ABAP Select data from SAP table MCQAQRB 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 MCQAQRB 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 MCQAQRB. 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 MCQAQRB 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_MCQAQRB TYPE STANDARD TABLE OF MCQAQRB,
      WA_MCQAQRB TYPE MCQAQRB,
      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: <MCQAQRB> TYPE MCQAQRB.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM MCQAQRB
*  INTO TABLE @DATA(IT_MCQAQRB2).
*--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_MCQAQRB INDEX 1 INTO DATA(WA_MCQAQRB2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<MCQAQRB>-SUPKZ = 1.
<MCQAQRB>-PRUEFLOS = 1.
<MCQAQRB>-VORGLFNR = 1.
<MCQAQRB>-MERKNR = 1.
<MCQAQRB>-PROBENR = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_MCQAQRB-QPMK_REF, sy-vline,
  WA_MCQAQRB-QPMK_WERKS, sy-vline,
  WA_MCQAQRB-VERWMERKM, sy-vline,
  WA_MCQAQRB-ERKGEW, sy-vline,
  WA_MCQAQRB-STATUSR, sy-vline,
  WA_MCQAQRB-MBEWERTG, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_MCQAQRB 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_MCQAQRB 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_MCQAQRB INTO WA_MCQAQRB.


*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 PRUEFLOS
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_MCQAQRB-PRUEFLOS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MCQAQRB-PRUEFLOS.
WRITE:/ 'New Value:', ld_input.

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

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

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

*Conversion exit ALPHA, internal->external for field STAFO_RQUN
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_MCQAQRB-STAFO_RQUN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MCQAQRB-STAFO_RQUN.
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_MCQAQRB_STR, 
SUPKZ TYPE STRING,
PRUEFLOS TYPE STRING,
VORGLFNR TYPE STRING,
MERKNR TYPE STRING,
PROBENR TYPE STRING,
QPMK_REF TYPE STRING,
QPMK_WERKS TYPE STRING,
VERWMERKM TYPE STRING,
ERKGEW TYPE STRING,
STATUSR TYPE STRING,
MBEWERTG TYPE STRING,
ATTRIBUT TYPE STRING,
ANZFEHLEH TYPE STRING,
ANTEILNI TYPE STRING,
ANTEIL TYPE STRING,
ANZFEHLER TYPE STRING,
ANZWERTO TYPE STRING,
ANZWERTU TYPE STRING,
MITTELWNI TYPE STRING,
MITTELWERT TYPE STRING,
ANTEILO TYPE STRING,
ANTEILU TYPE STRING,
STEUERKZ TYPE STRING,
TSTICHPRKZ TYPE STRING,
MASSEINHSW TYPE STRING,
ZHLN TYPE STRING,
ZHLNA TYPE STRING,
ZHLNR TYPE STRING,
ZHLNSKIP TYPE STRING,
ZHLNSTPF TYPE STRING,
ZHLNKF TYPE STRING,
ZHLNHF TYPE STRING,
ZHLNNF TYPE STRING,
SUMFEHEH TYPE STRING,
SUMFANT TYPE STRING,
SIGMA TYPE STRING,
SIGMA_NKST TYPE STRING,
XQUER TYPE STRING,
XQUER_NKST TYPE STRING,
ZHLNSTAT TYPE STRING,
SUMEW TYPE STRING,
SUMMW TYPE STRING,
SUMVARIN TYPE STRING,
SUMSIGMAST TYPE STRING,
SUMVAR TYPE STRING,
TOLUN TYPE STRING,
TOLUNNI TYPE STRING,
TOLOB TYPE STRING,
TOLOBNI TYPE STRING,
TOL_NKST TYPE STRING,
CP TYPE STRING,
CPK TYPE STRING,
CP_NKST TYPE STRING,
STAFO_RALL TYPE STRING,
STAFO_RQUN TYPE STRING,
PRUEFDATUV TYPE STRING,
WERKSTPRUE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_MCQAQRB_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_MCQAQRB_STR-SUPKZ sy-vline 
WA_MCQAQRB_STR-PRUEFLOS sy-vline 
WA_MCQAQRB_STR-VORGLFNR sy-vline 
WA_MCQAQRB_STR-MERKNR sy-vline 
WA_MCQAQRB_STR-PROBENR sy-vline 
WA_MCQAQRB_STR-QPMK_REF sy-vline 
WA_MCQAQRB_STR-QPMK_WERKS sy-vline 
WA_MCQAQRB_STR-VERWMERKM sy-vline 
WA_MCQAQRB_STR-ERKGEW sy-vline 
WA_MCQAQRB_STR-STATUSR sy-vline 
WA_MCQAQRB_STR-MBEWERTG sy-vline 
WA_MCQAQRB_STR-ATTRIBUT sy-vline 
WA_MCQAQRB_STR-ANZFEHLEH sy-vline 
WA_MCQAQRB_STR-ANTEILNI sy-vline 
WA_MCQAQRB_STR-ANTEIL sy-vline 
WA_MCQAQRB_STR-ANZFEHLER sy-vline 
WA_MCQAQRB_STR-ANZWERTO sy-vline 
WA_MCQAQRB_STR-ANZWERTU sy-vline 
WA_MCQAQRB_STR-MITTELWNI sy-vline 
WA_MCQAQRB_STR-MITTELWERT sy-vline 
WA_MCQAQRB_STR-ANTEILO sy-vline 
WA_MCQAQRB_STR-ANTEILU sy-vline 
WA_MCQAQRB_STR-STEUERKZ sy-vline 
WA_MCQAQRB_STR-TSTICHPRKZ sy-vline 
WA_MCQAQRB_STR-MASSEINHSW sy-vline 
WA_MCQAQRB_STR-ZHLN sy-vline 
WA_MCQAQRB_STR-ZHLNA sy-vline 
WA_MCQAQRB_STR-ZHLNR sy-vline 
WA_MCQAQRB_STR-ZHLNSKIP sy-vline 
WA_MCQAQRB_STR-ZHLNSTPF sy-vline 
WA_MCQAQRB_STR-ZHLNKF sy-vline 
WA_MCQAQRB_STR-ZHLNHF sy-vline 
WA_MCQAQRB_STR-ZHLNNF sy-vline 
WA_MCQAQRB_STR-SUMFEHEH sy-vline 
WA_MCQAQRB_STR-SUMFANT sy-vline 
WA_MCQAQRB_STR-SIGMA sy-vline 
WA_MCQAQRB_STR-SIGMA_NKST sy-vline 
WA_MCQAQRB_STR-XQUER sy-vline 
WA_MCQAQRB_STR-XQUER_NKST sy-vline 
WA_MCQAQRB_STR-ZHLNSTAT sy-vline 
WA_MCQAQRB_STR-SUMEW sy-vline 
WA_MCQAQRB_STR-SUMMW sy-vline 
WA_MCQAQRB_STR-SUMVARIN sy-vline 
WA_MCQAQRB_STR-SUMSIGMAST sy-vline 
WA_MCQAQRB_STR-SUMVAR sy-vline 
WA_MCQAQRB_STR-TOLUN sy-vline 
WA_MCQAQRB_STR-TOLUNNI sy-vline 
WA_MCQAQRB_STR-TOLOB sy-vline 
WA_MCQAQRB_STR-TOLOBNI sy-vline 
WA_MCQAQRB_STR-TOL_NKST sy-vline 
WA_MCQAQRB_STR-CP sy-vline 
WA_MCQAQRB_STR-CPK sy-vline 
WA_MCQAQRB_STR-CP_NKST sy-vline 
WA_MCQAQRB_STR-STAFO_RALL sy-vline 
WA_MCQAQRB_STR-STAFO_RQUN sy-vline 
WA_MCQAQRB_STR-PRUEFDATUV sy-vline 
WA_MCQAQRB_STR-WERKSTPRUE sy-vline      INTO ld_text SEPARATED BY SPACE.

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