ABAP Select data from SAP table QAVE into internal table

Get Example source ABAP code based on a different SAP table
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Below is a number of ABAP code snippets to demonstrate how to select data from SAP QAVE 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 QAVE. 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 QAVE 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_QAVE TYPE STANDARD TABLE OF QAVE,
      WA_QAVE TYPE QAVE,
      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: <QAVE> TYPE QAVE.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM QAVE
*  INTO TABLE @DATA(IT_QAVE2).
*--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_QAVE INDEX 1 INTO DATA(WA_QAVE2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<QAVE>-MANDANT = 1.
<QAVE>-PRUEFLOS = 1.
<QAVE>-KZART = 1.
<QAVE>-ZAEHLER = 1.
<QAVE>-VKATART = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_QAVE-VWERKS, sy-vline,
  WA_QAVE-VAUSWAHLMG, sy-vline,
  WA_QAVE-VCODEGRP, sy-vline,
  WA_QAVE-VCODE, sy-vline,
  WA_QAVE-VERSIONAM, sy-vline,
  WA_QAVE-VERSIONCD, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_QAVE 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_QAVE 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_QAVE INTO WA_QAVE.


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

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

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

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

*Conversion exit ALPHA, internal->external for field STAFO
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_QAVE-STAFO
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_QAVE-STAFO.
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_QAVE_STR, 
MANDANT TYPE STRING,
PRUEFLOS TYPE STRING,
KZART TYPE STRING,
ZAEHLER TYPE STRING,
VKATART TYPE STRING,
VWERKS TYPE STRING,
VAUSWAHLMG TYPE STRING,
VCODEGRP TYPE STRING,
VCODE TYPE STRING,
VERSIONAM TYPE STRING,
VERSIONCD TYPE STRING,
VBEWERTUNG TYPE STRING,
DBEWERTUNG TYPE STRING,
VFOLGEAKTI TYPE STRING,
QKENNZAHL TYPE STRING,
LTEXTKZ TYPE STRING,
VNAME TYPE STRING,
VDATUM TYPE STRING,
VEZEITERF TYPE STRING,
VAENAME TYPE STRING,
VAEDATUM TYPE STRING,
VEZEITAEN TYPE STRING,
STAFO TYPE STRING,
TEILLOS TYPE STRING,
VORGLFNR TYPE STRING,
QFOL_UP_EXE TYPE STRING,
DUMMY_QAVE_INCL_EEW_PS TYPE STRING,END OF T_EKKO_STR.
DATA: WA_QAVE_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_QAVE_STR-MANDANT sy-vline 
WA_QAVE_STR-PRUEFLOS sy-vline 
WA_QAVE_STR-KZART sy-vline 
WA_QAVE_STR-ZAEHLER sy-vline 
WA_QAVE_STR-VKATART sy-vline 
WA_QAVE_STR-VWERKS sy-vline 
WA_QAVE_STR-VAUSWAHLMG sy-vline 
WA_QAVE_STR-VCODEGRP sy-vline 
WA_QAVE_STR-VCODE sy-vline 
WA_QAVE_STR-VERSIONAM sy-vline 
WA_QAVE_STR-VERSIONCD sy-vline 
WA_QAVE_STR-VBEWERTUNG sy-vline 
WA_QAVE_STR-DBEWERTUNG sy-vline 
WA_QAVE_STR-VFOLGEAKTI sy-vline 
WA_QAVE_STR-QKENNZAHL sy-vline 
WA_QAVE_STR-LTEXTKZ sy-vline 
WA_QAVE_STR-VNAME sy-vline 
WA_QAVE_STR-VDATUM sy-vline 
WA_QAVE_STR-VEZEITERF sy-vline 
WA_QAVE_STR-VAENAME sy-vline 
WA_QAVE_STR-VAEDATUM sy-vline 
WA_QAVE_STR-VEZEITAEN sy-vline 
WA_QAVE_STR-STAFO sy-vline 
WA_QAVE_STR-TEILLOS sy-vline 
WA_QAVE_STR-VORGLFNR sy-vline 
WA_QAVE_STR-QFOL_UP_EXE sy-vline 
WA_QAVE_STR-DUMMY_QAVE_INCL_EEW_PS sy-vline      INTO ld_text SEPARATED BY SPACE.

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