ABAP Select data from SAP table HRTMC_S_FORMCLASS_AGENDA_PAGE 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_FORMCLASS_AGENDA_PAGE 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_FORMCLASS_AGENDA_PAGE. 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_FORMCLASS_AGENDA_PAGE 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_FORMCLASS_AGENDA_PAGE TYPE STANDARD TABLE OF HRTMC_S_FORMCLASS_AGENDA_PAGE,
      WA_HRTMC_S_FORMCLASS_AGENDA_PAGE TYPE HRTMC_S_FORMCLASS_AGENDA_PAGE,
      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_FORMCLASS_AGENDA_PAGE> TYPE HRTMC_S_FORMCLASS_AGENDA_PAGE.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM HRTMC_S_FORMCLASS_AGENDA_PAGE
*  INTO TABLE @DATA(IT_HRTMC_S_FORMCLASS_AGENDA_PAGE2).
*--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_FORMCLASS_AGENDA_PAGE INDEX 1 INTO DATA(WA_HRTMC_S_FORMCLASS_AGENDA_PAGE2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<HRTMC_S_FORMCLASS_AGENDA_PAGE>-WA_AGENDA = 1.
<HRTMC_S_FORMCLASS_AGENDA_PAGE>-MANDT = 1.
<HRTMC_S_FORMCLASS_AGENDA_PAGE>-PLVAR = 1.
<HRTMC_S_FORMCLASS_AGENDA_PAGE>-OTYPE = 1.
<HRTMC_S_FORMCLASS_AGENDA_PAGE>-OBJID = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_HRTMC_S_FORMCLASS_AGENDA_PAGE-INFTY, sy-vline,
  WA_HRTMC_S_FORMCLASS_AGENDA_PAGE-SUBTY, sy-vline,
  WA_HRTMC_S_FORMCLASS_AGENDA_PAGE-ISTAT, sy-vline,
  WA_HRTMC_S_FORMCLASS_AGENDA_PAGE-PRIOX, sy-vline,
  WA_HRTMC_S_FORMCLASS_AGENDA_PAGE-BEGDA, sy-vline,
  WA_HRTMC_S_FORMCLASS_AGENDA_PAGE-ENDDA, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_HRTMC_S_FORMCLASS_AGENDA_PAGE 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_FORMCLASS_AGENDA_PAGE 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_FORMCLASS_AGENDA_PAGE INTO WA_HRTMC_S_FORMCLASS_AGENDA_PAGE.


*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_FORMCLASS_AGENDA_PAGE_STR, 
WA_AGENDA TYPE STRING,
MANDT TYPE STRING,
PLVAR TYPE STRING,
OTYPE TYPE STRING,
OBJID TYPE STRING,
INFTY TYPE STRING,
SUBTY TYPE STRING,
ISTAT TYPE STRING,
PRIOX TYPE STRING,
BEGDA TYPE STRING,
ENDDA TYPE STRING,
VARYF TYPE STRING,
SEQNR TYPE STRING,
AEDTM TYPE STRING,
UNAME TYPE STRING,
REASN TYPE STRING,
HISTO TYPE STRING,
ITXNR TYPE STRING,
DESCRIPTION TYPE STRING,
TOPIC_ID TYPE STRING,
PARENT_TOPIC_ID TYPE STRING,
PREDEC_TOPIC_ID TYPE STRING,
TOPIC_TYPE TYPE STRING,
TABNR TYPE STRING,END OF T_EKKO_STR.
DATA: WA_HRTMC_S_FORMCLASS_AGENDA_PAGE_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_FORMCLASS_AGENDA_PAGE_STR-WA_AGENDA sy-vline 
WA_HRTMC_S_FORMCLASS_AGENDA_PAGE_STR-MANDT sy-vline 
WA_HRTMC_S_FORMCLASS_AGENDA_PAGE_STR-PLVAR sy-vline 
WA_HRTMC_S_FORMCLASS_AGENDA_PAGE_STR-OTYPE sy-vline 
WA_HRTMC_S_FORMCLASS_AGENDA_PAGE_STR-OBJID sy-vline 
WA_HRTMC_S_FORMCLASS_AGENDA_PAGE_STR-INFTY sy-vline 
WA_HRTMC_S_FORMCLASS_AGENDA_PAGE_STR-SUBTY sy-vline 
WA_HRTMC_S_FORMCLASS_AGENDA_PAGE_STR-ISTAT sy-vline 
WA_HRTMC_S_FORMCLASS_AGENDA_PAGE_STR-PRIOX sy-vline 
WA_HRTMC_S_FORMCLASS_AGENDA_PAGE_STR-BEGDA sy-vline 
WA_HRTMC_S_FORMCLASS_AGENDA_PAGE_STR-ENDDA sy-vline 
WA_HRTMC_S_FORMCLASS_AGENDA_PAGE_STR-VARYF sy-vline 
WA_HRTMC_S_FORMCLASS_AGENDA_PAGE_STR-SEQNR sy-vline 
WA_HRTMC_S_FORMCLASS_AGENDA_PAGE_STR-AEDTM sy-vline 
WA_HRTMC_S_FORMCLASS_AGENDA_PAGE_STR-UNAME sy-vline 
WA_HRTMC_S_FORMCLASS_AGENDA_PAGE_STR-REASN sy-vline 
WA_HRTMC_S_FORMCLASS_AGENDA_PAGE_STR-HISTO sy-vline 
WA_HRTMC_S_FORMCLASS_AGENDA_PAGE_STR-ITXNR sy-vline 
WA_HRTMC_S_FORMCLASS_AGENDA_PAGE_STR-DESCRIPTION sy-vline 
WA_HRTMC_S_FORMCLASS_AGENDA_PAGE_STR-TOPIC_ID sy-vline 
WA_HRTMC_S_FORMCLASS_AGENDA_PAGE_STR-PARENT_TOPIC_ID sy-vline 
WA_HRTMC_S_FORMCLASS_AGENDA_PAGE_STR-PREDEC_TOPIC_ID sy-vline 
WA_HRTMC_S_FORMCLASS_AGENDA_PAGE_STR-TOPIC_TYPE sy-vline 
WA_HRTMC_S_FORMCLASS_AGENDA_PAGE_STR-TABNR sy-vline      INTO ld_text SEPARATED BY SPACE.

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