ABAP Select data from SAP table HRT1783 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP HRT1783 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 HRT1783. 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 HRT1783 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_HRT1783 TYPE STANDARD TABLE OF HRT1783,
      WA_HRT1783 TYPE HRT1783,
      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: <HRT1783> TYPE HRT1783.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_HRT1783.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM HRT1783
  INTO TABLE IT_HRT1783.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM HRT1783
*  INTO TABLE @DATA(IT_HRT17832).
*--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_HRT1783 INDEX 1 INTO DATA(WA_HRT17832).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_HRT1783 ASSIGNING <HRT1783>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<HRT1783>-MANDT = 1.
<HRT1783>-TABNR = 1.
<HRT1783>-TABSEQNR = 1.
<HRT1783>-CHOICE_NO = 1.
<HRT1783>-INSTITUTION = 1.

ENDLOOP.

LOOP AT IT_HRT1783 INTO WA_HRT1783.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_HRT1783-COURSE, sy-vline,
  WA_HRT1783-SC_OBJID, sy-vline,
  WA_HRT1783-CAMPUS, sy-vline,
  WA_HRT1783-FACULTY, sy-vline,
  WA_HRT1783-DECISION, sy-vline,
  WA_HRT1783-REPLY, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_HRT1783 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_HRT1783 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_HRT1783 INTO WA_HRT1783.


*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_HRT1783_STR, 
MANDT TYPE STRING,
TABNR TYPE STRING,
TABSEQNR TYPE STRING,
CHOICE_NO TYPE STRING,
INSTITUTION TYPE STRING,
COURSE TYPE STRING,
SC_OBJID TYPE STRING,
CAMPUS TYPE STRING,
FACULTY TYPE STRING,
DECISION TYPE STRING,
REPLY TYPE STRING,
CONDITIONS TYPE STRING,
ENTRY_DATE TYPE STRING,
CHOICE_CANCEL TYPE STRING,
AEDTM_UCAS TYPE STRING,
UCAS_ACTION TYPE STRING,
SUBSTITUTION TYPE STRING,
AMENDMENT TYPE STRING,
PREV_COURSE TYPE STRING,
CONF_STATUS TYPE STRING,
CONF_HIST TYPE STRING,
ENTRY_POINT TYPE STRING,
INTERV_PRIO TYPE STRING,
HOME_INDIC TYPE STRING,
AEDTM_INST TYPE STRING,
UNAME_INST TYPE STRING,
COURSE_INST TYPE STRING,
CAMPUS_INST TYPE STRING,
ENTRY_MONTH_INST TYPE STRING,
ENTRY_YEAR_INST TYPE STRING,
ENTRY_POINT_INST TYPE STRING,
TRANSACTION_INST TYPE STRING,
DECISION_INST TYPE STRING,
CONDITIONS_INST1 TYPE STRING,
CONDITIONS_INST2 TYPE STRING,
CONDITIONS_INST3 TYPE STRING,
ADJ_STATUS TYPE STRING,
INTERVIEW_DATE TYPE STRING,
INTERVIEW_RESP TYPE STRING,
YR_APPLIED TYPE STRING,
APPL_SCHEME_CODE TYPE STRING,
DEFER_ENTRY TYPE STRING,
INSTDESCDATE TYPE STRING,
REFDATE TYPE STRING,
OFFER_LEVEL TYPE STRING,
POTENTIAL_LEVEL TYPE STRING,
CWD_FLAG_T TYPE STRING,
CWD_DATE_T TYPE STRING,
CRIMINAL_REC_DEC TYPE STRING,
ROUNDNUMBER TYPE STRING,END OF T_EKKO_STR.
DATA: WA_HRT1783_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_HRT1783_STR-MANDT sy-vline 
WA_HRT1783_STR-TABNR sy-vline 
WA_HRT1783_STR-TABSEQNR sy-vline 
WA_HRT1783_STR-CHOICE_NO sy-vline 
WA_HRT1783_STR-INSTITUTION sy-vline 
WA_HRT1783_STR-COURSE sy-vline 
WA_HRT1783_STR-SC_OBJID sy-vline 
WA_HRT1783_STR-CAMPUS sy-vline 
WA_HRT1783_STR-FACULTY sy-vline 
WA_HRT1783_STR-DECISION sy-vline 
WA_HRT1783_STR-REPLY sy-vline 
WA_HRT1783_STR-CONDITIONS sy-vline 
WA_HRT1783_STR-ENTRY_DATE sy-vline 
WA_HRT1783_STR-CHOICE_CANCEL sy-vline 
WA_HRT1783_STR-AEDTM_UCAS sy-vline 
WA_HRT1783_STR-UCAS_ACTION sy-vline 
WA_HRT1783_STR-SUBSTITUTION sy-vline 
WA_HRT1783_STR-AMENDMENT sy-vline 
WA_HRT1783_STR-PREV_COURSE sy-vline 
WA_HRT1783_STR-CONF_STATUS sy-vline 
WA_HRT1783_STR-CONF_HIST sy-vline 
WA_HRT1783_STR-ENTRY_POINT sy-vline 
WA_HRT1783_STR-INTERV_PRIO sy-vline 
WA_HRT1783_STR-HOME_INDIC sy-vline 
WA_HRT1783_STR-AEDTM_INST sy-vline 
WA_HRT1783_STR-UNAME_INST sy-vline 
WA_HRT1783_STR-COURSE_INST sy-vline 
WA_HRT1783_STR-CAMPUS_INST sy-vline 
WA_HRT1783_STR-ENTRY_MONTH_INST sy-vline 
WA_HRT1783_STR-ENTRY_YEAR_INST sy-vline 
WA_HRT1783_STR-ENTRY_POINT_INST sy-vline 
WA_HRT1783_STR-TRANSACTION_INST sy-vline 
WA_HRT1783_STR-DECISION_INST sy-vline 
WA_HRT1783_STR-CONDITIONS_INST1 sy-vline 
WA_HRT1783_STR-CONDITIONS_INST2 sy-vline 
WA_HRT1783_STR-CONDITIONS_INST3 sy-vline 
WA_HRT1783_STR-ADJ_STATUS sy-vline 
WA_HRT1783_STR-INTERVIEW_DATE sy-vline 
WA_HRT1783_STR-INTERVIEW_RESP sy-vline 
WA_HRT1783_STR-YR_APPLIED sy-vline 
WA_HRT1783_STR-APPL_SCHEME_CODE sy-vline 
WA_HRT1783_STR-DEFER_ENTRY sy-vline 
WA_HRT1783_STR-INSTDESCDATE sy-vline 
WA_HRT1783_STR-REFDATE sy-vline 
WA_HRT1783_STR-OFFER_LEVEL sy-vline 
WA_HRT1783_STR-POTENTIAL_LEVEL sy-vline 
WA_HRT1783_STR-CWD_FLAG_T sy-vline 
WA_HRT1783_STR-CWD_DATE_T sy-vline 
WA_HRT1783_STR-CRIMINAL_REC_DEC sy-vline 
WA_HRT1783_STR-ROUNDNUMBER sy-vline      INTO ld_text SEPARATED BY SPACE.

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