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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM /MRSS/T_RM_HRCM_EMPINFO
*  INTO TABLE @DATA(IT_/MRSS/T_RM_HRCM_EMPINFO2).
*--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_HRCM_EMPINFO INDEX 1 INTO DATA(WA_/MRSS/T_RM_HRCM_EMPINFO2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
</MRSS/T_RM_HRCM_EMPINFO>-PERNR = 1.
</MRSS/T_RM_HRCM_EMPINFO>-ENAME = 1.
</MRSS/T_RM_HRCM_EMPINFO>-SNAME = 1.
</MRSS/T_RM_HRCM_EMPINFO>-BEGDA = 1.
</MRSS/T_RM_HRCM_EMPINFO>-ENDDA = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_/MRSS/T_RM_HRCM_EMPINFO-KOSTL, sy-vline,
  WA_/MRSS/T_RM_HRCM_EMPINFO-KTEXT, sy-vline,
  WA_/MRSS/T_RM_HRCM_EMPINFO-KOKRS, sy-vline,
  WA_/MRSS/T_RM_HRCM_EMPINFO-ORGEH, sy-vline,
  WA_/MRSS/T_RM_HRCM_EMPINFO-ORGTX, sy-vline,
  WA_/MRSS/T_RM_HRCM_EMPINFO-STELL, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_/MRSS/T_RM_HRCM_EMPINFO 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_HRCM_EMPINFO 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_HRCM_EMPINFO INTO WA_/MRSS/T_RM_HRCM_EMPINFO.


*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 KOSTL
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_/MRSS/T_RM_HRCM_EMPINFO-KOSTL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/MRSS/T_RM_HRCM_EMPINFO-KOSTL.
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_HRCM_EMPINFO_STR, 
PERNR TYPE STRING,
ENAME TYPE STRING,
SNAME TYPE STRING,
BEGDA TYPE STRING,
ENDDA TYPE STRING,
KOSTL TYPE STRING,
KTEXT TYPE STRING,
KOKRS TYPE STRING,
ORGEH TYPE STRING,
ORGTX TYPE STRING,
STELL TYPE STRING,
JOBTX TYPE STRING,
PLANS TYPE STRING,
POSTX TYPE STRING,
CAREA TYPE STRING,
MPERNR TYPE STRING,
MNAME TYPE STRING,
WERKS TYPE STRING,
BTRTL TYPE STRING,
PERSG TYPE STRING,
PERSK TYPE STRING,
MOLGA TYPE STRING,
CPIND TYPE STRING,
TRFAR TYPE STRING,
TRFGB TYPE STRING,
TRFGR TYPE STRING,
TRFST TYPE STRING,
TRFKZ TYPE STRING,
WAERS TYPE STRING,
ANSAL TYPE STRING,
ANCUR TYPE STRING,
BSGRD TYPE STRING,
DIVGV TYPE STRING,
PERFR TYPE STRING,
PDATE TYPE STRING,
ELOCK TYPE STRING,
ENTDA TYPE STRING,
LEVDA TYPE STRING,END OF T_EKKO_STR.
DATA: WA_/MRSS/T_RM_HRCM_EMPINFO_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_HRCM_EMPINFO_STR-PERNR sy-vline 
WA_/MRSS/T_RM_HRCM_EMPINFO_STR-ENAME sy-vline 
WA_/MRSS/T_RM_HRCM_EMPINFO_STR-SNAME sy-vline 
WA_/MRSS/T_RM_HRCM_EMPINFO_STR-BEGDA sy-vline 
WA_/MRSS/T_RM_HRCM_EMPINFO_STR-ENDDA sy-vline 
WA_/MRSS/T_RM_HRCM_EMPINFO_STR-KOSTL sy-vline 
WA_/MRSS/T_RM_HRCM_EMPINFO_STR-KTEXT sy-vline 
WA_/MRSS/T_RM_HRCM_EMPINFO_STR-KOKRS sy-vline 
WA_/MRSS/T_RM_HRCM_EMPINFO_STR-ORGEH sy-vline 
WA_/MRSS/T_RM_HRCM_EMPINFO_STR-ORGTX sy-vline 
WA_/MRSS/T_RM_HRCM_EMPINFO_STR-STELL sy-vline 
WA_/MRSS/T_RM_HRCM_EMPINFO_STR-JOBTX sy-vline 
WA_/MRSS/T_RM_HRCM_EMPINFO_STR-PLANS sy-vline 
WA_/MRSS/T_RM_HRCM_EMPINFO_STR-POSTX sy-vline 
WA_/MRSS/T_RM_HRCM_EMPINFO_STR-CAREA sy-vline 
WA_/MRSS/T_RM_HRCM_EMPINFO_STR-MPERNR sy-vline 
WA_/MRSS/T_RM_HRCM_EMPINFO_STR-MNAME sy-vline 
WA_/MRSS/T_RM_HRCM_EMPINFO_STR-WERKS sy-vline 
WA_/MRSS/T_RM_HRCM_EMPINFO_STR-BTRTL sy-vline 
WA_/MRSS/T_RM_HRCM_EMPINFO_STR-PERSG sy-vline 
WA_/MRSS/T_RM_HRCM_EMPINFO_STR-PERSK sy-vline 
WA_/MRSS/T_RM_HRCM_EMPINFO_STR-MOLGA sy-vline 
WA_/MRSS/T_RM_HRCM_EMPINFO_STR-CPIND sy-vline 
WA_/MRSS/T_RM_HRCM_EMPINFO_STR-TRFAR sy-vline 
WA_/MRSS/T_RM_HRCM_EMPINFO_STR-TRFGB sy-vline 
WA_/MRSS/T_RM_HRCM_EMPINFO_STR-TRFGR sy-vline 
WA_/MRSS/T_RM_HRCM_EMPINFO_STR-TRFST sy-vline 
WA_/MRSS/T_RM_HRCM_EMPINFO_STR-TRFKZ sy-vline 
WA_/MRSS/T_RM_HRCM_EMPINFO_STR-WAERS sy-vline 
WA_/MRSS/T_RM_HRCM_EMPINFO_STR-ANSAL sy-vline 
WA_/MRSS/T_RM_HRCM_EMPINFO_STR-ANCUR sy-vline 
WA_/MRSS/T_RM_HRCM_EMPINFO_STR-BSGRD sy-vline 
WA_/MRSS/T_RM_HRCM_EMPINFO_STR-DIVGV sy-vline 
WA_/MRSS/T_RM_HRCM_EMPINFO_STR-PERFR sy-vline 
WA_/MRSS/T_RM_HRCM_EMPINFO_STR-PDATE sy-vline 
WA_/MRSS/T_RM_HRCM_EMPINFO_STR-ELOCK sy-vline 
WA_/MRSS/T_RM_HRCM_EMPINFO_STR-ENTDA sy-vline 
WA_/MRSS/T_RM_HRCM_EMPINFO_STR-LEVDA sy-vline      INTO ld_text SEPARATED BY SPACE.

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