ABAP Select data from SAP table FAGL_MIG_RPITEMS into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM FAGL_MIG_RPITEMS
*  INTO TABLE @DATA(IT_FAGL_MIG_RPITEMS2).
*--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_FAGL_MIG_RPITEMS INDEX 1 INTO DATA(WA_FAGL_MIG_RPITEMS2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<FAGL_MIG_RPITEMS>-MANDT = 1.
<FAGL_MIG_RPITEMS>-MGPLN = 1.
<FAGL_MIG_RPITEMS>-BUKRS = 1.
<FAGL_MIG_RPITEMS>-BELNR = 1.
<FAGL_MIG_RPITEMS>-GJAHR = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_FAGL_MIG_RPITEMS-MONAT, sy-vline,
  WA_FAGL_MIG_RPITEMS-BSTAT, sy-vline,
  WA_FAGL_MIG_RPITEMS-RLDNR, sy-vline,
  WA_FAGL_MIG_RPITEMS-LDGRP, sy-vline,
  WA_FAGL_MIG_RPITEMS-AWTYP, sy-vline,
  WA_FAGL_MIG_RPITEMS-AWKEY, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_FAGL_MIG_RPITEMS 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_FAGL_MIG_RPITEMS 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_FAGL_MIG_RPITEMS INTO WA_FAGL_MIG_RPITEMS.


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

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

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

*Conversion exit ALPHA, internal->external for field AWSYS
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_FAGL_MIG_RPITEMS-AWSYS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FAGL_MIG_RPITEMS-AWSYS.
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_FAGL_MIG_RPITEMS_STR, 
MANDT TYPE STRING,
MGPLN TYPE STRING,
BUKRS TYPE STRING,
BELNR TYPE STRING,
GJAHR TYPE STRING,
MONAT TYPE STRING,
BSTAT TYPE STRING,
RLDNR TYPE STRING,
LDGRP TYPE STRING,
AWTYP TYPE STRING,
AWKEY TYPE STRING,
AWSYS TYPE STRING,
CPUDT TYPE STRING,
CPUTM TYPE STRING,
STATUS TYPE STRING,
MODI_FLG TYPE STRING,
MSGID TYPE STRING,
MSGNO TYPE STRING,
MSGTY TYPE STRING,
MSGV1 TYPE STRING,
MSGV2 TYPE STRING,
MSGV3 TYPE STRING,
MSGV4 TYPE STRING,
TIMESTAMP TYPE STRING,END OF T_EKKO_STR.
DATA: WA_FAGL_MIG_RPITEMS_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_FAGL_MIG_RPITEMS_STR-MANDT sy-vline 
WA_FAGL_MIG_RPITEMS_STR-MGPLN sy-vline 
WA_FAGL_MIG_RPITEMS_STR-BUKRS sy-vline 
WA_FAGL_MIG_RPITEMS_STR-BELNR sy-vline 
WA_FAGL_MIG_RPITEMS_STR-GJAHR sy-vline 
WA_FAGL_MIG_RPITEMS_STR-MONAT sy-vline 
WA_FAGL_MIG_RPITEMS_STR-BSTAT sy-vline 
WA_FAGL_MIG_RPITEMS_STR-RLDNR sy-vline 
WA_FAGL_MIG_RPITEMS_STR-LDGRP sy-vline 
WA_FAGL_MIG_RPITEMS_STR-AWTYP sy-vline 
WA_FAGL_MIG_RPITEMS_STR-AWKEY sy-vline 
WA_FAGL_MIG_RPITEMS_STR-AWSYS sy-vline 
WA_FAGL_MIG_RPITEMS_STR-CPUDT sy-vline 
WA_FAGL_MIG_RPITEMS_STR-CPUTM sy-vline 
WA_FAGL_MIG_RPITEMS_STR-STATUS sy-vline 
WA_FAGL_MIG_RPITEMS_STR-MODI_FLG sy-vline 
WA_FAGL_MIG_RPITEMS_STR-MSGID sy-vline 
WA_FAGL_MIG_RPITEMS_STR-MSGNO sy-vline 
WA_FAGL_MIG_RPITEMS_STR-MSGTY sy-vline 
WA_FAGL_MIG_RPITEMS_STR-MSGV1 sy-vline 
WA_FAGL_MIG_RPITEMS_STR-MSGV2 sy-vline 
WA_FAGL_MIG_RPITEMS_STR-MSGV3 sy-vline 
WA_FAGL_MIG_RPITEMS_STR-MSGV4 sy-vline 
WA_FAGL_MIG_RPITEMS_STR-TIMESTAMP sy-vline      INTO ld_text SEPARATED BY SPACE.

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