ABAP Select data from SAP table HRTMC_S_SUCCESSOR into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP HRTMC_S_SUCCESSOR 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 HRTMC_S_SUCCESSOR. 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 HRTMC_S_SUCCESSOR 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_HRTMC_S_SUCCESSOR TYPE STANDARD TABLE OF HRTMC_S_SUCCESSOR,
      WA_HRTMC_S_SUCCESSOR TYPE HRTMC_S_SUCCESSOR,
      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: <HRTMC_S_SUCCESSOR> TYPE HRTMC_S_SUCCESSOR.

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

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM HRTMC_S_SUCCESSOR
  INTO TABLE IT_HRTMC_S_SUCCESSOR.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM HRTMC_S_SUCCESSOR
*  INTO TABLE @DATA(IT_HRTMC_S_SUCCESSOR2).
*--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_HRTMC_S_SUCCESSOR INDEX 1 INTO DATA(WA_HRTMC_S_SUCCESSOR2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_HRTMC_S_SUCCESSOR ASSIGNING <HRTMC_S_SUCCESSOR>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<HRTMC_S_SUCCESSOR>-SUCCESSION = 1.
<HRTMC_S_SUCCESSOR>-STATUS = 1.
<HRTMC_S_SUCCESSOR>-REASON_FOR_CREAT = 1.
<HRTMC_S_SUCCESSOR>-REASON_FOR_DELIM = 1.
<HRTMC_S_SUCCESSOR>-CREAT_DECIDED_BY = 1.

ENDLOOP.

LOOP AT IT_HRTMC_S_SUCCESSOR INTO WA_HRTMC_S_SUCCESSOR.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_HRTMC_S_SUCCESSOR-DELIM_DECIDED_BY, sy-vline,
  WA_HRTMC_S_SUCCESSOR-COMMENT_ID, sy-vline,
  WA_HRTMC_S_SUCCESSOR-COMMENT_CLASS, sy-vline,
  WA_HRTMC_S_SUCCESSOR-READINESS, sy-vline,
  WA_HRTMC_S_SUCCESSOR-RANKING, sy-vline,
  WA_HRTMC_S_SUCCESSOR-OBJID, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_HRTMC_S_SUCCESSOR 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_HRTMC_S_SUCCESSOR 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_HRTMC_S_SUCCESSOR INTO WA_HRTMC_S_SUCCESSOR.


*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_HRTMC_S_SUCCESSOR_STR, 
SUCCESSION TYPE STRING,
STATUS TYPE STRING,
REASON_FOR_CREAT TYPE STRING,
REASON_FOR_DELIM TYPE STRING,
CREAT_DECIDED_BY TYPE STRING,
DELIM_DECIDED_BY TYPE STRING,
COMMENT_ID TYPE STRING,
COMMENT_CLASS TYPE STRING,
READINESS TYPE STRING,
RANKING TYPE STRING,
OBJID TYPE STRING,
SHORT TYPE STRING,
STEXT TYPE STRING,
TALENT_ID TYPE STRING,
BEGDA TYPE STRING,
ENDDA TYPE STRING,
RANKING_DESCR TYPE STRING,
READINESS_DESCR TYPE STRING,
FURTHER_SUCCESSIONS TYPE STRING,END OF T_EKKO_STR.
DATA: WA_HRTMC_S_SUCCESSOR_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_HRTMC_S_SUCCESSOR_STR-SUCCESSION sy-vline 
WA_HRTMC_S_SUCCESSOR_STR-STATUS sy-vline 
WA_HRTMC_S_SUCCESSOR_STR-REASON_FOR_CREAT sy-vline 
WA_HRTMC_S_SUCCESSOR_STR-REASON_FOR_DELIM sy-vline 
WA_HRTMC_S_SUCCESSOR_STR-CREAT_DECIDED_BY sy-vline 
WA_HRTMC_S_SUCCESSOR_STR-DELIM_DECIDED_BY sy-vline 
WA_HRTMC_S_SUCCESSOR_STR-COMMENT_ID sy-vline 
WA_HRTMC_S_SUCCESSOR_STR-COMMENT_CLASS sy-vline 
WA_HRTMC_S_SUCCESSOR_STR-READINESS sy-vline 
WA_HRTMC_S_SUCCESSOR_STR-RANKING sy-vline 
WA_HRTMC_S_SUCCESSOR_STR-OBJID sy-vline 
WA_HRTMC_S_SUCCESSOR_STR-SHORT sy-vline 
WA_HRTMC_S_SUCCESSOR_STR-STEXT sy-vline 
WA_HRTMC_S_SUCCESSOR_STR-TALENT_ID sy-vline 
WA_HRTMC_S_SUCCESSOR_STR-BEGDA sy-vline 
WA_HRTMC_S_SUCCESSOR_STR-ENDDA sy-vline 
WA_HRTMC_S_SUCCESSOR_STR-RANKING_DESCR sy-vline 
WA_HRTMC_S_SUCCESSOR_STR-READINESS_DESCR sy-vline 
WA_HRTMC_S_SUCCESSOR_STR-FURTHER_SUCCESSIONS sy-vline      INTO ld_text SEPARATED BY SPACE.

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