ABAP Select data from SAP table V_TIVMITAB into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP V_TIVMITAB 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_TIVMITAB. 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_TIVMITAB 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_TIVMITAB TYPE STANDARD TABLE OF V_TIVMITAB,
      WA_V_TIVMITAB TYPE V_TIVMITAB,
      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_TIVMITAB> TYPE V_TIVMITAB.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM V_TIVMITAB
*  INTO TABLE @DATA(IT_V_TIVMITAB2).
*--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_TIVMITAB INDEX 1 INTO DATA(WA_V_TIVMITAB2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<V_TIVMITAB>-TABNAMEOLD = 1.
<V_TIVMITAB>-TABNAMENEW = 1.
<V_TIVMITAB>-MIGSTEP = 1.
<V_TIVMITAB>-MIGGROUP = 1.
<V_TIVMITAB>-ISLEADING = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_V_TIVMITAB-MIGORDER, sy-vline,
  WA_V_TIVMITAB-MIGCHECKIND, sy-vline,
  WA_V_TIVMITAB-IMPLCLNAME, sy-vline,
  WA_V_TIVMITAB-DOCNAME, sy-vline,
  WA_V_TIVMITAB-ISOPTIONAL, sy-vline,
  WA_V_TIVMITAB-CANBEDELETED, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_V_TIVMITAB 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_TIVMITAB 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_TIVMITAB INTO WA_V_TIVMITAB.


*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_TIVMITAB_STR, 
TABNAMEOLD TYPE STRING,
TABNAMENEW TYPE STRING,
MIGSTEP TYPE STRING,
MIGGROUP TYPE STRING,
ISLEADING TYPE STRING,
MIGORDER TYPE STRING,
MIGCHECKIND TYPE STRING,
IMPLCLNAME TYPE STRING,
DOCNAME TYPE STRING,
ISOPTIONAL TYPE STRING,
CANBEDELETED TYPE STRING,END OF T_EKKO_STR.
DATA: WA_V_TIVMITAB_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_TIVMITAB_STR-TABNAMEOLD sy-vline 
WA_V_TIVMITAB_STR-TABNAMENEW sy-vline 
WA_V_TIVMITAB_STR-MIGSTEP sy-vline 
WA_V_TIVMITAB_STR-MIGGROUP sy-vline 
WA_V_TIVMITAB_STR-ISLEADING sy-vline 
WA_V_TIVMITAB_STR-MIGORDER sy-vline 
WA_V_TIVMITAB_STR-MIGCHECKIND sy-vline 
WA_V_TIVMITAB_STR-IMPLCLNAME sy-vline 
WA_V_TIVMITAB_STR-DOCNAME sy-vline 
WA_V_TIVMITAB_STR-ISOPTIONAL sy-vline 
WA_V_TIVMITAB_STR-CANBEDELETED sy-vline      INTO ld_text SEPARATED BY SPACE.

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