ABAP Select data from SAP table QSTA004 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP QSTA004 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 QSTA004. 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 QSTA004 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_QSTA004 TYPE STANDARD TABLE OF QSTA004,
      WA_QSTA004 TYPE QSTA004,
      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: <QSTA004> TYPE QSTA004.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_QSTA004.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM QSTA004
  INTO TABLE IT_QSTA004.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM QSTA004
*  INTO TABLE @DATA(IT_QSTA0042).
*--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_QSTA004 INDEX 1 INTO DATA(WA_QSTA0042).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_QSTA004 ASSIGNING <QSTA004>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<QSTA004>-PLNNR = 1.
<QSTA004>-PLNAL = 1.
<QSTA004>-DATUV = 1.
<QSTA004>-VORNR = 1.
<QSTA004>-KTEXT = 1.

ENDLOOP.

LOOP AT IT_QSTA004 INTO WA_QSTA004.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_QSTA004-ARBPL, sy-vline,
  WA_QSTA004-LTXA1, sy-vline,
  WA_QSTA004-PAKET1, sy-vline,
  WA_QSTA004-PAKET2, sy-vline,
  WA_QSTA004-PAKET3, sy-vline,
  WA_QSTA004-PAKET4, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_QSTA004 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_QSTA004 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_QSTA004 INTO WA_QSTA004.


*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 PLNNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_QSTA004-PLNNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_QSTA004-PLNNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field PLNAL
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_QSTA004-PLNAL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_QSTA004-PLNAL.
WRITE:/ 'New Value:', ld_input.

*Conversion exit NUMCV, internal->external for field VORNR
CALL FUNCTION 'CONVERSION_EXIT_NUMCV_OUTPUT'
  EXPORTING
    input =                      WA_QSTA004-VORNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_QSTA004-VORNR.
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_QSTA004_STR, 
PLNNR TYPE STRING,
PLNAL TYPE STRING,
DATUV TYPE STRING,
VORNR TYPE STRING,
KTEXT TYPE STRING,
ARBPL TYPE STRING,
LTXA1 TYPE STRING,
PAKET1 TYPE STRING,
PAKET2 TYPE STRING,
PAKET3 TYPE STRING,
PAKET4 TYPE STRING,
PAKET5 TYPE STRING,
PAKET6 TYPE STRING,
PAKET7 TYPE STRING,
PAKET8 TYPE STRING,
PAKET9 TYPE STRING,
PAKET10 TYPE STRING,
PAKET11 TYPE STRING,
PAKET12 TYPE STRING,
PAKET13 TYPE STRING,
PAKET14 TYPE STRING,
PAKET15 TYPE STRING,
WPAKETE TYPE STRING,
ARBID TYPE STRING,
LOEKZ TYPE STRING,
SELECTED TYPE STRING,END OF T_EKKO_STR.
DATA: WA_QSTA004_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_QSTA004_STR-PLNNR sy-vline 
WA_QSTA004_STR-PLNAL sy-vline 
WA_QSTA004_STR-DATUV sy-vline 
WA_QSTA004_STR-VORNR sy-vline 
WA_QSTA004_STR-KTEXT sy-vline 
WA_QSTA004_STR-ARBPL sy-vline 
WA_QSTA004_STR-LTXA1 sy-vline 
WA_QSTA004_STR-PAKET1 sy-vline 
WA_QSTA004_STR-PAKET2 sy-vline 
WA_QSTA004_STR-PAKET3 sy-vline 
WA_QSTA004_STR-PAKET4 sy-vline 
WA_QSTA004_STR-PAKET5 sy-vline 
WA_QSTA004_STR-PAKET6 sy-vline 
WA_QSTA004_STR-PAKET7 sy-vline 
WA_QSTA004_STR-PAKET8 sy-vline 
WA_QSTA004_STR-PAKET9 sy-vline 
WA_QSTA004_STR-PAKET10 sy-vline 
WA_QSTA004_STR-PAKET11 sy-vline 
WA_QSTA004_STR-PAKET12 sy-vline 
WA_QSTA004_STR-PAKET13 sy-vline 
WA_QSTA004_STR-PAKET14 sy-vline 
WA_QSTA004_STR-PAKET15 sy-vline 
WA_QSTA004_STR-WPAKETE sy-vline 
WA_QSTA004_STR-ARBID sy-vline 
WA_QSTA004_STR-LOEKZ sy-vline 
WA_QSTA004_STR-SELECTED sy-vline      INTO ld_text SEPARATED BY SPACE.

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