ABAP Select data from SAP table FVD_IF_IA_LOAN_CHANGE into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM FVD_IF_IA_LOAN_CHANGE
*  INTO TABLE @DATA(IT_FVD_IF_IA_LOAN_CHANGE2).
*--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_FVD_IF_IA_LOAN_CHANGE INDEX 1 INTO DATA(WA_FVD_IF_IA_LOAN_CHANGE2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<FVD_IF_IA_LOAN_CHANGE>-BUKRS = 1.
<FVD_IF_IA_LOAN_CHANGE>-RANL = 1.
<FVD_IF_IA_LOAN_CHANGE>-SSTATI = 1.
<FVD_IF_IA_LOAN_CHANGE>-STITEL = 1.
<FVD_IF_IA_LOAN_CHANGE>-XALLB = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_FVD_IF_IA_LOAN_CHANGE-RANLALT1, sy-vline,
  WA_FVD_IF_IA_LOAN_CHANGE-SSOLIST, sy-vline,
  WA_FVD_IF_IA_LOAN_CHANGE-SFRIST, sy-vline,
  WA_FVD_IF_IA_LOAN_CHANGE-DZUSAGE, sy-vline,
  WA_FVD_IF_IA_LOAN_CHANGE-SVZWECK, sy-vline,
  WA_FVD_IF_IA_LOAN_CHANGE-SSONDER, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_FVD_IF_IA_LOAN_CHANGE 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_FVD_IF_IA_LOAN_CHANGE 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_FVD_IF_IA_LOAN_CHANGE INTO WA_FVD_IF_IA_LOAN_CHANGE.


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

*Conversion exit ALPHA, internal->external for field RKLAMMER
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_FVD_IF_IA_LOAN_CHANGE-RKLAMMER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FVD_IF_IA_LOAN_CHANGE-RKLAMMER.
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_FVD_IF_IA_LOAN_CHANGE_STR, 
BUKRS TYPE STRING,
RANL TYPE STRING,
SSTATI TYPE STRING,
STITEL TYPE STRING,
XALLB TYPE STRING,
RANLALT1 TYPE STRING,
SSOLIST TYPE STRING,
SFRIST TYPE STRING,
DZUSAGE TYPE STRING,
SVZWECK TYPE STRING,
SSONDER TYPE STRING,
SHOME TYPE STRING,
SLAENDER TYPE STRING,
SDTYP TYPE STRING,
SONDST TYPE STRING,
BEGRU TYPE STRING,
SKWG14_NEU TYPE STRING,
SGLZB TYPE STRING,
SFIBG TYPE STRING,
SBILK TYPE STRING,
XALKZ TYPE STRING,
RANLALT2 TYPE STRING,
SGR1 TYPE STRING,
SGR2 TYPE STRING,
SGRP3 TYPE STRING,
SGRP4 TYPE STRING,
ZUOND TYPE STRING,
REFER TYPE STRING,
MERKM TYPE STRING,
NO_PLAN_DONE TYPE STRING,
XAKT TYPE STRING,
RKLAMMER TYPE STRING,END OF T_EKKO_STR.
DATA: WA_FVD_IF_IA_LOAN_CHANGE_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_FVD_IF_IA_LOAN_CHANGE_STR-BUKRS sy-vline 
WA_FVD_IF_IA_LOAN_CHANGE_STR-RANL sy-vline 
WA_FVD_IF_IA_LOAN_CHANGE_STR-SSTATI sy-vline 
WA_FVD_IF_IA_LOAN_CHANGE_STR-STITEL sy-vline 
WA_FVD_IF_IA_LOAN_CHANGE_STR-XALLB sy-vline 
WA_FVD_IF_IA_LOAN_CHANGE_STR-RANLALT1 sy-vline 
WA_FVD_IF_IA_LOAN_CHANGE_STR-SSOLIST sy-vline 
WA_FVD_IF_IA_LOAN_CHANGE_STR-SFRIST sy-vline 
WA_FVD_IF_IA_LOAN_CHANGE_STR-DZUSAGE sy-vline 
WA_FVD_IF_IA_LOAN_CHANGE_STR-SVZWECK sy-vline 
WA_FVD_IF_IA_LOAN_CHANGE_STR-SSONDER sy-vline 
WA_FVD_IF_IA_LOAN_CHANGE_STR-SHOME sy-vline 
WA_FVD_IF_IA_LOAN_CHANGE_STR-SLAENDER sy-vline 
WA_FVD_IF_IA_LOAN_CHANGE_STR-SDTYP sy-vline 
WA_FVD_IF_IA_LOAN_CHANGE_STR-SONDST sy-vline 
WA_FVD_IF_IA_LOAN_CHANGE_STR-BEGRU sy-vline 
WA_FVD_IF_IA_LOAN_CHANGE_STR-SKWG14_NEU sy-vline 
WA_FVD_IF_IA_LOAN_CHANGE_STR-SGLZB sy-vline 
WA_FVD_IF_IA_LOAN_CHANGE_STR-SFIBG sy-vline 
WA_FVD_IF_IA_LOAN_CHANGE_STR-SBILK sy-vline 
WA_FVD_IF_IA_LOAN_CHANGE_STR-XALKZ sy-vline 
WA_FVD_IF_IA_LOAN_CHANGE_STR-RANLALT2 sy-vline 
WA_FVD_IF_IA_LOAN_CHANGE_STR-SGR1 sy-vline 
WA_FVD_IF_IA_LOAN_CHANGE_STR-SGR2 sy-vline 
WA_FVD_IF_IA_LOAN_CHANGE_STR-SGRP3 sy-vline 
WA_FVD_IF_IA_LOAN_CHANGE_STR-SGRP4 sy-vline 
WA_FVD_IF_IA_LOAN_CHANGE_STR-ZUOND sy-vline 
WA_FVD_IF_IA_LOAN_CHANGE_STR-REFER sy-vline 
WA_FVD_IF_IA_LOAN_CHANGE_STR-MERKM sy-vline 
WA_FVD_IF_IA_LOAN_CHANGE_STR-NO_PLAN_DONE sy-vline 
WA_FVD_IF_IA_LOAN_CHANGE_STR-XAKT sy-vline 
WA_FVD_IF_IA_LOAN_CHANGE_STR-RKLAMMER sy-vline      INTO ld_text SEPARATED BY SPACE.

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