ABAP Select data from SAP table RJKSDISSUEDATE_ALV into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM RJKSDISSUEDATE_ALV
*  INTO TABLE @DATA(IT_RJKSDISSUEDATE_ALV2).
*--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_RJKSDISSUEDATE_ALV INDEX 1 INTO DATA(WA_RJKSDISSUEDATE_ALV2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<RJKSDISSUEDATE_ALV>-MANDT = 1.
<RJKSDISSUEDATE_ALV>-MEDIA_ISSUE = 1.
<RJKSDISSUEDATE_ALV>-VKORG = 1.
<RJKSDISSUEDATE_ALV>-VTWEG = 1.
<RJKSDISSUEDATE_ALV>-WERKS = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_RJKSDISSUEDATE_ALV-RETURNPHASE, sy-vline,
  WA_RJKSDISSUEDATE_ALV-PSTYE, sy-vline,
  WA_RJKSDISSUEDATE_ALV-ISMCOLLDATE01, sy-vline,
  WA_RJKSDISSUEDATE_ALV-ISMRCPATTERN, sy-vline,
  WA_RJKSDISSUEDATE_ALV-ISMCOLLDATE02, sy-vline,
  WA_RJKSDISSUEDATE_ALV-ISMCOLLRULE01, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_RJKSDISSUEDATE_ALV 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_RJKSDISSUEDATE_ALV 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_RJKSDISSUEDATE_ALV INTO WA_RJKSDISSUEDATE_ALV.


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

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

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

*Conversion exit CUNIT, internal->external for field QUANTITY_UNIT
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_RJKSDISSUEDATE_ALV-QUANTITY_UNIT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RJKSDISSUEDATE_ALV-QUANTITY_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_RJKSDISSUEDATE_ALV_STR, 
MANDT TYPE STRING,
MEDIA_ISSUE TYPE STRING,
VKORG TYPE STRING,
VTWEG TYPE STRING,
WERKS TYPE STRING,
RETURNPHASE TYPE STRING,
PSTYE TYPE STRING,
ISMCOLLDATE01 TYPE STRING,
ISMRCPATTERN TYPE STRING,
ISMCOLLDATE02 TYPE STRING,
ISMCOLLRULE01 TYPE STRING,
ISMCOLLRULE02 TYPE STRING,
ISMCOLLDATEMAN TYPE STRING,
ISMCOLLDATEMAN2 TYPE STRING,
ISMMATRETURN TYPE STRING,
ISMRETURNBEGIN TYPE STRING,
ISMRETURNEND TYPE STRING,
MED_PROD TYPE STRING,
MED_FAM TYPE STRING,
RCINFO TYPE STRING,
RECALLGROUP TYPE STRING,
EXLRULE TYPE STRING,
MANUAL TYPE STRING,
ISMONSALEDATE TYPE STRING,
ISMOFFSALEDATE TYPE STRING,
ISMLATESTRET TYPE STRING,
ISMLATESTRETEDI TYPE STRING,
MAKTX TYPE STRING,
TEXT_ICON TYPE STRING,
QUANTITY_CONTRACTS TYPE STRING,
QUANTITY_RM TYPE STRING,
QUANTITY_RECALL TYPE STRING,
QUANTITY_DELIVERY TYPE STRING,
QUANTITY_RETURNS TYPE STRING,
QUANTITY_XPCT_RETURNS TYPE STRING,
QUANTITY_RCINIT TYPE STRING,
QUANTITY_RCPROC TYPE STRING,
QUANTITY_UNIT TYPE STRING,
CELLTAB TYPE STRING,
LOCK_ICON TYPE STRING,END OF T_EKKO_STR.
DATA: WA_RJKSDISSUEDATE_ALV_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_RJKSDISSUEDATE_ALV_STR-MANDT sy-vline 
WA_RJKSDISSUEDATE_ALV_STR-MEDIA_ISSUE sy-vline 
WA_RJKSDISSUEDATE_ALV_STR-VKORG sy-vline 
WA_RJKSDISSUEDATE_ALV_STR-VTWEG sy-vline 
WA_RJKSDISSUEDATE_ALV_STR-WERKS sy-vline 
WA_RJKSDISSUEDATE_ALV_STR-RETURNPHASE sy-vline 
WA_RJKSDISSUEDATE_ALV_STR-PSTYE sy-vline 
WA_RJKSDISSUEDATE_ALV_STR-ISMCOLLDATE01 sy-vline 
WA_RJKSDISSUEDATE_ALV_STR-ISMRCPATTERN sy-vline 
WA_RJKSDISSUEDATE_ALV_STR-ISMCOLLDATE02 sy-vline 
WA_RJKSDISSUEDATE_ALV_STR-ISMCOLLRULE01 sy-vline 
WA_RJKSDISSUEDATE_ALV_STR-ISMCOLLRULE02 sy-vline 
WA_RJKSDISSUEDATE_ALV_STR-ISMCOLLDATEMAN sy-vline 
WA_RJKSDISSUEDATE_ALV_STR-ISMCOLLDATEMAN2 sy-vline 
WA_RJKSDISSUEDATE_ALV_STR-ISMMATRETURN sy-vline 
WA_RJKSDISSUEDATE_ALV_STR-ISMRETURNBEGIN sy-vline 
WA_RJKSDISSUEDATE_ALV_STR-ISMRETURNEND sy-vline 
WA_RJKSDISSUEDATE_ALV_STR-MED_PROD sy-vline 
WA_RJKSDISSUEDATE_ALV_STR-MED_FAM sy-vline 
WA_RJKSDISSUEDATE_ALV_STR-RCINFO sy-vline 
WA_RJKSDISSUEDATE_ALV_STR-RECALLGROUP sy-vline 
WA_RJKSDISSUEDATE_ALV_STR-EXLRULE sy-vline 
WA_RJKSDISSUEDATE_ALV_STR-MANUAL sy-vline 
WA_RJKSDISSUEDATE_ALV_STR-ISMONSALEDATE sy-vline 
WA_RJKSDISSUEDATE_ALV_STR-ISMOFFSALEDATE sy-vline 
WA_RJKSDISSUEDATE_ALV_STR-ISMLATESTRET sy-vline 
WA_RJKSDISSUEDATE_ALV_STR-ISMLATESTRETEDI sy-vline 
WA_RJKSDISSUEDATE_ALV_STR-MAKTX sy-vline 
WA_RJKSDISSUEDATE_ALV_STR-TEXT_ICON sy-vline 
WA_RJKSDISSUEDATE_ALV_STR-QUANTITY_CONTRACTS sy-vline 
WA_RJKSDISSUEDATE_ALV_STR-QUANTITY_RM sy-vline 
WA_RJKSDISSUEDATE_ALV_STR-QUANTITY_RECALL sy-vline 
WA_RJKSDISSUEDATE_ALV_STR-QUANTITY_DELIVERY sy-vline 
WA_RJKSDISSUEDATE_ALV_STR-QUANTITY_RETURNS sy-vline 
WA_RJKSDISSUEDATE_ALV_STR-QUANTITY_XPCT_RETURNS sy-vline 
WA_RJKSDISSUEDATE_ALV_STR-QUANTITY_RCINIT sy-vline 
WA_RJKSDISSUEDATE_ALV_STR-QUANTITY_RCPROC sy-vline 
WA_RJKSDISSUEDATE_ALV_STR-QUANTITY_UNIT sy-vline 
WA_RJKSDISSUEDATE_ALV_STR-CELLTAB sy-vline 
WA_RJKSDISSUEDATE_ALV_STR-LOCK_ICON sy-vline      INTO ld_text SEPARATED BY SPACE.

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