ABAP Select data from SAP table /MRSS/T_POT_UR_RAW_DATA 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_POT_UR_RAW_DATA 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_POT_UR_RAW_DATA. 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_POT_UR_RAW_DATA 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_POT_UR_RAW_DATA TYPE STANDARD TABLE OF /MRSS/T_POT_UR_RAW_DATA,
      WA_/MRSS/T_POT_UR_RAW_DATA TYPE /MRSS/T_POT_UR_RAW_DATA,
      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_POT_UR_RAW_DATA> TYPE /MRSS/T_POT_UR_RAW_DATA.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM /MRSS/T_POT_UR_RAW_DATA
*  INTO TABLE @DATA(IT_/MRSS/T_POT_UR_RAW_DATA2).
*--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_POT_UR_RAW_DATA INDEX 1 INTO DATA(WA_/MRSS/T_POT_UR_RAW_DATA2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
</MRSS/T_POT_UR_RAW_DATA>-PLANNING_NODE = 1.
</MRSS/T_POT_UR_RAW_DATA>-PLVAR = 1.
</MRSS/T_POT_UR_RAW_DATA>-OTYPE = 1.
</MRSS/T_POT_UR_RAW_DATA>-OBJID = 1.
</MRSS/T_POT_UR_RAW_DATA>-BEGDA = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_/MRSS/T_POT_UR_RAW_DATA-ENDDA, sy-vline,
  WA_/MRSS/T_POT_UR_RAW_DATA-ISTAT, sy-vline,
  WA_/MRSS/T_POT_UR_RAW_DATA-HISTO, sy-vline,
  WA_/MRSS/T_POT_UR_RAW_DATA-SHORT, sy-vline,
  WA_/MRSS/T_POT_UR_RAW_DATA-STEXT, sy-vline,
  WA_/MRSS/T_POT_UR_RAW_DATA-REALO, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_/MRSS/T_POT_UR_RAW_DATA 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_POT_UR_RAW_DATA 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_POT_UR_RAW_DATA INTO WA_/MRSS/T_POT_UR_RAW_DATA.


*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 TSTPS, internal->external for field DATE_FROM_TS
CALL FUNCTION 'CONVERSION_EXIT_TSTPS_OUTPUT'
  EXPORTING
    input =                      WA_/MRSS/T_POT_UR_RAW_DATA-DATE_FROM_TS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/MRSS/T_POT_UR_RAW_DATA-DATE_FROM_TS.
WRITE:/ 'New Value:', ld_input.

*Conversion exit TSTPS, internal->external for field DATE_TO_TS
CALL FUNCTION 'CONVERSION_EXIT_TSTPS_OUTPUT'
  EXPORTING
    input =                      WA_/MRSS/T_POT_UR_RAW_DATA-DATE_TO_TS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/MRSS/T_POT_UR_RAW_DATA-DATE_TO_TS.
WRITE:/ 'New Value:', ld_input.

*Conversion exit TSTPS, internal->external for field BEGIN_TSTMP
CALL FUNCTION 'CONVERSION_EXIT_TSTPS_OUTPUT'
  EXPORTING
    input =                      WA_/MRSS/T_POT_UR_RAW_DATA-BEGIN_TSTMP
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/MRSS/T_POT_UR_RAW_DATA-BEGIN_TSTMP.
WRITE:/ 'New Value:', ld_input.

*Conversion exit TSTPS, internal->external for field END_TSTMP
CALL FUNCTION 'CONVERSION_EXIT_TSTPS_OUTPUT'
  EXPORTING
    input =                      WA_/MRSS/T_POT_UR_RAW_DATA-END_TSTMP
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/MRSS/T_POT_UR_RAW_DATA-END_TSTMP.
WRITE:/ 'New Value:', ld_input.

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

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

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

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

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

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

*Conversion exit CUNIT, internal->external for field CAPA_RES_UNIT_SI
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_/MRSS/T_POT_UR_RAW_DATA-CAPA_RES_UNIT_SI
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/MRSS/T_POT_UR_RAW_DATA-CAPA_RES_UNIT_SI.
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_POT_UR_RAW_DATA_STR, 
PLANNING_NODE TYPE STRING,
PLVAR TYPE STRING,
OTYPE TYPE STRING,
OBJID TYPE STRING,
BEGDA TYPE STRING,
ENDDA TYPE STRING,
ISTAT TYPE STRING,
HISTO TYPE STRING,
SHORT TYPE STRING,
STEXT TYPE STRING,
REALO TYPE STRING,
NODE_KEY TYPE STRING,
QUAL_CATEGORY TYPE STRING,
QUAL_CATEGORY_NAME TYPE STRING,
GUID TYPE STRING,
GUID_MD_ATTR TYPE STRING,
DATE TYPE STRING,
POT_DATA TYPE STRING,
DATE_FROM_TS TYPE STRING,
DATE_TO_TS TYPE STRING,
BEGIN_TSTMP TYPE STRING,
END_TSTMP TYPE STRING,
RESOURCES TYPE STRING,
INTERVAL_ID TYPE STRING,
CAPA_POT TYPE STRING,
CAPA_POT_UNIT TYPE STRING,
CAPA_REAL TYPE STRING,
CAPA_REAL_UNIT TYPE STRING,
CAPA_RES_CONS TYPE STRING,
CAPA_RES_CONS_UN TYPE STRING,
CAPA_CONS TYPE STRING,
CAPA_CONS_UNIT TYPE STRING,
CAP_RESERVE TYPE STRING,
CAPA_RESERVE TYPE STRING,
CAPA_RESERVE_UNIT TYPE STRING,
CAPA_RESERVE_SLA TYPE STRING,
CAPA_RES_UNIT_SLA TYPE STRING,
CAPA_RESERVE_SIN TYPE STRING,
CAPA_RES_UNIT_SI TYPE STRING,END OF T_EKKO_STR.
DATA: WA_/MRSS/T_POT_UR_RAW_DATA_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_POT_UR_RAW_DATA_STR-PLANNING_NODE sy-vline 
WA_/MRSS/T_POT_UR_RAW_DATA_STR-PLVAR sy-vline 
WA_/MRSS/T_POT_UR_RAW_DATA_STR-OTYPE sy-vline 
WA_/MRSS/T_POT_UR_RAW_DATA_STR-OBJID sy-vline 
WA_/MRSS/T_POT_UR_RAW_DATA_STR-BEGDA sy-vline 
WA_/MRSS/T_POT_UR_RAW_DATA_STR-ENDDA sy-vline 
WA_/MRSS/T_POT_UR_RAW_DATA_STR-ISTAT sy-vline 
WA_/MRSS/T_POT_UR_RAW_DATA_STR-HISTO sy-vline 
WA_/MRSS/T_POT_UR_RAW_DATA_STR-SHORT sy-vline 
WA_/MRSS/T_POT_UR_RAW_DATA_STR-STEXT sy-vline 
WA_/MRSS/T_POT_UR_RAW_DATA_STR-REALO sy-vline 
WA_/MRSS/T_POT_UR_RAW_DATA_STR-NODE_KEY sy-vline 
WA_/MRSS/T_POT_UR_RAW_DATA_STR-QUAL_CATEGORY sy-vline 
WA_/MRSS/T_POT_UR_RAW_DATA_STR-QUAL_CATEGORY_NAME sy-vline 
WA_/MRSS/T_POT_UR_RAW_DATA_STR-GUID sy-vline 
WA_/MRSS/T_POT_UR_RAW_DATA_STR-GUID_MD_ATTR sy-vline 
WA_/MRSS/T_POT_UR_RAW_DATA_STR-DATE sy-vline 
WA_/MRSS/T_POT_UR_RAW_DATA_STR-POT_DATA sy-vline 
WA_/MRSS/T_POT_UR_RAW_DATA_STR-DATE_FROM_TS sy-vline 
WA_/MRSS/T_POT_UR_RAW_DATA_STR-DATE_TO_TS sy-vline 
WA_/MRSS/T_POT_UR_RAW_DATA_STR-BEGIN_TSTMP sy-vline 
WA_/MRSS/T_POT_UR_RAW_DATA_STR-END_TSTMP sy-vline 
WA_/MRSS/T_POT_UR_RAW_DATA_STR-RESOURCES sy-vline 
WA_/MRSS/T_POT_UR_RAW_DATA_STR-INTERVAL_ID sy-vline 
WA_/MRSS/T_POT_UR_RAW_DATA_STR-CAPA_POT sy-vline 
WA_/MRSS/T_POT_UR_RAW_DATA_STR-CAPA_POT_UNIT sy-vline 
WA_/MRSS/T_POT_UR_RAW_DATA_STR-CAPA_REAL sy-vline 
WA_/MRSS/T_POT_UR_RAW_DATA_STR-CAPA_REAL_UNIT sy-vline 
WA_/MRSS/T_POT_UR_RAW_DATA_STR-CAPA_RES_CONS sy-vline 
WA_/MRSS/T_POT_UR_RAW_DATA_STR-CAPA_RES_CONS_UN sy-vline 
WA_/MRSS/T_POT_UR_RAW_DATA_STR-CAPA_CONS sy-vline 
WA_/MRSS/T_POT_UR_RAW_DATA_STR-CAPA_CONS_UNIT sy-vline 
WA_/MRSS/T_POT_UR_RAW_DATA_STR-CAP_RESERVE sy-vline 
WA_/MRSS/T_POT_UR_RAW_DATA_STR-CAPA_RESERVE sy-vline 
WA_/MRSS/T_POT_UR_RAW_DATA_STR-CAPA_RESERVE_UNIT sy-vline 
WA_/MRSS/T_POT_UR_RAW_DATA_STR-CAPA_RESERVE_SLA sy-vline 
WA_/MRSS/T_POT_UR_RAW_DATA_STR-CAPA_RES_UNIT_SLA sy-vline 
WA_/MRSS/T_POT_UR_RAW_DATA_STR-CAPA_RESERVE_SIN sy-vline 
WA_/MRSS/T_POT_UR_RAW_DATA_STR-CAPA_RES_UNIT_SI sy-vline      INTO ld_text SEPARATED BY SPACE.

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