ABAP Select data from SAP table EAMVE_S_VI_ALLOC into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM EAMVE_S_VI_ALLOC
*  INTO TABLE @DATA(IT_EAMVE_S_VI_ALLOC2).
*--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_EAMVE_S_VI_ALLOC INDEX 1 INTO DATA(WA_EAMVE_S_VI_ALLOC2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<EAMVE_S_VI_ALLOC>-ROW_KEY = 1.
<EAMVE_S_VI_ALLOC>-OBJECTTYPE = 1.
<EAMVE_S_VI_ALLOC>-OBJECTKEY = 1.
<EAMVE_S_VI_ALLOC>-EAMS_DOCUMENTTYPE = 1.
<EAMVE_S_VI_ALLOC>-EAMS_DOCUMENTNUMBER = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_EAMVE_S_VI_ALLOC-EAMS_DOCUMENTPART, sy-vline,
  WA_EAMVE_S_VI_ALLOC-EAMS_DOCUMENTVERSION, sy-vline,
  WA_EAMVE_S_VI_ALLOC-DOKAR, sy-vline,
  WA_EAMVE_S_VI_ALLOC-DARTXT, sy-vline,
  WA_EAMVE_S_VI_ALLOC-DOKNR, sy-vline,
  WA_EAMVE_S_VI_ALLOC-DOKVR, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_EAMVE_S_VI_ALLOC 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_EAMVE_S_VI_ALLOC 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_EAMVE_S_VI_ALLOC INTO WA_EAMVE_S_VI_ALLOC.


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

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

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

*Conversion exit NUMCV, internal->external for field EAMS_VORNR
CALL FUNCTION 'CONVERSION_EXIT_NUMCV_OUTPUT'
  EXPORTING
    input =                      WA_EAMVE_S_VI_ALLOC-EAMS_VORNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_EAMVE_S_VI_ALLOC-EAMS_VORNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit NUMCV, internal->external for field EAMS_UVORN
CALL FUNCTION 'CONVERSION_EXIT_NUMCV_OUTPUT'
  EXPORTING
    input =                      WA_EAMVE_S_VI_ALLOC-EAMS_UVORN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_EAMVE_S_VI_ALLOC-EAMS_UVORN.
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_EAMVE_S_VI_ALLOC_STR, 
ROW_KEY TYPE STRING,
OBJECTTYPE TYPE STRING,
OBJECTKEY TYPE STRING,
EAMS_DOCUMENTTYPE TYPE STRING,
EAMS_DOCUMENTNUMBER TYPE STRING,
EAMS_DOCUMENTPART TYPE STRING,
EAMS_DOCUMENTVERSION TYPE STRING,
DOKAR TYPE STRING,
DARTXT TYPE STRING,
DOKNR TYPE STRING,
DOKVR TYPE STRING,
DOKTL TYPE STRING,
DKTXT TYPE STRING,
DETAILS TYPE STRING,
DOKNR_LINK TYPE STRING,
SAFETY_CHAR TYPE STRING,
PRT_IND TYPE STRING,
OBJECTDESCRIPTION TYPE STRING,
EAMS_VORNR TYPE STRING,
EAMS_UVORN TYPE STRING,END OF T_EKKO_STR.
DATA: WA_EAMVE_S_VI_ALLOC_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_EAMVE_S_VI_ALLOC_STR-ROW_KEY sy-vline 
WA_EAMVE_S_VI_ALLOC_STR-OBJECTTYPE sy-vline 
WA_EAMVE_S_VI_ALLOC_STR-OBJECTKEY sy-vline 
WA_EAMVE_S_VI_ALLOC_STR-EAMS_DOCUMENTTYPE sy-vline 
WA_EAMVE_S_VI_ALLOC_STR-EAMS_DOCUMENTNUMBER sy-vline 
WA_EAMVE_S_VI_ALLOC_STR-EAMS_DOCUMENTPART sy-vline 
WA_EAMVE_S_VI_ALLOC_STR-EAMS_DOCUMENTVERSION sy-vline 
WA_EAMVE_S_VI_ALLOC_STR-DOKAR sy-vline 
WA_EAMVE_S_VI_ALLOC_STR-DARTXT sy-vline 
WA_EAMVE_S_VI_ALLOC_STR-DOKNR sy-vline 
WA_EAMVE_S_VI_ALLOC_STR-DOKVR sy-vline 
WA_EAMVE_S_VI_ALLOC_STR-DOKTL sy-vline 
WA_EAMVE_S_VI_ALLOC_STR-DKTXT sy-vline 
WA_EAMVE_S_VI_ALLOC_STR-DETAILS sy-vline 
WA_EAMVE_S_VI_ALLOC_STR-DOKNR_LINK sy-vline 
WA_EAMVE_S_VI_ALLOC_STR-SAFETY_CHAR sy-vline 
WA_EAMVE_S_VI_ALLOC_STR-PRT_IND sy-vline 
WA_EAMVE_S_VI_ALLOC_STR-OBJECTDESCRIPTION sy-vline 
WA_EAMVE_S_VI_ALLOC_STR-EAMS_VORNR sy-vline 
WA_EAMVE_S_VI_ALLOC_STR-EAMS_UVORN sy-vline      INTO ld_text SEPARATED BY SPACE.

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