ABAP Select data from SAP table Q0648 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP Q0648 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 Q0648. 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 Q0648 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_Q0648 TYPE STANDARD TABLE OF Q0648,
      WA_Q0648 TYPE Q0648,
      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: <Q0648> TYPE Q0648.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_Q0648.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM Q0648
  INTO TABLE IT_Q0648.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM Q0648
*  INTO TABLE @DATA(IT_Q06482).
*--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_Q0648 INDEX 1 INTO DATA(WA_Q06482).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_Q0648 ASSIGNING <Q0648>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<Q0648>-TARTX = 1.
<Q0648>-TGBTX = 1.
<Q0648>-CURLEV = 1.
<Q0648>-MINLEV = 1.
<Q0648>-MAXLEV = 1.

ENDLOOP.

LOOP AT IT_Q0648 INTO WA_Q0648.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_Q0648-SUTXT, sy-vline,
  WA_Q0648-OTEXT, sy-vline,
  WA_Q0648-RTEXT, sy-vline,
  WA_Q0648-CURTYPE, sy-vline,
  WA_Q0648-CURAREA, sy-vline,
  WA_Q0648-CURGROUP, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_Q0648 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_Q0648 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_Q0648 INTO WA_Q0648.


*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.
ENDFORM. 

*&---------------------------------------------------------------------*
*& Form process_as_string_field_values
*&---------------------------------------------------------------------*
FORM process_as_string_field_values CHANGING p_EKKO LIKE wa_EKKO.

TYPES: BEGIN OF T_Q0648_STR, 
TARTX TYPE STRING,
TGBTX TYPE STRING,
CURLEV TYPE STRING,
MINLEV TYPE STRING,
MAXLEV TYPE STRING,
SUTXT TYPE STRING,
OTEXT TYPE STRING,
RTEXT TYPE STRING,
CURTYPE TYPE STRING,
CURAREA TYPE STRING,
CURGROUP TYPE STRING,
CUARTX TYPE STRING,
CUTYTX TYPE STRING,
NAME1 TYPE STRING,
NAME2 TYPE STRING,END OF T_EKKO_STR.
DATA: WA_Q0648_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_Q0648_STR-TARTX sy-vline 
WA_Q0648_STR-TGBTX sy-vline 
WA_Q0648_STR-CURLEV sy-vline 
WA_Q0648_STR-MINLEV sy-vline 
WA_Q0648_STR-MAXLEV sy-vline 
WA_Q0648_STR-SUTXT sy-vline 
WA_Q0648_STR-OTEXT sy-vline 
WA_Q0648_STR-RTEXT sy-vline 
WA_Q0648_STR-CURTYPE sy-vline 
WA_Q0648_STR-CURAREA sy-vline 
WA_Q0648_STR-CURGROUP sy-vline 
WA_Q0648_STR-CUARTX sy-vline 
WA_Q0648_STR-CUTYTX sy-vline 
WA_Q0648_STR-NAME1 sy-vline 
WA_Q0648_STR-NAME2 sy-vline      INTO ld_text SEPARATED BY SPACE.

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