ABAP Select data from SAP table APS_CCVEIT_ELEM into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM APS_CCVEIT_ELEM
*  INTO TABLE @DATA(IT_APS_CCVEIT_ELEM2).
*--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_APS_CCVEIT_ELEM INDEX 1 INTO DATA(WA_APS_CCVEIT_ELEM2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<APS_CCVEIT_ELEM>-ENTITYNAME = 1.
<APS_CCVEIT_ELEM>-DATASOURCEALIAS = 1.
<APS_CCVEIT_ELEM>-ELEMENTALIAS = 1.
<APS_CCVEIT_ELEM>-COUNTER = 1.
<APS_CCVEIT_ELEM>-ELEMENTLABEL = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_APS_CCVEIT_ELEM-SOURCEENTITYNAME, sy-vline,
  WA_APS_CCVEIT_ELEM-DATASOURCEELEMENT, sy-vline,
  WA_APS_CCVEIT_ELEM-ORIGINCODE, sy-vline,
  WA_APS_CCVEIT_ELEM-EXPRESSIONINDICATOR, sy-vline,
  WA_APS_CCVEIT_ELEM-EXPRESSION, sy-vline,
  WA_APS_CCVEIT_ELEM-ASSOCIATIONINDICATOR, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_APS_CCVEIT_ELEM 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_APS_CCVEIT_ELEM 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_APS_CCVEIT_ELEM INTO WA_APS_CCVEIT_ELEM.


*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.
ENDFORM. 

*&---------------------------------------------------------------------*
*& Form process_as_string_field_values
*&---------------------------------------------------------------------*
FORM process_as_string_field_values CHANGING p_EKKO LIKE wa_EKKO.

TYPES: BEGIN OF T_APS_CCVEIT_ELEM_STR, 
ENTITYNAME TYPE STRING,
DATASOURCEALIAS TYPE STRING,
ELEMENTALIAS TYPE STRING,
COUNTER TYPE STRING,
ELEMENTLABEL TYPE STRING,
SOURCEENTITYNAME TYPE STRING,
DATASOURCEELEMENT TYPE STRING,
ORIGINCODE TYPE STRING,
EXPRESSIONINDICATOR TYPE STRING,
EXPRESSION TYPE STRING,
ASSOCIATIONINDICATOR TYPE STRING,
PRIVILEGEDASSOCIATIONINDICATOR TYPE STRING,
KEYINDICATOR TYPE STRING,
PATHEDIT TYPE STRING,
DATA_SOURCE_UUID TYPE STRING,
ELEM_UUID TYPE STRING,END OF T_EKKO_STR.
DATA: WA_APS_CCVEIT_ELEM_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_APS_CCVEIT_ELEM_STR-ENTITYNAME sy-vline 
WA_APS_CCVEIT_ELEM_STR-DATASOURCEALIAS sy-vline 
WA_APS_CCVEIT_ELEM_STR-ELEMENTALIAS sy-vline 
WA_APS_CCVEIT_ELEM_STR-COUNTER sy-vline 
WA_APS_CCVEIT_ELEM_STR-ELEMENTLABEL sy-vline 
WA_APS_CCVEIT_ELEM_STR-SOURCEENTITYNAME sy-vline 
WA_APS_CCVEIT_ELEM_STR-DATASOURCEELEMENT sy-vline 
WA_APS_CCVEIT_ELEM_STR-ORIGINCODE sy-vline 
WA_APS_CCVEIT_ELEM_STR-EXPRESSIONINDICATOR sy-vline 
WA_APS_CCVEIT_ELEM_STR-EXPRESSION sy-vline 
WA_APS_CCVEIT_ELEM_STR-ASSOCIATIONINDICATOR sy-vline 
WA_APS_CCVEIT_ELEM_STR-PRIVILEGEDASSOCIATIONINDICATOR sy-vline 
WA_APS_CCVEIT_ELEM_STR-KEYINDICATOR sy-vline 
WA_APS_CCVEIT_ELEM_STR-PATHEDIT sy-vline 
WA_APS_CCVEIT_ELEM_STR-DATA_SOURCE_UUID sy-vline 
WA_APS_CCVEIT_ELEM_STR-ELEM_UUID sy-vline      INTO ld_text SEPARATED BY SPACE.

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