ABAP Select data from SAP table ICVDOCATTACHCNTN into internal table

Get Example source ABAP code based on a different SAP table
  Get ABAP code

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM ICVDOCATTACHCNTN
*  INTO TABLE @DATA(IT_ICVDOCATTACHCNTN2).
*--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_ICVDOCATTACHCNTN INDEX 1 INTO DATA(WA_ICVDOCATTACHCNTN2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<ICVDOCATTACHCNTN>-MANDT = 1.
<ICVDOCATTACHCNTN>-DOCUMENTINFORECORDDOCTYPE = 1.
<ICVDOCATTACHCNTN>-DOCUMENTINFORECORDDOCNUMBER = 1.
<ICVDOCATTACHCNTN>-DOCUMENTINFORECORDDOCVERSION = 1.
<ICVDOCATTACHCNTN>-DOCUMENTINFORECORDDOCPART = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_ICVDOCATTACHCNTN-DOCUMENTINDEX, sy-vline,
  WA_ICVDOCATTACHCNTN-FILEUUID, sy-vline,
  WA_ICVDOCATTACHCNTN-PHYSICALDOCUMENT, sy-vline,
  WA_ICVDOCATTACHCNTN-PHYSICALDOCUMENTCLASS, sy-vline,
  WA_ICVDOCATTACHCNTN-FILENAME, sy-vline,
  WA_ICVDOCATTACHCNTN-STORAGECATEGORY, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_ICVDOCATTACHCNTN 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_ICVDOCATTACHCNTN 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_ICVDOCATTACHCNTN INTO WA_ICVDOCATTACHCNTN.


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

*Conversion exit ISOLA, internal->external for field LANGUAGE
CALL FUNCTION 'CONVERSION_EXIT_ISOLA_OUTPUT'
  EXPORTING
    input =                      WA_ICVDOCATTACHCNTN-LANGUAGE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ICVDOCATTACHCNTN-LANGUAGE.
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_ICVDOCATTACHCNTN_STR, 
MANDT TYPE STRING,
DOCUMENTINFORECORDDOCTYPE TYPE STRING,
DOCUMENTINFORECORDDOCNUMBER TYPE STRING,
DOCUMENTINFORECORDDOCVERSION TYPE STRING,
DOCUMENTINFORECORDDOCPART TYPE STRING,
DOCUMENTINDEX TYPE STRING,
FILEUUID TYPE STRING,
PHYSICALDOCUMENT TYPE STRING,
PHYSICALDOCUMENTCLASS TYPE STRING,
FILENAME TYPE STRING,
STORAGECATEGORY TYPE STRING,
WORKSTATIONAPPLICATION TYPE STRING,
FILEDESCRIPTION TYPE STRING,
LANGUAGE TYPE STRING,
PHYSDOCCNTNTTEXT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_ICVDOCATTACHCNTN_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_ICVDOCATTACHCNTN_STR-MANDT sy-vline 
WA_ICVDOCATTACHCNTN_STR-DOCUMENTINFORECORDDOCTYPE sy-vline 
WA_ICVDOCATTACHCNTN_STR-DOCUMENTINFORECORDDOCNUMBER sy-vline 
WA_ICVDOCATTACHCNTN_STR-DOCUMENTINFORECORDDOCVERSION sy-vline 
WA_ICVDOCATTACHCNTN_STR-DOCUMENTINFORECORDDOCPART sy-vline 
WA_ICVDOCATTACHCNTN_STR-DOCUMENTINDEX sy-vline 
WA_ICVDOCATTACHCNTN_STR-FILEUUID sy-vline 
WA_ICVDOCATTACHCNTN_STR-PHYSICALDOCUMENT sy-vline 
WA_ICVDOCATTACHCNTN_STR-PHYSICALDOCUMENTCLASS sy-vline 
WA_ICVDOCATTACHCNTN_STR-FILENAME sy-vline 
WA_ICVDOCATTACHCNTN_STR-STORAGECATEGORY sy-vline 
WA_ICVDOCATTACHCNTN_STR-WORKSTATIONAPPLICATION sy-vline 
WA_ICVDOCATTACHCNTN_STR-FILEDESCRIPTION sy-vline 
WA_ICVDOCATTACHCNTN_STR-LANGUAGE sy-vline 
WA_ICVDOCATTACHCNTN_STR-PHYSDOCCNTNTTEXT sy-vline      INTO ld_text SEPARATED BY SPACE.

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