ABAP Select data from SAP table MSSXPLPLAN into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM MSSXPLPLAN
*  INTO TABLE @DATA(IT_MSSXPLPLAN2).
*--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_MSSXPLPLAN INDEX 1 INTO DATA(WA_MSSXPLPLAN2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<MSSXPLPLAN>-STMTTEXT = 1.
<MSSXPLPLAN>-STMTID = 1.
<MSSXPLPLAN>-NODEID = 1.
<MSSXPLPLAN>-PARENT = 1.
<MSSXPLPLAN>-PHYSICALOP = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_MSSXPLPLAN-LOGICALOP, sy-vline,
  WA_MSSXPLPLAN-ARG, sy-vline,
  WA_MSSXPLPLAN-DEFVAL, sy-vline,
  WA_MSSXPLPLAN-ESTROWS, sy-vline,
  WA_MSSXPLPLAN-ESTIO, sy-vline,
  WA_MSSXPLPLAN-ESTCPU, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_MSSXPLPLAN 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_MSSXPLPLAN 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_MSSXPLPLAN INTO WA_MSSXPLPLAN.


*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.
ENDFORM. 

*&---------------------------------------------------------------------*
*& Form process_as_string_field_values
*&---------------------------------------------------------------------*
FORM process_as_string_field_values CHANGING p_EKKO LIKE wa_EKKO.

TYPES: BEGIN OF T_MSSXPLPLAN_STR, 
STMTTEXT TYPE STRING,
STMTID TYPE STRING,
NODEID TYPE STRING,
PARENT TYPE STRING,
PHYSICALOP TYPE STRING,
LOGICALOP TYPE STRING,
ARG TYPE STRING,
DEFVAL TYPE STRING,
ESTROWS TYPE STRING,
ESTIO TYPE STRING,
ESTCPU TYPE STRING,
AVGROWSZ TYPE STRING,
TOTSUBTREECO TYPE STRING,
OUTPUTLIST TYPE STRING,
WARNINGS TYPE STRING,
OPTYPE TYPE STRING,
PARALLEL TYPE STRING,
ESTEXECS TYPE STRING,END OF T_EKKO_STR.
DATA: WA_MSSXPLPLAN_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_MSSXPLPLAN_STR-STMTTEXT sy-vline 
WA_MSSXPLPLAN_STR-STMTID sy-vline 
WA_MSSXPLPLAN_STR-NODEID sy-vline 
WA_MSSXPLPLAN_STR-PARENT sy-vline 
WA_MSSXPLPLAN_STR-PHYSICALOP sy-vline 
WA_MSSXPLPLAN_STR-LOGICALOP sy-vline 
WA_MSSXPLPLAN_STR-ARG sy-vline 
WA_MSSXPLPLAN_STR-DEFVAL sy-vline 
WA_MSSXPLPLAN_STR-ESTROWS sy-vline 
WA_MSSXPLPLAN_STR-ESTIO sy-vline 
WA_MSSXPLPLAN_STR-ESTCPU sy-vline 
WA_MSSXPLPLAN_STR-AVGROWSZ sy-vline 
WA_MSSXPLPLAN_STR-TOTSUBTREECO sy-vline 
WA_MSSXPLPLAN_STR-OUTPUTLIST sy-vline 
WA_MSSXPLPLAN_STR-WARNINGS sy-vline 
WA_MSSXPLPLAN_STR-OPTYPE sy-vline 
WA_MSSXPLPLAN_STR-PARALLEL sy-vline 
WA_MSSXPLPLAN_STR-ESTEXECS sy-vline      INTO ld_text SEPARATED BY SPACE.

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