ABAP Select data from SAP table QPRS_SEL_Q into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM QPRS_SEL_Q
*  INTO TABLE @DATA(IT_QPRS_SEL_Q2).
*--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_QPRS_SEL_Q INDEX 1 INTO DATA(WA_QPRS_SEL_Q2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<QPRS_SEL_Q>-MANDT = 1.
<QPRS_SEL_Q>-PN_NR = 1.
<QPRS_SEL_Q>-QMNUM = 1.
<QPRS_SEL_Q>-PHYNR = 1.
<QPRS_SEL_Q>-PRART = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_QPRS_SEL_Q-PRTYP, sy-vline,
  WA_QPRS_SEL_Q-GBTYP, sy-vline,
  WA_QPRS_SEL_Q-MENGE, sy-vline,
  WA_QPRS_SEL_Q-MEINH, sy-vline,
  WA_QPRS_SEL_Q-MATNR, sy-vline,
  WA_QPRS_SEL_Q-WERKS, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_QPRS_SEL_Q 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_QPRS_SEL_Q 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_QPRS_SEL_Q INTO WA_QPRS_SEL_Q.


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

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

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

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

*Conversion exit NUMCV, internal->external for field REVLV
CALL FUNCTION 'CONVERSION_EXIT_NUMCV_OUTPUT'
  EXPORTING
    input =                      WA_QPRS_SEL_Q-REVLV
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_QPRS_SEL_Q-REVLV.
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_QPRS_SEL_Q_STR, 
MANDT TYPE STRING,
PN_NR TYPE STRING,
QMNUM TYPE STRING,
PHYNR TYPE STRING,
PRART TYPE STRING,
PRTYP TYPE STRING,
GBTYP TYPE STRING,
MENGE TYPE STRING,
MEINH TYPE STRING,
MATNR TYPE STRING,
WERKS TYPE STRING,
REVLV TYPE STRING,
CHARG TYPE STRING,
KTEXT TYPE STRING,
LGORT TYPE STRING,
ABORT TYPE STRING,
ABDAU TYPE STRING,
ABDAT TYPE STRING,
ABINF TYPE STRING,
PRIMPACK TYPE STRING,
STABICON TYPE STRING,
EINGDT TYPE STRING,
EINLDT TYPE STRING,
AUSLDT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_QPRS_SEL_Q_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_QPRS_SEL_Q_STR-MANDT sy-vline 
WA_QPRS_SEL_Q_STR-PN_NR sy-vline 
WA_QPRS_SEL_Q_STR-QMNUM sy-vline 
WA_QPRS_SEL_Q_STR-PHYNR sy-vline 
WA_QPRS_SEL_Q_STR-PRART sy-vline 
WA_QPRS_SEL_Q_STR-PRTYP sy-vline 
WA_QPRS_SEL_Q_STR-GBTYP sy-vline 
WA_QPRS_SEL_Q_STR-MENGE sy-vline 
WA_QPRS_SEL_Q_STR-MEINH sy-vline 
WA_QPRS_SEL_Q_STR-MATNR sy-vline 
WA_QPRS_SEL_Q_STR-WERKS sy-vline 
WA_QPRS_SEL_Q_STR-REVLV sy-vline 
WA_QPRS_SEL_Q_STR-CHARG sy-vline 
WA_QPRS_SEL_Q_STR-KTEXT sy-vline 
WA_QPRS_SEL_Q_STR-LGORT sy-vline 
WA_QPRS_SEL_Q_STR-ABORT sy-vline 
WA_QPRS_SEL_Q_STR-ABDAU sy-vline 
WA_QPRS_SEL_Q_STR-ABDAT sy-vline 
WA_QPRS_SEL_Q_STR-ABINF sy-vline 
WA_QPRS_SEL_Q_STR-PRIMPACK sy-vline 
WA_QPRS_SEL_Q_STR-STABICON sy-vline 
WA_QPRS_SEL_Q_STR-EINGDT sy-vline 
WA_QPRS_SEL_Q_STR-EINLDT sy-vline 
WA_QPRS_SEL_Q_STR-AUSLDT sy-vline      INTO ld_text SEPARATED BY SPACE.

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