ABAP Select data from SAP table CWFLWTEMPLATE into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM CWFLWTEMPLATE
*  INTO TABLE @DATA(IT_CWFLWTEMPLATE2).
*--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_CWFLWTEMPLATE INDEX 1 INTO DATA(WA_CWFLWTEMPLATE2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<CWFLWTEMPLATE>-MANDT = 1.
<CWFLWTEMPLATE>-WRKFLWTMPLUUID = 1.
<CWFLWTEMPLATE>-WRKFLWTMPLID = 1.
<CWFLWTEMPLATE>-WRKFLWTMPLNAME = 1.
<CWFLWTEMPLATE>-WRKFLWTMPLNAMESEARCHA = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_CWFLWTEMPLATE-WRKFLWTMPLNAMESEARCHC, sy-vline,
  WA_CWFLWTEMPLATE-WRKFLWSCEN, sy-vline,
  WA_CWFLWTEMPLATE-WRKFLWSCENVERS, sy-vline,
  WA_CWFLWTEMPLATE-SAPAPPLICATIONCOMPONENT, sy-vline,
  WA_CWFLWTEMPLATE-WRKFLWTMPLTYPE, sy-vline,
  WA_CWFLWTEMPLATE-WRKFLWTMPLSTAGE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_CWFLWTEMPLATE 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_CWFLWTEMPLATE 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_CWFLWTEMPLATE INTO WA_CWFLWTEMPLATE.


*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 WRKFLWTMPLCRTEDLANG
CALL FUNCTION 'CONVERSION_EXIT_ISOLA_OUTPUT'
  EXPORTING
    input =                      WA_CWFLWTEMPLATE-WRKFLWTMPLCRTEDLANG
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CWFLWTEMPLATE-WRKFLWTMPLCRTEDLANG.
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_CWFLWTEMPLATE_STR, 
MANDT TYPE STRING,
WRKFLWTMPLUUID TYPE STRING,
WRKFLWTMPLID TYPE STRING,
WRKFLWTMPLNAME TYPE STRING,
WRKFLWTMPLNAMESEARCHA TYPE STRING,
WRKFLWTMPLNAMESEARCHC TYPE STRING,
WRKFLWSCEN TYPE STRING,
WRKFLWSCENVERS TYPE STRING,
SAPAPPLICATIONCOMPONENT TYPE STRING,
WRKFLWTMPLTYPE TYPE STRING,
WRKFLWTMPLSTAGE TYPE STRING,
WRKFLWTMPLCRTEDLANG TYPE STRING,
WRKFLWTMPLCRTEDUTCDTETME TYPE STRING,
WRKFLWTMPLCRTEDUSR TYPE STRING,
WRKFLWTMPLLASTCHGDUTCDTETME TYPE STRING,
WRKFLWTMPLLASTCHGDUSR TYPE STRING,
CONTENTDEVELOPMENTALLOWED TYPE STRING,END OF T_EKKO_STR.
DATA: WA_CWFLWTEMPLATE_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_CWFLWTEMPLATE_STR-MANDT sy-vline 
WA_CWFLWTEMPLATE_STR-WRKFLWTMPLUUID sy-vline 
WA_CWFLWTEMPLATE_STR-WRKFLWTMPLID sy-vline 
WA_CWFLWTEMPLATE_STR-WRKFLWTMPLNAME sy-vline 
WA_CWFLWTEMPLATE_STR-WRKFLWTMPLNAMESEARCHA sy-vline 
WA_CWFLWTEMPLATE_STR-WRKFLWTMPLNAMESEARCHC sy-vline 
WA_CWFLWTEMPLATE_STR-WRKFLWSCEN sy-vline 
WA_CWFLWTEMPLATE_STR-WRKFLWSCENVERS sy-vline 
WA_CWFLWTEMPLATE_STR-SAPAPPLICATIONCOMPONENT sy-vline 
WA_CWFLWTEMPLATE_STR-WRKFLWTMPLTYPE sy-vline 
WA_CWFLWTEMPLATE_STR-WRKFLWTMPLSTAGE sy-vline 
WA_CWFLWTEMPLATE_STR-WRKFLWTMPLCRTEDLANG sy-vline 
WA_CWFLWTEMPLATE_STR-WRKFLWTMPLCRTEDUTCDTETME sy-vline 
WA_CWFLWTEMPLATE_STR-WRKFLWTMPLCRTEDUSR sy-vline 
WA_CWFLWTEMPLATE_STR-WRKFLWTMPLLASTCHGDUTCDTETME sy-vline 
WA_CWFLWTEMPLATE_STR-WRKFLWTMPLLASTCHGDUSR sy-vline 
WA_CWFLWTEMPLATE_STR-CONTENTDEVELOPMENTALLOWED sy-vline      INTO ld_text SEPARATED BY SPACE.

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