.
<FINOCV_RTPOIMNTH>-PURCHASINGDOCUMENT = 1.
<FINOCV_RTPOIMNTH>-PURCHASINGDOCUMENTITEM = 1.
<FINOCV_RTPOIMNTH>-PURCHASINGDOCUMENTCATEGORY = 1.
<FINOCV_RTPOIMNTH>-PURCHASINGDOCUMENTDELETIONCODE = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_FINOCV_RTPOIMNTH-PURCHASINGDOCUMENTITEMCATEGORY, sy-vline,
  WA_FINOCV_RTPOIMNTH-ISCOMPLETELYDELIVERED, sy-vline,
  WA_FINOCV_RTPOIMNTH-ISFINALLYINVOICED, sy-vline,
  WA_FINOCV_RTPOIMNTH-ACCOUNTASSIGNMENTCATEGORY, sy-vline,
  WA_FINOCV_RTPOIMNTH-INVENTORYSPECIALSTOCKTYPE, sy-vline,
  WA_FINOCV_RTPOIMNTH-MATERIAL, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_FINOCV_RTPOIMNTH 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_FINOCV_RTPOIMNTH 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_FINOCV_RTPOIMNTH INTO WA_FINOCV_RTPOIMNTH.


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

*Conversion exit MATN1, internal->external for field MATERIAL
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_FINOCV_RTPOIMNTH-MATERIAL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FINOCV_RTPOIMNTH-MATERIAL.
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_FINOCV_RTPOIMNTH_STR, 
MANDT TYPE STRING,
PURCHASINGDOCUMENT TYPE STRING,
PURCHASINGDOCUMENTITEM TYPE STRING,
PURCHASINGDOCUMENTCATEGORY TYPE STRING,
PURCHASINGDOCUMENTDELETIONCODE TYPE STRING,
PURCHASINGDOCUMENTITEMCATEGORY TYPE STRING,
ISCOMPLETELYDELIVERED TYPE STRING,
ISFINALLYINVOICED TYPE STRING,
ACCOUNTASSIGNMENTCATEGORY TYPE STRING,
INVENTORYSPECIALSTOCKTYPE TYPE STRING,
MATERIAL TYPE STRING,
PLANT TYPE STRING,
ITEMCHANGEDATE TYPE STRING,
ITEMCHANGEDATEPLUSMONTHS TYPE STRING,END OF T_EKKO_STR.
DATA: WA_FINOCV_RTPOIMNTH_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_FINOCV_RTPOIMNTH_STR-MANDT sy-vline 
WA_FINOCV_RTPOIMNTH_STR-PURCHASINGDOCUMENT sy-vline 
WA_FINOCV_RTPOIMNTH_STR-PURCHASINGDOCUMENTITEM sy-vline 
WA_FINOCV_RTPOIMNTH_STR-PURCHASINGDOCUMENTCATEGORY sy-vline 
WA_FINOCV_RTPOIMNTH_STR-PURCHASINGDOCUMENTDELETIONCODE sy-vline 
WA_FINOCV_RTPOIMNTH_STR-PURCHASINGDOCUMENTITEMCATEGORY sy-vline 
WA_FINOCV_RTPOIMNTH_STR-ISCOMPLETELYDELIVERED sy-vline 
WA_FINOCV_RTPOIMNTH_STR-ISFINALLYINVOICED sy-vline 
WA_FINOCV_RTPOIMNTH_STR-ACCOUNTASSIGNMENTCATEGORY sy-vline 
WA_FINOCV_RTPOIMNTH_STR-INVENTORYSPECIALSTOCKTYPE sy-vline 
WA_FINOCV_RTPOIMNTH_STR-MATERIAL sy-vline 
WA_FINOCV_RTPOIMNTH_STR-PLANT sy-vline 
WA_FINOCV_RTPOIMNTH_STR-ITEMCHANGEDATE sy-vline 
WA_FINOCV_RTPOIMNTH_STR-ITEMCHANGEDATEPLUSMONTHS sy-vline      INTO ld_text SEPARATED BY SPACE.

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