ABAP Select data from SAP table CACS_S_HMT_LINE into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM CACS_S_HMT_LINE
*  INTO TABLE @DATA(IT_CACS_S_HMT_LINE2).
*--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_CACS_S_HMT_LINE INDEX 1 INTO DATA(WA_CACS_S_HMT_LINE2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<CACS_S_HMT_LINE>-MAINGROUP = 1.
<CACS_S_HMT_LINE>-SUBGROUP = 1.
<CACS_S_HMT_LINE>-KEYFIELD01 = 1.
<CACS_S_HMT_LINE>-KEYFIELD02 = 1.
<CACS_S_HMT_LINE>-KEYFIELD03 = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_CACS_S_HMT_LINE-KEYFIELD04, sy-vline,
  WA_CACS_S_HMT_LINE-KEYFIELD05, sy-vline,
  WA_CACS_S_HMT_LINE-KEYFIELD06, sy-vline,
  WA_CACS_S_HMT_LINE-KEYFIELD07, sy-vline,
  WA_CACS_S_HMT_LINE-KEYFIELD08, sy-vline,
  WA_CACS_S_HMT_LINE-KEYFIELD09, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_CACS_S_HMT_LINE 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_CACS_S_HMT_LINE 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_CACS_S_HMT_LINE INTO WA_CACS_S_HMT_LINE.


*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_CACS_S_HMT_LINE_STR, 
MAINGROUP TYPE STRING,
SUBGROUP TYPE STRING,
KEYFIELD01 TYPE STRING,
KEYFIELD02 TYPE STRING,
KEYFIELD03 TYPE STRING,
KEYFIELD04 TYPE STRING,
KEYFIELD05 TYPE STRING,
KEYFIELD06 TYPE STRING,
KEYFIELD07 TYPE STRING,
KEYFIELD08 TYPE STRING,
KEYFIELD09 TYPE STRING,
KEYFIELD10 TYPE STRING,
KEYTITLE01 TYPE STRING,
KEYTITLE02 TYPE STRING,
KEYTITLE03 TYPE STRING,
KEYTITLE04 TYPE STRING,
KEYTITLE05 TYPE STRING,
KEYTITLE06 TYPE STRING,
KEYTITLE07 TYPE STRING,
KEYTITLE08 TYPE STRING,
KEYTITLE09 TYPE STRING,
KEYTITLE10 TYPE STRING,
ID_STD TYPE STRING,
AMOUNT_STD TYPE STRING,
CURRENCY_STD TYPE STRING,
BUDAT_BEGIN_STD TYPE STRING,
BUDAT_END_STD TYPE STRING,
ID TYPE STRING,
AMOUNT TYPE STRING,
AMOUNT_OLD TYPE STRING,
CURRENCY TYPE STRING,
CURRENCY_OLD TYPE STRING,
BUDAT_BEGIN TYPE STRING,
BUDAT_BEGIN_OLD TYPE STRING,
BUDAT_END TYPE STRING,
BUDAT_END_OLD TYPE STRING,
STATE TYPE STRING,
STATE_OLD TYPE STRING,END OF T_EKKO_STR.
DATA: WA_CACS_S_HMT_LINE_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_CACS_S_HMT_LINE_STR-MAINGROUP sy-vline 
WA_CACS_S_HMT_LINE_STR-SUBGROUP sy-vline 
WA_CACS_S_HMT_LINE_STR-KEYFIELD01 sy-vline 
WA_CACS_S_HMT_LINE_STR-KEYFIELD02 sy-vline 
WA_CACS_S_HMT_LINE_STR-KEYFIELD03 sy-vline 
WA_CACS_S_HMT_LINE_STR-KEYFIELD04 sy-vline 
WA_CACS_S_HMT_LINE_STR-KEYFIELD05 sy-vline 
WA_CACS_S_HMT_LINE_STR-KEYFIELD06 sy-vline 
WA_CACS_S_HMT_LINE_STR-KEYFIELD07 sy-vline 
WA_CACS_S_HMT_LINE_STR-KEYFIELD08 sy-vline 
WA_CACS_S_HMT_LINE_STR-KEYFIELD09 sy-vline 
WA_CACS_S_HMT_LINE_STR-KEYFIELD10 sy-vline 
WA_CACS_S_HMT_LINE_STR-KEYTITLE01 sy-vline 
WA_CACS_S_HMT_LINE_STR-KEYTITLE02 sy-vline 
WA_CACS_S_HMT_LINE_STR-KEYTITLE03 sy-vline 
WA_CACS_S_HMT_LINE_STR-KEYTITLE04 sy-vline 
WA_CACS_S_HMT_LINE_STR-KEYTITLE05 sy-vline 
WA_CACS_S_HMT_LINE_STR-KEYTITLE06 sy-vline 
WA_CACS_S_HMT_LINE_STR-KEYTITLE07 sy-vline 
WA_CACS_S_HMT_LINE_STR-KEYTITLE08 sy-vline 
WA_CACS_S_HMT_LINE_STR-KEYTITLE09 sy-vline 
WA_CACS_S_HMT_LINE_STR-KEYTITLE10 sy-vline 
WA_CACS_S_HMT_LINE_STR-ID_STD sy-vline 
WA_CACS_S_HMT_LINE_STR-AMOUNT_STD sy-vline 
WA_CACS_S_HMT_LINE_STR-CURRENCY_STD sy-vline 
WA_CACS_S_HMT_LINE_STR-BUDAT_BEGIN_STD sy-vline 
WA_CACS_S_HMT_LINE_STR-BUDAT_END_STD sy-vline 
WA_CACS_S_HMT_LINE_STR-ID sy-vline 
WA_CACS_S_HMT_LINE_STR-AMOUNT sy-vline 
WA_CACS_S_HMT_LINE_STR-AMOUNT_OLD sy-vline 
WA_CACS_S_HMT_LINE_STR-CURRENCY sy-vline 
WA_CACS_S_HMT_LINE_STR-CURRENCY_OLD sy-vline 
WA_CACS_S_HMT_LINE_STR-BUDAT_BEGIN sy-vline 
WA_CACS_S_HMT_LINE_STR-BUDAT_BEGIN_OLD sy-vline 
WA_CACS_S_HMT_LINE_STR-BUDAT_END sy-vline 
WA_CACS_S_HMT_LINE_STR-BUDAT_END_OLD sy-vline 
WA_CACS_S_HMT_LINE_STR-STATE sy-vline 
WA_CACS_S_HMT_LINE_STR-STATE_OLD sy-vline      INTO ld_text SEPARATED BY SPACE.

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