ABAP Select data from SAP table /ISDFPS/ME_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 /ISDFPS/ME_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 /ISDFPS/ME_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 /ISDFPS/ME_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_/ISDFPS/ME_MPLAN_MMPT TYPE STANDARD TABLE OF /ISDFPS/ME_MPLAN_MMPT,
      WA_/ISDFPS/ME_MPLAN_MMPT TYPE /ISDFPS/ME_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: </ISDFPS/ME_MPLAN_MMPT> TYPE /ISDFPS/ME_MPLAN_MMPT.

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

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM /ISDFPS/ME_MPLAN_MMPT
  INTO TABLE IT_/ISDFPS/ME_MPLAN_MMPT.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM /ISDFPS/ME_MPLAN_MMPT
*  INTO TABLE @DATA(IT_/ISDFPS/ME_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_/ISDFPS/ME_MPLAN_MMPT INDEX 1 INTO DATA(WA_/ISDFPS/ME_MPLAN_MMPT2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_/ISDFPS/ME_MPLAN_MMPT ASSIGNING </ISDFPS/ME_MPLAN_MMPT>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
</ISDFPS/ME_MPLAN_MMPT>-ACTION = 1.
</ISDFPS/ME_MPLAN_MMPT>-UPD_KNZ = 1.
</ISDFPS/ME_MPLAN_MMPT>-WARPL = 1.
</ISDFPS/ME_MPLAN_MMPT>-NUMMER = 1.
</ISDFPS/ME_MPLAN_MMPT>-OPERATOR = 1.

ENDLOOP.

LOOP AT IT_/ISDFPS/ME_MPLAN_MMPT INTO WA_/ISDFPS/ME_MPLAN_MMPT.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_/ISDFPS/ME_MPLAN_MMPT-ZYKL1, sy-vline,
  WA_/ISDFPS/ME_MPLAN_MMPT-ZEIEH, sy-vline,
  WA_/ISDFPS/ME_MPLAN_MMPT-PAK_TEXT, sy-vline,
  WA_/ISDFPS/ME_MPLAN_MMPT-SPRAS, sy-vline,
  WA_/ISDFPS/ME_MPLAN_MMPT-POINT, sy-vline,
  WA_/ISDFPS/ME_MPLAN_MMPT-OFFSET, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_/ISDFPS/ME_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_/ISDFPS/ME_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_/ISDFPS/ME_MPLAN_MMPT INTO WA_/ISDFPS/ME_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_/ISDFPS/ME_MPLAN_MMPT-WARPL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/ISDFPS/ME_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_/ISDFPS/ME_MPLAN_MMPT-ZEIEH
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/ISDFPS/ME_MPLAN_MMPT-ZEIEH.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field POINT
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_/ISDFPS/ME_MPLAN_MMPT-POINT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/ISDFPS/ME_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_/ISDFPS/ME_MPLAN_MMPT_STR, 
ACTION TYPE STRING,
UPD_KNZ TYPE STRING,
WARPL TYPE STRING,
NUMMER TYPE STRING,
OPERATOR TYPE STRING,
ZYKL1 TYPE STRING,
ZEIEH TYPE STRING,
PAK_TEXT TYPE STRING,
SPRAS 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_/ISDFPS/ME_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_/ISDFPS/ME_MPLAN_MMPT_STR-ACTION sy-vline 
WA_/ISDFPS/ME_MPLAN_MMPT_STR-UPD_KNZ sy-vline 
WA_/ISDFPS/ME_MPLAN_MMPT_STR-WARPL sy-vline 
WA_/ISDFPS/ME_MPLAN_MMPT_STR-NUMMER sy-vline 
WA_/ISDFPS/ME_MPLAN_MMPT_STR-OPERATOR sy-vline 
WA_/ISDFPS/ME_MPLAN_MMPT_STR-ZYKL1 sy-vline 
WA_/ISDFPS/ME_MPLAN_MMPT_STR-ZEIEH sy-vline 
WA_/ISDFPS/ME_MPLAN_MMPT_STR-PAK_TEXT sy-vline 
WA_/ISDFPS/ME_MPLAN_MMPT_STR-SPRAS sy-vline 
WA_/ISDFPS/ME_MPLAN_MMPT_STR-POINT sy-vline 
WA_/ISDFPS/ME_MPLAN_MMPT_STR-OFFSET sy-vline 
WA_/ISDFPS/ME_MPLAN_MMPT_STR-INAKTIV sy-vline 
WA_/ISDFPS/ME_MPLAN_MMPT_STR-NZAEH sy-vline 
WA_/ISDFPS/ME_MPLAN_MMPT_STR-ZAEHL sy-vline 
WA_/ISDFPS/ME_MPLAN_MMPT_STR-KTEXTYZK sy-vline 
WA_/ISDFPS/ME_MPLAN_MMPT_STR-CYCLESEQIND sy-vline 
WA_/ISDFPS/ME_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.