ABAP Select data from SAP table TJKSDRETQUANDESC into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM TJKSDRETQUANDESC
*  INTO TABLE @DATA(IT_TJKSDRETQUANDESC2).
*--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_TJKSDRETQUANDESC INDEX 1 INTO DATA(WA_TJKSDRETQUANDESC2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<TJKSDRETQUANDESC>-MANDT = 1.
<TJKSDRETQUANDESC>-SPRAS = 1.
<TJKSDRETQUANDESC>-QUANTITY1 = 1.
<TJKSDRETQUANDESC>-QUANTITY2 = 1.
<TJKSDRETQUANDESC>-QUANTITY3 = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_TJKSDRETQUANDESC-QUANTITY4, sy-vline,
  WA_TJKSDRETQUANDESC-QUANTITY5, sy-vline,
  WA_TJKSDRETQUANDESC-QUANTITY6, sy-vline,
  WA_TJKSDRETQUANDESC-QUANTITY7, sy-vline,
  WA_TJKSDRETQUANDESC-QUANTITY8, sy-vline,
  WA_TJKSDRETQUANDESC-QUANTITY9, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_TJKSDRETQUANDESC 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_TJKSDRETQUANDESC 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_TJKSDRETQUANDESC INTO WA_TJKSDRETQUANDESC.


*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 ISOLA, internal->external for field SPRAS
CALL FUNCTION 'CONVERSION_EXIT_ISOLA_OUTPUT'
  EXPORTING
    input =                      WA_TJKSDRETQUANDESC-SPRAS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_TJKSDRETQUANDESC-SPRAS.
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_TJKSDRETQUANDESC_STR, 
MANDT TYPE STRING,
SPRAS 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,
QUANTITY10 TYPE STRING,
CREDIT1 TYPE STRING,
CREDIT2 TYPE STRING,
CREDIT3 TYPE STRING,
CREDIT4 TYPE STRING,
CREDIT5 TYPE STRING,END OF T_EKKO_STR.
DATA: WA_TJKSDRETQUANDESC_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_TJKSDRETQUANDESC_STR-MANDT sy-vline 
WA_TJKSDRETQUANDESC_STR-SPRAS sy-vline 
WA_TJKSDRETQUANDESC_STR-QUANTITY1 sy-vline 
WA_TJKSDRETQUANDESC_STR-QUANTITY2 sy-vline 
WA_TJKSDRETQUANDESC_STR-QUANTITY3 sy-vline 
WA_TJKSDRETQUANDESC_STR-QUANTITY4 sy-vline 
WA_TJKSDRETQUANDESC_STR-QUANTITY5 sy-vline 
WA_TJKSDRETQUANDESC_STR-QUANTITY6 sy-vline 
WA_TJKSDRETQUANDESC_STR-QUANTITY7 sy-vline 
WA_TJKSDRETQUANDESC_STR-QUANTITY8 sy-vline 
WA_TJKSDRETQUANDESC_STR-QUANTITY9 sy-vline 
WA_TJKSDRETQUANDESC_STR-QUANTITY10 sy-vline 
WA_TJKSDRETQUANDESC_STR-CREDIT1 sy-vline 
WA_TJKSDRETQUANDESC_STR-CREDIT2 sy-vline 
WA_TJKSDRETQUANDESC_STR-CREDIT3 sy-vline 
WA_TJKSDRETQUANDESC_STR-CREDIT4 sy-vline 
WA_TJKSDRETQUANDESC_STR-CREDIT5 sy-vline      INTO ld_text SEPARATED BY SPACE.

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