ABAP Select data from SAP table /SAPCEM/HBEST into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP /SAPCEM/HBEST 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 /SAPCEM/HBEST. 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 /SAPCEM/HBEST 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_/SAPCEM/HBEST TYPE STANDARD TABLE OF /SAPCEM/HBEST,
      WA_/SAPCEM/HBEST TYPE /SAPCEM/HBEST,
      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: </SAPCEM/HBEST> TYPE /SAPCEM/HBEST.

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

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM /SAPCEM/HBEST
  INTO TABLE IT_/SAPCEM/HBEST.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM /SAPCEM/HBEST
*  INTO TABLE @DATA(IT_/SAPCEM/HBEST2).
*--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_/SAPCEM/HBEST INDEX 1 INTO DATA(WA_/SAPCEM/HBEST2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_/SAPCEM/HBEST ASSIGNING </SAPCEM/HBEST>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
</SAPCEM/HBEST>-J_3GPOSNRI = 1.
</SAPCEM/HBEST>-MANDT = 1.
</SAPCEM/HBEST>-J_3GBART = 1.
</SAPCEM/HBEST>-J_3GEMPFAE = 1.
</SAPCEM/HBEST>-J_3GAGEXT = 1.

ENDLOOP.

LOOP AT IT_/SAPCEM/HBEST INTO WA_/SAPCEM/HBEST.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_/SAPCEM/HBEST-J_3GWEEXT, sy-vline,
  WA_/SAPCEM/HBEST-J_3GRESTYP, sy-vline,
  WA_/SAPCEM/HBEST-J_3GRESSOU, sy-vline,
  WA_/SAPCEM/HBEST-J_3GLVART, sy-vline,
  WA_/SAPCEM/HBEST-J_3GDATVON, sy-vline,
  WA_/SAPCEM/HBEST-J_3GLFDNR, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_/SAPCEM/HBEST 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_/SAPCEM/HBEST 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_/SAPCEM/HBEST INTO WA_/SAPCEM/HBEST.


*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 J_3GEMPFAE
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_/SAPCEM/HBEST-J_3GEMPFAE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/SAPCEM/HBEST-J_3GEMPFAE.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field J_3GAGEXT
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_/SAPCEM/HBEST-J_3GAGEXT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/SAPCEM/HBEST-J_3GAGEXT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field J_3GWEEXT
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_/SAPCEM/HBEST-J_3GWEEXT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/SAPCEM/HBEST-J_3GWEEXT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field J_3GMEINS
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_/SAPCEM/HBEST-J_3GMEINS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/SAPCEM/HBEST-J_3GMEINS.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field J_3GBELZU
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_/SAPCEM/HBEST-J_3GBELZU
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/SAPCEM/HBEST-J_3GBELZU.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field J_3GBELAB
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_/SAPCEM/HBEST-J_3GBELAB
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/SAPCEM/HBEST-J_3GBELAB.
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_/SAPCEM/HBEST_STR, 
J_3GPOSNRI TYPE STRING,
MANDT TYPE STRING,
J_3GBART TYPE STRING,
J_3GEMPFAE TYPE STRING,
J_3GAGEXT TYPE STRING,
J_3GWEEXT TYPE STRING,
J_3GRESTYP TYPE STRING,
J_3GRESSOU TYPE STRING,
J_3GLVART TYPE STRING,
J_3GDATVON TYPE STRING,
J_3GLFDNR TYPE STRING,
J_3GSTORNO TYPE STRING,
J_3GMENGE TYPE STRING,
J_3GMEINS TYPE STRING,
J_3GDATBIS TYPE STRING,
J_3GDATZU TYPE STRING,
J_3GBELZU TYPE STRING,
J_3GPOSZU TYPE STRING,
J_3GDATAB TYPE STRING,
J_3GBELAB TYPE STRING,
J_3GPOSAB TYPE STRING,
J_3GABDATI TYPE STRING,
J_3GABDATE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_/SAPCEM/HBEST_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_/SAPCEM/HBEST_STR-J_3GPOSNRI sy-vline 
WA_/SAPCEM/HBEST_STR-MANDT sy-vline 
WA_/SAPCEM/HBEST_STR-J_3GBART sy-vline 
WA_/SAPCEM/HBEST_STR-J_3GEMPFAE sy-vline 
WA_/SAPCEM/HBEST_STR-J_3GAGEXT sy-vline 
WA_/SAPCEM/HBEST_STR-J_3GWEEXT sy-vline 
WA_/SAPCEM/HBEST_STR-J_3GRESTYP sy-vline 
WA_/SAPCEM/HBEST_STR-J_3GRESSOU sy-vline 
WA_/SAPCEM/HBEST_STR-J_3GLVART sy-vline 
WA_/SAPCEM/HBEST_STR-J_3GDATVON sy-vline 
WA_/SAPCEM/HBEST_STR-J_3GLFDNR sy-vline 
WA_/SAPCEM/HBEST_STR-J_3GSTORNO sy-vline 
WA_/SAPCEM/HBEST_STR-J_3GMENGE sy-vline 
WA_/SAPCEM/HBEST_STR-J_3GMEINS sy-vline 
WA_/SAPCEM/HBEST_STR-J_3GDATBIS sy-vline 
WA_/SAPCEM/HBEST_STR-J_3GDATZU sy-vline 
WA_/SAPCEM/HBEST_STR-J_3GBELZU sy-vline 
WA_/SAPCEM/HBEST_STR-J_3GPOSZU sy-vline 
WA_/SAPCEM/HBEST_STR-J_3GDATAB sy-vline 
WA_/SAPCEM/HBEST_STR-J_3GBELAB sy-vline 
WA_/SAPCEM/HBEST_STR-J_3GPOSAB sy-vline 
WA_/SAPCEM/HBEST_STR-J_3GABDATI sy-vline 
WA_/SAPCEM/HBEST_STR-J_3GABDATE sy-vline      INTO ld_text SEPARATED BY SPACE.

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