ABAP Select data from SAP table POACCDOCCD into internal table

Get Example source ABAP code based on a different SAP table
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Below is a number of ABAP code snippets to demonstrate how to select data from SAP POACCDOCCD 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 POACCDOCCD. 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 POACCDOCCD 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_POACCDOCCD TYPE STANDARD TABLE OF POACCDOCCD,
      WA_POACCDOCCD TYPE POACCDOCCD,
      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: <POACCDOCCD> TYPE POACCDOCCD.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM POACCDOCCD
*  INTO TABLE @DATA(IT_POACCDOCCD2).
*--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_POACCDOCCD INDEX 1 INTO DATA(WA_POACCDOCCD2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<POACCDOCCD>-MANDT = 1.
<POACCDOCCD>-INSPECTITEMDOCUMENTTYPE = 1.
<POACCDOCCD>-CHANGEDOCOBJECTCLASS = 1.
<POACCDOCCD>-CHANGEDOCOBJECT = 1.
<POACCDOCCD>-CHANGEDOCUMENT = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_POACCDOCCD-DATABASETABLE, sy-vline,
  WA_POACCDOCCD-CHANGEDOCTABLEKEY, sy-vline,
  WA_POACCDOCCD-CHANGEDOCDATABASETABLEFIELD, sy-vline,
  WA_POACCDOCCD-CHANGEDOCITEMCHANGETYPE, sy-vline,
  WA_POACCDOCCD-ACCOUNTINGDOCUMENTITEM, sy-vline,
  WA_POACCDOCCD-CHANGEDOCNEWCURRENCY, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_POACCDOCCD 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_POACCDOCCD 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_POACCDOCCD INTO WA_POACCDOCCD.


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

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

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

*Conversion exit GJAHR, internal->external for field FISCALYEAR
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_POACCDOCCD-FISCALYEAR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_POACCDOCCD-FISCALYEAR.
WRITE:/ 'New Value:', ld_input.

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

*Conversion exit ISOLA, internal->external for field CHANGEDOCLANGUAGE
CALL FUNCTION 'CONVERSION_EXIT_ISOLA_OUTPUT'
  EXPORTING
    input =                      WA_POACCDOCCD-CHANGEDOCLANGUAGE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_POACCDOCCD-CHANGEDOCLANGUAGE.
WRITE:/ 'New Value:', ld_input.

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

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

*Conversion exit ALPHA, internal->external for field SUPPLIER
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_POACCDOCCD-SUPPLIER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_POACCDOCCD-SUPPLIER.
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_POACCDOCCD_STR, 
MANDT TYPE STRING,
INSPECTITEMDOCUMENTTYPE TYPE STRING,
CHANGEDOCOBJECTCLASS TYPE STRING,
CHANGEDOCOBJECT TYPE STRING,
CHANGEDOCUMENT TYPE STRING,
DATABASETABLE TYPE STRING,
CHANGEDOCTABLEKEY TYPE STRING,
CHANGEDOCDATABASETABLEFIELD TYPE STRING,
CHANGEDOCITEMCHANGETYPE TYPE STRING,
ACCOUNTINGDOCUMENTITEM TYPE STRING,
CHANGEDOCNEWCURRENCY TYPE STRING,
CHANGEDOCNEWFIELDVALUE TYPE STRING,
CHANGEDOCNEWUNIT TYPE STRING,
CHANGEDOCPREVIOUSCURRENCY TYPE STRING,
CHANGEDOCPREVIOUSFIELDVALUE TYPE STRING,
CHANGEDOCPREVIOUSUNIT TYPE STRING,
COMPANYCODE TYPE STRING,
ACCOUNTINGDOCUMENT TYPE STRING,
FISCALYEAR TYPE STRING,
ACCOUNTINGDOCUMENTTYPE TYPE STRING,
LEDGER TYPE STRING,
CHANGEDOCLANGUAGE TYPE STRING,
CREATIONTIME TYPE STRING,
CREATIONDATE TYPE STRING,
CREATEDBYUSER TYPE STRING,
CHANGEDOCCHANGETYPE TYPE STRING,
CHANGETRANSACTIONCODE TYPE STRING,
GLACCOUNT TYPE STRING,
CUSTOMER TYPE STRING,
SUPPLIER TYPE STRING,
ACCOUNTTYPE TYPE STRING,
POSTINGKEY TYPE STRING,
SPECIALGLCODE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_POACCDOCCD_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_POACCDOCCD_STR-MANDT sy-vline 
WA_POACCDOCCD_STR-INSPECTITEMDOCUMENTTYPE sy-vline 
WA_POACCDOCCD_STR-CHANGEDOCOBJECTCLASS sy-vline 
WA_POACCDOCCD_STR-CHANGEDOCOBJECT sy-vline 
WA_POACCDOCCD_STR-CHANGEDOCUMENT sy-vline 
WA_POACCDOCCD_STR-DATABASETABLE sy-vline 
WA_POACCDOCCD_STR-CHANGEDOCTABLEKEY sy-vline 
WA_POACCDOCCD_STR-CHANGEDOCDATABASETABLEFIELD sy-vline 
WA_POACCDOCCD_STR-CHANGEDOCITEMCHANGETYPE sy-vline 
WA_POACCDOCCD_STR-ACCOUNTINGDOCUMENTITEM sy-vline 
WA_POACCDOCCD_STR-CHANGEDOCNEWCURRENCY sy-vline 
WA_POACCDOCCD_STR-CHANGEDOCNEWFIELDVALUE sy-vline 
WA_POACCDOCCD_STR-CHANGEDOCNEWUNIT sy-vline 
WA_POACCDOCCD_STR-CHANGEDOCPREVIOUSCURRENCY sy-vline 
WA_POACCDOCCD_STR-CHANGEDOCPREVIOUSFIELDVALUE sy-vline 
WA_POACCDOCCD_STR-CHANGEDOCPREVIOUSUNIT sy-vline 
WA_POACCDOCCD_STR-COMPANYCODE sy-vline 
WA_POACCDOCCD_STR-ACCOUNTINGDOCUMENT sy-vline 
WA_POACCDOCCD_STR-FISCALYEAR sy-vline 
WA_POACCDOCCD_STR-ACCOUNTINGDOCUMENTTYPE sy-vline 
WA_POACCDOCCD_STR-LEDGER sy-vline 
WA_POACCDOCCD_STR-CHANGEDOCLANGUAGE sy-vline 
WA_POACCDOCCD_STR-CREATIONTIME sy-vline 
WA_POACCDOCCD_STR-CREATIONDATE sy-vline 
WA_POACCDOCCD_STR-CREATEDBYUSER sy-vline 
WA_POACCDOCCD_STR-CHANGEDOCCHANGETYPE sy-vline 
WA_POACCDOCCD_STR-CHANGETRANSACTIONCODE sy-vline 
WA_POACCDOCCD_STR-GLACCOUNT sy-vline 
WA_POACCDOCCD_STR-CUSTOMER sy-vline 
WA_POACCDOCCD_STR-SUPPLIER sy-vline 
WA_POACCDOCCD_STR-ACCOUNTTYPE sy-vline 
WA_POACCDOCCD_STR-POSTINGKEY sy-vline 
WA_POACCDOCCD_STR-SPECIALGLCODE sy-vline      INTO ld_text SEPARATED BY SPACE.

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