ABAP Select data from SAP table IQNOTIFPAR into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM IQNOTIFPAR
*  INTO TABLE @DATA(IT_IQNOTIFPAR2).
*--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_IQNOTIFPAR INDEX 1 INTO DATA(WA_IQNOTIFPAR2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<IQNOTIFPAR>-MANDT = 1.
<IQNOTIFPAR>-NOTIFICATIONPARTNEROBJECT = 1.
<IQNOTIFPAR>-PARTNERFUNCTION = 1.
<IQNOTIFPAR>-NOTIFICATIONPARTNEROBJECTNMBR = 1.
<IQNOTIFPAR>-NOTIFICATIONOBJECTTYPE = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_IQNOTIFPAR-PARTNER, sy-vline,
  WA_IQNOTIFPAR-CREATEDBYUSER, sy-vline,
  WA_IQNOTIFPAR-CREATIONDATE, sy-vline,
  WA_IQNOTIFPAR-CREATIONTIME, sy-vline,
  WA_IQNOTIFPAR-LASTCHANGEDBYUSER, sy-vline,
  WA_IQNOTIFPAR-LASTCHANGETIME, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_IQNOTIFPAR 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_IQNOTIFPAR 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_IQNOTIFPAR INTO WA_IQNOTIFPAR.


*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 PARVW, internal->external for field PARTNERFUNCTION
CALL FUNCTION 'CONVERSION_EXIT_PARVW_OUTPUT'
  EXPORTING
    input =                      WA_IQNOTIFPAR-PARTNERFUNCTION
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IQNOTIFPAR-PARTNERFUNCTION.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field PARTNER
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_IQNOTIFPAR-PARTNER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IQNOTIFPAR-PARTNER.
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_IQNOTIFPAR_STR, 
MANDT TYPE STRING,
NOTIFICATIONPARTNEROBJECT TYPE STRING,
PARTNERFUNCTION TYPE STRING,
NOTIFICATIONPARTNEROBJECTNMBR TYPE STRING,
NOTIFICATIONOBJECTTYPE TYPE STRING,
PARTNER TYPE STRING,
CREATEDBYUSER TYPE STRING,
CREATIONDATE TYPE STRING,
CREATIONTIME TYPE STRING,
LASTCHANGEDBYUSER TYPE STRING,
LASTCHANGETIME TYPE STRING,
LASTCHANGEDATE TYPE STRING,
ISDELETED TYPE STRING,END OF T_EKKO_STR.
DATA: WA_IQNOTIFPAR_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_IQNOTIFPAR_STR-MANDT sy-vline 
WA_IQNOTIFPAR_STR-NOTIFICATIONPARTNEROBJECT sy-vline 
WA_IQNOTIFPAR_STR-PARTNERFUNCTION sy-vline 
WA_IQNOTIFPAR_STR-NOTIFICATIONPARTNEROBJECTNMBR sy-vline 
WA_IQNOTIFPAR_STR-NOTIFICATIONOBJECTTYPE sy-vline 
WA_IQNOTIFPAR_STR-PARTNER sy-vline 
WA_IQNOTIFPAR_STR-CREATEDBYUSER sy-vline 
WA_IQNOTIFPAR_STR-CREATIONDATE sy-vline 
WA_IQNOTIFPAR_STR-CREATIONTIME sy-vline 
WA_IQNOTIFPAR_STR-LASTCHANGEDBYUSER sy-vline 
WA_IQNOTIFPAR_STR-LASTCHANGETIME sy-vline 
WA_IQNOTIFPAR_STR-LASTCHANGEDATE sy-vline 
WA_IQNOTIFPAR_STR-ISDELETED sy-vline      INTO ld_text SEPARATED BY SPACE.

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