ABAP Select data from SAP table /PLMI/S_MRCP_PI_ADD into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP /PLMI/S_MRCP_PI_ADD 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 /PLMI/S_MRCP_PI_ADD. 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 /PLMI/S_MRCP_PI_ADD 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_/PLMI/S_MRCP_PI_ADD TYPE STANDARD TABLE OF /PLMI/S_MRCP_PI_ADD,
      WA_/PLMI/S_MRCP_PI_ADD TYPE /PLMI/S_MRCP_PI_ADD,
      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: </PLMI/S_MRCP_PI_ADD> TYPE /PLMI/S_MRCP_PI_ADD.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM /PLMI/S_MRCP_PI_ADD
*  INTO TABLE @DATA(IT_/PLMI/S_MRCP_PI_ADD2).
*--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_/PLMI/S_MRCP_PI_ADD INDEX 1 INTO DATA(WA_/PLMI/S_MRCP_PI_ADD2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
</PLMI/S_MRCP_PI_ADD>-PLNAL = 1.
</PLMI/S_MRCP_PI_ADD>-SIBLING = 1.
</PLMI/S_MRCP_PI_ADD>-FLG_SEL = 1.
</PLMI/S_MRCP_PI_ADD>-MANDT = 1.
</PLMI/S_MRCP_PI_ADD>-PLNTY = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_/PLMI/S_MRCP_PI_ADD-PLNNR, sy-vline,
  WA_/PLMI/S_MRCP_PI_ADD-PLNKN, sy-vline,
  WA_/PLMI/S_MRCP_PI_ADD-PLNPH, sy-vline,
  WA_/PLMI/S_MRCP_PI_ADD-PLNFT, sy-vline,
  WA_/PLMI/S_MRCP_PI_ADD-ZAEHL, sy-vline,
  WA_/PLMI/S_MRCP_PI_ADD-DATUV, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_/PLMI/S_MRCP_PI_ADD 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_/PLMI/S_MRCP_PI_ADD 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_/PLMI/S_MRCP_PI_ADD INTO WA_/PLMI/S_MRCP_PI_ADD.


*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 PLNAL
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_/PLMI/S_MRCP_PI_ADD-PLNAL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/PLMI/S_MRCP_PI_ADD-PLNAL.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field PLNNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_/PLMI/S_MRCP_PI_ADD-PLNNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/PLMI/S_MRCP_PI_ADD-PLNNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field AENNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_/PLMI/S_MRCP_PI_ADD-AENNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/PLMI/S_MRCP_PI_ADD-AENNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit NUMCV, internal->external for field FTRNR
CALL FUNCTION 'CONVERSION_EXIT_NUMCV_OUTPUT'
  EXPORTING
    input =                      WA_/PLMI/S_MRCP_PI_ADD-FTRNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/PLMI/S_MRCP_PI_ADD-FTRNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field AENNR_AUS
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_/PLMI/S_MRCP_PI_ADD-AENNR_AUS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/PLMI/S_MRCP_PI_ADD-AENNR_AUS.
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_/PLMI/S_MRCP_PI_ADD_STR, 
PLNAL TYPE STRING,
SIBLING TYPE STRING,
FLG_SEL TYPE STRING,
MANDT TYPE STRING,
PLNTY TYPE STRING,
PLNNR TYPE STRING,
PLNKN TYPE STRING,
PLNPH TYPE STRING,
PLNFT TYPE STRING,
ZAEHL TYPE STRING,
DATUV TYPE STRING,
LOEKZ TYPE STRING,
AENNR TYPE STRING,
ANDAT TYPE STRING,
ANNAM TYPE STRING,
AEDAT TYPE STRING,
AENAM TYPE STRING,
WERKS TYPE STRING,
FTRNR TYPE STRING,
CSTYP TYPE STRING,
COSTR TYPE STRING,
CSKTX TYPE STRING,
FTTYP TYPE STRING,
VALID_TO TYPE STRING,
LOEKZ_INHERITED TYPE STRING,
VBKZ TYPE STRING,
DATUB TYPE STRING,
AENNR_AUS TYPE STRING,END OF T_EKKO_STR.
DATA: WA_/PLMI/S_MRCP_PI_ADD_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_/PLMI/S_MRCP_PI_ADD_STR-PLNAL sy-vline 
WA_/PLMI/S_MRCP_PI_ADD_STR-SIBLING sy-vline 
WA_/PLMI/S_MRCP_PI_ADD_STR-FLG_SEL sy-vline 
WA_/PLMI/S_MRCP_PI_ADD_STR-MANDT sy-vline 
WA_/PLMI/S_MRCP_PI_ADD_STR-PLNTY sy-vline 
WA_/PLMI/S_MRCP_PI_ADD_STR-PLNNR sy-vline 
WA_/PLMI/S_MRCP_PI_ADD_STR-PLNKN sy-vline 
WA_/PLMI/S_MRCP_PI_ADD_STR-PLNPH sy-vline 
WA_/PLMI/S_MRCP_PI_ADD_STR-PLNFT sy-vline 
WA_/PLMI/S_MRCP_PI_ADD_STR-ZAEHL sy-vline 
WA_/PLMI/S_MRCP_PI_ADD_STR-DATUV sy-vline 
WA_/PLMI/S_MRCP_PI_ADD_STR-LOEKZ sy-vline 
WA_/PLMI/S_MRCP_PI_ADD_STR-AENNR sy-vline 
WA_/PLMI/S_MRCP_PI_ADD_STR-ANDAT sy-vline 
WA_/PLMI/S_MRCP_PI_ADD_STR-ANNAM sy-vline 
WA_/PLMI/S_MRCP_PI_ADD_STR-AEDAT sy-vline 
WA_/PLMI/S_MRCP_PI_ADD_STR-AENAM sy-vline 
WA_/PLMI/S_MRCP_PI_ADD_STR-WERKS sy-vline 
WA_/PLMI/S_MRCP_PI_ADD_STR-FTRNR sy-vline 
WA_/PLMI/S_MRCP_PI_ADD_STR-CSTYP sy-vline 
WA_/PLMI/S_MRCP_PI_ADD_STR-COSTR sy-vline 
WA_/PLMI/S_MRCP_PI_ADD_STR-CSKTX sy-vline 
WA_/PLMI/S_MRCP_PI_ADD_STR-FTTYP sy-vline 
WA_/PLMI/S_MRCP_PI_ADD_STR-VALID_TO sy-vline 
WA_/PLMI/S_MRCP_PI_ADD_STR-LOEKZ_INHERITED sy-vline 
WA_/PLMI/S_MRCP_PI_ADD_STR-VBKZ sy-vline 
WA_/PLMI/S_MRCP_PI_ADD_STR-DATUB sy-vline 
WA_/PLMI/S_MRCP_PI_ADD_STR-AENNR_AUS sy-vline      INTO ld_text SEPARATED BY SPACE.

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