ABAP Select data from SAP table QAMAS_NOTIF_VIQMSM into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM QAMAS_NOTIF_VIQMSM
*  INTO TABLE @DATA(IT_QAMAS_NOTIF_VIQMSM2).
*--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_QAMAS_NOTIF_VIQMSM INDEX 1 INTO DATA(WA_QAMAS_NOTIF_VIQMSM2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<QAMAS_NOTIF_VIQMSM>-MANDT = 1.
<QAMAS_NOTIF_VIQMSM>-QMNUM = 1.
<QAMAS_NOTIF_VIQMSM>-MANUM = 1.
<QAMAS_NOTIF_VIQMSM>-MNKAT = 1.
<QAMAS_NOTIF_VIQMSM>-MNGRP = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_QAMAS_NOTIF_VIQMSM-MNCOD, sy-vline,
  WA_QAMAS_NOTIF_VIQMSM-MNVER, sy-vline,
  WA_QAMAS_NOTIF_VIQMSM-FOLGEACT, sy-vline,
  WA_QAMAS_NOTIF_VIQMSM-FOLACTPROT, sy-vline,
  WA_QAMAS_NOTIF_VIQMSM-MATXT, sy-vline,
  WA_QAMAS_NOTIF_VIQMSM-PSTER, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_QAMAS_NOTIF_VIQMSM 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_QAMAS_NOTIF_VIQMSM 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_QAMAS_NOTIF_VIQMSM INTO WA_QAMAS_NOTIF_VIQMSM.


*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_QAMAS_NOTIF_VIQMSM_STR, 
MANDT TYPE STRING,
QMNUM TYPE STRING,
MANUM TYPE STRING,
MNKAT TYPE STRING,
MNGRP TYPE STRING,
MNCOD TYPE STRING,
MNVER TYPE STRING,
FOLGEACT TYPE STRING,
FOLACTPROT TYPE STRING,
MATXT TYPE STRING,
PSTER TYPE STRING,
PETER TYPE STRING,
OBJNR TYPE STRING,
INDTX TYPE STRING,
KZMLA TYPE STRING,
FENUM TYPE STRING,
URNUM TYPE STRING,
PARVW TYPE STRING,
PARNR TYPE STRING,
MMENGE TYPE STRING,
MMGEIN TYPE STRING,
QSMNUM TYPE STRING,END OF T_EKKO_STR.
DATA: WA_QAMAS_NOTIF_VIQMSM_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_QAMAS_NOTIF_VIQMSM_STR-MANDT sy-vline 
WA_QAMAS_NOTIF_VIQMSM_STR-QMNUM sy-vline 
WA_QAMAS_NOTIF_VIQMSM_STR-MANUM sy-vline 
WA_QAMAS_NOTIF_VIQMSM_STR-MNKAT sy-vline 
WA_QAMAS_NOTIF_VIQMSM_STR-MNGRP sy-vline 
WA_QAMAS_NOTIF_VIQMSM_STR-MNCOD sy-vline 
WA_QAMAS_NOTIF_VIQMSM_STR-MNVER sy-vline 
WA_QAMAS_NOTIF_VIQMSM_STR-FOLGEACT sy-vline 
WA_QAMAS_NOTIF_VIQMSM_STR-FOLACTPROT sy-vline 
WA_QAMAS_NOTIF_VIQMSM_STR-MATXT sy-vline 
WA_QAMAS_NOTIF_VIQMSM_STR-PSTER sy-vline 
WA_QAMAS_NOTIF_VIQMSM_STR-PETER sy-vline 
WA_QAMAS_NOTIF_VIQMSM_STR-OBJNR sy-vline 
WA_QAMAS_NOTIF_VIQMSM_STR-INDTX sy-vline 
WA_QAMAS_NOTIF_VIQMSM_STR-KZMLA sy-vline 
WA_QAMAS_NOTIF_VIQMSM_STR-FENUM sy-vline 
WA_QAMAS_NOTIF_VIQMSM_STR-URNUM sy-vline 
WA_QAMAS_NOTIF_VIQMSM_STR-PARVW sy-vline 
WA_QAMAS_NOTIF_VIQMSM_STR-PARNR sy-vline 
WA_QAMAS_NOTIF_VIQMSM_STR-MMENGE sy-vline 
WA_QAMAS_NOTIF_VIQMSM_STR-MMGEIN sy-vline 
WA_QAMAS_NOTIF_VIQMSM_STR-QSMNUM sy-vline      INTO ld_text SEPARATED BY SPACE.

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