ABAP Select data from SAP table EWAEL_BATCHNRDETL into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP EWAEL_BATCHNRDETL 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_BATCHNRDETL. 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_BATCHNRDETL 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_BATCHNRDETL TYPE STANDARD TABLE OF EWAEL_BATCHNRDETL,
      WA_EWAEL_BATCHNRDETL TYPE EWAEL_BATCHNRDETL,
      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_BATCHNRDETL> TYPE EWAEL_BATCHNRDETL.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM EWAEL_BATCHNRDETL
*  INTO TABLE @DATA(IT_EWAEL_BATCHNRDETL2).
*--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_BATCHNRDETL INDEX 1 INTO DATA(WA_EWAEL_BATCHNRDETL2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<EWAEL_BATCHNRDETL>-QUANTITY1 = 1.
<EWAEL_BATCHNRDETL>-QUANTITYUNIT1 = 1.
<EWAEL_BATCHNRDETL>-QUANTITY2 = 1.
<EWAEL_BATCHNRDETL>-QUANTITYUNIT2 = 1.
<EWAEL_BATCHNRDETL>-QUANTITY3 = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_EWAEL_BATCHNRDETL-QUANTITYUNIT3, sy-vline,
  WA_EWAEL_BATCHNRDETL-QUANTITY4, sy-vline,
  WA_EWAEL_BATCHNRDETL-QUANTITYUNIT4, sy-vline,
  WA_EWAEL_BATCHNRDETL-QUANTITY5, sy-vline,
  WA_EWAEL_BATCHNRDETL-QUANTITYUNIT5, sy-vline,
  WA_EWAEL_BATCHNRDETL-QUANTITY6, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_EWAEL_BATCHNRDETL 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_BATCHNRDETL 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_BATCHNRDETL INTO WA_EWAEL_BATCHNRDETL.


*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 CUNIT, internal->external for field QUANTITYUNIT1
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_EWAEL_BATCHNRDETL-QUANTITYUNIT1
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_EWAEL_BATCHNRDETL-QUANTITYUNIT1.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field QUANTITYUNIT2
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_EWAEL_BATCHNRDETL-QUANTITYUNIT2
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_EWAEL_BATCHNRDETL-QUANTITYUNIT2.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field QUANTITYUNIT3
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_EWAEL_BATCHNRDETL-QUANTITYUNIT3
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_EWAEL_BATCHNRDETL-QUANTITYUNIT3.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field QUANTITYUNIT4
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_EWAEL_BATCHNRDETL-QUANTITYUNIT4
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_EWAEL_BATCHNRDETL-QUANTITYUNIT4.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field QUANTITYUNIT5
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_EWAEL_BATCHNRDETL-QUANTITYUNIT5
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_EWAEL_BATCHNRDETL-QUANTITYUNIT5.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field QUANTITYUNIT6
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_EWAEL_BATCHNRDETL-QUANTITYUNIT6
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_EWAEL_BATCHNRDETL-QUANTITYUNIT6.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field QUANTITYUNIT7
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_EWAEL_BATCHNRDETL-QUANTITYUNIT7
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_EWAEL_BATCHNRDETL-QUANTITYUNIT7.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field QUANTITYUNIT8
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_EWAEL_BATCHNRDETL-QUANTITYUNIT8
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_EWAEL_BATCHNRDETL-QUANTITYUNIT8.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field QUANTITYUNIT9
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_EWAEL_BATCHNRDETL-QUANTITYUNIT9
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_EWAEL_BATCHNRDETL-QUANTITYUNIT9.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field QUANTITYUNIT10
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_EWAEL_BATCHNRDETL-QUANTITYUNIT10
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_EWAEL_BATCHNRDETL-QUANTITYUNIT10.
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_BATCHNRDETL_STR, 
QUANTITY1 TYPE STRING,
QUANTITYUNIT1 TYPE STRING,
QUANTITY2 TYPE STRING,
QUANTITYUNIT2 TYPE STRING,
QUANTITY3 TYPE STRING,
QUANTITYUNIT3 TYPE STRING,
QUANTITY4 TYPE STRING,
QUANTITYUNIT4 TYPE STRING,
QUANTITY5 TYPE STRING,
QUANTITYUNIT5 TYPE STRING,
QUANTITY6 TYPE STRING,
QUANTITYUNIT6 TYPE STRING,
QUANTITY7 TYPE STRING,
QUANTITYUNIT7 TYPE STRING,
QUANTITY8 TYPE STRING,
QUANTITYUNIT8 TYPE STRING,
QUANTITY9 TYPE STRING,
QUANTITYUNIT9 TYPE STRING,
QUANTITY10 TYPE STRING,
QUANTITYUNIT10 TYPE STRING,END OF T_EKKO_STR.
DATA: WA_EWAEL_BATCHNRDETL_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_BATCHNRDETL_STR-QUANTITY1 sy-vline 
WA_EWAEL_BATCHNRDETL_STR-QUANTITYUNIT1 sy-vline 
WA_EWAEL_BATCHNRDETL_STR-QUANTITY2 sy-vline 
WA_EWAEL_BATCHNRDETL_STR-QUANTITYUNIT2 sy-vline 
WA_EWAEL_BATCHNRDETL_STR-QUANTITY3 sy-vline 
WA_EWAEL_BATCHNRDETL_STR-QUANTITYUNIT3 sy-vline 
WA_EWAEL_BATCHNRDETL_STR-QUANTITY4 sy-vline 
WA_EWAEL_BATCHNRDETL_STR-QUANTITYUNIT4 sy-vline 
WA_EWAEL_BATCHNRDETL_STR-QUANTITY5 sy-vline 
WA_EWAEL_BATCHNRDETL_STR-QUANTITYUNIT5 sy-vline 
WA_EWAEL_BATCHNRDETL_STR-QUANTITY6 sy-vline 
WA_EWAEL_BATCHNRDETL_STR-QUANTITYUNIT6 sy-vline 
WA_EWAEL_BATCHNRDETL_STR-QUANTITY7 sy-vline 
WA_EWAEL_BATCHNRDETL_STR-QUANTITYUNIT7 sy-vline 
WA_EWAEL_BATCHNRDETL_STR-QUANTITY8 sy-vline 
WA_EWAEL_BATCHNRDETL_STR-QUANTITYUNIT8 sy-vline 
WA_EWAEL_BATCHNRDETL_STR-QUANTITY9 sy-vline 
WA_EWAEL_BATCHNRDETL_STR-QUANTITYUNIT9 sy-vline 
WA_EWAEL_BATCHNRDETL_STR-QUANTITY10 sy-vline 
WA_EWAEL_BATCHNRDETL_STR-QUANTITYUNIT10 sy-vline      INTO ld_text SEPARATED BY SPACE.

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