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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM /MRSS/T_PUSH_BACK_HCM_INFO
*  INTO TABLE @DATA(IT_/MRSS/T_PUSH_BACK_HCM_INFO2).
*--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_PUSH_BACK_HCM_INFO INDEX 1 INTO DATA(WA_/MRSS/T_PUSH_BACK_HCM_INFO2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
</MRSS/T_PUSH_BACK_HCM_INFO>-COMMAND_NO = 1.
</MRSS/T_PUSH_BACK_HCM_INFO>-OPERATION = 1.
</MRSS/T_PUSH_BACK_HCM_INFO>-OBJECT_TYPE = 1.
</MRSS/T_PUSH_BACK_HCM_INFO>-TIMESPEC_KEY = 1.
</MRSS/T_PUSH_BACK_HCM_INFO>-TIMESPEC_ORIGIN_IS_MRS = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_/MRSS/T_PUSH_BACK_HCM_INFO-TIMESPEC_OLD, sy-vline,
  WA_/MRSS/T_PUSH_BACK_HCM_INFO-BUSINESS_PARTNER_ID, sy-vline,
  WA_/MRSS/T_PUSH_BACK_HCM_INFO-TIMESPEC_KEY, sy-vline,
  WA_/MRSS/T_PUSH_BACK_HCM_INFO-BEG_TSTMP, sy-vline,
  WA_/MRSS/T_PUSH_BACK_HCM_INFO-END_TSTMP, sy-vline,
  WA_/MRSS/T_PUSH_BACK_HCM_INFO-BEG_ALLOWED, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_/MRSS/T_PUSH_BACK_HCM_INFO 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_PUSH_BACK_HCM_INFO 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_PUSH_BACK_HCM_INFO INTO WA_/MRSS/T_PUSH_BACK_HCM_INFO.


*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.
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_PUSH_BACK_HCM_INFO_STR, 
COMMAND_NO TYPE STRING,
OPERATION TYPE STRING,
OBJECT_TYPE TYPE STRING,
TIMESPEC_KEY TYPE STRING,
TIMESPEC_ORIGIN_IS_MRS TYPE STRING,
TIMESPEC_OLD TYPE STRING,
BUSINESS_PARTNER_ID TYPE STRING,
TIMESPEC_KEY TYPE STRING,
BEG_TSTMP TYPE STRING,
END_TSTMP TYPE STRING,
BEG_ALLOWED TYPE STRING,
END_ALLOWED TYPE STRING,
DURATION TYPE STRING,
CAPACITY TYPE STRING,
TIMESPEC_TYPE TYPE STRING,
PRIORITY TYPE STRING,
DESCRIPTION TYPE STRING,
IS_AVAILABLE TYPE STRING,
IS_PRIVATE TYPE STRING,
IS_SIMPLE TYPE STRING,
CREATED_BY TYPE STRING,
CREATED TYPE STRING,
CHANGED_BY TYPE STRING,
CHANGED TYPE STRING,
ONCALL_TYPE TYPE STRING,
IS_PLANNER_RELEVANT TYPE STRING,
TIMESPEC_NEW TYPE STRING,
BUSINESS_PARTNER_ID TYPE STRING,
TIMESPEC_KEY TYPE STRING,
BEG_TSTMP TYPE STRING,
END_TSTMP TYPE STRING,
BEG_ALLOWED TYPE STRING,
END_ALLOWED TYPE STRING,
DURATION TYPE STRING,
CAPACITY TYPE STRING,
TIMESPEC_TYPE TYPE STRING,
PRIORITY TYPE STRING,
DESCRIPTION TYPE STRING,
IS_AVAILABLE TYPE STRING,
IS_PRIVATE TYPE STRING,
IS_SIMPLE TYPE STRING,
CREATED_BY TYPE STRING,
CREATED TYPE STRING,
CHANGED_BY TYPE STRING,
CHANGED TYPE STRING,
ONCALL_TYPE TYPE STRING,
IS_PLANNER_RELEVANT TYPE STRING,
HCM_PAKEY TYPE STRING,
PERNR TYPE STRING,
SUBTY TYPE STRING,
OBJPS TYPE STRING,
SPRPS TYPE STRING,
ENDDA TYPE STRING,
BEGDA TYPE STRING,
SEQNR TYPE STRING,
SUBSTITUTION_ORIGIN_IS_MRS TYPE STRING,
SUBSTITUTION TYPE STRING,
PERNR TYPE STRING,
SUBTY TYPE STRING,
OBJPS TYPE STRING,
SPRPS TYPE STRING,
ENDDA TYPE STRING,
BEGDA TYPE STRING,
SEQNR TYPE STRING,
RESOURCE_KEY TYPE STRING,
HR_SUBTY TYPE STRING,
VTEXT TYPE STRING,
TPROG TYPE STRING,
TPTXT TYPE STRING,
VARIA TYPE STRING,
BEG_TSTMP TYPE STRING,
END_TSTMP TYPE STRING,
CUT_PLANNING_HORIZON TYPE STRING,
IS_DEL_REL TYPE STRING,END OF T_EKKO_STR.
DATA: WA_/MRSS/T_PUSH_BACK_HCM_INFO_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_PUSH_BACK_HCM_INFO_STR-COMMAND_NO sy-vline 
WA_/MRSS/T_PUSH_BACK_HCM_INFO_STR-OPERATION sy-vline 
WA_/MRSS/T_PUSH_BACK_HCM_INFO_STR-OBJECT_TYPE sy-vline 
WA_/MRSS/T_PUSH_BACK_HCM_INFO_STR-TIMESPEC_KEY sy-vline 
WA_/MRSS/T_PUSH_BACK_HCM_INFO_STR-TIMESPEC_ORIGIN_IS_MRS sy-vline 
WA_/MRSS/T_PUSH_BACK_HCM_INFO_STR-TIMESPEC_OLD sy-vline 
WA_/MRSS/T_PUSH_BACK_HCM_INFO_STR-BUSINESS_PARTNER_ID sy-vline 
WA_/MRSS/T_PUSH_BACK_HCM_INFO_STR-TIMESPEC_KEY sy-vline 
WA_/MRSS/T_PUSH_BACK_HCM_INFO_STR-BEG_TSTMP sy-vline 
WA_/MRSS/T_PUSH_BACK_HCM_INFO_STR-END_TSTMP sy-vline 
WA_/MRSS/T_PUSH_BACK_HCM_INFO_STR-BEG_ALLOWED sy-vline 
WA_/MRSS/T_PUSH_BACK_HCM_INFO_STR-END_ALLOWED sy-vline 
WA_/MRSS/T_PUSH_BACK_HCM_INFO_STR-DURATION sy-vline 
WA_/MRSS/T_PUSH_BACK_HCM_INFO_STR-CAPACITY sy-vline 
WA_/MRSS/T_PUSH_BACK_HCM_INFO_STR-TIMESPEC_TYPE sy-vline 
WA_/MRSS/T_PUSH_BACK_HCM_INFO_STR-PRIORITY sy-vline 
WA_/MRSS/T_PUSH_BACK_HCM_INFO_STR-DESCRIPTION sy-vline 
WA_/MRSS/T_PUSH_BACK_HCM_INFO_STR-IS_AVAILABLE sy-vline 
WA_/MRSS/T_PUSH_BACK_HCM_INFO_STR-IS_PRIVATE sy-vline 
WA_/MRSS/T_PUSH_BACK_HCM_INFO_STR-IS_SIMPLE sy-vline 
WA_/MRSS/T_PUSH_BACK_HCM_INFO_STR-CREATED_BY sy-vline 
WA_/MRSS/T_PUSH_BACK_HCM_INFO_STR-CREATED sy-vline 
WA_/MRSS/T_PUSH_BACK_HCM_INFO_STR-CHANGED_BY sy-vline 
WA_/MRSS/T_PUSH_BACK_HCM_INFO_STR-CHANGED sy-vline 
WA_/MRSS/T_PUSH_BACK_HCM_INFO_STR-ONCALL_TYPE sy-vline 
WA_/MRSS/T_PUSH_BACK_HCM_INFO_STR-IS_PLANNER_RELEVANT sy-vline 
WA_/MRSS/T_PUSH_BACK_HCM_INFO_STR-TIMESPEC_NEW sy-vline 
WA_/MRSS/T_PUSH_BACK_HCM_INFO_STR-BUSINESS_PARTNER_ID sy-vline 
WA_/MRSS/T_PUSH_BACK_HCM_INFO_STR-TIMESPEC_KEY sy-vline 
WA_/MRSS/T_PUSH_BACK_HCM_INFO_STR-BEG_TSTMP sy-vline 
WA_/MRSS/T_PUSH_BACK_HCM_INFO_STR-END_TSTMP sy-vline 
WA_/MRSS/T_PUSH_BACK_HCM_INFO_STR-BEG_ALLOWED sy-vline 
WA_/MRSS/T_PUSH_BACK_HCM_INFO_STR-END_ALLOWED sy-vline 
WA_/MRSS/T_PUSH_BACK_HCM_INFO_STR-DURATION sy-vline 
WA_/MRSS/T_PUSH_BACK_HCM_INFO_STR-CAPACITY sy-vline 
WA_/MRSS/T_PUSH_BACK_HCM_INFO_STR-TIMESPEC_TYPE sy-vline 
WA_/MRSS/T_PUSH_BACK_HCM_INFO_STR-PRIORITY sy-vline 
WA_/MRSS/T_PUSH_BACK_HCM_INFO_STR-DESCRIPTION sy-vline 
WA_/MRSS/T_PUSH_BACK_HCM_INFO_STR-IS_AVAILABLE sy-vline 
WA_/MRSS/T_PUSH_BACK_HCM_INFO_STR-IS_PRIVATE sy-vline 
WA_/MRSS/T_PUSH_BACK_HCM_INFO_STR-IS_SIMPLE sy-vline 
WA_/MRSS/T_PUSH_BACK_HCM_INFO_STR-CREATED_BY sy-vline 
WA_/MRSS/T_PUSH_BACK_HCM_INFO_STR-CREATED sy-vline 
WA_/MRSS/T_PUSH_BACK_HCM_INFO_STR-CHANGED_BY sy-vline 
WA_/MRSS/T_PUSH_BACK_HCM_INFO_STR-CHANGED sy-vline 
WA_/MRSS/T_PUSH_BACK_HCM_INFO_STR-ONCALL_TYPE sy-vline 
WA_/MRSS/T_PUSH_BACK_HCM_INFO_STR-IS_PLANNER_RELEVANT sy-vline 
WA_/MRSS/T_PUSH_BACK_HCM_INFO_STR-HCM_PAKEY sy-vline 
WA_/MRSS/T_PUSH_BACK_HCM_INFO_STR-PERNR sy-vline 
WA_/MRSS/T_PUSH_BACK_HCM_INFO_STR-SUBTY sy-vline 
WA_/MRSS/T_PUSH_BACK_HCM_INFO_STR-OBJPS sy-vline 
WA_/MRSS/T_PUSH_BACK_HCM_INFO_STR-SPRPS sy-vline 
WA_/MRSS/T_PUSH_BACK_HCM_INFO_STR-ENDDA sy-vline 
WA_/MRSS/T_PUSH_BACK_HCM_INFO_STR-BEGDA sy-vline 
WA_/MRSS/T_PUSH_BACK_HCM_INFO_STR-SEQNR sy-vline 
WA_/MRSS/T_PUSH_BACK_HCM_INFO_STR-SUBSTITUTION_ORIGIN_IS_MRS sy-vline 
WA_/MRSS/T_PUSH_BACK_HCM_INFO_STR-SUBSTITUTION sy-vline 
WA_/MRSS/T_PUSH_BACK_HCM_INFO_STR-PERNR sy-vline 
WA_/MRSS/T_PUSH_BACK_HCM_INFO_STR-SUBTY sy-vline 
WA_/MRSS/T_PUSH_BACK_HCM_INFO_STR-OBJPS sy-vline 
WA_/MRSS/T_PUSH_BACK_HCM_INFO_STR-SPRPS sy-vline 
WA_/MRSS/T_PUSH_BACK_HCM_INFO_STR-ENDDA sy-vline 
WA_/MRSS/T_PUSH_BACK_HCM_INFO_STR-BEGDA sy-vline 
WA_/MRSS/T_PUSH_BACK_HCM_INFO_STR-SEQNR sy-vline 
WA_/MRSS/T_PUSH_BACK_HCM_INFO_STR-RESOURCE_KEY sy-vline 
WA_/MRSS/T_PUSH_BACK_HCM_INFO_STR-HR_SUBTY sy-vline 
WA_/MRSS/T_PUSH_BACK_HCM_INFO_STR-VTEXT sy-vline 
WA_/MRSS/T_PUSH_BACK_HCM_INFO_STR-TPROG sy-vline 
WA_/MRSS/T_PUSH_BACK_HCM_INFO_STR-TPTXT sy-vline 
WA_/MRSS/T_PUSH_BACK_HCM_INFO_STR-VARIA sy-vline 
WA_/MRSS/T_PUSH_BACK_HCM_INFO_STR-BEG_TSTMP sy-vline 
WA_/MRSS/T_PUSH_BACK_HCM_INFO_STR-END_TSTMP sy-vline 
WA_/MRSS/T_PUSH_BACK_HCM_INFO_STR-CUT_PLANNING_HORIZON sy-vline 
WA_/MRSS/T_PUSH_BACK_HCM_INFO_STR-IS_DEL_REL sy-vline      INTO ld_text SEPARATED BY SPACE.

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