ABAP Select data from SAP table F4HLPINFO into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP F4HLPINFO 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 F4HLPINFO. 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 F4HLPINFO 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_F4HLPINFO TYPE STANDARD TABLE OF F4HLPINFO,
      WA_F4HLPINFO TYPE F4HLPINFO,
      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: <F4HLPINFO> TYPE F4HLPINFO.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_F4HLPINFO.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM F4HLPINFO
  INTO TABLE IT_F4HLPINFO.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM F4HLPINFO
*  INTO TABLE @DATA(IT_F4HLPINFO2).
*--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_F4HLPINFO INDEX 1 INTO DATA(WA_F4HLPINFO2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_F4HLPINFO ASSIGNING <F4HLPINFO>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<F4HLPINFO>-CALL = 1.
<F4HLPINFO>-OBJECT = 1.
<F4HLPINFO>-PROGRAM = 1.
<F4HLPINFO>-DYNPRO = 1.
<F4HLPINFO>-TABNAME = 1.

ENDLOOP.

LOOP AT IT_F4HLPINFO INTO WA_F4HLPINFO.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_F4HLPINFO-FIELDNAME, sy-vline,
  WA_F4HLPINFO-FIELDTYPE, sy-vline,
  WA_F4HLPINFO-KEYWORD, sy-vline,
  WA_F4HLPINFO-FIELDLNG, sy-vline,
  WA_F4HLPINFO-FLDVALUE, sy-vline,
  WA_F4HLPINFO-MCOBJ, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_F4HLPINFO 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_F4HLPINFO 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_F4HLPINFO INTO WA_F4HLPINFO.


*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 DTYPE, internal->external for field FIELDTYPE
CALL FUNCTION 'CONVERSION_EXIT_DTYPE_OUTPUT'
  EXPORTING
    input =                      WA_F4HLPINFO-FIELDTYPE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_F4HLPINFO-FIELDTYPE.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ISOLA, internal->external for field SPRAS
CALL FUNCTION 'CONVERSION_EXIT_ISOLA_OUTPUT'
  EXPORTING
    input =                      WA_F4HLPINFO-SPRAS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_F4HLPINFO-SPRAS.
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_F4HLPINFO_STR, 
CALL TYPE STRING,
OBJECT TYPE STRING,
PROGRAM TYPE STRING,
DYNPRO TYPE STRING,
TABNAME TYPE STRING,
FIELDNAME TYPE STRING,
FIELDTYPE TYPE STRING,
KEYWORD TYPE STRING,
FIELDLNG TYPE STRING,
FLDVALUE TYPE STRING,
MCOBJ TYPE STRING,
SPRAS TYPE STRING,
MENUFUNCT TYPE STRING,
MESSAGEID TYPE STRING,
MESSAGENR TYPE STRING,
MESSAGE TYPE STRING,
TITLE TYPE STRING,
DYNPROFLD TYPE STRING,
DYNPROFLAG TYPE STRING,
CHECKTABLE TYPE STRING,
CHECKFIELD TYPE STRING,
VALEXIST TYPE STRING,
TCODE TYPE STRING,
PFKEY TYPE STRING,
DOCUKEY TYPE STRING,
REPORT TYPE STRING,
DOCUID TYPE STRING,
DOCUOBJECT TYPE STRING,
HEADERTEXT TYPE STRING,
F1SYSHEL TYPE STRING,
MSGV1 TYPE STRING,
MSGV2 TYPE STRING,
MSGV3 TYPE STRING,
MSGV4 TYPE STRING,
SHOW TYPE STRING,
POV TYPE STRING,
CUROW TYPE STRING,
CUCOL TYPE STRING,
SY_DYN TYPE STRING,
DYNPPROG TYPE STRING,END OF T_EKKO_STR.
DATA: WA_F4HLPINFO_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_F4HLPINFO_STR-CALL sy-vline 
WA_F4HLPINFO_STR-OBJECT sy-vline 
WA_F4HLPINFO_STR-PROGRAM sy-vline 
WA_F4HLPINFO_STR-DYNPRO sy-vline 
WA_F4HLPINFO_STR-TABNAME sy-vline 
WA_F4HLPINFO_STR-FIELDNAME sy-vline 
WA_F4HLPINFO_STR-FIELDTYPE sy-vline 
WA_F4HLPINFO_STR-KEYWORD sy-vline 
WA_F4HLPINFO_STR-FIELDLNG sy-vline 
WA_F4HLPINFO_STR-FLDVALUE sy-vline 
WA_F4HLPINFO_STR-MCOBJ sy-vline 
WA_F4HLPINFO_STR-SPRAS sy-vline 
WA_F4HLPINFO_STR-MENUFUNCT sy-vline 
WA_F4HLPINFO_STR-MESSAGEID sy-vline 
WA_F4HLPINFO_STR-MESSAGENR sy-vline 
WA_F4HLPINFO_STR-MESSAGE sy-vline 
WA_F4HLPINFO_STR-TITLE sy-vline 
WA_F4HLPINFO_STR-DYNPROFLD sy-vline 
WA_F4HLPINFO_STR-DYNPROFLAG sy-vline 
WA_F4HLPINFO_STR-CHECKTABLE sy-vline 
WA_F4HLPINFO_STR-CHECKFIELD sy-vline 
WA_F4HLPINFO_STR-VALEXIST sy-vline 
WA_F4HLPINFO_STR-TCODE sy-vline 
WA_F4HLPINFO_STR-PFKEY sy-vline 
WA_F4HLPINFO_STR-DOCUKEY sy-vline 
WA_F4HLPINFO_STR-REPORT sy-vline 
WA_F4HLPINFO_STR-DOCUID sy-vline 
WA_F4HLPINFO_STR-DOCUOBJECT sy-vline 
WA_F4HLPINFO_STR-HEADERTEXT sy-vline 
WA_F4HLPINFO_STR-F1SYSHEL sy-vline 
WA_F4HLPINFO_STR-MSGV1 sy-vline 
WA_F4HLPINFO_STR-MSGV2 sy-vline 
WA_F4HLPINFO_STR-MSGV3 sy-vline 
WA_F4HLPINFO_STR-MSGV4 sy-vline 
WA_F4HLPINFO_STR-SHOW sy-vline 
WA_F4HLPINFO_STR-POV sy-vline 
WA_F4HLPINFO_STR-CUROW sy-vline 
WA_F4HLPINFO_STR-CUCOL sy-vline 
WA_F4HLPINFO_STR-SY_DYN sy-vline 
WA_F4HLPINFO_STR-DYNPPROG sy-vline      INTO ld_text SEPARATED BY SPACE.

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