ABAP Select data from SAP table MPLAN_MPLA_UPDATE 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_UPDATE 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_UPDATE. 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_UPDATE 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_UPDATE TYPE STANDARD TABLE OF MPLAN_MPLA_UPDATE,
      WA_MPLAN_MPLA_UPDATE TYPE MPLAN_MPLA_UPDATE,
      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_UPDATE> TYPE MPLAN_MPLA_UPDATE.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM MPLAN_MPLA_UPDATE
*  INTO TABLE @DATA(IT_MPLAN_MPLA_UPDATE2).
*--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_UPDATE INDEX 1 INTO DATA(WA_MPLAN_MPLA_UPDATE2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<MPLAN_MPLA_UPDATE>-WARPL = 1.
<MPLAN_MPLA_UPDATE>-ERKNZ = 1.
<MPLAN_MPLA_UPDATE>-AEKNZ = 1.
<MPLAN_MPLA_UPDATE>-ERSDT = 1.
<MPLAN_MPLA_UPDATE>-ERNAM = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_MPLAN_MPLA_UPDATE-AEDAT, sy-vline,
  WA_MPLAN_MPLA_UPDATE-AENAM, sy-vline,
  WA_MPLAN_MPLA_UPDATE-WPTXT, sy-vline,
  WA_MPLAN_MPLA_UPDATE-STRAT, sy-vline,
  WA_MPLAN_MPLA_UPDATE-ABRHO, sy-vline,
  WA_MPLAN_MPLA_UPDATE-EQUNR, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_MPLAN_MPLA_UPDATE 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_UPDATE 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_UPDATE INTO WA_MPLAN_MPLA_UPDATE.


*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_MPLA_UPDATE-WARPL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MPLAN_MPLA_UPDATE-WARPL.
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_UPDATE_STR, 
WARPL TYPE STRING,
ERKNZ TYPE STRING,
AEKNZ TYPE STRING,
ERSDT TYPE STRING,
ERNAM TYPE STRING,
AEDAT TYPE STRING,
AENAM TYPE STRING,
WPTXT TYPE STRING,
STRAT TYPE STRING,
ABRHO TYPE STRING,
EQUNR TYPE STRING,
TPLNR TYPE STRING,
KUNUM TYPE STRING,
LTKNZ TYPE STRING,
LVORM TYPE STRING,
ANZPS TYPE STRING,
ABNUM TYPE STRING,
LANGU TYPE STRING,
VSPOS TYPE STRING,
VSNEG TYPE STRING,
TOPOS TYPE STRING,
TONEG TYPE STRING,
SFAKT TYPE STRING,
STICH TYPE STRING,
TGOON TYPE STRING,
HORIZ TYPE STRING,
HORIZ_DAYS TYPE STRING,
HORIZ_QUALIFIER TYPE STRING,
ANDOR TYPE STRING,
KNAUT TYPE STRING,
BEGRU TYPE STRING,
OBJNR TYPE STRING,
MPTYP TYPE STRING,
HUNIT TYPE STRING,
STADT TYPE STRING,
SZAEH TYPE STRING,
CALL_CONFIRM TYPE STRING,
PLAN_SORT TYPE STRING,
FABKL TYPE STRING,
PUFFP TYPE STRING,
PUFFN TYPE STRING,
START_DATE TYPE STRING,
START_TIME TYPE STRING,
CALL_UPDATE_IND TYPE STRING,
MCP_SF TYPE STRING,
ENDDT_FOR_SCHED TYPE STRING,
END_COUNTER TYPE STRING,
DUMMY_MPLA_INCL_EEW_PS TYPE STRING,END OF T_EKKO_STR.
DATA: WA_MPLAN_MPLA_UPDATE_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_UPDATE_STR-WARPL sy-vline 
WA_MPLAN_MPLA_UPDATE_STR-ERKNZ sy-vline 
WA_MPLAN_MPLA_UPDATE_STR-AEKNZ sy-vline 
WA_MPLAN_MPLA_UPDATE_STR-ERSDT sy-vline 
WA_MPLAN_MPLA_UPDATE_STR-ERNAM sy-vline 
WA_MPLAN_MPLA_UPDATE_STR-AEDAT sy-vline 
WA_MPLAN_MPLA_UPDATE_STR-AENAM sy-vline 
WA_MPLAN_MPLA_UPDATE_STR-WPTXT sy-vline 
WA_MPLAN_MPLA_UPDATE_STR-STRAT sy-vline 
WA_MPLAN_MPLA_UPDATE_STR-ABRHO sy-vline 
WA_MPLAN_MPLA_UPDATE_STR-EQUNR sy-vline 
WA_MPLAN_MPLA_UPDATE_STR-TPLNR sy-vline 
WA_MPLAN_MPLA_UPDATE_STR-KUNUM sy-vline 
WA_MPLAN_MPLA_UPDATE_STR-LTKNZ sy-vline 
WA_MPLAN_MPLA_UPDATE_STR-LVORM sy-vline 
WA_MPLAN_MPLA_UPDATE_STR-ANZPS sy-vline 
WA_MPLAN_MPLA_UPDATE_STR-ABNUM sy-vline 
WA_MPLAN_MPLA_UPDATE_STR-LANGU sy-vline 
WA_MPLAN_MPLA_UPDATE_STR-VSPOS sy-vline 
WA_MPLAN_MPLA_UPDATE_STR-VSNEG sy-vline 
WA_MPLAN_MPLA_UPDATE_STR-TOPOS sy-vline 
WA_MPLAN_MPLA_UPDATE_STR-TONEG sy-vline 
WA_MPLAN_MPLA_UPDATE_STR-SFAKT sy-vline 
WA_MPLAN_MPLA_UPDATE_STR-STICH sy-vline 
WA_MPLAN_MPLA_UPDATE_STR-TGOON sy-vline 
WA_MPLAN_MPLA_UPDATE_STR-HORIZ sy-vline 
WA_MPLAN_MPLA_UPDATE_STR-HORIZ_DAYS sy-vline 
WA_MPLAN_MPLA_UPDATE_STR-HORIZ_QUALIFIER sy-vline 
WA_MPLAN_MPLA_UPDATE_STR-ANDOR sy-vline 
WA_MPLAN_MPLA_UPDATE_STR-KNAUT sy-vline 
WA_MPLAN_MPLA_UPDATE_STR-BEGRU sy-vline 
WA_MPLAN_MPLA_UPDATE_STR-OBJNR sy-vline 
WA_MPLAN_MPLA_UPDATE_STR-MPTYP sy-vline 
WA_MPLAN_MPLA_UPDATE_STR-HUNIT sy-vline 
WA_MPLAN_MPLA_UPDATE_STR-STADT sy-vline 
WA_MPLAN_MPLA_UPDATE_STR-SZAEH sy-vline 
WA_MPLAN_MPLA_UPDATE_STR-CALL_CONFIRM sy-vline 
WA_MPLAN_MPLA_UPDATE_STR-PLAN_SORT sy-vline 
WA_MPLAN_MPLA_UPDATE_STR-FABKL sy-vline 
WA_MPLAN_MPLA_UPDATE_STR-PUFFP sy-vline 
WA_MPLAN_MPLA_UPDATE_STR-PUFFN sy-vline 
WA_MPLAN_MPLA_UPDATE_STR-START_DATE sy-vline 
WA_MPLAN_MPLA_UPDATE_STR-START_TIME sy-vline 
WA_MPLAN_MPLA_UPDATE_STR-CALL_UPDATE_IND sy-vline 
WA_MPLAN_MPLA_UPDATE_STR-MCP_SF sy-vline 
WA_MPLAN_MPLA_UPDATE_STR-ENDDT_FOR_SCHED sy-vline 
WA_MPLAN_MPLA_UPDATE_STR-END_COUNTER sy-vline 
WA_MPLAN_MPLA_UPDATE_STR-DUMMY_MPLA_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.