ABAP Select data from SAP table V_T56E4 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP V_T56E4 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_T56E4. 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_T56E4 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_T56E4 TYPE STANDARD TABLE OF V_T56E4,
      WA_V_T56E4 TYPE V_T56E4,
      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_T56E4> TYPE V_T56E4.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_V_T56E4.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM V_T56E4
  INTO TABLE IT_V_T56E4.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM V_T56E4
*  INTO TABLE @DATA(IT_V_T56E42).
*--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_T56E4 INDEX 1 INTO DATA(WA_V_T56E42).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_V_T56E4 ASSIGNING <V_T56E4>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<V_T56E4>-ANDT = 1.
<V_T56E4>-MOLGA = 1.
<V_T56E4>-TGRUP = 1.
<V_T56E4>-TRULE = 1.
<V_T56E4>-TSUBR = 1.

ENDLOOP.

LOOP AT IT_V_T56E4 INTO WA_V_T56E4.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_V_T56E4-ENDDA, sy-vline,
  WA_V_T56E4-BEGDA, sy-vline,
  WA_V_T56E4-TRLTY, sy-vline,
  WA_V_T56E4-LGART, sy-vline,
  WA_V_T56E4-STABL, sy-vline,
  WA_V_T56E4-SFELD, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_V_T56E4 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_T56E4 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_T56E4 INTO WA_V_T56E4.


*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_V_T56E4_STR, 
ANDT TYPE STRING,
MOLGA TYPE STRING,
TGRUP TYPE STRING,
TRULE TYPE STRING,
TSUBR TYPE STRING,
ENDDA TYPE STRING,
BEGDA TYPE STRING,
TRLTY TYPE STRING,
LGART TYPE STRING,
STABL TYPE STRING,
SFELD TYPE STRING,
COMPR TYPE STRING,
FXVAL TYPE STRING,
WAERS TYPE STRING,
FXCOD TYPE STRING,
SPLIT TYPE STRING,
LGRT2 TYPE STRING,
STAB2 TYPE STRING,
SFLD2 TYPE STRING,
PRCNT TYPE STRING,
LOGIC TYPE STRING,
GRDSC TYPE STRING,
RLDSC TYPE STRING,END OF T_EKKO_STR.
DATA: WA_V_T56E4_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_T56E4_STR-ANDT sy-vline 
WA_V_T56E4_STR-MOLGA sy-vline 
WA_V_T56E4_STR-TGRUP sy-vline 
WA_V_T56E4_STR-TRULE sy-vline 
WA_V_T56E4_STR-TSUBR sy-vline 
WA_V_T56E4_STR-ENDDA sy-vline 
WA_V_T56E4_STR-BEGDA sy-vline 
WA_V_T56E4_STR-TRLTY sy-vline 
WA_V_T56E4_STR-LGART sy-vline 
WA_V_T56E4_STR-STABL sy-vline 
WA_V_T56E4_STR-SFELD sy-vline 
WA_V_T56E4_STR-COMPR sy-vline 
WA_V_T56E4_STR-FXVAL sy-vline 
WA_V_T56E4_STR-WAERS sy-vline 
WA_V_T56E4_STR-FXCOD sy-vline 
WA_V_T56E4_STR-SPLIT sy-vline 
WA_V_T56E4_STR-LGRT2 sy-vline 
WA_V_T56E4_STR-STAB2 sy-vline 
WA_V_T56E4_STR-SFLD2 sy-vline 
WA_V_T56E4_STR-PRCNT sy-vline 
WA_V_T56E4_STR-LOGIC sy-vline 
WA_V_T56E4_STR-GRDSC sy-vline 
WA_V_T56E4_STR-RLDSC sy-vline      INTO ld_text SEPARATED BY SPACE.

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