ABAP Select data from SAP table M_HRLCTCN_CNTR_A into internal table

Get Example source ABAP code based on a different SAP table
  Get ABAP code

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM M_HRLCTCN_CNTR_A
*  INTO TABLE @DATA(IT_M_HRLCTCN_CNTR_A2).
*--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_M_HRLCTCN_CNTR_A INDEX 1 INTO DATA(WA_M_HRLCTCN_CNTR_A2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<M_HRLCTCN_CNTR_A>-MANDT = 1.
<M_HRLCTCN_CNTR_A>-CREDT = 1.
<M_HRLCTCN_CNTR_A>-LPROT = 1.
<M_HRLCTCN_CNTR_A>-ERNPN = 1.
<M_HRLCTCN_CNTR_A>-ERNPU = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_M_HRLCTCN_CNTR_A-EENPN, sy-vline,
  WA_M_HRLCTCN_CNTR_A-EENPU, sy-vline,
  WA_M_HRLCTCN_CNTR_A-PERNR, sy-vline,
  WA_M_HRLCTCN_CNTR_A-ENDDA, sy-vline,
  WA_M_HRLCTCN_CNTR_A-BEGDA, sy-vline,
  WA_M_HRLCTCN_CNTR_A-WTTKL, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_M_HRLCTCN_CNTR_A 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_M_HRLCTCN_CNTR_A 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_M_HRLCTCN_CNTR_A INTO WA_M_HRLCTCN_CNTR_A.


*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_M_HRLCTCN_CNTR_A_STR, 
MANDT TYPE STRING,
CREDT TYPE STRING,
LPROT TYPE STRING,
ERNPN TYPE STRING,
ERNPU TYPE STRING,
EENPN TYPE STRING,
EENPU TYPE STRING,
PERNR TYPE STRING,
ENDDA TYPE STRING,
BEGDA TYPE STRING,
WTTKL TYPE STRING,
PRBZT TYPE STRING,
PRBEH TYPE STRING,
CTTYP TYPE STRING,
CTEDT TYPE STRING,
WRKPL TYPE STRING,
CTNUM TYPE STRING,END OF T_EKKO_STR.
DATA: WA_M_HRLCTCN_CNTR_A_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_M_HRLCTCN_CNTR_A_STR-MANDT sy-vline 
WA_M_HRLCTCN_CNTR_A_STR-CREDT sy-vline 
WA_M_HRLCTCN_CNTR_A_STR-LPROT sy-vline 
WA_M_HRLCTCN_CNTR_A_STR-ERNPN sy-vline 
WA_M_HRLCTCN_CNTR_A_STR-ERNPU sy-vline 
WA_M_HRLCTCN_CNTR_A_STR-EENPN sy-vline 
WA_M_HRLCTCN_CNTR_A_STR-EENPU sy-vline 
WA_M_HRLCTCN_CNTR_A_STR-PERNR sy-vline 
WA_M_HRLCTCN_CNTR_A_STR-ENDDA sy-vline 
WA_M_HRLCTCN_CNTR_A_STR-BEGDA sy-vline 
WA_M_HRLCTCN_CNTR_A_STR-WTTKL sy-vline 
WA_M_HRLCTCN_CNTR_A_STR-PRBZT sy-vline 
WA_M_HRLCTCN_CNTR_A_STR-PRBEH sy-vline 
WA_M_HRLCTCN_CNTR_A_STR-CTTYP sy-vline 
WA_M_HRLCTCN_CNTR_A_STR-CTEDT sy-vline 
WA_M_HRLCTCN_CNTR_A_STR-WRKPL sy-vline 
WA_M_HRLCTCN_CNTR_A_STR-CTNUM sy-vline      INTO ld_text SEPARATED BY SPACE.

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