ABAP Select data from SAP table CSXMAT into internal table

Get Example source ABAP code based on a different SAP table
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Below is a number of ABAP code snippets to demonstrate how to select data from SAP CSXMAT 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 CSXMAT. 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 CSXMAT 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_CSXMAT TYPE STANDARD TABLE OF CSXMAT,
      WA_CSXMAT TYPE CSXMAT,
      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: <CSXMAT> TYPE CSXMAT.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM CSXMAT
*  INTO TABLE @DATA(IT_CSXMAT2).
*--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_CSXMAT INDEX 1 INTO DATA(WA_CSXMAT2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<CSXMAT>-MATNR = 1.
<CSXMAT>-MAKTX = 1.
<CSXMAT>-WERKS = 1.
<CSXMAT>-PRWRK = 1.
<CSXMAT>-MTART = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_CSXMAT-VPSTA, sy-vline,
  WA_CSXMAT-FSTAT, sy-vline,
  WA_CSXMAT-MATKL, sy-vline,
  WA_CSXMAT-MMEIN, sy-vline,
  WA_CSXMAT-BWTTY, sy-vline,
  WA_CSXMAT-VPRSV, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_CSXMAT 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_CSXMAT 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_CSXMAT INTO WA_CSXMAT.


*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_CSXMAT-MATNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CSXMAT-MATNR.
WRITE:/ 'New Value:', ld_input.

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

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

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

*Conversion exit ALPHA, internal->external for field DOKNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_CSXMAT-DOKNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CSXMAT-DOKNR.
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_CSXMAT_STR, 
MATNR TYPE STRING,
MAKTX TYPE STRING,
WERKS TYPE STRING,
PRWRK TYPE STRING,
MTART TYPE STRING,
VPSTA TYPE STRING,
FSTAT TYPE STRING,
MATKL TYPE STRING,
MMEIN TYPE STRING,
BWTTY TYPE STRING,
VPRSV TYPE STRING,
STPRS TYPE STRING,
VERPR TYPE STRING,
PREIH TYPE STRING,
XCHAR TYPE STRING,
KZECH TYPE STRING,
KZWSM TYPE STRING,
MMSTA TYPE STRING,
MMSTD TYPE STRING,
MSTAE TYPE STRING,
MSTDE TYPE STRING,
ZEINR TYPE STRING,
ZEIVR TYPE STRING,
ZEIAR TYPE STRING,
ZEIFO TYPE STRING,
BLATT TYPE STRING,
BLANZ TYPE STRING,
VERID TYPE STRING,
DISST TYPE STRING,
DISMM TYPE STRING,
AUSSS TYPE STRING,
KAUSF TYPE STRING,
SOBSL TYPE STRING,
SOBSK TYPE STRING,
SERNP TYPE STRING,
KZAUS TYPE STRING,
AUSDT TYPE STRING,
NFMAT TYPE STRING,
RGEKZ TYPE STRING,
KZDKZ TYPE STRING,
UMREZ TYPE STRING,
UMREN TYPE STRING,
LGPRO TYPE STRING,
PRCTR TYPE STRING,
SBDKZ TYPE STRING,
KZREV TYPE STRING,
KZEFF TYPE STRING,
KZKFG TYPE STRING,
CUOBJ TYPE STRING,
MCUOB TYPE STRING,
XCUOB TYPE STRING,
NCONF TYPE STRING,
STAWN TYPE STRING,
PREFE TYPE STRING,
MSCHG TYPE STRING,
STKTX TYPE STRING,
FXPRU TYPE STRING,
ABLAD TYPE STRING,
WEMPF TYPE STRING,
DOKAR TYPE STRING,
DOKNR TYPE STRING,
DOKVR TYPE STRING,
DOKTL TYPE STRING,
DKTXT TYPE STRING,
STABK TYPE STRING,
DOSTX TYPE STRING,
LABOR TYPE STRING,
LOEDK TYPE STRING,END OF T_EKKO_STR.
DATA: WA_CSXMAT_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_CSXMAT_STR-MATNR sy-vline 
WA_CSXMAT_STR-MAKTX sy-vline 
WA_CSXMAT_STR-WERKS sy-vline 
WA_CSXMAT_STR-PRWRK sy-vline 
WA_CSXMAT_STR-MTART sy-vline 
WA_CSXMAT_STR-VPSTA sy-vline 
WA_CSXMAT_STR-FSTAT sy-vline 
WA_CSXMAT_STR-MATKL sy-vline 
WA_CSXMAT_STR-MMEIN sy-vline 
WA_CSXMAT_STR-BWTTY sy-vline 
WA_CSXMAT_STR-VPRSV sy-vline 
WA_CSXMAT_STR-STPRS sy-vline 
WA_CSXMAT_STR-VERPR sy-vline 
WA_CSXMAT_STR-PREIH sy-vline 
WA_CSXMAT_STR-XCHAR sy-vline 
WA_CSXMAT_STR-KZECH sy-vline 
WA_CSXMAT_STR-KZWSM sy-vline 
WA_CSXMAT_STR-MMSTA sy-vline 
WA_CSXMAT_STR-MMSTD sy-vline 
WA_CSXMAT_STR-MSTAE sy-vline 
WA_CSXMAT_STR-MSTDE sy-vline 
WA_CSXMAT_STR-ZEINR sy-vline 
WA_CSXMAT_STR-ZEIVR sy-vline 
WA_CSXMAT_STR-ZEIAR sy-vline 
WA_CSXMAT_STR-ZEIFO sy-vline 
WA_CSXMAT_STR-BLATT sy-vline 
WA_CSXMAT_STR-BLANZ sy-vline 
WA_CSXMAT_STR-VERID sy-vline 
WA_CSXMAT_STR-DISST sy-vline 
WA_CSXMAT_STR-DISMM sy-vline 
WA_CSXMAT_STR-AUSSS sy-vline 
WA_CSXMAT_STR-KAUSF sy-vline 
WA_CSXMAT_STR-SOBSL sy-vline 
WA_CSXMAT_STR-SOBSK sy-vline 
WA_CSXMAT_STR-SERNP sy-vline 
WA_CSXMAT_STR-KZAUS sy-vline 
WA_CSXMAT_STR-AUSDT sy-vline 
WA_CSXMAT_STR-NFMAT sy-vline 
WA_CSXMAT_STR-RGEKZ sy-vline 
WA_CSXMAT_STR-KZDKZ sy-vline 
WA_CSXMAT_STR-UMREZ sy-vline 
WA_CSXMAT_STR-UMREN sy-vline 
WA_CSXMAT_STR-LGPRO sy-vline 
WA_CSXMAT_STR-PRCTR sy-vline 
WA_CSXMAT_STR-SBDKZ sy-vline 
WA_CSXMAT_STR-KZREV sy-vline 
WA_CSXMAT_STR-KZEFF sy-vline 
WA_CSXMAT_STR-KZKFG sy-vline 
WA_CSXMAT_STR-CUOBJ sy-vline 
WA_CSXMAT_STR-MCUOB sy-vline 
WA_CSXMAT_STR-XCUOB sy-vline 
WA_CSXMAT_STR-NCONF sy-vline 
WA_CSXMAT_STR-STAWN sy-vline 
WA_CSXMAT_STR-PREFE sy-vline 
WA_CSXMAT_STR-MSCHG sy-vline 
WA_CSXMAT_STR-STKTX sy-vline 
WA_CSXMAT_STR-FXPRU sy-vline 
WA_CSXMAT_STR-ABLAD sy-vline 
WA_CSXMAT_STR-WEMPF sy-vline 
WA_CSXMAT_STR-DOKAR sy-vline 
WA_CSXMAT_STR-DOKNR sy-vline 
WA_CSXMAT_STR-DOKVR sy-vline 
WA_CSXMAT_STR-DOKTL sy-vline 
WA_CSXMAT_STR-DKTXT sy-vline 
WA_CSXMAT_STR-STABK sy-vline 
WA_CSXMAT_STR-DOSTX sy-vline 
WA_CSXMAT_STR-LABOR sy-vline 
WA_CSXMAT_STR-LOEDK sy-vline      INTO ld_text SEPARATED BY SPACE.

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