ABAP Select data from SAP table IACMAPPLDOCDATA into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM IACMAPPLDOCDATA
*  INTO TABLE @DATA(IT_IACMAPPLDOCDATA2).
*--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_IACMAPPLDOCDATA INDEX 1 INTO DATA(WA_IACMAPPLDOCDATA2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<IACMAPPLDOCDATA>-MANDT = 1.
<IACMAPPLDOCDATA>-APPLUNIVERSALLYUNIIDENTIFIER = 1.
<IACMAPPLDOCDATA>-APPLICATIONVERSION = 1.
<IACMAPPLDOCDATA>-REFERENCEDOCUMENTTYPE = 1.
<IACMAPPLDOCDATA>-REFERENCEDOCUMENTNUMBER = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_IACMAPPLDOCDATA-REFERENCEDOCUMENTITEM, sy-vline,
  WA_IACMAPPLDOCDATA-SOURCEREFERENCEDOCSUBITEM, sy-vline,
  WA_IACMAPPLDOCDATA-REFERENCEDOCUMENTSIDE, sy-vline,
  WA_IACMAPPLDOCDATA-CONTRACTNUM, sy-vline,
  WA_IACMAPPLDOCDATA-TRADINGCONTRACTITEM, sy-vline,
  WA_IACMAPPLDOCDATA-APPLITEMCREATEDONDATETIME, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_IACMAPPLDOCDATA 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_IACMAPPLDOCDATA 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_IACMAPPLDOCDATA INTO WA_IACMAPPLDOCDATA.


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

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

*Conversion exit CUNIT, internal->external for field BASEUNITOFMEASURE
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_IACMAPPLDOCDATA-BASEUNITOFMEASURE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IACMAPPLDOCDATA-BASEUNITOFMEASURE.
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_IACMAPPLDOCDATA_STR, 
MANDT TYPE STRING,
APPLUNIVERSALLYUNIIDENTIFIER TYPE STRING,
APPLICATIONVERSION TYPE STRING,
REFERENCEDOCUMENTTYPE TYPE STRING,
REFERENCEDOCUMENTNUMBER TYPE STRING,
REFERENCEDOCUMENTITEM TYPE STRING,
SOURCEREFERENCEDOCSUBITEM TYPE STRING,
REFERENCEDOCUMENTSIDE TYPE STRING,
CONTRACTNUM TYPE STRING,
TRADINGCONTRACTITEM TYPE STRING,
APPLITEMCREATEDONDATETIME TYPE STRING,
APPLITEMCHANGEDONDATETIME TYPE STRING,
APPLICATIONSTATUS TYPE STRING,
APPLICATIONITEMCREATEDONDATE TYPE STRING,
APPLICATIONITEMCHANGEDONDATE TYPE STRING,
PRECEDINGDOCUMENT TYPE STRING,
PRECEDINGDOCUMENTITEM TYPE STRING,
PRECEDINGDOCUMENTVERSION TYPE STRING,
COMMODITYQUANTITYINBASEUNIT TYPE STRING,
BASEUNITOFMEASURE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_IACMAPPLDOCDATA_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_IACMAPPLDOCDATA_STR-MANDT sy-vline 
WA_IACMAPPLDOCDATA_STR-APPLUNIVERSALLYUNIIDENTIFIER sy-vline 
WA_IACMAPPLDOCDATA_STR-APPLICATIONVERSION sy-vline 
WA_IACMAPPLDOCDATA_STR-REFERENCEDOCUMENTTYPE sy-vline 
WA_IACMAPPLDOCDATA_STR-REFERENCEDOCUMENTNUMBER sy-vline 
WA_IACMAPPLDOCDATA_STR-REFERENCEDOCUMENTITEM sy-vline 
WA_IACMAPPLDOCDATA_STR-SOURCEREFERENCEDOCSUBITEM sy-vline 
WA_IACMAPPLDOCDATA_STR-REFERENCEDOCUMENTSIDE sy-vline 
WA_IACMAPPLDOCDATA_STR-CONTRACTNUM sy-vline 
WA_IACMAPPLDOCDATA_STR-TRADINGCONTRACTITEM sy-vline 
WA_IACMAPPLDOCDATA_STR-APPLITEMCREATEDONDATETIME sy-vline 
WA_IACMAPPLDOCDATA_STR-APPLITEMCHANGEDONDATETIME sy-vline 
WA_IACMAPPLDOCDATA_STR-APPLICATIONSTATUS sy-vline 
WA_IACMAPPLDOCDATA_STR-APPLICATIONITEMCREATEDONDATE sy-vline 
WA_IACMAPPLDOCDATA_STR-APPLICATIONITEMCHANGEDONDATE sy-vline 
WA_IACMAPPLDOCDATA_STR-PRECEDINGDOCUMENT sy-vline 
WA_IACMAPPLDOCDATA_STR-PRECEDINGDOCUMENTITEM sy-vline 
WA_IACMAPPLDOCDATA_STR-PRECEDINGDOCUMENTVERSION sy-vline 
WA_IACMAPPLDOCDATA_STR-COMMODITYQUANTITYINBASEUNIT sy-vline 
WA_IACMAPPLDOCDATA_STR-BASEUNITOFMEASURE sy-vline      INTO ld_text SEPARATED BY SPACE.

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