ABAP Select data from SAP table QGEVAL_NOTIFICATION into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM QGEVAL_NOTIFICATION
*  INTO TABLE @DATA(IT_QGEVAL_NOTIFICATION2).
*--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_QGEVAL_NOTIFICATION INDEX 1 INTO DATA(WA_QGEVAL_NOTIFICATION2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<QGEVAL_NOTIFICATION>-QMNUM = 1.
<QGEVAL_NOTIFICATION>-MGEIN = 1.
<QGEVAL_NOTIFICATION>-BZMNG = 1.
<QGEVAL_NOTIFICATION>-RKMNG = 1.
<QGEVAL_NOTIFICATION>-LS_KDAUF = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_QGEVAL_NOTIFICATION-LS_KDPOS, sy-vline,
  WA_QGEVAL_NOTIFICATION-LS_VBELN, sy-vline,
  WA_QGEVAL_NOTIFICATION-LS_POSNR, sy-vline,
  WA_QGEVAL_NOTIFICATION-FERTAUFNR, sy-vline,
  WA_QGEVAL_NOTIFICATION-EBELP, sy-vline,
  WA_QGEVAL_NOTIFICATION-WERK, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_QGEVAL_NOTIFICATION 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_QGEVAL_NOTIFICATION 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_QGEVAL_NOTIFICATION INTO WA_QGEVAL_NOTIFICATION.


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

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

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

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

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

*Conversion exit MATN1, internal->external for field MATNR
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_QGEVAL_NOTIFICATION-MATNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_QGEVAL_NOTIFICATION-MATNR.
WRITE:/ 'New Value:', ld_input.

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

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

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

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

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

*Conversion exit ALPHA, internal->external for field KUNUM
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_QGEVAL_NOTIFICATION-KUNUM
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_QGEVAL_NOTIFICATION-KUNUM.
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_QGEVAL_NOTIFICATION_STR, 
QMNUM TYPE STRING,
MGEIN TYPE STRING,
BZMNG TYPE STRING,
RKMNG TYPE STRING,
LS_KDAUF TYPE STRING,
LS_KDPOS TYPE STRING,
LS_VBELN TYPE STRING,
LS_POSNR TYPE STRING,
FERTAUFNR TYPE STRING,
EBELP TYPE STRING,
WERK TYPE STRING,
MATNR TYPE STRING,
CHARG TYPE STRING,
AUFNR TYPE STRING,
EBELN TYPE STRING,
SA_AUFNR TYPE STRING,
HERSTELLER TYPE STRING,
MERKNR TYPE STRING,
QTXT TYPE STRING,
QMART TYPE STRING,
ARTPR TYPE STRING,
PRIOK TYPE STRING,
ERDAT TYPE STRING,
LIFNUM TYPE STRING,
KUNUM TYPE STRING,
MAWERK TYPE STRING,
BATCH_HIERARCHY TYPE STRING,END OF T_EKKO_STR.
DATA: WA_QGEVAL_NOTIFICATION_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_QGEVAL_NOTIFICATION_STR-QMNUM sy-vline 
WA_QGEVAL_NOTIFICATION_STR-MGEIN sy-vline 
WA_QGEVAL_NOTIFICATION_STR-BZMNG sy-vline 
WA_QGEVAL_NOTIFICATION_STR-RKMNG sy-vline 
WA_QGEVAL_NOTIFICATION_STR-LS_KDAUF sy-vline 
WA_QGEVAL_NOTIFICATION_STR-LS_KDPOS sy-vline 
WA_QGEVAL_NOTIFICATION_STR-LS_VBELN sy-vline 
WA_QGEVAL_NOTIFICATION_STR-LS_POSNR sy-vline 
WA_QGEVAL_NOTIFICATION_STR-FERTAUFNR sy-vline 
WA_QGEVAL_NOTIFICATION_STR-EBELP sy-vline 
WA_QGEVAL_NOTIFICATION_STR-WERK sy-vline 
WA_QGEVAL_NOTIFICATION_STR-MATNR sy-vline 
WA_QGEVAL_NOTIFICATION_STR-CHARG sy-vline 
WA_QGEVAL_NOTIFICATION_STR-AUFNR sy-vline 
WA_QGEVAL_NOTIFICATION_STR-EBELN sy-vline 
WA_QGEVAL_NOTIFICATION_STR-SA_AUFNR sy-vline 
WA_QGEVAL_NOTIFICATION_STR-HERSTELLER sy-vline 
WA_QGEVAL_NOTIFICATION_STR-MERKNR sy-vline 
WA_QGEVAL_NOTIFICATION_STR-QTXT sy-vline 
WA_QGEVAL_NOTIFICATION_STR-QMART sy-vline 
WA_QGEVAL_NOTIFICATION_STR-ARTPR sy-vline 
WA_QGEVAL_NOTIFICATION_STR-PRIOK sy-vline 
WA_QGEVAL_NOTIFICATION_STR-ERDAT sy-vline 
WA_QGEVAL_NOTIFICATION_STR-LIFNUM sy-vline 
WA_QGEVAL_NOTIFICATION_STR-KUNUM sy-vline 
WA_QGEVAL_NOTIFICATION_STR-MAWERK sy-vline 
WA_QGEVAL_NOTIFICATION_STR-BATCH_HIERARCHY sy-vline      INTO ld_text SEPARATED BY SPACE.

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