ABAP Select data from SAP table MASUC 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 MASUC 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 MASUC. 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 MASUC 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_MASUC TYPE STANDARD TABLE OF MASUC,
      WA_MASUC TYPE MASUC,
      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: <MASUC> TYPE MASUC.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM MASUC
*  INTO TABLE @DATA(IT_MASUC2).
*--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_MASUC INDEX 1 INTO DATA(WA_MASUC2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<MASUC>-MATNR = 1.
<MASUC>-MAKTX = 1.
<MASUC>-RWDA1 = 1.
<MASUC>-BERW1 = 1.
<MASUC>-RWDA2 = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_MASUC-BERW2, sy-vline,
  WA_MASUC-RWDA3, sy-vline,
  WA_MASUC-BERW3, sy-vline,
  WA_MASUC-DSDAB, sy-vline,
  WA_MASUC-SLKZ1, sy-vline,
  WA_MASUC-SLKZ2, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_MASUC 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_MASUC 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_MASUC INTO WA_MASUC.


*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_MASUC-MATNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MASUC-MATNR.
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_MASUC_STR, 
MATNR TYPE STRING,
MAKTX TYPE STRING,
RWDA1 TYPE STRING,
BERW1 TYPE STRING,
RWDA2 TYPE STRING,
BERW2 TYPE STRING,
RWDA3 TYPE STRING,
BERW3 TYPE STRING,
DSDAB TYPE STRING,
SLKZ1 TYPE STRING,
SLKZ2 TYPE STRING,
SLKZ3 TYPE STRING,
SLKZ4 TYPE STRING,
SLKZ5 TYPE STRING,
SLKZ6 TYPE STRING,
SLKZ7 TYPE STRING,
SLKZ8 TYPE STRING,
BDBKZ TYPE STRING,
NBEKZ TYPE STRING,
NAUKZ TYPE STRING,
AMSLR TYPE STRING,
AMSLY TYPE STRING,
AMSLG TYPE STRING,END OF T_EKKO_STR.
DATA: WA_MASUC_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_MASUC_STR-MATNR sy-vline 
WA_MASUC_STR-MAKTX sy-vline 
WA_MASUC_STR-RWDA1 sy-vline 
WA_MASUC_STR-BERW1 sy-vline 
WA_MASUC_STR-RWDA2 sy-vline 
WA_MASUC_STR-BERW2 sy-vline 
WA_MASUC_STR-RWDA3 sy-vline 
WA_MASUC_STR-BERW3 sy-vline 
WA_MASUC_STR-DSDAB sy-vline 
WA_MASUC_STR-SLKZ1 sy-vline 
WA_MASUC_STR-SLKZ2 sy-vline 
WA_MASUC_STR-SLKZ3 sy-vline 
WA_MASUC_STR-SLKZ4 sy-vline 
WA_MASUC_STR-SLKZ5 sy-vline 
WA_MASUC_STR-SLKZ6 sy-vline 
WA_MASUC_STR-SLKZ7 sy-vline 
WA_MASUC_STR-SLKZ8 sy-vline 
WA_MASUC_STR-BDBKZ sy-vline 
WA_MASUC_STR-NBEKZ sy-vline 
WA_MASUC_STR-NAUKZ sy-vline 
WA_MASUC_STR-AMSLR sy-vline 
WA_MASUC_STR-AMSLY sy-vline 
WA_MASUC_STR-AMSLG sy-vline      INTO ld_text SEPARATED BY SPACE.

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