ABAP Select data from SAP table THXS_REL_HRELS into internal table

Get Example source ABAP code based on a different SAP table
  Get ABAP code

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM THXS_REL_HRELS
*  INTO TABLE @DATA(IT_THXS_REL_HRELS2).
*--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_THXS_REL_HRELS INDEX 1 INTO DATA(WA_THXS_REL_HRELS2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<THXS_REL_HRELS>-TEXT = 1.
<THXS_REL_HRELS>-COMPANY_CODE = 1.
<THXS_REL_HRELS>-VAL_AREA = 1.
<THXS_REL_HRELS>-HREL_NUMBER = 1.
<THXS_REL_HRELS>-HREL_FISCAL_YEAR = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_THXS_REL_HRELS-HREL_DESCR, sy-vline,
  WA_THXS_REL_HRELS-HREL_VALID_FROM_DATE, sy-vline,
  WA_THXS_REL_HRELS-HREL_GROUPING_1, sy-vline,
  WA_THXS_REL_HRELS-HREL_GROUPING_2, sy-vline,
  WA_THXS_REL_HRELS-HREL_GROUPING_3, sy-vline,
  WA_THXS_REL_HRELS-HREL_HEDGING_AREA, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_THXS_REL_HRELS 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_THXS_REL_HRELS 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_THXS_REL_HRELS INTO WA_THXS_REL_HRELS.


*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 ALPHA, internal->external for field HREL_NUMBER
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_THXS_REL_HRELS-HREL_NUMBER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_THXS_REL_HRELS-HREL_NUMBER.
WRITE:/ 'New Value:', ld_input.

*Conversion exit GJAHR, internal->external for field HREL_FISCAL_YEAR
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_THXS_REL_HRELS-HREL_FISCAL_YEAR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_THXS_REL_HRELS-HREL_FISCAL_YEAR.
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_THXS_REL_HRELS_STR, 
TEXT TYPE STRING,
COMPANY_CODE TYPE STRING,
VAL_AREA TYPE STRING,
HREL_NUMBER TYPE STRING,
HREL_FISCAL_YEAR TYPE STRING,
HREL_DESCR TYPE STRING,
HREL_VALID_FROM_DATE TYPE STRING,
HREL_GROUPING_1 TYPE STRING,
HREL_GROUPING_2 TYPE STRING,
HREL_GROUPING_3 TYPE STRING,
HREL_HEDGING_AREA TYPE STRING,END OF T_EKKO_STR.
DATA: WA_THXS_REL_HRELS_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_THXS_REL_HRELS_STR-TEXT sy-vline 
WA_THXS_REL_HRELS_STR-COMPANY_CODE sy-vline 
WA_THXS_REL_HRELS_STR-VAL_AREA sy-vline 
WA_THXS_REL_HRELS_STR-HREL_NUMBER sy-vline 
WA_THXS_REL_HRELS_STR-HREL_FISCAL_YEAR sy-vline 
WA_THXS_REL_HRELS_STR-HREL_DESCR sy-vline 
WA_THXS_REL_HRELS_STR-HREL_VALID_FROM_DATE sy-vline 
WA_THXS_REL_HRELS_STR-HREL_GROUPING_1 sy-vline 
WA_THXS_REL_HRELS_STR-HREL_GROUPING_2 sy-vline 
WA_THXS_REL_HRELS_STR-HREL_GROUPING_3 sy-vline 
WA_THXS_REL_HRELS_STR-HREL_HEDGING_AREA sy-vline      INTO ld_text SEPARATED BY SPACE.

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