ABAP Select data from SAP table ISSWCSTRTDATA2 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP ISSWCSTRTDATA2 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 ISSWCSTRTDATA2. 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 ISSWCSTRTDATA2 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_ISSWCSTRTDATA2 TYPE STANDARD TABLE OF ISSWCSTRTDATA2,
      WA_ISSWCSTRTDATA2 TYPE ISSWCSTRTDATA2,
      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: <ISSWCSTRTDATA2> TYPE ISSWCSTRTDATA2.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_ISSWCSTRTDATA2.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM ISSWCSTRTDATA2
  INTO TABLE IT_ISSWCSTRTDATA2.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM ISSWCSTRTDATA2
*  INTO TABLE @DATA(IT_ISSWCSTRTDATA22).
*--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_ISSWCSTRTDATA2 INDEX 1 INTO DATA(WA_ISSWCSTRTDATA22).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_ISSWCSTRTDATA2 ASSIGNING <ISSWCSTRTDATA2>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<ISSWCSTRTDATA2>-KEY = 1.
<ISSWCSTRTDATA2>-PARENT_KEY = 1.
<ISSWCSTRTDATA2>-ROOT_KEY = 1.
<ISSWCSTRTDATA2>-EMBEDDEDSWSOFTWAREMATERIAL = 1.
<ISSWCSTRTDATA2>-SOFTWAREMODULETYPE = 1.

ENDLOOP.

LOOP AT IT_ISSWCSTRTDATA2 INTO WA_ISSWCSTRTDATA2.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_ISSWCSTRTDATA2-DOCUMENTTYPE, sy-vline,
  WA_ISSWCSTRTDATA2-DOCNUMBER, sy-vline,
  WA_ISSWCSTRTDATA2-EMBEDDEDSWSOFTWAREMINVERSION, sy-vline,
  WA_ISSWCSTRTDATA2-EMBEDDEDSWSOFTWAREMAXVERSION, sy-vline,
  WA_ISSWCSTRTDATA2-EMBEDDEDSWCONSTRAINTRULE, sy-vline,
  WA_ISSWCSTRTDATA2-EMBEDDEDSWCONSTRAINTOBJECTTYPE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_ISSWCSTRTDATA2 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_ISSWCSTRTDATA2 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_ISSWCSTRTDATA2 INTO WA_ISSWCSTRTDATA2.


*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 EMBEDDEDSWSOFTWAREMATERIAL
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_ISSWCSTRTDATA2-EMBEDDEDSWSOFTWAREMATERIAL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ISSWCSTRTDATA2-EMBEDDEDSWSOFTWAREMATERIAL.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field DOCNUMBER
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_ISSWCSTRTDATA2-DOCNUMBER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ISSWCSTRTDATA2-DOCNUMBER.
WRITE:/ 'New Value:', ld_input.

*Conversion exit MATN1, internal->external for field EMBEDDEDSWHARDWAREMATERIAL
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_ISSWCSTRTDATA2-EMBEDDEDSWHARDWAREMATERIAL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ISSWCSTRTDATA2-EMBEDDEDSWHARDWAREMATERIAL.
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_ISSWCSTRTDATA2_STR, 
KEY TYPE STRING,
PARENT_KEY TYPE STRING,
ROOT_KEY TYPE STRING,
EMBEDDEDSWSOFTWAREMATERIAL TYPE STRING,
SOFTWAREMODULETYPE TYPE STRING,
DOCUMENTTYPE TYPE STRING,
DOCNUMBER TYPE STRING,
EMBEDDEDSWSOFTWAREMINVERSION TYPE STRING,
EMBEDDEDSWSOFTWAREMAXVERSION TYPE STRING,
EMBEDDEDSWCONSTRAINTRULE TYPE STRING,
EMBEDDEDSWCONSTRAINTOBJECTTYPE TYPE STRING,
EMBEDDEDSWHARDWAREMATERIAL TYPE STRING,
EMBEDDEDSWFROMVERSION TYPE STRING,
EMBEDDEDSWTOVERSION TYPE STRING,
EMBEDDEDSWHARDWAREMATERIALDESC TYPE STRING,
CREATIONDATE TYPE STRING,
CREATEDBYUSER TYPE STRING,
LASTCHANGEDATE TYPE STRING,
LASTCHANGEDBYUSER TYPE STRING,END OF T_EKKO_STR.
DATA: WA_ISSWCSTRTDATA2_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_ISSWCSTRTDATA2_STR-KEY sy-vline 
WA_ISSWCSTRTDATA2_STR-PARENT_KEY sy-vline 
WA_ISSWCSTRTDATA2_STR-ROOT_KEY sy-vline 
WA_ISSWCSTRTDATA2_STR-EMBEDDEDSWSOFTWAREMATERIAL sy-vline 
WA_ISSWCSTRTDATA2_STR-SOFTWAREMODULETYPE sy-vline 
WA_ISSWCSTRTDATA2_STR-DOCUMENTTYPE sy-vline 
WA_ISSWCSTRTDATA2_STR-DOCNUMBER sy-vline 
WA_ISSWCSTRTDATA2_STR-EMBEDDEDSWSOFTWAREMINVERSION sy-vline 
WA_ISSWCSTRTDATA2_STR-EMBEDDEDSWSOFTWAREMAXVERSION sy-vline 
WA_ISSWCSTRTDATA2_STR-EMBEDDEDSWCONSTRAINTRULE sy-vline 
WA_ISSWCSTRTDATA2_STR-EMBEDDEDSWCONSTRAINTOBJECTTYPE sy-vline 
WA_ISSWCSTRTDATA2_STR-EMBEDDEDSWHARDWAREMATERIAL sy-vline 
WA_ISSWCSTRTDATA2_STR-EMBEDDEDSWFROMVERSION sy-vline 
WA_ISSWCSTRTDATA2_STR-EMBEDDEDSWTOVERSION sy-vline 
WA_ISSWCSTRTDATA2_STR-EMBEDDEDSWHARDWAREMATERIALDESC sy-vline 
WA_ISSWCSTRTDATA2_STR-CREATIONDATE sy-vline 
WA_ISSWCSTRTDATA2_STR-CREATEDBYUSER sy-vline 
WA_ISSWCSTRTDATA2_STR-LASTCHANGEDATE sy-vline 
WA_ISSWCSTRTDATA2_STR-LASTCHANGEDBYUSER sy-vline      INTO ld_text SEPARATED BY SPACE.

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