ABAP Select data from SAP table QDQLHIS into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM QDQLHIS
*  INTO TABLE @DATA(IT_QDQLHIS2).
*--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_QDQLHIS INDEX 1 INTO DATA(WA_QDQLHIS2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<QDQLHIS>-ERSTELLDAT = 1.
<QDQLHIS>-ERSTELZEIT = 1.
<QDQLHIS>-PRUEFLOS = 1.
<QDQLHIS>-ART = 1.
<QDQLHIS>-HERKUNFT = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_QDQLHIS-LOSMENGE, sy-vline,
  WA_QDQLHIS-MENGENEINH, sy-vline,
  WA_QDQLHIS-LMENGEIST, sy-vline,
  WA_QDQLHIS-GESSTICHPR, sy-vline,
  WA_QDQLHIS-EINHPROBE, sy-vline,
  WA_QDQLHIS-KZSKIPLOT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_QDQLHIS 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_QDQLHIS 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_QDQLHIS INTO WA_QDQLHIS.


*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_QDQLHIS-PRUEFLOS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_QDQLHIS-PRUEFLOS.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field MENGENEINH
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_QDQLHIS-MENGENEINH
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_QDQLHIS-MENGENEINH.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field EINHPROBE
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_QDQLHIS-EINHPROBE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_QDQLHIS-EINHPROBE.
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_QDQLHIS_STR, 
ERSTELLDAT TYPE STRING,
ERSTELZEIT TYPE STRING,
PRUEFLOS TYPE STRING,
ART TYPE STRING,
HERKUNFT TYPE STRING,
LOSMENGE TYPE STRING,
MENGENEINH TYPE STRING,
LMENGEIST TYPE STRING,
GESSTICHPR TYPE STRING,
EINHPROBE TYPE STRING,
KZSKIPLOT TYPE STRING,
DYN TYPE STRING,
KZDYNERF TYPE STRING,
DYNHEAD TYPE STRING,
PRSTUFE TYPE STRING,
PRSTUFTEXT TYPE STRING,
PRSCHAERFE TYPE STRING,
PRSCHTEXT TYPE STRING,
STAT35 TYPE STRING,
VBEWERTUNG TYPE STRING,
BEWERTUNG TYPE STRING,END OF T_EKKO_STR.
DATA: WA_QDQLHIS_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_QDQLHIS_STR-ERSTELLDAT sy-vline 
WA_QDQLHIS_STR-ERSTELZEIT sy-vline 
WA_QDQLHIS_STR-PRUEFLOS sy-vline 
WA_QDQLHIS_STR-ART sy-vline 
WA_QDQLHIS_STR-HERKUNFT sy-vline 
WA_QDQLHIS_STR-LOSMENGE sy-vline 
WA_QDQLHIS_STR-MENGENEINH sy-vline 
WA_QDQLHIS_STR-LMENGEIST sy-vline 
WA_QDQLHIS_STR-GESSTICHPR sy-vline 
WA_QDQLHIS_STR-EINHPROBE sy-vline 
WA_QDQLHIS_STR-KZSKIPLOT sy-vline 
WA_QDQLHIS_STR-DYN sy-vline 
WA_QDQLHIS_STR-KZDYNERF sy-vline 
WA_QDQLHIS_STR-DYNHEAD sy-vline 
WA_QDQLHIS_STR-PRSTUFE sy-vline 
WA_QDQLHIS_STR-PRSTUFTEXT sy-vline 
WA_QDQLHIS_STR-PRSCHAERFE sy-vline 
WA_QDQLHIS_STR-PRSCHTEXT sy-vline 
WA_QDQLHIS_STR-STAT35 sy-vline 
WA_QDQLHIS_STR-VBEWERTUNG sy-vline 
WA_QDQLHIS_STR-BEWERTUNG sy-vline      INTO ld_text SEPARATED BY SPACE.

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