ABAP Select data from SAP table TXI_TTXD into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP TXI_TTXD 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_TTXD. 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_TTXD 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_TTXD TYPE STANDARD TABLE OF TXI_TTXD,
      WA_TXI_TTXD TYPE TXI_TTXD,
      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_TTXD> TYPE TXI_TTXD.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM TXI_TTXD
*  INTO TABLE @DATA(IT_TXI_TTXD2).
*--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_TTXD INDEX 1 INTO DATA(WA_TXI_TTXD2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<TXI_TTXD>-MANDT = 1.
<TXI_TTXD>-KALSM = 1.
<TXI_TTXD>-LENG1 = 1.
<TXI_TTXD>-LENG2 = 1.
<TXI_TTXD>-LENG3 = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_TXI_TTXD-LENG4, sy-vline,
  WA_TXI_TTXD-XEXTN, sy-vline,
  WA_TXI_TTXD-XTXIT, sy-vline,
  WA_TXI_TTXD-INTVERSION, sy-vline,
  WA_TXI_TTXD-RFCDEST, sy-vline,
  WA_TXI_TTXD-XCORRECT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_TXI_TTXD 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_TTXD 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_TTXD INTO WA_TXI_TTXD.


*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_TTXD_STR, 
MANDT TYPE STRING,
KALSM TYPE STRING,
LENG1 TYPE STRING,
LENG2 TYPE STRING,
LENG3 TYPE STRING,
LENG4 TYPE STRING,
XEXTN TYPE STRING,
XTXIT TYPE STRING,
INTVERSION TYPE STRING,
RFCDEST TYPE STRING,
XCORRECT TYPE STRING,
RFCDEST_UD TYPE STRING,END OF T_EKKO_STR.
DATA: WA_TXI_TTXD_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_TTXD_STR-MANDT sy-vline 
WA_TXI_TTXD_STR-KALSM sy-vline 
WA_TXI_TTXD_STR-LENG1 sy-vline 
WA_TXI_TTXD_STR-LENG2 sy-vline 
WA_TXI_TTXD_STR-LENG3 sy-vline 
WA_TXI_TTXD_STR-LENG4 sy-vline 
WA_TXI_TTXD_STR-XEXTN sy-vline 
WA_TXI_TTXD_STR-XTXIT sy-vline 
WA_TXI_TTXD_STR-INTVERSION sy-vline 
WA_TXI_TTXD_STR-RFCDEST sy-vline 
WA_TXI_TTXD_STR-XCORRECT sy-vline 
WA_TXI_TTXD_STR-RFCDEST_UD sy-vline      INTO ld_text SEPARATED BY SPACE.

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