ABAP Select data from SAP table QSTLOT 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 QSTLOT 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 QSTLOT. 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 QSTLOT 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_QSTLOT TYPE STANDARD TABLE OF QSTLOT,
      WA_QSTLOT TYPE QSTLOT,
      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: <QSTLOT> TYPE QSTLOT.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM QSTLOT
*  INTO TABLE @DATA(IT_QSTLOT2).
*--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_QSTLOT INDEX 1 INTO DATA(WA_QSTLOT2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<QSTLOT>-PHYNR = 1.
<QSTLOT>-PRTYP = 1.
<QSTLOT>-STABICON = 1.
<QSTLOT>-STABICONTXT = 1.
<QSTLOT>-WAPOS = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_QSTLOT-ABNUM, sy-vline,
  WA_QSTLOT-ZAEHL, sy-vline,
  WA_QSTLOT-KTEX1, sy-vline,
  WA_QSTLOT-KZYK1, sy-vline,
  WA_QSTLOT-PRUEFLOS, sy-vline,
  WA_QSTLOT-PASTRTERM, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_QSTLOT 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_QSTLOT 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_QSTLOT INTO WA_QSTLOT.


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

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

*Conversion exit ALPHA, internal->external for field PRUEFLOS
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_QSTLOT-PRUEFLOS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_QSTLOT-PRUEFLOS.
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_QSTLOT_STR, 
PHYNR TYPE STRING,
PRTYP TYPE STRING,
STABICON TYPE STRING,
STABICONTXT TYPE STRING,
WAPOS TYPE STRING,
ABNUM TYPE STRING,
ZAEHL TYPE STRING,
KTEX1 TYPE STRING,
KZYK1 TYPE STRING,
PRUEFLOS TYPE STRING,
PASTRTERM TYPE STRING,
STAT32 TYPE STRING,END OF T_EKKO_STR.
DATA: WA_QSTLOT_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_QSTLOT_STR-PHYNR sy-vline 
WA_QSTLOT_STR-PRTYP sy-vline 
WA_QSTLOT_STR-STABICON sy-vline 
WA_QSTLOT_STR-STABICONTXT sy-vline 
WA_QSTLOT_STR-WAPOS sy-vline 
WA_QSTLOT_STR-ABNUM sy-vline 
WA_QSTLOT_STR-ZAEHL sy-vline 
WA_QSTLOT_STR-KTEX1 sy-vline 
WA_QSTLOT_STR-KZYK1 sy-vline 
WA_QSTLOT_STR-PRUEFLOS sy-vline 
WA_QSTLOT_STR-PASTRTERM sy-vline 
WA_QSTLOT_STR-STAT32 sy-vline      INTO ld_text SEPARATED BY SPACE.

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