ABAP Select data from SAP table PCSMMATLDATA into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PCSMMATLDATA
*  INTO TABLE @DATA(IT_PCSMMATLDATA2).
*--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_PCSMMATLDATA INDEX 1 INTO DATA(WA_PCSMMATLDATA2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<PCSMMATLDATA>-MANDT = 1.
<PCSMMATLDATA>-CHMLSUPLRMATLUUID = 1.
<PCSMMATLDATA>-CHMLCMPLNCINFOUUID = 1.
<PCSMMATLDATA>-SUPPLIERMATERIALCOMBINEDNAME = 1.
<PCSMMATLDATA>-CHMLCMPLNCINFOCOMBINEDNAME = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_PCSMMATLDATA-CHMLCMPLNCINFOCOMBINEDID, sy-vline,
  WA_PCSMMATLDATA-CHMLSUPLRMATLSUPLRSTS, sy-vline,
  WA_PCSMMATLDATA-CHMLSUPLRMATLSUPLRSTSCRITLTY, sy-vline,
  WA_PCSMMATLDATA-BUSINESSPARTNERFULLNAME, sy-vline,
  WA_PCSMMATLDATA-CHMLCOMPOSITIONUUID, sy-vline,
  WA_PCSMMATLDATA-CHMLCMPSTNINPROCSTATUS, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_PCSMMATLDATA 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_PCSMMATLDATA 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_PCSMMATLDATA INTO WA_PCSMMATLDATA.


*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.
ENDFORM. 

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

TYPES: BEGIN OF T_PCSMMATLDATA_STR, 
MANDT TYPE STRING,
CHMLSUPLRMATLUUID TYPE STRING,
CHMLCMPLNCINFOUUID TYPE STRING,
SUPPLIERMATERIALCOMBINEDNAME TYPE STRING,
CHMLCMPLNCINFOCOMBINEDNAME TYPE STRING,
CHMLCMPLNCINFOCOMBINEDID TYPE STRING,
CHMLSUPLRMATLSUPLRSTS TYPE STRING,
CHMLSUPLRMATLSUPLRSTSCRITLTY TYPE STRING,
BUSINESSPARTNERFULLNAME TYPE STRING,
CHMLCOMPOSITIONUUID TYPE STRING,
CHMLCMPSTNINPROCSTATUS TYPE STRING,
CHMLCMPSTNRELDSTATUS TYPE STRING,
CHMLSUPLRMATLCMPSTNSTS TYPE STRING,
CHMLSUPLRMATLCMPSTNSTSCRITLTY TYPE STRING,
RESPONSIBLEUNIT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_PCSMMATLDATA_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_PCSMMATLDATA_STR-MANDT sy-vline 
WA_PCSMMATLDATA_STR-CHMLSUPLRMATLUUID sy-vline 
WA_PCSMMATLDATA_STR-CHMLCMPLNCINFOUUID sy-vline 
WA_PCSMMATLDATA_STR-SUPPLIERMATERIALCOMBINEDNAME sy-vline 
WA_PCSMMATLDATA_STR-CHMLCMPLNCINFOCOMBINEDNAME sy-vline 
WA_PCSMMATLDATA_STR-CHMLCMPLNCINFOCOMBINEDID sy-vline 
WA_PCSMMATLDATA_STR-CHMLSUPLRMATLSUPLRSTS sy-vline 
WA_PCSMMATLDATA_STR-CHMLSUPLRMATLSUPLRSTSCRITLTY sy-vline 
WA_PCSMMATLDATA_STR-BUSINESSPARTNERFULLNAME sy-vline 
WA_PCSMMATLDATA_STR-CHMLCOMPOSITIONUUID sy-vline 
WA_PCSMMATLDATA_STR-CHMLCMPSTNINPROCSTATUS sy-vline 
WA_PCSMMATLDATA_STR-CHMLCMPSTNRELDSTATUS sy-vline 
WA_PCSMMATLDATA_STR-CHMLSUPLRMATLCMPSTNSTS sy-vline 
WA_PCSMMATLDATA_STR-CHMLSUPLRMATLCMPSTNSTSCRITLTY sy-vline 
WA_PCSMMATLDATA_STR-RESPONSIBLEUNIT sy-vline      INTO ld_text SEPARATED BY SPACE.

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