ABAP Select data from SAP table TXI_TRACT_DOCUMENT into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP TXI_TRACT_DOCUMENT 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_TRACT_DOCUMENT. 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_TRACT_DOCUMENT 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_TRACT_DOCUMENT TYPE STANDARD TABLE OF TXI_TRACT_DOCUMENT,
      WA_TXI_TRACT_DOCUMENT TYPE TXI_TRACT_DOCUMENT,
      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_TRACT_DOCUMENT> TYPE TXI_TRACT_DOCUMENT.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM TXI_TRACT_DOCUMENT
*  INTO TABLE @DATA(IT_TXI_TRACT_DOCUMENT2).
*--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_TRACT_DOCUMENT INDEX 1 INTO DATA(WA_TXI_TRACT_DOCUMENT2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<TXI_TRACT_DOCUMENT>-MANDT = 1.
<TXI_TRACT_DOCUMENT>-OS_GUID = 1.
<TXI_TRACT_DOCUMENT>-BUSTRANSID = 1.
<TXI_TRACT_DOCUMENT>-DOCUMENTID = 1.
<TXI_TRACT_DOCUMENT>-TR_ACC_CODE = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_TXI_TRACT_DOCUMENT-VALUATION_AREA, sy-vline,
  WA_TXI_TRACT_DOCUMENT-AWREF, sy-vline,
  WA_TXI_TRACT_DOCUMENT-AWORG, sy-vline,
  WA_TXI_TRACT_DOCUMENT-ACPOSTINGDATE, sy-vline,
  WA_TXI_TRACT_DOCUMENT-ACPOSTINGPERIOD, sy-vline,
  WA_TXI_TRACT_DOCUMENT-ACPOSTINGYEAR, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_TXI_TRACT_DOCUMENT 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_TRACT_DOCUMENT 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_TRACT_DOCUMENT INTO WA_TXI_TRACT_DOCUMENT.


*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.

*Conversion exit ALPHA, internal->external for field AWREF
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_TXI_TRACT_DOCUMENT-AWREF
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_TXI_TRACT_DOCUMENT-AWREF.
WRITE:/ 'New Value:', ld_input.

*Conversion exit GJAHR, internal->external for field ACPOSTINGYEAR
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_TXI_TRACT_DOCUMENT-ACPOSTINGYEAR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_TXI_TRACT_DOCUMENT-ACPOSTINGYEAR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field REVERSAL_AWREF
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_TXI_TRACT_DOCUMENT-REVERSAL_AWREF
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_TXI_TRACT_DOCUMENT-REVERSAL_AWREF.
WRITE:/ 'New Value:', ld_input.

*Conversion exit GJAHR, internal->external for field ACREVERSALYEAR
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_TXI_TRACT_DOCUMENT-ACREVERSALYEAR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_TXI_TRACT_DOCUMENT-ACREVERSALYEAR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field SPECIALLEDGER
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_TXI_TRACT_DOCUMENT-SPECIALLEDGER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_TXI_TRACT_DOCUMENT-SPECIALLEDGER.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field DEAL_NUMBER
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_TXI_TRACT_DOCUMENT-DEAL_NUMBER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_TXI_TRACT_DOCUMENT-DEAL_NUMBER.
WRITE:/ 'New Value:', ld_input.
ENDFORM. 

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

TYPES: BEGIN OF T_TXI_TRACT_DOCUMENT_STR, 
MANDT TYPE STRING,
OS_GUID TYPE STRING,
BUSTRANSID TYPE STRING,
DOCUMENTID TYPE STRING,
TR_ACC_CODE TYPE STRING,
VALUATION_AREA TYPE STRING,
AWREF TYPE STRING,
AWORG TYPE STRING,
ACPOSTINGDATE TYPE STRING,
ACPOSTINGPERIOD TYPE STRING,
ACPOSTINGYEAR TYPE STRING,
REVERSAL_AWREF TYPE STRING,
REVERSAL_AWORG TYPE STRING,
ACREVERSALDATE TYPE STRING,
ACREVERSALPERIOD TYPE STRING,
ACREVERSALYEAR TYPE STRING,
DOCUMENT_STATE TYPE STRING,
LEDGERSELECTION TYPE STRING,
SPECIALLEDGER TYPE STRING,
DOCUMENT_DATE TYPE STRING,
ACC_PRINCIPLE TYPE STRING,
POST_CAT TYPE STRING,
CREATE_CAT TYPE STRING,
REF_BUSTRANSID TYPE STRING,
BUSTRANSCAT TYPE STRING,
DEAL_NUMBER TYPE STRING,
BKTXT TYPE STRING,
XBLNR TYPE STRING,
ACREVERSALREASON TYPE STRING,
TR_REV_REASON TYPE STRING,
BUPLA TYPE STRING,
SECCO TYPE STRING,
USER_NDATA_CLS TYPE STRING,
USER_NDATA_OID TYPE STRING,END OF T_EKKO_STR.
DATA: WA_TXI_TRACT_DOCUMENT_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_TRACT_DOCUMENT_STR-MANDT sy-vline 
WA_TXI_TRACT_DOCUMENT_STR-OS_GUID sy-vline 
WA_TXI_TRACT_DOCUMENT_STR-BUSTRANSID sy-vline 
WA_TXI_TRACT_DOCUMENT_STR-DOCUMENTID sy-vline 
WA_TXI_TRACT_DOCUMENT_STR-TR_ACC_CODE sy-vline 
WA_TXI_TRACT_DOCUMENT_STR-VALUATION_AREA sy-vline 
WA_TXI_TRACT_DOCUMENT_STR-AWREF sy-vline 
WA_TXI_TRACT_DOCUMENT_STR-AWORG sy-vline 
WA_TXI_TRACT_DOCUMENT_STR-ACPOSTINGDATE sy-vline 
WA_TXI_TRACT_DOCUMENT_STR-ACPOSTINGPERIOD sy-vline 
WA_TXI_TRACT_DOCUMENT_STR-ACPOSTINGYEAR sy-vline 
WA_TXI_TRACT_DOCUMENT_STR-REVERSAL_AWREF sy-vline 
WA_TXI_TRACT_DOCUMENT_STR-REVERSAL_AWORG sy-vline 
WA_TXI_TRACT_DOCUMENT_STR-ACREVERSALDATE sy-vline 
WA_TXI_TRACT_DOCUMENT_STR-ACREVERSALPERIOD sy-vline 
WA_TXI_TRACT_DOCUMENT_STR-ACREVERSALYEAR sy-vline 
WA_TXI_TRACT_DOCUMENT_STR-DOCUMENT_STATE sy-vline 
WA_TXI_TRACT_DOCUMENT_STR-LEDGERSELECTION sy-vline 
WA_TXI_TRACT_DOCUMENT_STR-SPECIALLEDGER sy-vline 
WA_TXI_TRACT_DOCUMENT_STR-DOCUMENT_DATE sy-vline 
WA_TXI_TRACT_DOCUMENT_STR-ACC_PRINCIPLE sy-vline 
WA_TXI_TRACT_DOCUMENT_STR-POST_CAT sy-vline 
WA_TXI_TRACT_DOCUMENT_STR-CREATE_CAT sy-vline 
WA_TXI_TRACT_DOCUMENT_STR-REF_BUSTRANSID sy-vline 
WA_TXI_TRACT_DOCUMENT_STR-BUSTRANSCAT sy-vline 
WA_TXI_TRACT_DOCUMENT_STR-DEAL_NUMBER sy-vline 
WA_TXI_TRACT_DOCUMENT_STR-BKTXT sy-vline 
WA_TXI_TRACT_DOCUMENT_STR-XBLNR sy-vline 
WA_TXI_TRACT_DOCUMENT_STR-ACREVERSALREASON sy-vline 
WA_TXI_TRACT_DOCUMENT_STR-TR_REV_REASON sy-vline 
WA_TXI_TRACT_DOCUMENT_STR-BUPLA sy-vline 
WA_TXI_TRACT_DOCUMENT_STR-SECCO sy-vline 
WA_TXI_TRACT_DOCUMENT_STR-USER_NDATA_CLS sy-vline 
WA_TXI_TRACT_DOCUMENT_STR-USER_NDATA_OID sy-vline      INTO ld_text SEPARATED BY SPACE.

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