ABAP Select data from SAP table MPLAN_MMPT into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP MPLAN_MMPT 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_MMPT. 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_MMPT 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_MMPT TYPE STANDARD TABLE OF MPLAN_MMPT,
      WA_MPLAN_MMPT TYPE MPLAN_MMPT,
      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_MMPT> TYPE MPLAN_MMPT.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM MPLAN_MMPT
*  INTO TABLE @DATA(IT_MPLAN_MMPT2).
*--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_MMPT INDEX 1 INTO DATA(WA_MPLAN_MMPT2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<MPLAN_MMPT>-ACTION = 1.
<MPLAN_MMPT>-UPD_KNZ = 1.
<MPLAN_MMPT>-MANDT = 1.
<MPLAN_MMPT>-WARPL = 1.
<MPLAN_MMPT>-NUMMER = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_MPLAN_MMPT-OPERATOR, sy-vline,
  WA_MPLAN_MMPT-ZYKL1, sy-vline,
  WA_MPLAN_MMPT-ZEIEH, sy-vline,
  WA_MPLAN_MMPT-PAK_TEXT, sy-vline,
  WA_MPLAN_MMPT-LANGU, sy-vline,
  WA_MPLAN_MMPT-POINT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_MPLAN_MMPT 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_MMPT 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_MMPT INTO WA_MPLAN_MMPT.


*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_MMPT-WARPL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MPLAN_MMPT-WARPL.
WRITE:/ 'New Value:', ld_input.

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

*Conversion exit ISOLA, internal->external for field LANGU
CALL FUNCTION 'CONVERSION_EXIT_ISOLA_OUTPUT'
  EXPORTING
    input =                      WA_MPLAN_MMPT-LANGU
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MPLAN_MMPT-LANGU.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field POINT
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_MPLAN_MMPT-POINT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MPLAN_MMPT-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_MMPT_STR, 
ACTION TYPE STRING,
UPD_KNZ TYPE STRING,
MANDT TYPE STRING,
WARPL TYPE STRING,
NUMMER TYPE STRING,
OPERATOR TYPE STRING,
ZYKL1 TYPE STRING,
ZEIEH TYPE STRING,
PAK_TEXT TYPE STRING,
LANGU TYPE STRING,
POINT TYPE STRING,
OFFSET TYPE STRING,
INAKTIV TYPE STRING,
NZAEH TYPE STRING,
ZAEHL TYPE STRING,
KTEXTYZK TYPE STRING,
CYCLESEQIND TYPE STRING,
SETREPEATIND TYPE STRING,END OF T_EKKO_STR.
DATA: WA_MPLAN_MMPT_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_MMPT_STR-ACTION sy-vline 
WA_MPLAN_MMPT_STR-UPD_KNZ sy-vline 
WA_MPLAN_MMPT_STR-MANDT sy-vline 
WA_MPLAN_MMPT_STR-WARPL sy-vline 
WA_MPLAN_MMPT_STR-NUMMER sy-vline 
WA_MPLAN_MMPT_STR-OPERATOR sy-vline 
WA_MPLAN_MMPT_STR-ZYKL1 sy-vline 
WA_MPLAN_MMPT_STR-ZEIEH sy-vline 
WA_MPLAN_MMPT_STR-PAK_TEXT sy-vline 
WA_MPLAN_MMPT_STR-LANGU sy-vline 
WA_MPLAN_MMPT_STR-POINT sy-vline 
WA_MPLAN_MMPT_STR-OFFSET sy-vline 
WA_MPLAN_MMPT_STR-INAKTIV sy-vline 
WA_MPLAN_MMPT_STR-NZAEH sy-vline 
WA_MPLAN_MMPT_STR-ZAEHL sy-vline 
WA_MPLAN_MMPT_STR-KTEXTYZK sy-vline 
WA_MPLAN_MMPT_STR-CYCLESEQIND sy-vline 
WA_MPLAN_MMPT_STR-SETREPEATIND sy-vline      INTO ld_text SEPARATED BY SPACE.

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