ABAP Select data from SAP table EWAEL_SDORDERPOS into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM EWAEL_SDORDERPOS
*  INTO TABLE @DATA(IT_EWAEL_SDORDERPOS2).
*--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_EWAEL_SDORDERPOS INDEX 1 INTO DATA(WA_EWAEL_SDORDERPOS2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<EWAEL_SDORDERPOS>-WASTE = 1.
<EWAEL_SDORDERPOS>-QUANTITY = 1.
<EWAEL_SDORDERPOS>-QUANTITYUNIT = 1.
<EWAEL_SDORDERPOS>-TREATMENT = 1.
<EWAEL_SDORDERPOS>-POSNR = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_EWAEL_SDORDERPOS-NETWR, sy-vline,
  WA_EWAEL_SDORDERPOS-KBETR, sy-vline,
  WA_EWAEL_SDORDERPOS-MWSBP, sy-vline,
  WA_EWAEL_SDORDERPOS-WAERS, sy-vline,
  WA_EWAEL_SDORDERPOS-LGTYP, sy-vline,
  WA_EWAEL_SDORDERPOS-LGPLA, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_EWAEL_SDORDERPOS 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_EWAEL_SDORDERPOS 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_EWAEL_SDORDERPOS INTO WA_EWAEL_SDORDERPOS.


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

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

*Conversion exit ALPHA, internal->external for field WDPLANTNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_EWAEL_SDORDERPOS-WDPLANTNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_EWAEL_SDORDERPOS-WDPLANTNR.
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_EWAEL_SDORDERPOS_STR, 
WASTE TYPE STRING,
QUANTITY TYPE STRING,
QUANTITYUNIT TYPE STRING,
TREATMENT TYPE STRING,
POSNR TYPE STRING,
NETWR TYPE STRING,
KBETR TYPE STRING,
MWSBP TYPE STRING,
WAERS TYPE STRING,
LGTYP TYPE STRING,
LGPLA TYPE STRING,
LGNUM TYPE STRING,
BWART TYPE STRING,
CHARG TYPE STRING,
SKIP_LGORT TYPE STRING,
STCK_TYPE TYPE STRING,
WERKS TYPE STRING,
LGORT TYPE STRING,
USE_SD_DATA TYPE STRING,
ITEM_TEXT TYPE STRING,
LINE_ID TYPE STRING,
WDPLANTNR TYPE STRING,END OF T_EKKO_STR.
DATA: WA_EWAEL_SDORDERPOS_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_EWAEL_SDORDERPOS_STR-WASTE sy-vline 
WA_EWAEL_SDORDERPOS_STR-QUANTITY sy-vline 
WA_EWAEL_SDORDERPOS_STR-QUANTITYUNIT sy-vline 
WA_EWAEL_SDORDERPOS_STR-TREATMENT sy-vline 
WA_EWAEL_SDORDERPOS_STR-POSNR sy-vline 
WA_EWAEL_SDORDERPOS_STR-NETWR sy-vline 
WA_EWAEL_SDORDERPOS_STR-KBETR sy-vline 
WA_EWAEL_SDORDERPOS_STR-MWSBP sy-vline 
WA_EWAEL_SDORDERPOS_STR-WAERS sy-vline 
WA_EWAEL_SDORDERPOS_STR-LGTYP sy-vline 
WA_EWAEL_SDORDERPOS_STR-LGPLA sy-vline 
WA_EWAEL_SDORDERPOS_STR-LGNUM sy-vline 
WA_EWAEL_SDORDERPOS_STR-BWART sy-vline 
WA_EWAEL_SDORDERPOS_STR-CHARG sy-vline 
WA_EWAEL_SDORDERPOS_STR-SKIP_LGORT sy-vline 
WA_EWAEL_SDORDERPOS_STR-STCK_TYPE sy-vline 
WA_EWAEL_SDORDERPOS_STR-WERKS sy-vline 
WA_EWAEL_SDORDERPOS_STR-LGORT sy-vline 
WA_EWAEL_SDORDERPOS_STR-USE_SD_DATA sy-vline 
WA_EWAEL_SDORDERPOS_STR-ITEM_TEXT sy-vline 
WA_EWAEL_SDORDERPOS_STR-LINE_ID sy-vline 
WA_EWAEL_SDORDERPOS_STR-WDPLANTNR sy-vline      INTO ld_text SEPARATED BY SPACE.

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