ABAP Select data from SAP table ISRHEATCOM into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM ISRHEATCOM
*  INTO TABLE @DATA(IT_ISRHEATCOM2).
*--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_ISRHEATCOM INDEX 1 INTO DATA(WA_ISRHEATCOM2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<ISRHEATCOM>-MANDT = 1.
<ISRHEATCOM>-PCSFTYCMBTNHEATPRPTYUUID = 1.
<ISRHEATCOM>-PCSFTYPRPTYUUID = 1.
<ISRHEATCOM>-CREATIONUTCDATETIME = 1.
<ISRHEATCOM>-CREATEDBYUSER = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_ISRHEATCOM-LASTCHANGEUTCDATETIME, sy-vline,
  WA_ISRHEATCOM-LASTCHANGEDBYUSER, sy-vline,
  WA_ISRHEATCOM-PCSFTYCMBTNHEATLOWRQTYOPTR, sy-vline,
  WA_ISRHEATCOM-PCSFTYCMBTNHEATLOWRQTY, sy-vline,
  WA_ISRHEATCOM-PCSFTYCMBTNHEATLOWRQTYTXT, sy-vline,
  WA_ISRHEATCOM-PCSFTYCMBTNHEATUPRQTYOPTR, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_ISRHEATCOM 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_ISRHEATCOM 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_ISRHEATCOM INTO WA_ISRHEATCOM.


*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 CUNIT, internal->external for field PCSFTYCMBTNHEATQTYUNIT
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_ISRHEATCOM-PCSFTYCMBTNHEATQTYUNIT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ISRHEATCOM-PCSFTYCMBTNHEATQTYUNIT.
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_ISRHEATCOM_STR, 
MANDT TYPE STRING,
PCSFTYCMBTNHEATPRPTYUUID TYPE STRING,
PCSFTYPRPTYUUID TYPE STRING,
CREATIONUTCDATETIME TYPE STRING,
CREATEDBYUSER TYPE STRING,
LASTCHANGEUTCDATETIME TYPE STRING,
LASTCHANGEDBYUSER TYPE STRING,
PCSFTYCMBTNHEATLOWRQTYOPTR TYPE STRING,
PCSFTYCMBTNHEATLOWRQTY TYPE STRING,
PCSFTYCMBTNHEATLOWRQTYTXT TYPE STRING,
PCSFTYCMBTNHEATUPRQTYOPTR TYPE STRING,
PCSFTYCMBTNHEATUPRQTY TYPE STRING,
PCSFTYCMBTNHEATUPRQTYTXT TYPE STRING,
PCSFTYCMBTNHEATQTYUNIT TYPE STRING,
PCSFTYNOTETEXT TYPE STRING,
PCSFTYHASNOAPPL TYPE STRING,
PCSFTYHASNODATA TYPE STRING,END OF T_EKKO_STR.
DATA: WA_ISRHEATCOM_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_ISRHEATCOM_STR-MANDT sy-vline 
WA_ISRHEATCOM_STR-PCSFTYCMBTNHEATPRPTYUUID sy-vline 
WA_ISRHEATCOM_STR-PCSFTYPRPTYUUID sy-vline 
WA_ISRHEATCOM_STR-CREATIONUTCDATETIME sy-vline 
WA_ISRHEATCOM_STR-CREATEDBYUSER sy-vline 
WA_ISRHEATCOM_STR-LASTCHANGEUTCDATETIME sy-vline 
WA_ISRHEATCOM_STR-LASTCHANGEDBYUSER sy-vline 
WA_ISRHEATCOM_STR-PCSFTYCMBTNHEATLOWRQTYOPTR sy-vline 
WA_ISRHEATCOM_STR-PCSFTYCMBTNHEATLOWRQTY sy-vline 
WA_ISRHEATCOM_STR-PCSFTYCMBTNHEATLOWRQTYTXT sy-vline 
WA_ISRHEATCOM_STR-PCSFTYCMBTNHEATUPRQTYOPTR sy-vline 
WA_ISRHEATCOM_STR-PCSFTYCMBTNHEATUPRQTY sy-vline 
WA_ISRHEATCOM_STR-PCSFTYCMBTNHEATUPRQTYTXT sy-vline 
WA_ISRHEATCOM_STR-PCSFTYCMBTNHEATQTYUNIT sy-vline 
WA_ISRHEATCOM_STR-PCSFTYNOTETEXT sy-vline 
WA_ISRHEATCOM_STR-PCSFTYHASNOAPPL sy-vline 
WA_ISRHEATCOM_STR-PCSFTYHASNODATA sy-vline      INTO ld_text SEPARATED BY SPACE.

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