ABAP Select data from SAP table QST010100 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP QST010100 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 QST010100. 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 QST010100 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_QST010100 TYPE STANDARD TABLE OF QST010100,
      WA_QST010100 TYPE QST010100,
      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: <QST010100> TYPE QST010100.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_QST010100.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM QST010100
  INTO TABLE IT_QST010100.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM QST010100
*  INTO TABLE @DATA(IT_QST0101002).
*--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_QST010100 INDEX 1 INTO DATA(WA_QST0101002).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_QST010100 ASSIGNING <QST010100>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<QST010100>-SELECTED = 1.
<QST010100>-MATNR = 1.
<QST010100>-MAKTX = 1.
<QST010100>-WERKS = 1.
<QST010100>-WERKSNAME = 1.

ENDLOOP.

LOOP AT IT_QST010100 INTO WA_QST010100.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_QST010100-CHARG, sy-vline,
  WA_QST010100-QMNUM, sy-vline,
  WA_QST010100-PRART, sy-vline,
  WA_QST010100-PRARTKTXT, sy-vline,
  WA_QST010100-PRTYP, sy-vline,
  WA_QST010100-PRTYPTXT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_QST010100 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_QST010100 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_QST010100 INTO WA_QST010100.


*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 MATN1, internal->external for field MATNR
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_QST010100-MATNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_QST010100-MATNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field QMNUM
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_QST010100-QMNUM
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_QST010100-QMNUM.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field MEINH
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_QST010100-MEINH
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_QST010100-MEINH.
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_QST010100_STR, 
SELECTED TYPE STRING,
MATNR TYPE STRING,
MAKTX TYPE STRING,
WERKS TYPE STRING,
WERKSNAME TYPE STRING,
CHARG TYPE STRING,
QMNUM TYPE STRING,
PRART TYPE STRING,
PRARTKTXT TYPE STRING,
PRTYP TYPE STRING,
PRTYPTXT TYPE STRING,
PRIMPACK TYPE STRING,
PRIMPACKTXT TYPE STRING,
GBTYP TYPE STRING,
GBTYPTXT TYPE STRING,
MENGE TYPE STRING,
MEINH TYPE STRING,
STABICON TYPE STRING,
STABICONTXT TYPE STRING,
ABORT TYPE STRING,
KURZTXTAO TYPE STRING,
KTEXT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_QST010100_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_QST010100_STR-SELECTED sy-vline 
WA_QST010100_STR-MATNR sy-vline 
WA_QST010100_STR-MAKTX sy-vline 
WA_QST010100_STR-WERKS sy-vline 
WA_QST010100_STR-WERKSNAME sy-vline 
WA_QST010100_STR-CHARG sy-vline 
WA_QST010100_STR-QMNUM sy-vline 
WA_QST010100_STR-PRART sy-vline 
WA_QST010100_STR-PRARTKTXT sy-vline 
WA_QST010100_STR-PRTYP sy-vline 
WA_QST010100_STR-PRTYPTXT sy-vline 
WA_QST010100_STR-PRIMPACK sy-vline 
WA_QST010100_STR-PRIMPACKTXT sy-vline 
WA_QST010100_STR-GBTYP sy-vline 
WA_QST010100_STR-GBTYPTXT sy-vline 
WA_QST010100_STR-MENGE sy-vline 
WA_QST010100_STR-MEINH sy-vline 
WA_QST010100_STR-STABICON sy-vline 
WA_QST010100_STR-STABICONTXT sy-vline 
WA_QST010100_STR-ABORT sy-vline 
WA_QST010100_STR-KURZTXTAO sy-vline 
WA_QST010100_STR-KTEXT sy-vline      INTO ld_text SEPARATED BY SPACE.

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