ABAP Select data from SAP table IFU_VH4 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP IFU_VH4 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 IFU_VH4. 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 IFU_VH4 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_IFU_VH4 TYPE STANDARD TABLE OF IFU_VH4,
      WA_IFU_VH4 TYPE IFU_VH4,
      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: <IFU_VH4> TYPE IFU_VH4.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_IFU_VH4.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM IFU_VH4
  INTO TABLE IT_IFU_VH4.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM IFU_VH4
*  INTO TABLE @DATA(IT_IFU_VH42).
*--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_IFU_VH4 INDEX 1 INTO DATA(WA_IFU_VH42).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_IFU_VH4 ASSIGNING <IFU_VH4>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<IFU_VH4>-MANDT = 1.
<IFU_VH4>-FUND = 1.
<IFU_VH4>-FINANCIALMANAGEMENTAREA = 1.
<IFU_VH4>-FUNDNAME = 1.
<IFU_VH4>-FUNDDESCRIPTION = 1.

ENDLOOP.

LOOP AT IT_IFU_VH4 INTO WA_IFU_VH4.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_IFU_VH4-FUNDAUTHZNGRP, sy-vline,
  WA_IFU_VH4-FUNDFINMGMTAREAFORAUTHZN, sy-vline,
  WA_IFU_VH4-VALIDITYSTARTDATE, sy-vline,
  WA_IFU_VH4-VALIDITYENDDATE, sy-vline,
  WA_IFU_VH4-FUNDPERIODICITY, sy-vline,
  WA_IFU_VH4-GRANTEEMGMTFUNDTYPENAME, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_IFU_VH4 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_IFU_VH4 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_IFU_VH4 INTO WA_IFU_VH4.


*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.
ENDFORM. 

*&---------------------------------------------------------------------*
*& Form process_as_string_field_values
*&---------------------------------------------------------------------*
FORM process_as_string_field_values CHANGING p_EKKO LIKE wa_EKKO.

TYPES: BEGIN OF T_IFU_VH4_STR, 
MANDT TYPE STRING,
FUND TYPE STRING,
FINANCIALMANAGEMENTAREA TYPE STRING,
FUNDNAME TYPE STRING,
FUNDDESCRIPTION TYPE STRING,
FUNDAUTHZNGRP TYPE STRING,
FUNDFINMGMTAREAFORAUTHZN TYPE STRING,
VALIDITYSTARTDATE TYPE STRING,
VALIDITYENDDATE TYPE STRING,
FUNDPERIODICITY TYPE STRING,
GRANTEEMGMTFUNDTYPENAME TYPE STRING,
GRNTEMGMTFUNDTYPENAMESEARCHTXT TYPE STRING,
FUNDPERIODICITYTEXT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_IFU_VH4_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_IFU_VH4_STR-MANDT sy-vline 
WA_IFU_VH4_STR-FUND sy-vline 
WA_IFU_VH4_STR-FINANCIALMANAGEMENTAREA sy-vline 
WA_IFU_VH4_STR-FUNDNAME sy-vline 
WA_IFU_VH4_STR-FUNDDESCRIPTION sy-vline 
WA_IFU_VH4_STR-FUNDAUTHZNGRP sy-vline 
WA_IFU_VH4_STR-FUNDFINMGMTAREAFORAUTHZN sy-vline 
WA_IFU_VH4_STR-VALIDITYSTARTDATE sy-vline 
WA_IFU_VH4_STR-VALIDITYENDDATE sy-vline 
WA_IFU_VH4_STR-FUNDPERIODICITY sy-vline 
WA_IFU_VH4_STR-GRANTEEMGMTFUNDTYPENAME sy-vline 
WA_IFU_VH4_STR-GRNTEMGMTFUNDTYPENAMESEARCHTXT sy-vline 
WA_IFU_VH4_STR-FUNDPERIODICITYTEXT sy-vline      INTO ld_text SEPARATED BY SPACE.

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