ABAP Select data from SAP table HRT1773 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP HRT1773 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 HRT1773. 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 HRT1773 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_HRT1773 TYPE STANDARD TABLE OF HRT1773,
      WA_HRT1773 TYPE HRT1773,
      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: <HRT1773> TYPE HRT1773.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_HRT1773.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM HRT1773
  INTO TABLE IT_HRT1773.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM HRT1773
*  INTO TABLE @DATA(IT_HRT17732).
*--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_HRT1773 INDEX 1 INTO DATA(WA_HRT17732).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_HRT1773 ASSIGNING <HRT1773>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<HRT1773>-MANDT = 1.
<HRT1773>-TABNR = 1.
<HRT1773>-TABSEQNR = 1.
<HRT1773>-EDID = 1.
<HRT1773>-ISSEO_SU = 1.

ENDLOOP.

LOOP AT IT_HRT1773 INTO WA_HRT1773.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_HRT1773-TRANS_GUID_SU, sy-vline,
  WA_HRT1773-TRTYPE_SU, sy-vline,
  WA_HRT1773-COURSEID, sy-vline,
  WA_HRT1773-INTGRADE, sy-vline,
  WA_HRT1773-INTGRADENORM, sy-vline,
  WA_HRT1773-INTGRADESCALE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_HRT1773 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_HRT1773 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_HRT1773 INTO WA_HRT1773.


*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 INTCOCREDTYPE
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_HRT1773-INTCOCREDTYPE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_HRT1773-INTCOCREDTYPE.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field CPUNIT_SM
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_HRT1773-CPUNIT_SM
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_HRT1773-CPUNIT_SM.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field CPUNIT_CQ
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_HRT1773-CPUNIT_CQ
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_HRT1773-CPUNIT_CQ.
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_HRT1773_STR, 
MANDT TYPE STRING,
TABNR TYPE STRING,
TABSEQNR TYPE STRING,
EDID TYPE STRING,
ISSEO_SU TYPE STRING,
TRANS_GUID_SU TYPE STRING,
TRTYPE_SU TYPE STRING,
COURSEID TYPE STRING,
INTGRADE TYPE STRING,
INTGRADENORM TYPE STRING,
INTGRADESCALE TYPE STRING,
INTCOATMCRED TYPE STRING,
INTCOGRDCRED TYPE STRING,
INTCOERNCRED TYPE STRING,
INTCOCREDTYPE TYPE STRING,
ISSEO_EQ TYPE STRING,
TRANS_GUID_EQ TYPE STRING,
TRTYPE_EQ TYPE STRING,
DEGREEID_EQ TYPE STRING,
DEGEXTGRADE TYPE STRING,
DEGEXTGRADENORM TYPE STRING,
DEGEXTSCALEID TYPE STRING,
MODULEID TYPE STRING,
NORM_VAL_SM TYPE STRING,
CPATTEMP TYPE STRING,
CPGAINED_SM TYPE STRING,
CPUNIT_SM TYPE STRING,
CHARGEFREE TYPE STRING,
ALT_SCALEID TYPE STRING,
SMRATING TYPE STRING,
VARID TYPE STRING,
PERID TYPE STRING,
PERYR TYPE STRING,
DEGREEID_CQ TYPE STRING,
CPGAINED_CQ TYPE STRING,
CPUNIT_CQ TYPE STRING,
NORM_VAL_CQ TYPE STRING,
CQRATING TYPE STRING,END OF T_EKKO_STR.
DATA: WA_HRT1773_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_HRT1773_STR-MANDT sy-vline 
WA_HRT1773_STR-TABNR sy-vline 
WA_HRT1773_STR-TABSEQNR sy-vline 
WA_HRT1773_STR-EDID sy-vline 
WA_HRT1773_STR-ISSEO_SU sy-vline 
WA_HRT1773_STR-TRANS_GUID_SU sy-vline 
WA_HRT1773_STR-TRTYPE_SU sy-vline 
WA_HRT1773_STR-COURSEID sy-vline 
WA_HRT1773_STR-INTGRADE sy-vline 
WA_HRT1773_STR-INTGRADENORM sy-vline 
WA_HRT1773_STR-INTGRADESCALE sy-vline 
WA_HRT1773_STR-INTCOATMCRED sy-vline 
WA_HRT1773_STR-INTCOGRDCRED sy-vline 
WA_HRT1773_STR-INTCOERNCRED sy-vline 
WA_HRT1773_STR-INTCOCREDTYPE sy-vline 
WA_HRT1773_STR-ISSEO_EQ sy-vline 
WA_HRT1773_STR-TRANS_GUID_EQ sy-vline 
WA_HRT1773_STR-TRTYPE_EQ sy-vline 
WA_HRT1773_STR-DEGREEID_EQ sy-vline 
WA_HRT1773_STR-DEGEXTGRADE sy-vline 
WA_HRT1773_STR-DEGEXTGRADENORM sy-vline 
WA_HRT1773_STR-DEGEXTSCALEID sy-vline 
WA_HRT1773_STR-MODULEID sy-vline 
WA_HRT1773_STR-NORM_VAL_SM sy-vline 
WA_HRT1773_STR-CPATTEMP sy-vline 
WA_HRT1773_STR-CPGAINED_SM sy-vline 
WA_HRT1773_STR-CPUNIT_SM sy-vline 
WA_HRT1773_STR-CHARGEFREE sy-vline 
WA_HRT1773_STR-ALT_SCALEID sy-vline 
WA_HRT1773_STR-SMRATING sy-vline 
WA_HRT1773_STR-VARID sy-vline 
WA_HRT1773_STR-PERID sy-vline 
WA_HRT1773_STR-PERYR sy-vline 
WA_HRT1773_STR-DEGREEID_CQ sy-vline 
WA_HRT1773_STR-CPGAINED_CQ sy-vline 
WA_HRT1773_STR-CPUNIT_CQ sy-vline 
WA_HRT1773_STR-NORM_VAL_CQ sy-vline 
WA_HRT1773_STR-CQRATING sy-vline      INTO ld_text SEPARATED BY SPACE.

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