ABAP Select data from SAP table EWASWA_WEIGHDMRPOS_DET into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM EWASWA_WEIGHDMRPOS_DET
*  INTO TABLE @DATA(IT_EWASWA_WEIGHDMRPOS_DET2).
*--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_EWASWA_WEIGHDMRPOS_DET INDEX 1 INTO DATA(WA_EWASWA_WEIGHDMRPOS_DET2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<EWASWA_WEIGHDMRPOS_DET>-MANDT = 1.
<EWASWA_WEIGHDMRPOS_DET>-WEIGHINGNR = 1.
<EWASWA_WEIGHDMRPOS_DET>-LAUFNR = 1.
<EWASWA_WEIGHDMRPOS_DET>-VBELN = 1.
<EWASWA_WEIGHDMRPOS_DET>-POSNR = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_EWASWA_WEIGHDMRPOS_DET-MATNR, sy-vline,
  WA_EWASWA_WEIGHDMRPOS_DET-PSTYV, sy-vline,
  WA_EWASWA_WEIGHDMRPOS_DET-ZMENG, sy-vline,
  WA_EWASWA_WEIGHDMRPOS_DET-ZIEME, sy-vline,
  WA_EWASWA_WEIGHDMRPOS_DET-ARKTX, sy-vline,
  WA_EWASWA_WEIGHDMRPOS_DET-SRC_POSNR, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_EWASWA_WEIGHDMRPOS_DET 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_EWASWA_WEIGHDMRPOS_DET 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_EWASWA_WEIGHDMRPOS_DET INTO WA_EWASWA_WEIGHDMRPOS_DET.


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

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

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

*Conversion exit CUNIT, internal->external for field ZIEME
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_EWASWA_WEIGHDMRPOS_DET-ZIEME
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_EWASWA_WEIGHDMRPOS_DET-ZIEME.
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_EWASWA_WEIGHDMRPOS_DET_STR, 
MANDT TYPE STRING,
WEIGHINGNR TYPE STRING,
LAUFNR TYPE STRING,
VBELN TYPE STRING,
POSNR TYPE STRING,
MATNR TYPE STRING,
PSTYV TYPE STRING,
ZMENG TYPE STRING,
ZIEME TYPE STRING,
ARKTX TYPE STRING,
SRC_POSNR TYPE STRING,
DETAIL_INDEX TYPE STRING,END OF T_EKKO_STR.
DATA: WA_EWASWA_WEIGHDMRPOS_DET_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_EWASWA_WEIGHDMRPOS_DET_STR-MANDT sy-vline 
WA_EWASWA_WEIGHDMRPOS_DET_STR-WEIGHINGNR sy-vline 
WA_EWASWA_WEIGHDMRPOS_DET_STR-LAUFNR sy-vline 
WA_EWASWA_WEIGHDMRPOS_DET_STR-VBELN sy-vline 
WA_EWASWA_WEIGHDMRPOS_DET_STR-POSNR sy-vline 
WA_EWASWA_WEIGHDMRPOS_DET_STR-MATNR sy-vline 
WA_EWASWA_WEIGHDMRPOS_DET_STR-PSTYV sy-vline 
WA_EWASWA_WEIGHDMRPOS_DET_STR-ZMENG sy-vline 
WA_EWASWA_WEIGHDMRPOS_DET_STR-ZIEME sy-vline 
WA_EWASWA_WEIGHDMRPOS_DET_STR-ARKTX sy-vline 
WA_EWASWA_WEIGHDMRPOS_DET_STR-SRC_POSNR sy-vline 
WA_EWASWA_WEIGHDMRPOS_DET_STR-DETAIL_INDEX sy-vline      INTO ld_text SEPARATED BY SPACE.

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