ABAP Select data from SAP table ITRPCOSTMMTP into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM ITRPCOSTMMTP
*  INTO TABLE @DATA(IT_ITRPCOSTMMTP2).
*--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_ITRPCOSTMMTP INDEX 1 INTO DATA(WA_ITRPCOSTMMTP2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<ITRPCOSTMMTP>-MANDT = 1.
<ITRPCOSTMMTP>-TRIPDOC = 1.
<ITRPCOSTMMTP>-TRIPDOCITEM = 1.
<ITRPCOSTMMTP>-DEMURRAGECHARGEKEY = 1.
<ITRPCOSTMMTP>-SEQUENCENUMBER = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_ITRPCOSTMMTP-ASSET, sy-vline,
  WA_ITRPCOSTMMTP-NETWORKNAME, sy-vline,
  WA_ITRPCOSTMMTP-COSTCENTER, sy-vline,
  WA_ITRPCOSTMMTP-WBSELEMENT, sy-vline,
  WA_ITRPCOSTMMTP-ORDERID, sy-vline,
  WA_ITRPCOSTMMTP-ORDERITEM, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_ITRPCOSTMMTP 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_ITRPCOSTMMTP 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_ITRPCOSTMMTP INTO WA_ITRPCOSTMMTP.


*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 TRIPDOC
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_ITRPCOSTMMTP-TRIPDOC
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ITRPCOSTMMTP-TRIPDOC.
WRITE:/ 'New Value:', ld_input.

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

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

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

*Conversion exit ABPSP, internal->external for field WBSELEMENT
CALL FUNCTION 'CONVERSION_EXIT_ABPSP_OUTPUT'
  EXPORTING
    input =                      WA_ITRPCOSTMMTP-WBSELEMENT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ITRPCOSTMMTP-WBSELEMENT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field ORDERID
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_ITRPCOSTMMTP-ORDERID
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ITRPCOSTMMTP-ORDERID.
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_ITRPCOSTMMTP_STR, 
MANDT TYPE STRING,
TRIPDOC TYPE STRING,
TRIPDOCITEM TYPE STRING,
DEMURRAGECHARGEKEY TYPE STRING,
SEQUENCENUMBER TYPE STRING,
ASSET TYPE STRING,
NETWORKNAME TYPE STRING,
COSTCENTER TYPE STRING,
WBSELEMENT TYPE STRING,
ORDERID TYPE STRING,
ORDERITEM TYPE STRING,END OF T_EKKO_STR.
DATA: WA_ITRPCOSTMMTP_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_ITRPCOSTMMTP_STR-MANDT sy-vline 
WA_ITRPCOSTMMTP_STR-TRIPDOC sy-vline 
WA_ITRPCOSTMMTP_STR-TRIPDOCITEM sy-vline 
WA_ITRPCOSTMMTP_STR-DEMURRAGECHARGEKEY sy-vline 
WA_ITRPCOSTMMTP_STR-SEQUENCENUMBER sy-vline 
WA_ITRPCOSTMMTP_STR-ASSET sy-vline 
WA_ITRPCOSTMMTP_STR-NETWORKNAME sy-vline 
WA_ITRPCOSTMMTP_STR-COSTCENTER sy-vline 
WA_ITRPCOSTMMTP_STR-WBSELEMENT sy-vline 
WA_ITRPCOSTMMTP_STR-ORDERID sy-vline 
WA_ITRPCOSTMMTP_STR-ORDERITEM sy-vline      INTO ld_text SEPARATED BY SPACE.

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