ABAP Select data from SAP table MPES_RTGF_TMPL_WORKLIST into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM MPES_RTGF_TMPL_WORKLIST
*  INTO TABLE @DATA(IT_MPES_RTGF_TMPL_WORKLIST2).
*--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_MPES_RTGF_TMPL_WORKLIST INDEX 1 INTO DATA(WA_MPES_RTGF_TMPL_WORKLIST2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<MPES_RTGF_TMPL_WORKLIST>-PLNTY = 1.
<MPES_RTGF_TMPL_WORKLIST>-PLNNR = 1.
<MPES_RTGF_TMPL_WORKLIST>-PLNAL = 1.
<MPES_RTGF_TMPL_WORKLIST>-VERSN = 1.
<MPES_RTGF_TMPL_WORKLIST>-VERSN_T = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_MPES_RTGF_TMPL_WORKLIST-TEMPLATE_DESCRIPTION, sy-vline,
  WA_MPES_RTGF_TMPL_WORKLIST-VERSN_DESCRIPTION, sy-vline,
  WA_MPES_RTGF_TMPL_WORKLIST-STATUS, sy-vline,
  WA_MPES_RTGF_TMPL_WORKLIST-STATUS_TEXT, sy-vline,
  WA_MPES_RTGF_TMPL_WORKLIST-WERKS, sy-vline,
  WA_MPES_RTGF_TMPL_WORKLIST-LAST_VERSN, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_MPES_RTGF_TMPL_WORKLIST 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_MPES_RTGF_TMPL_WORKLIST 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_MPES_RTGF_TMPL_WORKLIST INTO WA_MPES_RTGF_TMPL_WORKLIST.


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

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

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

*Conversion exit ALPHA, internal->external for field VERSN_T
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_MPES_RTGF_TMPL_WORKLIST-VERSN_T
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MPES_RTGF_TMPL_WORKLIST-VERSN_T.
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_MPES_RTGF_TMPL_WORKLIST_STR, 
PLNTY TYPE STRING,
PLNNR TYPE STRING,
PLNAL TYPE STRING,
VERSN TYPE STRING,
VERSN_T TYPE STRING,
TEMPLATE_DESCRIPTION TYPE STRING,
VERSN_DESCRIPTION TYPE STRING,
STATUS TYPE STRING,
STATUS_TEXT TYPE STRING,
WERKS TYPE STRING,
LAST_VERSN TYPE STRING,
BUSINESSPROCESS TYPE STRING,
BUSINESSPROCESS_TEXT TYPE STRING,
REWORK TYPE STRING,
RELAXED TYPE STRING,
EXECUTION_IN_ME TYPE STRING,
CREATED_BY TYPE STRING,
CREATED_AT TYPE STRING,
CHANGED_BY TYPE STRING,
CHANGED_AT TYPE STRING,
TEMPLATE_TYPE TYPE STRING,
TEMPLATE_TYPE_TEXT TYPE STRING,
TEMPLATE_CATEGORY TYPE STRING,
TEMPLATE_CATEGORY_TEXT TYPE STRING,
VERSN_SEQ_NUM TYPE STRING,
FOLDER_ID TYPE STRING,
IS_LINK TYPE STRING,
WORKFLOW_STATUS TYPE STRING,
WORKFLOW_STATUS_TEXT TYPE STRING,
VERSION_PROFILE TYPE STRING,
NUM_VERS_SUCCESSORS TYPE STRING,END OF T_EKKO_STR.
DATA: WA_MPES_RTGF_TMPL_WORKLIST_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_MPES_RTGF_TMPL_WORKLIST_STR-PLNTY sy-vline 
WA_MPES_RTGF_TMPL_WORKLIST_STR-PLNNR sy-vline 
WA_MPES_RTGF_TMPL_WORKLIST_STR-PLNAL sy-vline 
WA_MPES_RTGF_TMPL_WORKLIST_STR-VERSN sy-vline 
WA_MPES_RTGF_TMPL_WORKLIST_STR-VERSN_T sy-vline 
WA_MPES_RTGF_TMPL_WORKLIST_STR-TEMPLATE_DESCRIPTION sy-vline 
WA_MPES_RTGF_TMPL_WORKLIST_STR-VERSN_DESCRIPTION sy-vline 
WA_MPES_RTGF_TMPL_WORKLIST_STR-STATUS sy-vline 
WA_MPES_RTGF_TMPL_WORKLIST_STR-STATUS_TEXT sy-vline 
WA_MPES_RTGF_TMPL_WORKLIST_STR-WERKS sy-vline 
WA_MPES_RTGF_TMPL_WORKLIST_STR-LAST_VERSN sy-vline 
WA_MPES_RTGF_TMPL_WORKLIST_STR-BUSINESSPROCESS sy-vline 
WA_MPES_RTGF_TMPL_WORKLIST_STR-BUSINESSPROCESS_TEXT sy-vline 
WA_MPES_RTGF_TMPL_WORKLIST_STR-REWORK sy-vline 
WA_MPES_RTGF_TMPL_WORKLIST_STR-RELAXED sy-vline 
WA_MPES_RTGF_TMPL_WORKLIST_STR-EXECUTION_IN_ME sy-vline 
WA_MPES_RTGF_TMPL_WORKLIST_STR-CREATED_BY sy-vline 
WA_MPES_RTGF_TMPL_WORKLIST_STR-CREATED_AT sy-vline 
WA_MPES_RTGF_TMPL_WORKLIST_STR-CHANGED_BY sy-vline 
WA_MPES_RTGF_TMPL_WORKLIST_STR-CHANGED_AT sy-vline 
WA_MPES_RTGF_TMPL_WORKLIST_STR-TEMPLATE_TYPE sy-vline 
WA_MPES_RTGF_TMPL_WORKLIST_STR-TEMPLATE_TYPE_TEXT sy-vline 
WA_MPES_RTGF_TMPL_WORKLIST_STR-TEMPLATE_CATEGORY sy-vline 
WA_MPES_RTGF_TMPL_WORKLIST_STR-TEMPLATE_CATEGORY_TEXT sy-vline 
WA_MPES_RTGF_TMPL_WORKLIST_STR-VERSN_SEQ_NUM sy-vline 
WA_MPES_RTGF_TMPL_WORKLIST_STR-FOLDER_ID sy-vline 
WA_MPES_RTGF_TMPL_WORKLIST_STR-IS_LINK sy-vline 
WA_MPES_RTGF_TMPL_WORKLIST_STR-WORKFLOW_STATUS sy-vline 
WA_MPES_RTGF_TMPL_WORKLIST_STR-WORKFLOW_STATUS_TEXT sy-vline 
WA_MPES_RTGF_TMPL_WORKLIST_STR-VERSION_PROFILE sy-vline 
WA_MPES_RTGF_TMPL_WORKLIST_STR-NUM_VERS_SUCCESSORS sy-vline      INTO ld_text SEPARATED BY SPACE.

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