ABAP Select data from SAP table QAMVRMS into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM QAMVRMS
*  INTO TABLE @DATA(IT_QAMVRMS2).
*--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_QAMVRMS INDEX 1 INTO DATA(WA_QAMVRMS2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<QAMVRMS>-MANDANT = 1.
<QAMVRMS>-PRUEFLOS = 1.
<QAMVRMS>-VORGLFNR = 1.
<QAMVRMS>-MERKNR = 1.
<QAMVRMS>-REFOBJ = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_QAMVRMS-ERSTELLER, sy-vline,
  WA_QAMVRMS-ERSTELLDAT, sy-vline,
  WA_QAMVRMS-ERSTELLZEIT, sy-vline,
  WA_QAMVRMS-AENDERER, sy-vline,
  WA_QAMVRMS-AENDERDAT, sy-vline,
  WA_QAMVRMS-AENDERZEIT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_QAMVRMS 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_QAMVRMS 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_QAMVRMS INTO WA_QAMVRMS.


*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_QAMVRMS-PRUEFLOS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_QAMVRMS-PRUEFLOS.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field MASSEINHSW
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_QAMVRMS-MASSEINHSW
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_QAMVRMS-MASSEINHSW.
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_QAMVRMS_STR, 
MANDANT TYPE STRING,
PRUEFLOS TYPE STRING,
VORGLFNR TYPE STRING,
MERKNR TYPE STRING,
REFOBJ TYPE STRING,
ERSTELLER TYPE STRING,
ERSTELLDAT TYPE STRING,
ERSTELLZEIT TYPE STRING,
AENDERER TYPE STRING,
AENDERDAT TYPE STRING,
AENDERZEIT TYPE STRING,
SATZSTATUS TYPE STRING,
MBEWERTGMS TYPE STRING,
ANZFEHLEH TYPE STRING,
ANTEILNI TYPE STRING,
KATAB1 TYPE STRING,
KATALGART1 TYPE STRING,
AUSWMENGE1 TYPE STRING,
AUSWMGWRK1 TYPE STRING,
STELLEN TYPE STRING,
MASSEINHSW TYPE STRING,
SOLLWERT TYPE STRING,
SOLLWNI TYPE STRING,
TOLERANZOB TYPE STRING,
TOLOBNI TYPE STRING,
TOLERANZUN TYPE STRING,
TOLUNNI TYPE STRING,
GRENZEOB1 TYPE STRING,
GRENZOB1NI TYPE STRING,
GRENZEUN1 TYPE STRING,
GRENZUN1NI TYPE STRING,
GRENZEOB2 TYPE STRING,
GRENZOB2NI TYPE STRING,
GRENZEUN2 TYPE STRING,
GRENZUN2NI TYPE STRING,
DUMMY10 TYPE STRING,
DUMMY20 TYPE STRING,
DUMMY40 TYPE STRING,END OF T_EKKO_STR.
DATA: WA_QAMVRMS_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_QAMVRMS_STR-MANDANT sy-vline 
WA_QAMVRMS_STR-PRUEFLOS sy-vline 
WA_QAMVRMS_STR-VORGLFNR sy-vline 
WA_QAMVRMS_STR-MERKNR sy-vline 
WA_QAMVRMS_STR-REFOBJ sy-vline 
WA_QAMVRMS_STR-ERSTELLER sy-vline 
WA_QAMVRMS_STR-ERSTELLDAT sy-vline 
WA_QAMVRMS_STR-ERSTELLZEIT sy-vline 
WA_QAMVRMS_STR-AENDERER sy-vline 
WA_QAMVRMS_STR-AENDERDAT sy-vline 
WA_QAMVRMS_STR-AENDERZEIT sy-vline 
WA_QAMVRMS_STR-SATZSTATUS sy-vline 
WA_QAMVRMS_STR-MBEWERTGMS sy-vline 
WA_QAMVRMS_STR-ANZFEHLEH sy-vline 
WA_QAMVRMS_STR-ANTEILNI sy-vline 
WA_QAMVRMS_STR-KATAB1 sy-vline 
WA_QAMVRMS_STR-KATALGART1 sy-vline 
WA_QAMVRMS_STR-AUSWMENGE1 sy-vline 
WA_QAMVRMS_STR-AUSWMGWRK1 sy-vline 
WA_QAMVRMS_STR-STELLEN sy-vline 
WA_QAMVRMS_STR-MASSEINHSW sy-vline 
WA_QAMVRMS_STR-SOLLWERT sy-vline 
WA_QAMVRMS_STR-SOLLWNI sy-vline 
WA_QAMVRMS_STR-TOLERANZOB sy-vline 
WA_QAMVRMS_STR-TOLOBNI sy-vline 
WA_QAMVRMS_STR-TOLERANZUN sy-vline 
WA_QAMVRMS_STR-TOLUNNI sy-vline 
WA_QAMVRMS_STR-GRENZEOB1 sy-vline 
WA_QAMVRMS_STR-GRENZOB1NI sy-vline 
WA_QAMVRMS_STR-GRENZEUN1 sy-vline 
WA_QAMVRMS_STR-GRENZUN1NI sy-vline 
WA_QAMVRMS_STR-GRENZEOB2 sy-vline 
WA_QAMVRMS_STR-GRENZOB2NI sy-vline 
WA_QAMVRMS_STR-GRENZEUN2 sy-vline 
WA_QAMVRMS_STR-GRENZUN2NI sy-vline 
WA_QAMVRMS_STR-DUMMY10 sy-vline 
WA_QAMVRMS_STR-DUMMY20 sy-vline 
WA_QAMVRMS_STR-DUMMY40 sy-vline      INTO ld_text SEPARATED BY SPACE.

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