ABAP Select data from SAP table /PLMI/S_GSS_MR_STRUC_ID_PARAM 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_GSS_MR_STRUC_ID_PARAM 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_GSS_MR_STRUC_ID_PARAM. 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_GSS_MR_STRUC_ID_PARAM 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_GSS_MR_STRUC_ID_PARAM TYPE STANDARD TABLE OF /PLMI/S_GSS_MR_STRUC_ID_PARAM,
      WA_/PLMI/S_GSS_MR_STRUC_ID_PARAM TYPE /PLMI/S_GSS_MR_STRUC_ID_PARAM,
      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_GSS_MR_STRUC_ID_PARAM> TYPE /PLMI/S_GSS_MR_STRUC_ID_PARAM.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM /PLMI/S_GSS_MR_STRUC_ID_PARAM
*  INTO TABLE @DATA(IT_/PLMI/S_GSS_MR_STRUC_ID_PARAM2).
*--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_GSS_MR_STRUC_ID_PARAM INDEX 1 INTO DATA(WA_/PLMI/S_GSS_MR_STRUC_ID_PARAM2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
</PLMI/S_GSS_MR_STRUC_ID_PARAM>-VALID_FROM_DATE = 1.
</PLMI/S_GSS_MR_STRUC_ID_PARAM>-CHANGE_NO = 1.
</PLMI/S_GSS_MR_STRUC_ID_PARAM>-MR_STATUS = 1.
</PLMI/S_GSS_MR_STRUC_ID_PARAM>-MR_USAGE = 1.
</PLMI/S_GSS_MR_STRUC_ID_PARAM>-MR_CRD = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_/PLMI/S_GSS_MR_STRUC_ID_PARAM-MR_PI_CAT, sy-vline,
  WA_/PLMI/S_GSS_MR_STRUC_ID_PARAM-MR_PROFILE, sy-vline,
  WA_/PLMI/S_GSS_MR_STRUC_ID_PARAM-VERID, sy-vline,
  WA_/PLMI/S_GSS_MR_STRUC_ID_PARAM-MATNR, sy-vline,
  WA_/PLMI/S_GSS_MR_STRUC_ID_PARAM-WERKS, sy-vline,
  WA_/PLMI/S_GSS_MR_STRUC_ID_PARAM-STLAN, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_/PLMI/S_GSS_MR_STRUC_ID_PARAM 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_GSS_MR_STRUC_ID_PARAM 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_GSS_MR_STRUC_ID_PARAM INTO WA_/PLMI/S_GSS_MR_STRUC_ID_PARAM.


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

*Conversion exit MATN1, internal->external for field MATNR
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_/PLMI/S_GSS_MR_STRUC_ID_PARAM-MATNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/PLMI/S_GSS_MR_STRUC_ID_PARAM-MATNR.
WRITE:/ 'New Value:', ld_input.

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

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

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

*Conversion exit CUNIT, internal->external for field MEINH
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_/PLMI/S_GSS_MR_STRUC_ID_PARAM-MEINH
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/PLMI/S_GSS_MR_STRUC_ID_PARAM-MEINH.
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_GSS_MR_STRUC_ID_PARAM_STR, 
VALID_FROM_DATE TYPE STRING,
CHANGE_NO TYPE STRING,
MR_STATUS TYPE STRING,
MR_USAGE TYPE STRING,
MR_CRD TYPE STRING,
MR_PI_CAT TYPE STRING,
MR_PROFILE TYPE STRING,
VERID TYPE STRING,
MATNR TYPE STRING,
WERKS TYPE STRING,
STLAN TYPE STRING,
STALT TYPE STRING,
BMSCH TYPE STRING,
DAUNE TYPE STRING,
BUKRS TYPE STRING,
STEUS TYPE STRING,
UMREN TYPE STRING,
UMREZ TYPE STRING,
LOSVN TYPE STRING,
LOSBS TYPE STRING,
BASE_UNIT TYPE STRING,
MEINH TYPE STRING,
BASE_QTY TYPE STRING,
KALID TYPE STRING,
CHRULE TYPE STRING,
CCOAA TYPE STRING,END OF T_EKKO_STR.
DATA: WA_/PLMI/S_GSS_MR_STRUC_ID_PARAM_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_GSS_MR_STRUC_ID_PARAM_STR-VALID_FROM_DATE sy-vline 
WA_/PLMI/S_GSS_MR_STRUC_ID_PARAM_STR-CHANGE_NO sy-vline 
WA_/PLMI/S_GSS_MR_STRUC_ID_PARAM_STR-MR_STATUS sy-vline 
WA_/PLMI/S_GSS_MR_STRUC_ID_PARAM_STR-MR_USAGE sy-vline 
WA_/PLMI/S_GSS_MR_STRUC_ID_PARAM_STR-MR_CRD sy-vline 
WA_/PLMI/S_GSS_MR_STRUC_ID_PARAM_STR-MR_PI_CAT sy-vline 
WA_/PLMI/S_GSS_MR_STRUC_ID_PARAM_STR-MR_PROFILE sy-vline 
WA_/PLMI/S_GSS_MR_STRUC_ID_PARAM_STR-VERID sy-vline 
WA_/PLMI/S_GSS_MR_STRUC_ID_PARAM_STR-MATNR sy-vline 
WA_/PLMI/S_GSS_MR_STRUC_ID_PARAM_STR-WERKS sy-vline 
WA_/PLMI/S_GSS_MR_STRUC_ID_PARAM_STR-STLAN sy-vline 
WA_/PLMI/S_GSS_MR_STRUC_ID_PARAM_STR-STALT sy-vline 
WA_/PLMI/S_GSS_MR_STRUC_ID_PARAM_STR-BMSCH sy-vline 
WA_/PLMI/S_GSS_MR_STRUC_ID_PARAM_STR-DAUNE sy-vline 
WA_/PLMI/S_GSS_MR_STRUC_ID_PARAM_STR-BUKRS sy-vline 
WA_/PLMI/S_GSS_MR_STRUC_ID_PARAM_STR-STEUS sy-vline 
WA_/PLMI/S_GSS_MR_STRUC_ID_PARAM_STR-UMREN sy-vline 
WA_/PLMI/S_GSS_MR_STRUC_ID_PARAM_STR-UMREZ sy-vline 
WA_/PLMI/S_GSS_MR_STRUC_ID_PARAM_STR-LOSVN sy-vline 
WA_/PLMI/S_GSS_MR_STRUC_ID_PARAM_STR-LOSBS sy-vline 
WA_/PLMI/S_GSS_MR_STRUC_ID_PARAM_STR-BASE_UNIT sy-vline 
WA_/PLMI/S_GSS_MR_STRUC_ID_PARAM_STR-MEINH sy-vline 
WA_/PLMI/S_GSS_MR_STRUC_ID_PARAM_STR-BASE_QTY sy-vline 
WA_/PLMI/S_GSS_MR_STRUC_ID_PARAM_STR-KALID sy-vline 
WA_/PLMI/S_GSS_MR_STRUC_ID_PARAM_STR-CHRULE sy-vline 
WA_/PLMI/S_GSS_MR_STRUC_ID_PARAM_STR-CCOAA sy-vline      INTO ld_text SEPARATED BY SPACE.

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