ABAP Select data from SAP table SETHIERBUFFER into internal table

Get Example source ABAP code based on a different SAP table
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Below is a number of ABAP code snippets to demonstrate how to select data from SAP SETHIERBUFFER 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 SETHIERBUFFER. 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 SETHIERBUFFER 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_SETHIERBUFFER TYPE STANDARD TABLE OF SETHIERBUFFER,
      WA_SETHIERBUFFER TYPE SETHIERBUFFER,
      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: <SETHIERBUFFER> TYPE SETHIERBUFFER.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM SETHIERBUFFER
*  INTO TABLE @DATA(IT_SETHIERBUFFER2).
*--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_SETHIERBUFFER INDEX 1 INTO DATA(WA_SETHIERBUFFER2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<SETHIERBUFFER>-LEVEL = 1.
<SETHIERBUFFER>-FIELDNAME = 1.
<SETHIERBUFFER>-SETID = 1.
<SETHIERBUFFER>-TYPE = 1.
<SETHIERBUFFER>-XDYNAMIC = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_SETHIERBUFFER-XSUPPRESS, sy-vline,
  WA_SETHIERBUFFER-XUNIQ, sy-vline,
  WA_SETHIERBUFFER-VCOUNT, sy-vline,
  WA_SETHIERBUFFER-TABNAME, sy-vline,
  WA_SETHIERBUFFER-LNAME, sy-vline,
  WA_SETHIERBUFFER-AUTHGR, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_SETHIERBUFFER 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_SETHIERBUFFER 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_SETHIERBUFFER INTO WA_SETHIERBUFFER.


*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 ISOLA, internal->external for field SET_OLANGU
CALL FUNCTION 'CONVERSION_EXIT_ISOLA_OUTPUT'
  EXPORTING
    input =                      WA_SETHIERBUFFER-SET_OLANGU
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_SETHIERBUFFER-SET_OLANGU.
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_SETHIERBUFFER_STR, 
LEVEL TYPE STRING,
FIELDNAME TYPE STRING,
SETID TYPE STRING,
TYPE TYPE STRING,
XDYNAMIC TYPE STRING,
XSUPPRESS TYPE STRING,
XUNIQ TYPE STRING,
VCOUNT TYPE STRING,
TABNAME TYPE STRING,
LNAME TYPE STRING,
AUTHGR TYPE STRING,
CREUSER TYPE STRING,
CREDATE TYPE STRING,
CRETIME TYPE STRING,
UPDUSER TYPE STRING,
UPDDATE TYPE STRING,
UPDTIME TYPE STRING,
RVALUE TYPE STRING,
SAPRL TYPE STRING,
SEARCHFLD TYPE STRING,
VARIABLE TYPE STRING,
SNAME TYPE STRING,
PRTCLASS TYPE STRING,
PMFLAG TYPE STRING,
DESCRIPT TYPE STRING,
SETCLASS TYPE STRING,
SHORTNAME TYPE STRING,
KOKRS TYPE STRING,
KTOPL TYPE STRING,
LIB TYPE STRING,
RNAME TYPE STRING,
ECCS_DIMEN TYPE STRING,
ECCS_ITCLG TYPE STRING,
ECCS_SITYP TYPE STRING,
FIKRS TYPE STRING,
SUBCLASS TYPE STRING,
ROLLNAME TYPE STRING,
SET_OLANGU TYPE STRING,
OLD_LINE TYPE STRING,
SETID_REF TYPE STRING,
NO_VALUES TYPE STRING,
NO_RWSLINE TYPE STRING,
MAX_HIER_LEVEL TYPE STRING,
DESCR_READ TYPE STRING,
RW_INFO_READ TYPE STRING,
LFIELDNAME TYPE STRING,
HPRTCLASS TYPE STRING,
VAL_INDEX TYPE STRING,
SET TYPE STRING,END OF T_EKKO_STR.
DATA: WA_SETHIERBUFFER_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_SETHIERBUFFER_STR-LEVEL sy-vline 
WA_SETHIERBUFFER_STR-FIELDNAME sy-vline 
WA_SETHIERBUFFER_STR-SETID sy-vline 
WA_SETHIERBUFFER_STR-TYPE sy-vline 
WA_SETHIERBUFFER_STR-XDYNAMIC sy-vline 
WA_SETHIERBUFFER_STR-XSUPPRESS sy-vline 
WA_SETHIERBUFFER_STR-XUNIQ sy-vline 
WA_SETHIERBUFFER_STR-VCOUNT sy-vline 
WA_SETHIERBUFFER_STR-TABNAME sy-vline 
WA_SETHIERBUFFER_STR-LNAME sy-vline 
WA_SETHIERBUFFER_STR-AUTHGR sy-vline 
WA_SETHIERBUFFER_STR-CREUSER sy-vline 
WA_SETHIERBUFFER_STR-CREDATE sy-vline 
WA_SETHIERBUFFER_STR-CRETIME sy-vline 
WA_SETHIERBUFFER_STR-UPDUSER sy-vline 
WA_SETHIERBUFFER_STR-UPDDATE sy-vline 
WA_SETHIERBUFFER_STR-UPDTIME sy-vline 
WA_SETHIERBUFFER_STR-RVALUE sy-vline 
WA_SETHIERBUFFER_STR-SAPRL sy-vline 
WA_SETHIERBUFFER_STR-SEARCHFLD sy-vline 
WA_SETHIERBUFFER_STR-VARIABLE sy-vline 
WA_SETHIERBUFFER_STR-SNAME sy-vline 
WA_SETHIERBUFFER_STR-PRTCLASS sy-vline 
WA_SETHIERBUFFER_STR-PMFLAG sy-vline 
WA_SETHIERBUFFER_STR-DESCRIPT sy-vline 
WA_SETHIERBUFFER_STR-SETCLASS sy-vline 
WA_SETHIERBUFFER_STR-SHORTNAME sy-vline 
WA_SETHIERBUFFER_STR-KOKRS sy-vline 
WA_SETHIERBUFFER_STR-KTOPL sy-vline 
WA_SETHIERBUFFER_STR-LIB sy-vline 
WA_SETHIERBUFFER_STR-RNAME sy-vline 
WA_SETHIERBUFFER_STR-ECCS_DIMEN sy-vline 
WA_SETHIERBUFFER_STR-ECCS_ITCLG sy-vline 
WA_SETHIERBUFFER_STR-ECCS_SITYP sy-vline 
WA_SETHIERBUFFER_STR-FIKRS sy-vline 
WA_SETHIERBUFFER_STR-SUBCLASS sy-vline 
WA_SETHIERBUFFER_STR-ROLLNAME sy-vline 
WA_SETHIERBUFFER_STR-SET_OLANGU sy-vline 
WA_SETHIERBUFFER_STR-OLD_LINE sy-vline 
WA_SETHIERBUFFER_STR-SETID_REF sy-vline 
WA_SETHIERBUFFER_STR-NO_VALUES sy-vline 
WA_SETHIERBUFFER_STR-NO_RWSLINE sy-vline 
WA_SETHIERBUFFER_STR-MAX_HIER_LEVEL sy-vline 
WA_SETHIERBUFFER_STR-DESCR_READ sy-vline 
WA_SETHIERBUFFER_STR-RW_INFO_READ sy-vline 
WA_SETHIERBUFFER_STR-LFIELDNAME sy-vline 
WA_SETHIERBUFFER_STR-HPRTCLASS sy-vline 
WA_SETHIERBUFFER_STR-VAL_INDEX sy-vline 
WA_SETHIERBUFFER_STR-SET sy-vline      INTO ld_text SEPARATED BY SPACE.

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