ABAP Select data from SAP table VEWAELOCSD into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM VEWAELOCSD
*  INTO TABLE @DATA(IT_VEWAELOCSD2).
*--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_VEWAELOCSD INDEX 1 INTO DATA(WA_VEWAELOCSD2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<VEWAELOCSD>-MANDT = 1.
<VEWAELOCSD>-OBKNR = 1.
<VEWAELOCSD>-OBZAE = 1.
<VEWAELOCSD>-BIS = 1.
<VEWAELOCSD>-AB = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_VEWAELOCSD-VBELN, sy-vline,
  WA_VEWAELOCSD-POSNR, sy-vline,
  WA_VEWAELOCSD-EQUNR, sy-vline,
  WA_VEWAELOCSD-MATNR, sy-vline,
  WA_VEWAELOCSD-ILOAN, sy-vline,
  WA_VEWAELOCSD-SERVLOC, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_VEWAELOCSD 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_VEWAELOCSD 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_VEWAELOCSD INTO WA_VEWAELOCSD.


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

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

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

*Conversion exit TPLNR, internal->external for field SERVLOC
CALL FUNCTION 'CONVERSION_EXIT_TPLNR_OUTPUT'
  EXPORTING
    input =                      WA_VEWAELOCSD-SERVLOC
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_VEWAELOCSD-SERVLOC.
WRITE:/ 'New Value:', ld_input.

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

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

*Conversion exit ALPHA, internal->external for field SERVFREQNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_VEWAELOCSD-SERVFREQNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_VEWAELOCSD-SERVFREQNR.
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_VEWAELOCSD_STR, 
MANDT TYPE STRING,
OBKNR TYPE STRING,
OBZAE TYPE STRING,
BIS TYPE STRING,
AB TYPE STRING,
VBELN TYPE STRING,
POSNR TYPE STRING,
EQUNR TYPE STRING,
MATNR TYPE STRING,
ILOAN TYPE STRING,
SERVLOC TYPE STRING,
LOGIKNR TYPE STRING,
DEVGRP TYPE STRING,
KUNNR TYPE STRING,
CONT_COUNT TYPE STRING,
SERVFREQNR TYPE STRING,
CONTSHARE TYPE STRING,
KZ TYPE STRING,END OF T_EKKO_STR.
DATA: WA_VEWAELOCSD_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_VEWAELOCSD_STR-MANDT sy-vline 
WA_VEWAELOCSD_STR-OBKNR sy-vline 
WA_VEWAELOCSD_STR-OBZAE sy-vline 
WA_VEWAELOCSD_STR-BIS sy-vline 
WA_VEWAELOCSD_STR-AB sy-vline 
WA_VEWAELOCSD_STR-VBELN sy-vline 
WA_VEWAELOCSD_STR-POSNR sy-vline 
WA_VEWAELOCSD_STR-EQUNR sy-vline 
WA_VEWAELOCSD_STR-MATNR sy-vline 
WA_VEWAELOCSD_STR-ILOAN sy-vline 
WA_VEWAELOCSD_STR-SERVLOC sy-vline 
WA_VEWAELOCSD_STR-LOGIKNR sy-vline 
WA_VEWAELOCSD_STR-DEVGRP sy-vline 
WA_VEWAELOCSD_STR-KUNNR sy-vline 
WA_VEWAELOCSD_STR-CONT_COUNT sy-vline 
WA_VEWAELOCSD_STR-SERVFREQNR sy-vline 
WA_VEWAELOCSD_STR-CONTSHARE sy-vline 
WA_VEWAELOCSD_STR-KZ sy-vline      INTO ld_text SEPARATED BY SPACE.

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