ABAP Select data from SAP table QNQMINFO into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM QNQMINFO
*  INTO TABLE @DATA(IT_QNQMINFO2).
*--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_QNQMINFO INDEX 1 INTO DATA(WA_QNQMINFO2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<QNQMINFO>-QMNUM = 1.
<QNQMINFO>-QMART = 1.
<QNQMINFO>-QMTXT = 1.
<QNQMINFO>-ARTPR = 1.
<QNQMINFO>-PRIOK = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_QNQMINFO-QMDAT, sy-vline,
  WA_QNQMINFO-MATNR, sy-vline,
  WA_QNQMINFO-KUNUM, sy-vline,
  WA_QNQMINFO-LIFNUM, sy-vline,
  WA_QNQMINFO-PRUEFLOS, sy-vline,
  WA_QNQMINFO-STATUS_AB, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_QNQMINFO 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_QNQMINFO 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_QNQMINFO INTO WA_QNQMINFO.


*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_QNQMINFO-QMNUM
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_QNQMINFO-QMNUM.
WRITE:/ 'New Value:', ld_input.

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

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

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

*Conversion exit ALPHA, internal->external for field PRUEFLOS
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_QNQMINFO-PRUEFLOS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_QNQMINFO-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_QNQMINFO_STR, 
QMNUM TYPE STRING,
QMART TYPE STRING,
QMTXT TYPE STRING,
ARTPR TYPE STRING,
PRIOK TYPE STRING,
QMDAT TYPE STRING,
MATNR TYPE STRING,
KUNUM TYPE STRING,
LIFNUM TYPE STRING,
PRUEFLOS TYPE STRING,
STATUS_AB TYPE STRING,
MATERIAL TYPE STRING,
MAT_KUNDE TYPE STRING,
MAT_LIEFER TYPE STRING,
LIEFERANT TYPE STRING,
KUNDE TYPE STRING,
OBJNR TYPE STRING,END OF T_EKKO_STR.
DATA: WA_QNQMINFO_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_QNQMINFO_STR-QMNUM sy-vline 
WA_QNQMINFO_STR-QMART sy-vline 
WA_QNQMINFO_STR-QMTXT sy-vline 
WA_QNQMINFO_STR-ARTPR sy-vline 
WA_QNQMINFO_STR-PRIOK sy-vline 
WA_QNQMINFO_STR-QMDAT sy-vline 
WA_QNQMINFO_STR-MATNR sy-vline 
WA_QNQMINFO_STR-KUNUM sy-vline 
WA_QNQMINFO_STR-LIFNUM sy-vline 
WA_QNQMINFO_STR-PRUEFLOS sy-vline 
WA_QNQMINFO_STR-STATUS_AB sy-vline 
WA_QNQMINFO_STR-MATERIAL sy-vline 
WA_QNQMINFO_STR-MAT_KUNDE sy-vline 
WA_QNQMINFO_STR-MAT_LIEFER sy-vline 
WA_QNQMINFO_STR-LIEFERANT sy-vline 
WA_QNQMINFO_STR-KUNDE sy-vline 
WA_QNQMINFO_STR-OBJNR sy-vline      INTO ld_text SEPARATED BY SPACE.

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