ABAP Select data from SAP table /MRSS/T_RM_PRCT2 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP /MRSS/T_RM_PRCT2 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 /MRSS/T_RM_PRCT2. 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 /MRSS/T_RM_PRCT2 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_/MRSS/T_RM_PRCT2 TYPE STANDARD TABLE OF /MRSS/T_RM_PRCT2,
      WA_/MRSS/T_RM_PRCT2 TYPE /MRSS/T_RM_PRCT2,
      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: </MRSS/T_RM_PRCT2> TYPE /MRSS/T_RM_PRCT2.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_/MRSS/T_RM_PRCT2.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM /MRSS/T_RM_PRCT2
  INTO TABLE IT_/MRSS/T_RM_PRCT2.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM /MRSS/T_RM_PRCT2
*  INTO TABLE @DATA(IT_/MRSS/T_RM_PRCT22).
*--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_/MRSS/T_RM_PRCT2 INDEX 1 INTO DATA(WA_/MRSS/T_RM_PRCT22).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_/MRSS/T_RM_PRCT2 ASSIGNING </MRSS/T_RM_PRCT2>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
</MRSS/T_RM_PRCT2>-MANDT = 1.
</MRSS/T_RM_PRCT2>-PRCTR = 1.
</MRSS/T_RM_PRCT2>-DATBI = 1.
</MRSS/T_RM_PRCT2>-STATUS = 1.
</MRSS/T_RM_PRCT2>-DATAB = 1.

ENDLOOP.

LOOP AT IT_/MRSS/T_RM_PRCT2 INTO WA_/MRSS/T_RM_PRCT2.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_/MRSS/T_RM_PRCT2-ERSDA, sy-vline,
  WA_/MRSS/T_RM_PRCT2-USNAM, sy-vline,
  WA_/MRSS/T_RM_PRCT2-MERKMAL, sy-vline,
  WA_/MRSS/T_RM_PRCT2-ABTEI, sy-vline,
  WA_/MRSS/T_RM_PRCT2-VERAK, sy-vline,
  WA_/MRSS/T_RM_PRCT2-VERAK_USER, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_/MRSS/T_RM_PRCT2 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_/MRSS/T_RM_PRCT2 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_/MRSS/T_RM_PRCT2 INTO WA_/MRSS/T_RM_PRCT2.


*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 PRCTR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_/MRSS/T_RM_PRCT2-PRCTR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/MRSS/T_RM_PRCT2-PRCTR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field NPRCTR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_/MRSS/T_RM_PRCT2-NPRCTR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/MRSS/T_RM_PRCT2-NPRCTR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ISOLA, internal->external for field SPRAS
CALL FUNCTION 'CONVERSION_EXIT_ISOLA_OUTPUT'
  EXPORTING
    input =                      WA_/MRSS/T_RM_PRCT2-SPRAS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/MRSS/T_RM_PRCT2-SPRAS.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field VNAME
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_/MRSS/T_RM_PRCT2-VNAME
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/MRSS/T_RM_PRCT2-VNAME.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field RECID
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_/MRSS/T_RM_PRCT2-RECID
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/MRSS/T_RM_PRCT2-RECID.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field ETYPE
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_/MRSS/T_RM_PRCT2-ETYPE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/MRSS/T_RM_PRCT2-ETYPE.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field LOGSYSTEM
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_/MRSS/T_RM_PRCT2-LOGSYSTEM
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/MRSS/T_RM_PRCT2-LOGSYSTEM.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ISOLA, internal->external for field SPRAS2
CALL FUNCTION 'CONVERSION_EXIT_ISOLA_OUTPUT'
  EXPORTING
    input =                      WA_/MRSS/T_RM_PRCT2-SPRAS2
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/MRSS/T_RM_PRCT2-SPRAS2.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field SEGMENT
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_/MRSS/T_RM_PRCT2-SEGMENT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/MRSS/T_RM_PRCT2-SEGMENT.
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_/MRSS/T_RM_PRCT2_STR, 
MANDT TYPE STRING,
PRCTR TYPE STRING,
DATBI TYPE STRING,
STATUS TYPE STRING,
DATAB TYPE STRING,
ERSDA TYPE STRING,
USNAM TYPE STRING,
MERKMAL TYPE STRING,
ABTEI TYPE STRING,
VERAK TYPE STRING,
VERAK_USER TYPE STRING,
WAERS TYPE STRING,
NPRCTR TYPE STRING,
LAND1 TYPE STRING,
ANRED TYPE STRING,
NAME1 TYPE STRING,
NAME2 TYPE STRING,
NAME3 TYPE STRING,
NAME4 TYPE STRING,
ORT01 TYPE STRING,
ORT02 TYPE STRING,
STRAS TYPE STRING,
PFACH TYPE STRING,
PSTLZ TYPE STRING,
PSTL2 TYPE STRING,
SPRAS TYPE STRING,
TELBX TYPE STRING,
TELF1 TYPE STRING,
TELF2 TYPE STRING,
TELFX TYPE STRING,
TELTX TYPE STRING,
TELX1 TYPE STRING,
DATLT TYPE STRING,
DRNAM TYPE STRING,
KOKRS TYPE STRING,
KHINR TYPE STRING,
KTEXT TYPE STRING,
STEXT TYPE STRING,
LTEXT TYPE STRING,
BUKRS TYPE STRING,
VNAME TYPE STRING,
RECID TYPE STRING,
ETYPE TYPE STRING,
TXJCD TYPE STRING,
REGIO TYPE STRING,
BUTXT TYPE STRING,
T8JVT_TEXT TYPE STRING,
T8JJT_TEXT TYPE STRING,
T8JET_TEXT TYPE STRING,
KVEWE TYPE STRING,
KAPPL TYPE STRING,
KALSM TYPE STRING,
LOGSYSTEM TYPE STRING,
LOCK_IND TYPE STRING,
PCA_TEMPLATE TYPE STRING,
SPRAS2 TYPE STRING,
SEGMENT TYPE STRING,
VERAK_USER_TEXT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_/MRSS/T_RM_PRCT2_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_/MRSS/T_RM_PRCT2_STR-MANDT sy-vline 
WA_/MRSS/T_RM_PRCT2_STR-PRCTR sy-vline 
WA_/MRSS/T_RM_PRCT2_STR-DATBI sy-vline 
WA_/MRSS/T_RM_PRCT2_STR-STATUS sy-vline 
WA_/MRSS/T_RM_PRCT2_STR-DATAB sy-vline 
WA_/MRSS/T_RM_PRCT2_STR-ERSDA sy-vline 
WA_/MRSS/T_RM_PRCT2_STR-USNAM sy-vline 
WA_/MRSS/T_RM_PRCT2_STR-MERKMAL sy-vline 
WA_/MRSS/T_RM_PRCT2_STR-ABTEI sy-vline 
WA_/MRSS/T_RM_PRCT2_STR-VERAK sy-vline 
WA_/MRSS/T_RM_PRCT2_STR-VERAK_USER sy-vline 
WA_/MRSS/T_RM_PRCT2_STR-WAERS sy-vline 
WA_/MRSS/T_RM_PRCT2_STR-NPRCTR sy-vline 
WA_/MRSS/T_RM_PRCT2_STR-LAND1 sy-vline 
WA_/MRSS/T_RM_PRCT2_STR-ANRED sy-vline 
WA_/MRSS/T_RM_PRCT2_STR-NAME1 sy-vline 
WA_/MRSS/T_RM_PRCT2_STR-NAME2 sy-vline 
WA_/MRSS/T_RM_PRCT2_STR-NAME3 sy-vline 
WA_/MRSS/T_RM_PRCT2_STR-NAME4 sy-vline 
WA_/MRSS/T_RM_PRCT2_STR-ORT01 sy-vline 
WA_/MRSS/T_RM_PRCT2_STR-ORT02 sy-vline 
WA_/MRSS/T_RM_PRCT2_STR-STRAS sy-vline 
WA_/MRSS/T_RM_PRCT2_STR-PFACH sy-vline 
WA_/MRSS/T_RM_PRCT2_STR-PSTLZ sy-vline 
WA_/MRSS/T_RM_PRCT2_STR-PSTL2 sy-vline 
WA_/MRSS/T_RM_PRCT2_STR-SPRAS sy-vline 
WA_/MRSS/T_RM_PRCT2_STR-TELBX sy-vline 
WA_/MRSS/T_RM_PRCT2_STR-TELF1 sy-vline 
WA_/MRSS/T_RM_PRCT2_STR-TELF2 sy-vline 
WA_/MRSS/T_RM_PRCT2_STR-TELFX sy-vline 
WA_/MRSS/T_RM_PRCT2_STR-TELTX sy-vline 
WA_/MRSS/T_RM_PRCT2_STR-TELX1 sy-vline 
WA_/MRSS/T_RM_PRCT2_STR-DATLT sy-vline 
WA_/MRSS/T_RM_PRCT2_STR-DRNAM sy-vline 
WA_/MRSS/T_RM_PRCT2_STR-KOKRS sy-vline 
WA_/MRSS/T_RM_PRCT2_STR-KHINR sy-vline 
WA_/MRSS/T_RM_PRCT2_STR-KTEXT sy-vline 
WA_/MRSS/T_RM_PRCT2_STR-STEXT sy-vline 
WA_/MRSS/T_RM_PRCT2_STR-LTEXT sy-vline 
WA_/MRSS/T_RM_PRCT2_STR-BUKRS sy-vline 
WA_/MRSS/T_RM_PRCT2_STR-VNAME sy-vline 
WA_/MRSS/T_RM_PRCT2_STR-RECID sy-vline 
WA_/MRSS/T_RM_PRCT2_STR-ETYPE sy-vline 
WA_/MRSS/T_RM_PRCT2_STR-TXJCD sy-vline 
WA_/MRSS/T_RM_PRCT2_STR-REGIO sy-vline 
WA_/MRSS/T_RM_PRCT2_STR-BUTXT sy-vline 
WA_/MRSS/T_RM_PRCT2_STR-T8JVT_TEXT sy-vline 
WA_/MRSS/T_RM_PRCT2_STR-T8JJT_TEXT sy-vline 
WA_/MRSS/T_RM_PRCT2_STR-T8JET_TEXT sy-vline 
WA_/MRSS/T_RM_PRCT2_STR-KVEWE sy-vline 
WA_/MRSS/T_RM_PRCT2_STR-KAPPL sy-vline 
WA_/MRSS/T_RM_PRCT2_STR-KALSM sy-vline 
WA_/MRSS/T_RM_PRCT2_STR-LOGSYSTEM sy-vline 
WA_/MRSS/T_RM_PRCT2_STR-LOCK_IND sy-vline 
WA_/MRSS/T_RM_PRCT2_STR-PCA_TEMPLATE sy-vline 
WA_/MRSS/T_RM_PRCT2_STR-SPRAS2 sy-vline 
WA_/MRSS/T_RM_PRCT2_STR-SEGMENT sy-vline 
WA_/MRSS/T_RM_PRCT2_STR-VERAK_USER_TEXT sy-vline      INTO ld_text SEPARATED BY SPACE.

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