ABAP Select data from SAP table TXW_MAT into internal table

Get Example source ABAP code based on a different SAP table
  Get ABAP code

Below is a number of ABAP code snippets to demonstrate how to select data from SAP TXW_MAT 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_MAT. 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_MAT 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_MAT TYPE STANDARD TABLE OF TXW_MAT,
      WA_TXW_MAT TYPE TXW_MAT,
      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_MAT> TYPE TXW_MAT.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM TXW_MAT
*  INTO TABLE @DATA(IT_TXW_MAT2).
*--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_MAT INDEX 1 INTO DATA(WA_TXW_MAT2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<TXW_MAT>-MANDT = 1.
<TXW_MAT>-MATNR = 1.
<TXW_MAT>-WERKS = 1.
<TXW_MAT>-MTART = 1.
<TXW_MAT>-MATKL = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_TXW_MAT-MAKTX, sy-vline,
  WA_TXW_MAT-NORMT, sy-vline,
  WA_TXW_MAT-PRDHA, sy-vline,
  WA_TXW_MAT-ATTYP, sy-vline,
  WA_TXW_MAT-STOFF, sy-vline,
  WA_TXW_MAT-KZUMW, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_TXW_MAT 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_MAT 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_MAT INTO WA_TXW_MAT.


*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 MATN1, internal->external for field MATNR
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_TXW_MAT-MATNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_TXW_MAT-MATNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit MATN3, internal->external for field STOFF
CALL FUNCTION 'CONVERSION_EXIT_MATN3_OUTPUT'
  EXPORTING
    input =                      WA_TXW_MAT-STOFF
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_TXW_MAT-STOFF.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field MEINS
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_TXW_MAT-MEINS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_TXW_MAT-MEINS.
WRITE:/ 'New Value:', ld_input.

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

*Conversion exit MATN1, internal->external for field STDPD
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_TXW_MAT-STDPD
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_TXW_MAT-STDPD.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field EXPME
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_TXW_MAT-EXPME
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_TXW_MAT-EXPME.
WRITE:/ 'New Value:', ld_input.

*Conversion exit MATN1, internal->external for field SATNR
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_TXW_MAT-SATNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_TXW_MAT-SATNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit MATNL, internal->external for field MATNR_EXT
CALL FUNCTION 'CONVERSION_EXIT_MATNL_OUTPUT'
  EXPORTING
    input =                      WA_TXW_MAT-MATNR_EXT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_TXW_MAT-MATNR_EXT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit MATNW, internal->external for field MATNR_VERS
CALL FUNCTION 'CONVERSION_EXIT_MATNW_OUTPUT'
  EXPORTING
    input =                      WA_TXW_MAT-MATNR_VERS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_TXW_MAT-MATNR_VERS.
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_MAT_STR, 
MANDT TYPE STRING,
MATNR TYPE STRING,
WERKS TYPE STRING,
MTART TYPE STRING,
MATKL TYPE STRING,
MAKTX TYPE STRING,
NORMT TYPE STRING,
PRDHA TYPE STRING,
ATTYP TYPE STRING,
STOFF TYPE STRING,
KZUMW TYPE STRING,
TAKLV TYPE STRING,
MEINS TYPE STRING,
PRCTR TYPE STRING,
ATPKZ TYPE STRING,
PRENG TYPE STRING,
STDPD TYPE STRING,
EXPME TYPE STRING,
MTVER TYPE STRING,
PREFE TYPE STRING,
PRENC TYPE STRING,
PRENO TYPE STRING,
PREND TYPE STRING,
PRENE TYPE STRING,
HERBL TYPE STRING,
HERKL TYPE STRING,
HERKR TYPE STRING,
CUOBJ TYPE STRING,
OTYPE TYPE STRING,
OBJID TYPE STRING,
EXTWG TYPE STRING,
SATNR TYPE STRING,
SCHGT TYPE STRING,
BISMT TYPE STRING,
ERSDA TYPE STRING,
BWTTY TYPE STRING,
MATNR_EXT TYPE STRING,
MATNR_VERS TYPE STRING,
ERNAM TYPE STRING,
STEUC TYPE STRING,
CASNR TYPE STRING,END OF T_EKKO_STR.
DATA: WA_TXW_MAT_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_MAT_STR-MANDT sy-vline 
WA_TXW_MAT_STR-MATNR sy-vline 
WA_TXW_MAT_STR-WERKS sy-vline 
WA_TXW_MAT_STR-MTART sy-vline 
WA_TXW_MAT_STR-MATKL sy-vline 
WA_TXW_MAT_STR-MAKTX sy-vline 
WA_TXW_MAT_STR-NORMT sy-vline 
WA_TXW_MAT_STR-PRDHA sy-vline 
WA_TXW_MAT_STR-ATTYP sy-vline 
WA_TXW_MAT_STR-STOFF sy-vline 
WA_TXW_MAT_STR-KZUMW sy-vline 
WA_TXW_MAT_STR-TAKLV sy-vline 
WA_TXW_MAT_STR-MEINS sy-vline 
WA_TXW_MAT_STR-PRCTR sy-vline 
WA_TXW_MAT_STR-ATPKZ sy-vline 
WA_TXW_MAT_STR-PRENG sy-vline 
WA_TXW_MAT_STR-STDPD sy-vline 
WA_TXW_MAT_STR-EXPME sy-vline 
WA_TXW_MAT_STR-MTVER sy-vline 
WA_TXW_MAT_STR-PREFE sy-vline 
WA_TXW_MAT_STR-PRENC sy-vline 
WA_TXW_MAT_STR-PRENO sy-vline 
WA_TXW_MAT_STR-PREND sy-vline 
WA_TXW_MAT_STR-PRENE sy-vline 
WA_TXW_MAT_STR-HERBL sy-vline 
WA_TXW_MAT_STR-HERKL sy-vline 
WA_TXW_MAT_STR-HERKR sy-vline 
WA_TXW_MAT_STR-CUOBJ sy-vline 
WA_TXW_MAT_STR-OTYPE sy-vline 
WA_TXW_MAT_STR-OBJID sy-vline 
WA_TXW_MAT_STR-EXTWG sy-vline 
WA_TXW_MAT_STR-SATNR sy-vline 
WA_TXW_MAT_STR-SCHGT sy-vline 
WA_TXW_MAT_STR-BISMT sy-vline 
WA_TXW_MAT_STR-ERSDA sy-vline 
WA_TXW_MAT_STR-BWTTY sy-vline 
WA_TXW_MAT_STR-MATNR_EXT sy-vline 
WA_TXW_MAT_STR-MATNR_VERS sy-vline 
WA_TXW_MAT_STR-ERNAM sy-vline 
WA_TXW_MAT_STR-STEUC sy-vline 
WA_TXW_MAT_STR-CASNR sy-vline      INTO ld_text SEPARATED BY SPACE.

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