ABAP Select data from SAP table BAPIORDERHEAD into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM BAPIORDERHEAD
*  INTO TABLE @DATA(IT_BAPIORDERHEAD2).
*--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_BAPIORDERHEAD INDEX 1 INTO DATA(WA_BAPIORDERHEAD2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<BAPIORDERHEAD>-ORDERNR = 1.
<BAPIORDERHEAD>-ORDER_DATE = 1.
<BAPIORDERHEAD>-PLANED_START = 1.
<BAPIORDERHEAD>-PLANED_END = 1.
<BAPIORDERHEAD>-CAPAB = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_BAPIORDERHEAD-ROUTE, sy-vline,
  WA_BAPIORDERHEAD-WASTE_TYPE1, sy-vline,
  WA_BAPIORDERHEAD-EPREM_ORDER_TARG, sy-vline,
  WA_BAPIORDERHEAD-EVOL_ORDER_TARG, sy-vline,
  WA_BAPIORDERHEAD-VOL_UNIT_TARG, sy-vline,
  WA_BAPIORDERHEAD-VOL_UNIT_TARG_ISO, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_BAPIORDERHEAD 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_BAPIORDERHEAD 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_BAPIORDERHEAD INTO WA_BAPIORDERHEAD.


*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 ORDERNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_BAPIORDERHEAD-ORDERNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_BAPIORDERHEAD-ORDERNR.
WRITE:/ 'New Value:', ld_input.

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

*Conversion exit MATN1, internal->external for field WASTE_TYPE1
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_BAPIORDERHEAD-WASTE_TYPE1
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_BAPIORDERHEAD-WASTE_TYPE1.
WRITE:/ 'New Value:', ld_input.

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

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

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

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

*Conversion exit ALPHA, internal->external for field WDPLANT
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_BAPIORDERHEAD-WDPLANT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_BAPIORDERHEAD-WDPLANT.
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_BAPIORDERHEAD_STR, 
ORDERNR TYPE STRING,
ORDER_DATE TYPE STRING,
PLANED_START TYPE STRING,
PLANED_END TYPE STRING,
CAPAB TYPE STRING,
ROUTE TYPE STRING,
WASTE_TYPE1 TYPE STRING,
EPREM_ORDER_TARG TYPE STRING,
EVOL_ORDER_TARG TYPE STRING,
VOL_UNIT_TARG TYPE STRING,
VOL_UNIT_TARG_ISO TYPE STRING,
ECONT_ORDER_TARG TYPE STRING,
ETIME_ORDER_TARG TYPE STRING,
MEIZT_TARG TYPE STRING,
MEIZT_TARG_ISO TYPE STRING,
EDIST_ORDER_TARG TYPE STRING,
MEDST_TARG_ISO TYPE STRING,
MEDST_TARG TYPE STRING,
EWGHT_ORDER_TARG TYPE STRING,
WEIGHT_UNIT_TARG TYPE STRING,
WEIGHT_UNIT_TARG_ISO TYPE STRING,
EORDER_STATUS TYPE STRING,
WINTERLEVEL TYPE STRING,
DIFFCULT TYPE STRING,
WDPLANT TYPE STRING,
WASTE_WERKS TYPE STRING,
WASTE_LGORT TYPE STRING,
ORDERTXT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_BAPIORDERHEAD_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_BAPIORDERHEAD_STR-ORDERNR sy-vline 
WA_BAPIORDERHEAD_STR-ORDER_DATE sy-vline 
WA_BAPIORDERHEAD_STR-PLANED_START sy-vline 
WA_BAPIORDERHEAD_STR-PLANED_END sy-vline 
WA_BAPIORDERHEAD_STR-CAPAB sy-vline 
WA_BAPIORDERHEAD_STR-ROUTE sy-vline 
WA_BAPIORDERHEAD_STR-WASTE_TYPE1 sy-vline 
WA_BAPIORDERHEAD_STR-EPREM_ORDER_TARG sy-vline 
WA_BAPIORDERHEAD_STR-EVOL_ORDER_TARG sy-vline 
WA_BAPIORDERHEAD_STR-VOL_UNIT_TARG sy-vline 
WA_BAPIORDERHEAD_STR-VOL_UNIT_TARG_ISO sy-vline 
WA_BAPIORDERHEAD_STR-ECONT_ORDER_TARG sy-vline 
WA_BAPIORDERHEAD_STR-ETIME_ORDER_TARG sy-vline 
WA_BAPIORDERHEAD_STR-MEIZT_TARG sy-vline 
WA_BAPIORDERHEAD_STR-MEIZT_TARG_ISO sy-vline 
WA_BAPIORDERHEAD_STR-EDIST_ORDER_TARG sy-vline 
WA_BAPIORDERHEAD_STR-MEDST_TARG_ISO sy-vline 
WA_BAPIORDERHEAD_STR-MEDST_TARG sy-vline 
WA_BAPIORDERHEAD_STR-EWGHT_ORDER_TARG sy-vline 
WA_BAPIORDERHEAD_STR-WEIGHT_UNIT_TARG sy-vline 
WA_BAPIORDERHEAD_STR-WEIGHT_UNIT_TARG_ISO sy-vline 
WA_BAPIORDERHEAD_STR-EORDER_STATUS sy-vline 
WA_BAPIORDERHEAD_STR-WINTERLEVEL sy-vline 
WA_BAPIORDERHEAD_STR-DIFFCULT sy-vline 
WA_BAPIORDERHEAD_STR-WDPLANT sy-vline 
WA_BAPIORDERHEAD_STR-WASTE_WERKS sy-vline 
WA_BAPIORDERHEAD_STR-WASTE_LGORT sy-vline 
WA_BAPIORDERHEAD_STR-ORDERTXT sy-vline      INTO ld_text SEPARATED BY SPACE.

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