ABAP Select data from SAP table MARC_QMAT_CBC into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM MARC_QMAT_CBC
*  INTO TABLE @DATA(IT_MARC_QMAT_CBC2).
*--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_MARC_QMAT_CBC INDEX 1 INTO DATA(WA_MARC_QMAT_CBC2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<MARC_QMAT_CBC>-I_MANDT = 1.
<MARC_QMAT_CBC>-I_MATNR = 1.
<MARC_QMAT_CBC>-I_WERKS = 1.
<MARC_QMAT_CBC>-I_ART1 = 1.
<MARC_QMAT_CBC>-I_AFR = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_MARC_QMAT_CBC-I_AKTIV1, sy-vline,
  WA_MARC_QMAT_CBC-I_APA1, sy-vline,
  WA_MARC_QMAT_CBC-I_APP, sy-vline,
  WA_MARC_QMAT_CBC-I_AVE, sy-vline,
  WA_MARC_QMAT_CBC-I_CHG, sy-vline,
  WA_MARC_QMAT_CBC-I_CONF, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_MARC_QMAT_CBC 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_MARC_QMAT_CBC 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_MARC_QMAT_CBC INTO WA_MARC_QMAT_CBC.


*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 I_MATNR
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_MARC_QMAT_CBC-I_MATNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MARC_QMAT_CBC-I_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_MARC_QMAT_CBC_STR, 
I_MANDT TYPE STRING,
I_MATNR TYPE STRING,
I_WERKS TYPE STRING,
I_ART1 TYPE STRING,
I_AFR TYPE STRING,
I_AKTIV1 TYPE STRING,
I_APA1 TYPE STRING,
I_APP TYPE STRING,
I_AVE TYPE STRING,
I_CHG TYPE STRING,
I_CONF TYPE STRING,
I_DYN TYPE STRING,
I_EIN TYPE STRING,
I_HPZ TYPE STRING,
I_INSMK TYPE STRING,
I_KZDKZ TYPE STRING,
I_MER TYPE STRING,
I_MPB TYPE STRING,
I_MPDAU TYPE STRING,
I_MST TYPE STRING,
I_MS_FLG TYPE STRING,
I_PPL TYPE STRING,
I_PRFRQ TYPE STRING,
I_QKZVERF TYPE STRING,
I_QMATA TYPE STRING,
I_QMPUR TYPE STRING,
I_QSSYS TYPE STRING,
I_QZGTP TYPE STRING,
I_RBNRM TYPE STRING,
I_SPEZUEBER TYPE STRING,
I_SPROZ TYPE STRING,
I_SSQSS TYPE STRING,END OF T_EKKO_STR.
DATA: WA_MARC_QMAT_CBC_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_MARC_QMAT_CBC_STR-I_MANDT sy-vline 
WA_MARC_QMAT_CBC_STR-I_MATNR sy-vline 
WA_MARC_QMAT_CBC_STR-I_WERKS sy-vline 
WA_MARC_QMAT_CBC_STR-I_ART1 sy-vline 
WA_MARC_QMAT_CBC_STR-I_AFR sy-vline 
WA_MARC_QMAT_CBC_STR-I_AKTIV1 sy-vline 
WA_MARC_QMAT_CBC_STR-I_APA1 sy-vline 
WA_MARC_QMAT_CBC_STR-I_APP sy-vline 
WA_MARC_QMAT_CBC_STR-I_AVE sy-vline 
WA_MARC_QMAT_CBC_STR-I_CHG sy-vline 
WA_MARC_QMAT_CBC_STR-I_CONF sy-vline 
WA_MARC_QMAT_CBC_STR-I_DYN sy-vline 
WA_MARC_QMAT_CBC_STR-I_EIN sy-vline 
WA_MARC_QMAT_CBC_STR-I_HPZ sy-vline 
WA_MARC_QMAT_CBC_STR-I_INSMK sy-vline 
WA_MARC_QMAT_CBC_STR-I_KZDKZ sy-vline 
WA_MARC_QMAT_CBC_STR-I_MER sy-vline 
WA_MARC_QMAT_CBC_STR-I_MPB sy-vline 
WA_MARC_QMAT_CBC_STR-I_MPDAU sy-vline 
WA_MARC_QMAT_CBC_STR-I_MST sy-vline 
WA_MARC_QMAT_CBC_STR-I_MS_FLG sy-vline 
WA_MARC_QMAT_CBC_STR-I_PPL sy-vline 
WA_MARC_QMAT_CBC_STR-I_PRFRQ sy-vline 
WA_MARC_QMAT_CBC_STR-I_QKZVERF sy-vline 
WA_MARC_QMAT_CBC_STR-I_QMATA sy-vline 
WA_MARC_QMAT_CBC_STR-I_QMPUR sy-vline 
WA_MARC_QMAT_CBC_STR-I_QSSYS sy-vline 
WA_MARC_QMAT_CBC_STR-I_QZGTP sy-vline 
WA_MARC_QMAT_CBC_STR-I_RBNRM sy-vline 
WA_MARC_QMAT_CBC_STR-I_SPEZUEBER sy-vline 
WA_MARC_QMAT_CBC_STR-I_SPROZ sy-vline 
WA_MARC_QMAT_CBC_STR-I_SSQSS sy-vline      INTO ld_text SEPARATED BY SPACE.

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