ABAP Select data from SAP table MPLAN_HEADER_LIST_OPTIONS into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM MPLAN_HEADER_LIST_OPTIONS
*  INTO TABLE @DATA(IT_MPLAN_HEADER_LIST_OPTIONS2).
*--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_MPLAN_HEADER_LIST_OPTIONS INDEX 1 INTO DATA(WA_MPLAN_HEADER_LIST_OPTIONS2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<MPLAN_HEADER_LIST_OPTIONS>-WARPL = 1.
<MPLAN_HEADER_LIST_OPTIONS>-WPTXT = 1.
<MPLAN_HEADER_LIST_OPTIONS>-STRAT = 1.
<MPLAN_HEADER_LIST_OPTIONS>-MPTYP = 1.
<MPLAN_HEADER_LIST_OPTIONS>-PLANSORT = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_MPLAN_HEADER_LIST_OPTIONS-POINT, sy-vline,
  WA_MPLAN_HEADER_LIST_OPTIONS-BEGRU, sy-vline,
  WA_MPLAN_HEADER_LIST_OPTIONS-STAI1, sy-vline,
  WA_MPLAN_HEADER_LIST_OPTIONS-STAE1, sy-vline,
  WA_MPLAN_HEADER_LIST_OPTIONS-STICH, sy-vline,
  WA_MPLAN_HEADER_LIST_OPTIONS-SFAKT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_MPLAN_HEADER_LIST_OPTIONS 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_MPLAN_HEADER_LIST_OPTIONS 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_MPLAN_HEADER_LIST_OPTIONS INTO WA_MPLAN_HEADER_LIST_OPTIONS.


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

*Conversion exit ALPHA, internal->external for field POINT
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_MPLAN_HEADER_LIST_OPTIONS-POINT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MPLAN_HEADER_LIST_OPTIONS-POINT.
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_MPLAN_HEADER_LIST_OPTIONS_STR, 
WARPL TYPE STRING,
WPTXT TYPE STRING,
STRAT TYPE STRING,
MPTYP TYPE STRING,
PLANSORT TYPE STRING,
POINT TYPE STRING,
BEGRU TYPE STRING,
STAI1 TYPE STRING,
STAE1 TYPE STRING,
STICH TYPE STRING,
SFAKT TYPE STRING,
HORIZ TYPE STRING,
ABRHO TYPE STRING,
VSPOS TYPE STRING,
VSNEG TYPE STRING,
ENDDT TYPE STRING,
ERNAM TYPE STRING,
ERSDT TYPE STRING,
AENAM TYPE STRING,
AEDAT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_MPLAN_HEADER_LIST_OPTIONS_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_MPLAN_HEADER_LIST_OPTIONS_STR-WARPL sy-vline 
WA_MPLAN_HEADER_LIST_OPTIONS_STR-WPTXT sy-vline 
WA_MPLAN_HEADER_LIST_OPTIONS_STR-STRAT sy-vline 
WA_MPLAN_HEADER_LIST_OPTIONS_STR-MPTYP sy-vline 
WA_MPLAN_HEADER_LIST_OPTIONS_STR-PLANSORT sy-vline 
WA_MPLAN_HEADER_LIST_OPTIONS_STR-POINT sy-vline 
WA_MPLAN_HEADER_LIST_OPTIONS_STR-BEGRU sy-vline 
WA_MPLAN_HEADER_LIST_OPTIONS_STR-STAI1 sy-vline 
WA_MPLAN_HEADER_LIST_OPTIONS_STR-STAE1 sy-vline 
WA_MPLAN_HEADER_LIST_OPTIONS_STR-STICH sy-vline 
WA_MPLAN_HEADER_LIST_OPTIONS_STR-SFAKT sy-vline 
WA_MPLAN_HEADER_LIST_OPTIONS_STR-HORIZ sy-vline 
WA_MPLAN_HEADER_LIST_OPTIONS_STR-ABRHO sy-vline 
WA_MPLAN_HEADER_LIST_OPTIONS_STR-VSPOS sy-vline 
WA_MPLAN_HEADER_LIST_OPTIONS_STR-VSNEG sy-vline 
WA_MPLAN_HEADER_LIST_OPTIONS_STR-ENDDT sy-vline 
WA_MPLAN_HEADER_LIST_OPTIONS_STR-ERNAM sy-vline 
WA_MPLAN_HEADER_LIST_OPTIONS_STR-ERSDT sy-vline 
WA_MPLAN_HEADER_LIST_OPTIONS_STR-AENAM sy-vline 
WA_MPLAN_HEADER_LIST_OPTIONS_STR-AEDAT sy-vline      INTO ld_text SEPARATED BY SPACE.

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