ABAP Select data from SAP table V_FMMACGPERC into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM V_FMMACGPERC
*  INTO TABLE @DATA(IT_V_FMMACGPERC2).
*--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_V_FMMACGPERC INDEX 1 INTO DATA(WA_V_FMMACGPERC2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<V_FMMACGPERC>-CLIENT = 1.
<V_FMMACGPERC>-FM_AREA = 1.
<V_FMMACGPERC>-FISCYEAR = 1.
<V_FMMACGPERC>-ALDNR = 1.
<V_FMMACGPERC>-FROM_CVRGRP = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_V_FMMACGPERC-TO_CVRGRP, sy-vline,
  WA_V_FMMACGPERC-PERC01, sy-vline,
  WA_V_FMMACGPERC-PERC02, sy-vline,
  WA_V_FMMACGPERC-PERC03, sy-vline,
  WA_V_FMMACGPERC-PERC04, sy-vline,
  WA_V_FMMACGPERC-PERC05, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_V_FMMACGPERC 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_V_FMMACGPERC 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_V_FMMACGPERC INTO WA_V_FMMACGPERC.


*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 GJAHR, internal->external for field FISCYEAR
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_V_FMMACGPERC-FISCYEAR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_V_FMMACGPERC-FISCYEAR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field ALDNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_V_FMMACGPERC-ALDNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_V_FMMACGPERC-ALDNR.
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_V_FMMACGPERC_STR, 
CLIENT TYPE STRING,
FM_AREA TYPE STRING,
FISCYEAR TYPE STRING,
ALDNR TYPE STRING,
FROM_CVRGRP TYPE STRING,
TO_CVRGRP TYPE STRING,
PERC01 TYPE STRING,
PERC02 TYPE STRING,
PERC03 TYPE STRING,
PERC04 TYPE STRING,
PERC05 TYPE STRING,
PERC06 TYPE STRING,
PERC07 TYPE STRING,
PERC08 TYPE STRING,
PERC09 TYPE STRING,
PERC10 TYPE STRING,
PERC11 TYPE STRING,
PERC12 TYPE STRING,
PERC13 TYPE STRING,
PERC14 TYPE STRING,
PERC15 TYPE STRING,
PERC16 TYPE STRING,
PERC17 TYPE STRING,
PERC18 TYPE STRING,
PERC19 TYPE STRING,
PERC20 TYPE STRING,END OF T_EKKO_STR.
DATA: WA_V_FMMACGPERC_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_V_FMMACGPERC_STR-CLIENT sy-vline 
WA_V_FMMACGPERC_STR-FM_AREA sy-vline 
WA_V_FMMACGPERC_STR-FISCYEAR sy-vline 
WA_V_FMMACGPERC_STR-ALDNR sy-vline 
WA_V_FMMACGPERC_STR-FROM_CVRGRP sy-vline 
WA_V_FMMACGPERC_STR-TO_CVRGRP sy-vline 
WA_V_FMMACGPERC_STR-PERC01 sy-vline 
WA_V_FMMACGPERC_STR-PERC02 sy-vline 
WA_V_FMMACGPERC_STR-PERC03 sy-vline 
WA_V_FMMACGPERC_STR-PERC04 sy-vline 
WA_V_FMMACGPERC_STR-PERC05 sy-vline 
WA_V_FMMACGPERC_STR-PERC06 sy-vline 
WA_V_FMMACGPERC_STR-PERC07 sy-vline 
WA_V_FMMACGPERC_STR-PERC08 sy-vline 
WA_V_FMMACGPERC_STR-PERC09 sy-vline 
WA_V_FMMACGPERC_STR-PERC10 sy-vline 
WA_V_FMMACGPERC_STR-PERC11 sy-vline 
WA_V_FMMACGPERC_STR-PERC12 sy-vline 
WA_V_FMMACGPERC_STR-PERC13 sy-vline 
WA_V_FMMACGPERC_STR-PERC14 sy-vline 
WA_V_FMMACGPERC_STR-PERC15 sy-vline 
WA_V_FMMACGPERC_STR-PERC16 sy-vline 
WA_V_FMMACGPERC_STR-PERC17 sy-vline 
WA_V_FMMACGPERC_STR-PERC18 sy-vline 
WA_V_FMMACGPERC_STR-PERC19 sy-vline 
WA_V_FMMACGPERC_STR-PERC20 sy-vline      INTO ld_text SEPARATED BY SPACE.

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