ABAP Select data from SAP table IAOACCTASSI into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM IAOACCTASSI
*  INTO TABLE @DATA(IT_IAOACCTASSI2).
*--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_IAOACCTASSI INDEX 1 INTO DATA(WA_IAOACCTASSI2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<IAOACCTASSI>-MANDT = 1.
<IAOACCTASSI>-ACCRUALENGINEAPPLICATION = 1.
<IAOACCTASSI>-ACCRUALOBJECTLOGICALSYSTEM = 1.
<IAOACCTASSI>-COMPANYCODE = 1.
<IAOACCTASSI>-ACCRUALOBJECT = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_IAOACCTASSI-ACCRUALSUBOBJECT, sy-vline,
  WA_IAOACCTASSI-ACCRACCTASSGMTVALDTYENDDTE, sy-vline,
  WA_IAOACCTASSI-ACCRACCTASSGMTVALDTYSTRTDTE, sy-vline,
  WA_IAOACCTASSI-BUSINESSAREA, sy-vline,
  WA_IAOACCTASSI-PROFITCENTER, sy-vline,
  WA_IAOACCTASSI-SEGMENT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_IAOACCTASSI 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_IAOACCTASSI 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_IAOACCTASSI INTO WA_IAOACCTASSI.


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

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

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

*Conversion exit FMCIS, internal->external for field COMMITMENTITEMINTERNALID
CALL FUNCTION 'CONVERSION_EXIT_FMCIS_OUTPUT'
  EXPORTING
    input =                      WA_IAOACCTASSI-COMMITMENTITEMINTERNALID
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IAOACCTASSI-COMMITMENTITEMINTERNALID.
WRITE:/ 'New Value:', ld_input.

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

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

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

*Conversion exit ABPSP, internal->external for field WBSELEMENT
CALL FUNCTION 'CONVERSION_EXIT_ABPSP_OUTPUT'
  EXPORTING
    input =                      WA_IAOACCTASSI-WBSELEMENT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IAOACCTASSI-WBSELEMENT.
WRITE:/ 'New Value:', ld_input.

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

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

*Conversion exit ALPHA, internal->external for field SALESORDER
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_IAOACCTASSI-SALESORDER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IAOACCTASSI-SALESORDER.
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_IAOACCTASSI_STR, 
MANDT TYPE STRING,
ACCRUALENGINEAPPLICATION TYPE STRING,
ACCRUALOBJECTLOGICALSYSTEM TYPE STRING,
COMPANYCODE TYPE STRING,
ACCRUALOBJECT TYPE STRING,
ACCRUALSUBOBJECT TYPE STRING,
ACCRACCTASSGMTVALDTYENDDTE TYPE STRING,
ACCRACCTASSGMTVALDTYSTRTDTE TYPE STRING,
BUSINESSAREA TYPE STRING,
PROFITCENTER TYPE STRING,
SEGMENT TYPE STRING,
FUND TYPE STRING,
FUNDSCENTER TYPE STRING,
COMMITMENTITEMINTERNALID TYPE STRING,
FUNCTIONALAREA TYPE STRING,
GRANTID TYPE STRING,
FUNDEDPROGRAM TYPE STRING,
BUDGETPERIOD TYPE STRING,
CONTROLLINGAREA TYPE STRING,
FINANCIALMANAGEMENTAREA TYPE STRING,
COSTCENTER TYPE STRING,
ORDERID TYPE STRING,
WBSELEMENT TYPE STRING,
COSTOBJECT TYPE STRING,
COSTCTRACTIVITYTYPE TYPE STRING,
PROJECTNETWORKOBJECT TYPE STRING,
PROJECTNETWORKINTERNALID TYPE STRING,
BUSINESSPROCESS TYPE STRING,
SALESORDER TYPE STRING,
SALESORDERITEM TYPE STRING,
PROFITABILITYSEGMENT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_IAOACCTASSI_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_IAOACCTASSI_STR-MANDT sy-vline 
WA_IAOACCTASSI_STR-ACCRUALENGINEAPPLICATION sy-vline 
WA_IAOACCTASSI_STR-ACCRUALOBJECTLOGICALSYSTEM sy-vline 
WA_IAOACCTASSI_STR-COMPANYCODE sy-vline 
WA_IAOACCTASSI_STR-ACCRUALOBJECT sy-vline 
WA_IAOACCTASSI_STR-ACCRUALSUBOBJECT sy-vline 
WA_IAOACCTASSI_STR-ACCRACCTASSGMTVALDTYENDDTE sy-vline 
WA_IAOACCTASSI_STR-ACCRACCTASSGMTVALDTYSTRTDTE sy-vline 
WA_IAOACCTASSI_STR-BUSINESSAREA sy-vline 
WA_IAOACCTASSI_STR-PROFITCENTER sy-vline 
WA_IAOACCTASSI_STR-SEGMENT sy-vline 
WA_IAOACCTASSI_STR-FUND sy-vline 
WA_IAOACCTASSI_STR-FUNDSCENTER sy-vline 
WA_IAOACCTASSI_STR-COMMITMENTITEMINTERNALID sy-vline 
WA_IAOACCTASSI_STR-FUNCTIONALAREA sy-vline 
WA_IAOACCTASSI_STR-GRANTID sy-vline 
WA_IAOACCTASSI_STR-FUNDEDPROGRAM sy-vline 
WA_IAOACCTASSI_STR-BUDGETPERIOD sy-vline 
WA_IAOACCTASSI_STR-CONTROLLINGAREA sy-vline 
WA_IAOACCTASSI_STR-FINANCIALMANAGEMENTAREA sy-vline 
WA_IAOACCTASSI_STR-COSTCENTER sy-vline 
WA_IAOACCTASSI_STR-ORDERID sy-vline 
WA_IAOACCTASSI_STR-WBSELEMENT sy-vline 
WA_IAOACCTASSI_STR-COSTOBJECT sy-vline 
WA_IAOACCTASSI_STR-COSTCTRACTIVITYTYPE sy-vline 
WA_IAOACCTASSI_STR-PROJECTNETWORKOBJECT sy-vline 
WA_IAOACCTASSI_STR-PROJECTNETWORKINTERNALID sy-vline 
WA_IAOACCTASSI_STR-BUSINESSPROCESS sy-vline 
WA_IAOACCTASSI_STR-SALESORDER sy-vline 
WA_IAOACCTASSI_STR-SALESORDERITEM sy-vline 
WA_IAOACCTASSI_STR-PROFITABILITYSEGMENT sy-vline      INTO ld_text SEPARATED BY SPACE.

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