ABAP Select data from SAP table CPMACSMASSMTST into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM CPMACSMASSMTST
*  INTO TABLE @DATA(IT_CPMACSMASSMTST2).
*--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_CPMACSMASSMTST INDEX 1 INTO DATA(WA_CPMACSMASSMTST2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<CPMACSMASSMTST>-MANDT = 1.
<CPMACSMASSMTST>-CMPLRQRSLTSUPLRMATLASSMTUUID = 1.
<CPMACSMASSMTST>-CMPLRQRSLTUUID = 1.
<CPMACSMASSMTST>-CHMLSUPLRMATLUUID = 1.
<CPMACSMASSMTST>-CMPLRQRSLTSUPLRMATLUUID = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_CPMACSMASSMTST-CMPLRQRSLTNAVGNLINK, sy-vline,
  WA_CPMACSMASSMTST-CMPLRQRSLTISACTIVEENTITY, sy-vline,
  WA_CPMACSMASSMTST-CMPLRQRSLTOVERALLSTATUS, sy-vline,
  WA_CPMACSMASSMTST-CMPLRQRSLTCMPLNCSTSTXT, sy-vline,
  WA_CPMACSMASSMTST-CMPLRQRSLTCMPLNCSTSCRITICALITY, sy-vline,
  WA_CPMACSMASSMTST-BUSINESSPARTNERSUPPLIER, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_CPMACSMASSMTST 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_CPMACSMASSMTST 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_CPMACSMASSMTST INTO WA_CPMACSMASSMTST.


*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 BUSINESSPARTNERSUPPLIER
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_CPMACSMASSMTST-BUSINESSPARTNERSUPPLIER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CPMACSMASSMTST-BUSINESSPARTNERSUPPLIER.
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_CPMACSMASSMTST_STR, 
MANDT TYPE STRING,
CMPLRQRSLTSUPLRMATLASSMTUUID TYPE STRING,
CMPLRQRSLTUUID TYPE STRING,
CHMLSUPLRMATLUUID TYPE STRING,
CMPLRQRSLTSUPLRMATLUUID TYPE STRING,
CMPLRQRSLTNAVGNLINK TYPE STRING,
CMPLRQRSLTISACTIVEENTITY TYPE STRING,
CMPLRQRSLTOVERALLSTATUS TYPE STRING,
CMPLRQRSLTCMPLNCSTSTXT TYPE STRING,
CMPLRQRSLTCMPLNCSTSCRITICALITY TYPE STRING,
BUSINESSPARTNERSUPPLIER TYPE STRING,
SUPPLIERNAME TYPE STRING,
CHMLSUPLRMATLSUPLRSTS TYPE STRING,
CHMLSUPLRMATLSUPLRSTSNAME TYPE STRING,
CHMLSUPLRMATLSUPLRSTSCRITLTY TYPE STRING,
SUPPLIERMATERIALNUMBER TYPE STRING,
CHMLSUPLRMATLNAME TYPE STRING,
SUPPLIER TYPE STRING,
BUSINESSPARTNERCOMPANY TYPE STRING,END OF T_EKKO_STR.
DATA: WA_CPMACSMASSMTST_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_CPMACSMASSMTST_STR-MANDT sy-vline 
WA_CPMACSMASSMTST_STR-CMPLRQRSLTSUPLRMATLASSMTUUID sy-vline 
WA_CPMACSMASSMTST_STR-CMPLRQRSLTUUID sy-vline 
WA_CPMACSMASSMTST_STR-CHMLSUPLRMATLUUID sy-vline 
WA_CPMACSMASSMTST_STR-CMPLRQRSLTSUPLRMATLUUID sy-vline 
WA_CPMACSMASSMTST_STR-CMPLRQRSLTNAVGNLINK sy-vline 
WA_CPMACSMASSMTST_STR-CMPLRQRSLTISACTIVEENTITY sy-vline 
WA_CPMACSMASSMTST_STR-CMPLRQRSLTOVERALLSTATUS sy-vline 
WA_CPMACSMASSMTST_STR-CMPLRQRSLTCMPLNCSTSTXT sy-vline 
WA_CPMACSMASSMTST_STR-CMPLRQRSLTCMPLNCSTSCRITICALITY sy-vline 
WA_CPMACSMASSMTST_STR-BUSINESSPARTNERSUPPLIER sy-vline 
WA_CPMACSMASSMTST_STR-SUPPLIERNAME sy-vline 
WA_CPMACSMASSMTST_STR-CHMLSUPLRMATLSUPLRSTS sy-vline 
WA_CPMACSMASSMTST_STR-CHMLSUPLRMATLSUPLRSTSNAME sy-vline 
WA_CPMACSMASSMTST_STR-CHMLSUPLRMATLSUPLRSTSCRITLTY sy-vline 
WA_CPMACSMASSMTST_STR-SUPPLIERMATERIALNUMBER sy-vline 
WA_CPMACSMASSMTST_STR-CHMLSUPLRMATLNAME sy-vline 
WA_CPMACSMASSMTST_STR-SUPPLIER sy-vline 
WA_CPMACSMASSMTST_STR-BUSINESSPARTNERCOMPANY sy-vline      INTO ld_text SEPARATED BY SPACE.

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