ABAP Select data from SAP table EWA_ORDER_RESOURCE into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM EWA_ORDER_RESOURCE
*  INTO TABLE @DATA(IT_EWA_ORDER_RESOURCE2).
*--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_EWA_ORDER_RESOURCE INDEX 1 INTO DATA(WA_EWA_ORDER_RESOURCE2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<EWA_ORDER_RESOURCE>-FLEET_CAT = 1.
<EWA_ORDER_RESOURCE>-FLEET_EQUNR = 1.
<EWA_ORDER_RESOURCE>-FLEET2_CAT = 1.
<EWA_ORDER_RESOURCE>-FLEET2_EQUNR = 1.
<EWA_ORDER_RESOURCE>-FLEET3_CAT = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_EWA_ORDER_RESOURCE-FLEET3_EQUNR, sy-vline,
  WA_EWA_ORDER_RESOURCE-ARBID, sy-vline,
  WA_EWA_ORDER_RESOURCE-ARBPL, sy-vline,
  WA_EWA_ORDER_RESOURCE-WERKS, sy-vline,
  WA_EWA_ORDER_RESOURCE-ARBID2, sy-vline,
  WA_EWA_ORDER_RESOURCE-ARBPL2, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_EWA_ORDER_RESOURCE 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_EWA_ORDER_RESOURCE 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_EWA_ORDER_RESOURCE INTO WA_EWA_ORDER_RESOURCE.


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

*Conversion exit ALPHA, internal->external for field FLEET2_EQUNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_EWA_ORDER_RESOURCE-FLEET2_EQUNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_EWA_ORDER_RESOURCE-FLEET2_EQUNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field FLEET3_EQUNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_EWA_ORDER_RESOURCE-FLEET3_EQUNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_EWA_ORDER_RESOURCE-FLEET3_EQUNR.
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_EWA_ORDER_RESOURCE_STR, 
FLEET_CAT TYPE STRING,
FLEET_EQUNR TYPE STRING,
FLEET2_CAT TYPE STRING,
FLEET2_EQUNR TYPE STRING,
FLEET3_CAT TYPE STRING,
FLEET3_EQUNR TYPE STRING,
ARBID TYPE STRING,
ARBPL TYPE STRING,
WERKS TYPE STRING,
ARBID2 TYPE STRING,
ARBPL2 TYPE STRING,
WERKS2 TYPE STRING,
ARBID3 TYPE STRING,
ARBPL3 TYPE STRING,
WERKS3 TYPE STRING,END OF T_EKKO_STR.
DATA: WA_EWA_ORDER_RESOURCE_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_EWA_ORDER_RESOURCE_STR-FLEET_CAT sy-vline 
WA_EWA_ORDER_RESOURCE_STR-FLEET_EQUNR sy-vline 
WA_EWA_ORDER_RESOURCE_STR-FLEET2_CAT sy-vline 
WA_EWA_ORDER_RESOURCE_STR-FLEET2_EQUNR sy-vline 
WA_EWA_ORDER_RESOURCE_STR-FLEET3_CAT sy-vline 
WA_EWA_ORDER_RESOURCE_STR-FLEET3_EQUNR sy-vline 
WA_EWA_ORDER_RESOURCE_STR-ARBID sy-vline 
WA_EWA_ORDER_RESOURCE_STR-ARBPL sy-vline 
WA_EWA_ORDER_RESOURCE_STR-WERKS sy-vline 
WA_EWA_ORDER_RESOURCE_STR-ARBID2 sy-vline 
WA_EWA_ORDER_RESOURCE_STR-ARBPL2 sy-vline 
WA_EWA_ORDER_RESOURCE_STR-WERKS2 sy-vline 
WA_EWA_ORDER_RESOURCE_STR-ARBID3 sy-vline 
WA_EWA_ORDER_RESOURCE_STR-ARBPL3 sy-vline 
WA_EWA_ORDER_RESOURCE_STR-WERKS3 sy-vline      INTO ld_text SEPARATED BY SPACE.

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