ABAP Select data from SAP table QPMT into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM QPMT
*  INTO TABLE @DATA(IT_QPMT2).
*--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_QPMT INDEX 1 INTO DATA(WA_QPMT2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<QPMT>-MANDT = 1.
<QPMT>-ZAEHLER = 1.
<QPMT>-MKMNR = 1.
<QPMT>-VERSION = 1.
<QPMT>-SPRACHE = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_QPMT-GUELTIGAB, sy-vline,
  WA_QPMT-KURZTEXT, sy-vline,
  WA_QPMT-LTEXTKZ, sy-vline,
  WA_QPMT-LTEXTEKZ, sy-vline,
  WA_QPMT-GELOESCHT, sy-vline,
ENDLOOP.
   
*Add any further fields from structure WA_QPMT 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_QPMT 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_QPMT INTO WA_QPMT.


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

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

*Conversion exit ISOLA, internal->external for field SPRACHE
CALL FUNCTION 'CONVERSION_EXIT_ISOLA_OUTPUT'
  EXPORTING
    input =                      WA_QPMT-SPRACHE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_QPMT-SPRACHE.
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_QPMT_STR, 
MANDT TYPE STRING,
ZAEHLER TYPE STRING,
MKMNR TYPE STRING,
VERSION TYPE STRING,
SPRACHE TYPE STRING,
GUELTIGAB TYPE STRING,
KURZTEXT TYPE STRING,
LTEXTKZ TYPE STRING,
LTEXTEKZ TYPE STRING,
GELOESCHT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_QPMT_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_QPMT_STR-MANDT sy-vline 
WA_QPMT_STR-ZAEHLER sy-vline 
WA_QPMT_STR-MKMNR sy-vline 
WA_QPMT_STR-VERSION sy-vline 
WA_QPMT_STR-SPRACHE sy-vline 
WA_QPMT_STR-GUELTIGAB sy-vline 
WA_QPMT_STR-KURZTEXT sy-vline 
WA_QPMT_STR-LTEXTKZ sy-vline 
WA_QPMT_STR-LTEXTEKZ sy-vline 
WA_QPMT_STR-GELOESCHT sy-vline      INTO ld_text SEPARATED BY SPACE.

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