ABAP Select data from SAP table MPLAN_MPLA_MASS into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP MPLAN_MPLA_MASS 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_MPLA_MASS. 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_MPLA_MASS 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_MPLA_MASS TYPE STANDARD TABLE OF MPLAN_MPLA_MASS,
      WA_MPLAN_MPLA_MASS TYPE MPLAN_MPLA_MASS,
      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_MPLA_MASS> TYPE MPLAN_MPLA_MASS.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM MPLAN_MPLA_MASS
*  INTO TABLE @DATA(IT_MPLAN_MPLA_MASS2).
*--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_MPLA_MASS INDEX 1 INTO DATA(WA_MPLAN_MPLA_MASS2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<MPLAN_MPLA_MASS>-VSPOS = 1.
<MPLAN_MPLA_MASS>-VSNEG = 1.
<MPLAN_MPLA_MASS>-TOPOS = 1.
<MPLAN_MPLA_MASS>-TONEG = 1.
<MPLAN_MPLA_MASS>-SFAKT = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_MPLAN_MPLA_MASS-HORIZ, sy-vline,
  WA_MPLAN_MPLA_MASS-ABRHO, sy-vline,
  WA_MPLAN_MPLA_MASS-HUNIT, sy-vline,
  WA_MPLAN_MPLA_MASS-CALL_CONFIRM, sy-vline,
  WA_MPLAN_MPLA_MASS-PLAN_SORT, sy-vline,
  WA_MPLAN_MPLA_MASS-BEGRU, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_MPLAN_MPLA_MASS 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_MPLA_MASS 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_MPLA_MASS INTO WA_MPLAN_MPLA_MASS.


*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 CUNIT, internal->external for field HUNIT
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_MPLAN_MPLA_MASS-HUNIT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MPLAN_MPLA_MASS-HUNIT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit EAMQ2, internal->external for field HORIZ_QUALIFIER
CALL FUNCTION 'CONVERSION_EXIT_EAMQ2_OUTPUT'
  EXPORTING
    input =                      WA_MPLAN_MPLA_MASS-HORIZ_QUALIFIER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MPLAN_MPLA_MASS-HORIZ_QUALIFIER.
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_MPLA_MASS_STR, 
VSPOS TYPE STRING,
VSNEG TYPE STRING,
TOPOS TYPE STRING,
TONEG TYPE STRING,
SFAKT TYPE STRING,
HORIZ TYPE STRING,
ABRHO TYPE STRING,
HUNIT TYPE STRING,
CALL_CONFIRM TYPE STRING,
PLAN_SORT TYPE STRING,
BEGRU TYPE STRING,
TGOON TYPE STRING,
ANDOR TYPE STRING,
FABKL TYPE STRING,
STICH TYPE STRING,
HORIZ_QUALIFIER TYPE STRING,
ENDDT_FOR_SCHED TYPE STRING,
END_COUNTER TYPE STRING,END OF T_EKKO_STR.
DATA: WA_MPLAN_MPLA_MASS_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_MPLA_MASS_STR-VSPOS sy-vline 
WA_MPLAN_MPLA_MASS_STR-VSNEG sy-vline 
WA_MPLAN_MPLA_MASS_STR-TOPOS sy-vline 
WA_MPLAN_MPLA_MASS_STR-TONEG sy-vline 
WA_MPLAN_MPLA_MASS_STR-SFAKT sy-vline 
WA_MPLAN_MPLA_MASS_STR-HORIZ sy-vline 
WA_MPLAN_MPLA_MASS_STR-ABRHO sy-vline 
WA_MPLAN_MPLA_MASS_STR-HUNIT sy-vline 
WA_MPLAN_MPLA_MASS_STR-CALL_CONFIRM sy-vline 
WA_MPLAN_MPLA_MASS_STR-PLAN_SORT sy-vline 
WA_MPLAN_MPLA_MASS_STR-BEGRU sy-vline 
WA_MPLAN_MPLA_MASS_STR-TGOON sy-vline 
WA_MPLAN_MPLA_MASS_STR-ANDOR sy-vline 
WA_MPLAN_MPLA_MASS_STR-FABKL sy-vline 
WA_MPLAN_MPLA_MASS_STR-STICH sy-vline 
WA_MPLAN_MPLA_MASS_STR-HORIZ_QUALIFIER sy-vline 
WA_MPLAN_MPLA_MASS_STR-ENDDT_FOR_SCHED sy-vline 
WA_MPLAN_MPLA_MASS_STR-END_COUNTER sy-vline      INTO ld_text SEPARATED BY SPACE.

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