ABAP Select data from SAP table TXI_TVTA into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM TXI_TVTA
*  INTO TABLE @DATA(IT_TXI_TVTA2).
*--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_TXI_TVTA INDEX 1 INTO DATA(WA_TXI_TVTA2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<TXI_TVTA>-MANDT = 1.
<TXI_TVTA>-VKORG = 1.
<TXI_TVTA>-VTWEG = 1.
<TXI_TVTA>-SPART = 1.
<TXI_TVTA>-VTWKU = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_TXI_TVTA-SPAKU, sy-vline,
  WA_TXI_TVTA-VTWKO, sy-vline,
  WA_TXI_TVTA-SPAKO, sy-vline,
  WA_TXI_TVTA-MABER, sy-vline,
  WA_TXI_TVTA-VKOAU, sy-vline,
  WA_TXI_TVTA-VTWAU, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_TXI_TVTA 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_TXI_TVTA 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_TXI_TVTA INTO WA_TXI_TVTA.


*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_TXI_TVTA_STR, 
MANDT TYPE STRING,
VKORG TYPE STRING,
VTWEG TYPE STRING,
SPART TYPE STRING,
VTWKU TYPE STRING,
SPAKU TYPE STRING,
VTWKO TYPE STRING,
SPAKO TYPE STRING,
MABER TYPE STRING,
VKOAU TYPE STRING,
VTWAU TYPE STRING,
SPAAU TYPE STRING,
GSBER TYPE STRING,
REGGB TYPE STRING,
REVFP TYPE STRING,
FIXMG TYPE STRING,
AFIND TYPE STRING,
KKBER TYPE STRING,
J_1ASNR TYPE STRING,
J_1AESNR TYPE STRING,
HIDE TYPE STRING,
J_3GKBAUL TYPE STRING,
OID_CHECKC TYPE STRING,END OF T_EKKO_STR.
DATA: WA_TXI_TVTA_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_TXI_TVTA_STR-MANDT sy-vline 
WA_TXI_TVTA_STR-VKORG sy-vline 
WA_TXI_TVTA_STR-VTWEG sy-vline 
WA_TXI_TVTA_STR-SPART sy-vline 
WA_TXI_TVTA_STR-VTWKU sy-vline 
WA_TXI_TVTA_STR-SPAKU sy-vline 
WA_TXI_TVTA_STR-VTWKO sy-vline 
WA_TXI_TVTA_STR-SPAKO sy-vline 
WA_TXI_TVTA_STR-MABER sy-vline 
WA_TXI_TVTA_STR-VKOAU sy-vline 
WA_TXI_TVTA_STR-VTWAU sy-vline 
WA_TXI_TVTA_STR-SPAAU sy-vline 
WA_TXI_TVTA_STR-GSBER sy-vline 
WA_TXI_TVTA_STR-REGGB sy-vline 
WA_TXI_TVTA_STR-REVFP sy-vline 
WA_TXI_TVTA_STR-FIXMG sy-vline 
WA_TXI_TVTA_STR-AFIND sy-vline 
WA_TXI_TVTA_STR-KKBER sy-vline 
WA_TXI_TVTA_STR-J_1ASNR sy-vline 
WA_TXI_TVTA_STR-J_1AESNR sy-vline 
WA_TXI_TVTA_STR-HIDE sy-vline 
WA_TXI_TVTA_STR-J_3GKBAUL sy-vline 
WA_TXI_TVTA_STR-OID_CHECKC sy-vline      INTO ld_text SEPARATED BY SPACE.

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