ABAP Select data from SAP table QTPERMIT into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM QTPERMIT
*  INTO TABLE @DATA(IT_QTPERMIT2).
*--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_QTPERMIT INDEX 1 INTO DATA(WA_QTPERMIT2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<QTPERMIT>-KOSCH = 1.
<QTPERMIT>-KONZA = 1.
<QTPERMIT>-LFDNR = 1.
<QTPERMIT>-DAT00 = 1.
<QTPERMIT>-SEPARATOR1 = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_QTPERMIT-DAT01, sy-vline,
  WA_QTPERMIT-SEPARATOR2, sy-vline,
  WA_QTPERMIT-MNG01, sy-vline,
  WA_QTPERMIT-SEPARATOR3, sy-vline,
  WA_QTPERMIT-DAT02, sy-vline,
  WA_QTPERMIT-SEPARATOR4, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_QTPERMIT 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_QTPERMIT 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_QTPERMIT INTO WA_QTPERMIT.


*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 CUNIT, internal->external for field BASME
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_QTPERMIT-BASME
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_QTPERMIT-BASME.
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_QTPERMIT_STR, 
KOSCH TYPE STRING,
KONZA TYPE STRING,
LFDNR TYPE STRING,
DAT00 TYPE STRING,
SEPARATOR1 TYPE STRING,
DAT01 TYPE STRING,
SEPARATOR2 TYPE STRING,
MNG01 TYPE STRING,
SEPARATOR3 TYPE STRING,
DAT02 TYPE STRING,
SEPARATOR4 TYPE STRING,
MNG03 TYPE STRING,
BASME TYPE STRING,END OF T_EKKO_STR.
DATA: WA_QTPERMIT_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_QTPERMIT_STR-KOSCH sy-vline 
WA_QTPERMIT_STR-KONZA sy-vline 
WA_QTPERMIT_STR-LFDNR sy-vline 
WA_QTPERMIT_STR-DAT00 sy-vline 
WA_QTPERMIT_STR-SEPARATOR1 sy-vline 
WA_QTPERMIT_STR-DAT01 sy-vline 
WA_QTPERMIT_STR-SEPARATOR2 sy-vline 
WA_QTPERMIT_STR-MNG01 sy-vline 
WA_QTPERMIT_STR-SEPARATOR3 sy-vline 
WA_QTPERMIT_STR-DAT02 sy-vline 
WA_QTPERMIT_STR-SEPARATOR4 sy-vline 
WA_QTPERMIT_STR-MNG03 sy-vline 
WA_QTPERMIT_STR-BASME sy-vline      INTO ld_text SEPARATED BY SPACE.

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