ABAP Select data from SAP table TXW_ORDER into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM TXW_ORDER
*  INTO TABLE @DATA(IT_TXW_ORDER2).
*--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_TXW_ORDER INDEX 1 INTO DATA(WA_TXW_ORDER2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<TXW_ORDER>-MANDT = 1.
<TXW_ORDER>-BUKRS = 1.
<TXW_ORDER>-AUFNR = 1.
<TXW_ORDER>-KOKRS = 1.
<TXW_ORDER>-KTEXT = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_TXW_ORDER-AUART, sy-vline,
  WA_TXW_ORDER-ASTKZ, sy-vline,
  WA_TXW_ORDER-KOSTV, sy-vline,
  WA_TXW_ORDER-KOSTL, sy-vline,
  WA_TXW_ORDER-KSTAR, sy-vline,
  WA_TXW_ORDER-SAKNR, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_TXW_ORDER 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_TXW_ORDER 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_TXW_ORDER INTO WA_TXW_ORDER.


*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 AUFNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_TXW_ORDER-AUFNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_TXW_ORDER-AUFNR.
WRITE:/ 'New Value:', ld_input.

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

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

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

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

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

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

*Conversion exit ABPSP, internal->external for field PSPEL
CALL FUNCTION 'CONVERSION_EXIT_ABPSP_OUTPUT'
  EXPORTING
    input =                      WA_TXW_ORDER-PSPEL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_TXW_ORDER-PSPEL.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ABPSN, internal->external for field POSID
CALL FUNCTION 'CONVERSION_EXIT_ABPSN_OUTPUT'
  EXPORTING
    input =                      WA_TXW_ORDER-POSID
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_TXW_ORDER-POSID.
WRITE:/ 'New Value:', ld_input.

*Conversion exit SCOPE, internal->external for field SCOPE
CALL FUNCTION 'CONVERSION_EXIT_SCOPE_OUTPUT'
  EXPORTING
    input =                      WA_TXW_ORDER-SCOPE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_TXW_ORDER-SCOPE.
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_TXW_ORDER_STR, 
MANDT TYPE STRING,
BUKRS TYPE STRING,
AUFNR TYPE STRING,
KOKRS TYPE STRING,
KTEXT TYPE STRING,
AUART TYPE STRING,
ASTKZ TYPE STRING,
KOSTV TYPE STRING,
KOSTL TYPE STRING,
KSTAR TYPE STRING,
SAKNR TYPE STRING,
OBJNR TYPE STRING,
OBJNRT TYPE STRING,
ABGSL TYPE STRING,
AUTYP TYPE STRING,
CCKEY TYPE STRING,
GSBER TYPE STRING,
KDAUF TYPE STRING,
KDPOS TYPE STRING,
PRCTR TYPE STRING,
PSPEL TYPE STRING,
POSID TYPE STRING,
SCOPE TYPE STRING,
TXJCD TYPE STRING,
WERKS TYPE STRING,
ERDAT TYPE STRING,
ERNAM TYPE STRING,
AENAM TYPE STRING,
AEDAT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_TXW_ORDER_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_TXW_ORDER_STR-MANDT sy-vline 
WA_TXW_ORDER_STR-BUKRS sy-vline 
WA_TXW_ORDER_STR-AUFNR sy-vline 
WA_TXW_ORDER_STR-KOKRS sy-vline 
WA_TXW_ORDER_STR-KTEXT sy-vline 
WA_TXW_ORDER_STR-AUART sy-vline 
WA_TXW_ORDER_STR-ASTKZ sy-vline 
WA_TXW_ORDER_STR-KOSTV sy-vline 
WA_TXW_ORDER_STR-KOSTL sy-vline 
WA_TXW_ORDER_STR-KSTAR sy-vline 
WA_TXW_ORDER_STR-SAKNR sy-vline 
WA_TXW_ORDER_STR-OBJNR sy-vline 
WA_TXW_ORDER_STR-OBJNRT sy-vline 
WA_TXW_ORDER_STR-ABGSL sy-vline 
WA_TXW_ORDER_STR-AUTYP sy-vline 
WA_TXW_ORDER_STR-CCKEY sy-vline 
WA_TXW_ORDER_STR-GSBER sy-vline 
WA_TXW_ORDER_STR-KDAUF sy-vline 
WA_TXW_ORDER_STR-KDPOS sy-vline 
WA_TXW_ORDER_STR-PRCTR sy-vline 
WA_TXW_ORDER_STR-PSPEL sy-vline 
WA_TXW_ORDER_STR-POSID sy-vline 
WA_TXW_ORDER_STR-SCOPE sy-vline 
WA_TXW_ORDER_STR-TXJCD sy-vline 
WA_TXW_ORDER_STR-WERKS sy-vline 
WA_TXW_ORDER_STR-ERDAT sy-vline 
WA_TXW_ORDER_STR-ERNAM sy-vline 
WA_TXW_ORDER_STR-AENAM sy-vline 
WA_TXW_ORDER_STR-AEDAT sy-vline      INTO ld_text SEPARATED BY SPACE.

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