ABAP Select data from SAP table MPESV_RTGF_WORKLIST_FILTER into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM MPESV_RTGF_WORKLIST_FILTER
*  INTO TABLE @DATA(IT_MPESV_RTGF_WORKLIST_FILTER2).
*--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_MPESV_RTGF_WORKLIST_FILTER INDEX 1 INTO DATA(WA_MPESV_RTGF_WORKLIST_FILTER2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<MPESV_RTGF_WORKLIST_FILTER>-TEXTSEARCH = 1.
<MPESV_RTGF_WORKLIST_FILTER>-BILLOFOPERATIONSGROUP = 1.
<MPESV_RTGF_WORKLIST_FILTER>-BILLOFOPERATIONSVARIANT = 1.
<MPESV_RTGF_WORKLIST_FILTER>-BILLOFOPERATIONSVERSIONSTATUS = 1.
<MPESV_RTGF_WORKLIST_FILTER>-MATERIAL = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_MPESV_RTGF_WORKLIST_FILTER-PLANT, sy-vline,
  WA_MPESV_RTGF_WORKLIST_FILTER-BUSINESS_PROCESS, sy-vline,
  WA_MPESV_RTGF_WORKLIST_FILTER-CHANGERECORD, sy-vline,
  WA_MPESV_RTGF_WORKLIST_FILTER-WORKFLOWSTATUS, sy-vline,
  WA_MPESV_RTGF_WORKLIST_FILTER-REWORK, sy-vline,
  WA_MPESV_RTGF_WORKLIST_FILTER-ROUTING_LAST_VERS_DISPLAY, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_MPESV_RTGF_WORKLIST_FILTER 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_MPESV_RTGF_WORKLIST_FILTER 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_MPESV_RTGF_WORKLIST_FILTER INTO WA_MPESV_RTGF_WORKLIST_FILTER.


*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 BILLOFOPERATIONSGROUP
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_MPESV_RTGF_WORKLIST_FILTER-BILLOFOPERATIONSGROUP
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MPESV_RTGF_WORKLIST_FILTER-BILLOFOPERATIONSGROUP.
WRITE:/ 'New Value:', ld_input.

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

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

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

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

*Conversion exit ALPHA, internal->external for field BILLOFOPERATIONSVARIANTPLN
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_MPESV_RTGF_WORKLIST_FILTER-BILLOFOPERATIONSVARIANTPLN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MPESV_RTGF_WORKLIST_FILTER-BILLOFOPERATIONSVARIANTPLN.
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_MPESV_RTGF_WORKLIST_FILTER_STR, 
TEXTSEARCH TYPE STRING,
BILLOFOPERATIONSGROUP TYPE STRING,
BILLOFOPERATIONSVARIANT TYPE STRING,
BILLOFOPERATIONSVERSIONSTATUS TYPE STRING,
MATERIAL TYPE STRING,
PLANT TYPE STRING,
BUSINESS_PROCESS TYPE STRING,
CHANGERECORD TYPE STRING,
WORKFLOWSTATUS TYPE STRING,
REWORK TYPE STRING,
ROUTING_LAST_VERS_DISPLAY TYPE STRING,
BILLOFOPERATIONSGROUPPLN TYPE STRING,
BILLOFOPERATIONSVARIANTPLN TYPE STRING,
TEMPLATE_TYPE TYPE STRING,
TEMPLATE_CATEGORY TYPE STRING,
DUMMY_PLKO_INCL_EEW_PS TYPE STRING,END OF T_EKKO_STR.
DATA: WA_MPESV_RTGF_WORKLIST_FILTER_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_MPESV_RTGF_WORKLIST_FILTER_STR-TEXTSEARCH sy-vline 
WA_MPESV_RTGF_WORKLIST_FILTER_STR-BILLOFOPERATIONSGROUP sy-vline 
WA_MPESV_RTGF_WORKLIST_FILTER_STR-BILLOFOPERATIONSVARIANT sy-vline 
WA_MPESV_RTGF_WORKLIST_FILTER_STR-BILLOFOPERATIONSVERSIONSTATUS sy-vline 
WA_MPESV_RTGF_WORKLIST_FILTER_STR-MATERIAL sy-vline 
WA_MPESV_RTGF_WORKLIST_FILTER_STR-PLANT sy-vline 
WA_MPESV_RTGF_WORKLIST_FILTER_STR-BUSINESS_PROCESS sy-vline 
WA_MPESV_RTGF_WORKLIST_FILTER_STR-CHANGERECORD sy-vline 
WA_MPESV_RTGF_WORKLIST_FILTER_STR-WORKFLOWSTATUS sy-vline 
WA_MPESV_RTGF_WORKLIST_FILTER_STR-REWORK sy-vline 
WA_MPESV_RTGF_WORKLIST_FILTER_STR-ROUTING_LAST_VERS_DISPLAY sy-vline 
WA_MPESV_RTGF_WORKLIST_FILTER_STR-BILLOFOPERATIONSGROUPPLN sy-vline 
WA_MPESV_RTGF_WORKLIST_FILTER_STR-BILLOFOPERATIONSVARIANTPLN sy-vline 
WA_MPESV_RTGF_WORKLIST_FILTER_STR-TEMPLATE_TYPE sy-vline 
WA_MPESV_RTGF_WORKLIST_FILTER_STR-TEMPLATE_CATEGORY sy-vline 
WA_MPESV_RTGF_WORKLIST_FILTER_STR-DUMMY_PLKO_INCL_EEW_PS sy-vline      INTO ld_text SEPARATED BY SPACE.

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