ABAP Select data from SAP table QAMIS_NOTIF_VIQMEL into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM QAMIS_NOTIF_VIQMEL
*  INTO TABLE @DATA(IT_QAMIS_NOTIF_VIQMEL2).
*--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_QAMIS_NOTIF_VIQMEL INDEX 1 INTO DATA(WA_QAMIS_NOTIF_VIQMEL2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<QAMIS_NOTIF_VIQMEL>-QMNUM = 1.
<QAMIS_NOTIF_VIQMEL>-EQUNR = 1.
<QAMIS_NOTIF_VIQMEL>-QMART = 1.
<QAMIS_NOTIF_VIQMEL>-QMTXT = 1.
<QAMIS_NOTIF_VIQMEL>-MATNR = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_QAMIS_NOTIF_VIQMEL-QMDAT, sy-vline,
  WA_QAMIS_NOTIF_VIQMEL-STRMN, sy-vline,
  WA_QAMIS_NOTIF_VIQMEL-LTRMN, sy-vline,
  WA_QAMIS_NOTIF_VIQMEL-QMNAM, sy-vline,
  WA_QAMIS_NOTIF_VIQMEL-KUNUM, sy-vline,
  WA_QAMIS_NOTIF_VIQMEL-RKMNG, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_QAMIS_NOTIF_VIQMEL 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_QAMIS_NOTIF_VIQMEL 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_QAMIS_NOTIF_VIQMEL INTO WA_QAMIS_NOTIF_VIQMEL.


*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 MATNR
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_QAMIS_NOTIF_VIQMEL-MATNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_QAMIS_NOTIF_VIQMEL-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_QAMIS_NOTIF_VIQMEL_STR, 
QMNUM TYPE STRING,
EQUNR TYPE STRING,
QMART TYPE STRING,
QMTXT TYPE STRING,
MATNR TYPE STRING,
QMDAT TYPE STRING,
STRMN TYPE STRING,
LTRMN TYPE STRING,
QMNAM TYPE STRING,
KUNUM TYPE STRING,
RKMNG TYPE STRING,
MGEIN TYPE STRING,
MAWERK TYPE STRING,
LIFNUM TYPE STRING,
INDTX TYPE STRING,
QMKAT TYPE STRING,
QMGRP TYPE STRING,
QMCOD TYPE STRING,
FERTAUFNR TYPE STRING,
SERIALNR TYPE STRING,
CHARG TYPE STRING,
EBELN TYPE STRING,
EBELP TYPE STRING,
ARTPR TYPE STRING,
PRIOK TYPE STRING,
TPLNR TYPE STRING,
PSP_NR TYPE STRING,END OF T_EKKO_STR.
DATA: WA_QAMIS_NOTIF_VIQMEL_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_QAMIS_NOTIF_VIQMEL_STR-QMNUM sy-vline 
WA_QAMIS_NOTIF_VIQMEL_STR-EQUNR sy-vline 
WA_QAMIS_NOTIF_VIQMEL_STR-QMART sy-vline 
WA_QAMIS_NOTIF_VIQMEL_STR-QMTXT sy-vline 
WA_QAMIS_NOTIF_VIQMEL_STR-MATNR sy-vline 
WA_QAMIS_NOTIF_VIQMEL_STR-QMDAT sy-vline 
WA_QAMIS_NOTIF_VIQMEL_STR-STRMN sy-vline 
WA_QAMIS_NOTIF_VIQMEL_STR-LTRMN sy-vline 
WA_QAMIS_NOTIF_VIQMEL_STR-QMNAM sy-vline 
WA_QAMIS_NOTIF_VIQMEL_STR-KUNUM sy-vline 
WA_QAMIS_NOTIF_VIQMEL_STR-RKMNG sy-vline 
WA_QAMIS_NOTIF_VIQMEL_STR-MGEIN sy-vline 
WA_QAMIS_NOTIF_VIQMEL_STR-MAWERK sy-vline 
WA_QAMIS_NOTIF_VIQMEL_STR-LIFNUM sy-vline 
WA_QAMIS_NOTIF_VIQMEL_STR-INDTX sy-vline 
WA_QAMIS_NOTIF_VIQMEL_STR-QMKAT sy-vline 
WA_QAMIS_NOTIF_VIQMEL_STR-QMGRP sy-vline 
WA_QAMIS_NOTIF_VIQMEL_STR-QMCOD sy-vline 
WA_QAMIS_NOTIF_VIQMEL_STR-FERTAUFNR sy-vline 
WA_QAMIS_NOTIF_VIQMEL_STR-SERIALNR sy-vline 
WA_QAMIS_NOTIF_VIQMEL_STR-CHARG sy-vline 
WA_QAMIS_NOTIF_VIQMEL_STR-EBELN sy-vline 
WA_QAMIS_NOTIF_VIQMEL_STR-EBELP sy-vline 
WA_QAMIS_NOTIF_VIQMEL_STR-ARTPR sy-vline 
WA_QAMIS_NOTIF_VIQMEL_STR-PRIOK sy-vline 
WA_QAMIS_NOTIF_VIQMEL_STR-TPLNR sy-vline 
WA_QAMIS_NOTIF_VIQMEL_STR-PSP_NR sy-vline      INTO ld_text SEPARATED BY SPACE.

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