ABAP Select data from SAP table RJKSDCQPQUAN_DB into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM RJKSDCQPQUAN_DB
*  INTO TABLE @DATA(IT_RJKSDCQPQUAN_DB2).
*--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_RJKSDCQPQUAN_DB INDEX 1 INTO DATA(WA_RJKSDCQPQUAN_DB2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<RJKSDCQPQUAN_DB>-MANDT = 1.
<RJKSDCQPQUAN_DB>-GUID = 1.
<RJKSDCQPQUAN_DB>-WEEKDAY = 1.
<RJKSDCQPQUAN_DB>-STATUS = 1.
<RJKSDCQPQUAN_DB>-DATE_TO = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_RJKSDCQPQUAN_DB-DATE_FROM, sy-vline,
  WA_RJKSDCQPQUAN_DB-XFIXCQP, sy-vline,
  WA_RJKSDCQPQUAN_DB-QUANTITY, sy-vline,
  WA_RJKSDCQPQUAN_DB-UNIT, sy-vline,
  WA_RJKSDCQPQUAN_DB-QUANTITY1, sy-vline,
  WA_RJKSDCQPQUAN_DB-QUANTITY2, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_RJKSDCQPQUAN_DB 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_RJKSDCQPQUAN_DB 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_RJKSDCQPQUAN_DB INTO WA_RJKSDCQPQUAN_DB.


*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 CUNIT, internal->external for field UNIT
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_RJKSDCQPQUAN_DB-UNIT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RJKSDCQPQUAN_DB-UNIT.
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_RJKSDCQPQUAN_DB_STR, 
MANDT TYPE STRING,
GUID TYPE STRING,
WEEKDAY TYPE STRING,
STATUS TYPE STRING,
DATE_TO TYPE STRING,
DATE_FROM TYPE STRING,
XFIXCQP TYPE STRING,
QUANTITY TYPE STRING,
UNIT TYPE STRING,
QUANTITY1 TYPE STRING,
QUANTITY2 TYPE STRING,
QUANTITY3 TYPE STRING,
QUANTITY4 TYPE STRING,
QUANTITY5 TYPE STRING,
QUANTITY6 TYPE STRING,
QUANTITY7 TYPE STRING,
QUANTITY8 TYPE STRING,
QUANTITY9 TYPE STRING,
REASON TYPE STRING,
COMMENTTEXT TYPE STRING,
ERFUSER TYPE STRING,
ERFDATE TYPE STRING,
ERFTIME TYPE STRING,
AENUSER TYPE STRING,
AENDATE TYPE STRING,
AENTIME TYPE STRING,
SUPPLYSTATUS TYPE STRING,
DBCODE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_RJKSDCQPQUAN_DB_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_RJKSDCQPQUAN_DB_STR-MANDT sy-vline 
WA_RJKSDCQPQUAN_DB_STR-GUID sy-vline 
WA_RJKSDCQPQUAN_DB_STR-WEEKDAY sy-vline 
WA_RJKSDCQPQUAN_DB_STR-STATUS sy-vline 
WA_RJKSDCQPQUAN_DB_STR-DATE_TO sy-vline 
WA_RJKSDCQPQUAN_DB_STR-DATE_FROM sy-vline 
WA_RJKSDCQPQUAN_DB_STR-XFIXCQP sy-vline 
WA_RJKSDCQPQUAN_DB_STR-QUANTITY sy-vline 
WA_RJKSDCQPQUAN_DB_STR-UNIT sy-vline 
WA_RJKSDCQPQUAN_DB_STR-QUANTITY1 sy-vline 
WA_RJKSDCQPQUAN_DB_STR-QUANTITY2 sy-vline 
WA_RJKSDCQPQUAN_DB_STR-QUANTITY3 sy-vline 
WA_RJKSDCQPQUAN_DB_STR-QUANTITY4 sy-vline 
WA_RJKSDCQPQUAN_DB_STR-QUANTITY5 sy-vline 
WA_RJKSDCQPQUAN_DB_STR-QUANTITY6 sy-vline 
WA_RJKSDCQPQUAN_DB_STR-QUANTITY7 sy-vline 
WA_RJKSDCQPQUAN_DB_STR-QUANTITY8 sy-vline 
WA_RJKSDCQPQUAN_DB_STR-QUANTITY9 sy-vline 
WA_RJKSDCQPQUAN_DB_STR-REASON sy-vline 
WA_RJKSDCQPQUAN_DB_STR-COMMENTTEXT sy-vline 
WA_RJKSDCQPQUAN_DB_STR-ERFUSER sy-vline 
WA_RJKSDCQPQUAN_DB_STR-ERFDATE sy-vline 
WA_RJKSDCQPQUAN_DB_STR-ERFTIME sy-vline 
WA_RJKSDCQPQUAN_DB_STR-AENUSER sy-vline 
WA_RJKSDCQPQUAN_DB_STR-AENDATE sy-vline 
WA_RJKSDCQPQUAN_DB_STR-AENTIME sy-vline 
WA_RJKSDCQPQUAN_DB_STR-SUPPLYSTATUS sy-vline 
WA_RJKSDCQPQUAN_DB_STR-DBCODE sy-vline      INTO ld_text SEPARATED BY SPACE.

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