ABAP Select data from SAP table RCOCOSDOCSNO 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 RCOCOSDOCSNO 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 RCOCOSDOCSNO. 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 RCOCOSDOCSNO 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_RCOCOSDOCSNO TYPE STANDARD TABLE OF RCOCOSDOCSNO,
      WA_RCOCOSDOCSNO TYPE RCOCOSDOCSNO,
      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: <RCOCOSDOCSNO> TYPE RCOCOSDOCSNO.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM RCOCOSDOCSNO
*  INTO TABLE @DATA(IT_RCOCOSDOCSNO2).
*--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_RCOCOSDOCSNO INDEX 1 INTO DATA(WA_RCOCOSDOCSNO2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<RCOCOSDOCSNO>-MANDT = 1.
<RCOCOSDOCSNO>-CONDITIONCONTRACT = 1.
<RCOCOSDOCSNO>-SETTLMTDOC = 1.
<RCOCOSDOCSNO>-SETTLMTDOCITEM = 1.
<RCOCOSDOCSNO>-SETTLMTMGMTACCTGTRANSFSTS = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_RCOCOSDOCSNO-SETTLMTDOCISCANCELED, sy-vline,
  WA_RCOCOSDOCSNO-SETTLMTDATE, sy-vline,
  WA_RCOCOSDOCSNO-SETTLMTDATECAT, sy-vline,
  WA_RCOCOSDOCSNO-SETTLMTDATESEQUENTIALID, sy-vline,
  WA_RCOCOSDOCSNO-POSTINGPARTNERCAT, sy-vline,
  WA_RCOCOSDOCSNO-SETTLMTDOCTYPE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_RCOCOSDOCSNO 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_RCOCOSDOCSNO 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_RCOCOSDOCSNO INTO WA_RCOCOSDOCSNO.


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

*Conversion exit ALPHA, internal->external for field SETTLMTDOC
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RCOCOSDOCSNO-SETTLMTDOC
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RCOCOSDOCSNO-SETTLMTDOC.
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_RCOCOSDOCSNO_STR, 
MANDT TYPE STRING,
CONDITIONCONTRACT TYPE STRING,
SETTLMTDOC TYPE STRING,
SETTLMTDOCITEM TYPE STRING,
SETTLMTMGMTACCTGTRANSFSTS TYPE STRING,
SETTLMTDOCISCANCELED TYPE STRING,
SETTLMTDATE TYPE STRING,
SETTLMTDATECAT TYPE STRING,
SETTLMTDATESEQUENTIALID TYPE STRING,
POSTINGPARTNERCAT TYPE STRING,
SETTLMTDOCTYPE TYPE STRING,
SUPLRSETTLMTCOMPANYCODE TYPE STRING,
CUSTSETTLMTCOMPANYCODE TYPE STRING,
PURCHASINGORGANIZATION TYPE STRING,
PURCHASINGGROUP TYPE STRING,
SALESORGANIZATION TYPE STRING,
DISTRIBUTIONCHANNEL TYPE STRING,
DIVISION TYPE STRING,
SETTLMTITMSTATISTICALPRPTY TYPE STRING,
SETTLMTDOCCURRENCY TYPE STRING,
EXCHANGERATEDATE TYPE STRING,
SUPPLIERITEMNETAMOUNT TYPE STRING,
CUSTOMERITEMNETAMOUNT TYPE STRING,
SUPPLIERITEMGROSSAMOUNT TYPE STRING,
CUSTOMERITEMGROSSAMOUNT TYPE STRING,
SUPPLIERSUBTOTAL1AMOUNT TYPE STRING,
CUSTOMERSUBTOTAL1AMOUNT TYPE STRING,
SUPPLIERSUBTOTAL2AMOUNT TYPE STRING,
CUSTOMERSUBTOTAL2AMOUNT TYPE STRING,
SUPPLIERSUBTOTAL3AMOUNT TYPE STRING,
CUSTOMERSUBTOTAL3AMOUNT TYPE STRING,
SUPPLIERSUBTOTAL4AMOUNT TYPE STRING,
CUSTOMERSUBTOTAL4AMOUNT TYPE STRING,
SUPPLIERSUBTOTAL5AMOUNT TYPE STRING,
CUSTOMERSUBTOTAL5AMOUNT TYPE STRING,
SUPPLIERSUBTOTAL6AMOUNT TYPE STRING,
CUSTOMERSUBTOTAL6AMOUNT TYPE STRING,
SUPPLIERREBATEBASISAMOUNT TYPE STRING,
CUSTOMERREBATEBASISAMOUNT TYPE STRING,
SUPLRITMELIGIBLEAMTFORCSHDISC TYPE STRING,
CUSTITMELIGIBLEAMTFORCSHDISC TYPE STRING,
SUPPLIEREFFECTIVEITEMAMOUNT TYPE STRING,
CUSTOMEREFFECTIVEITEMAMOUNT TYPE STRING,
SUPPLIERITEMTAXAMOUNT TYPE STRING,
CUSTOMERITEMTAXAMOUNT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_RCOCOSDOCSNO_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_RCOCOSDOCSNO_STR-MANDT sy-vline 
WA_RCOCOSDOCSNO_STR-CONDITIONCONTRACT sy-vline 
WA_RCOCOSDOCSNO_STR-SETTLMTDOC sy-vline 
WA_RCOCOSDOCSNO_STR-SETTLMTDOCITEM sy-vline 
WA_RCOCOSDOCSNO_STR-SETTLMTMGMTACCTGTRANSFSTS sy-vline 
WA_RCOCOSDOCSNO_STR-SETTLMTDOCISCANCELED sy-vline 
WA_RCOCOSDOCSNO_STR-SETTLMTDATE sy-vline 
WA_RCOCOSDOCSNO_STR-SETTLMTDATECAT sy-vline 
WA_RCOCOSDOCSNO_STR-SETTLMTDATESEQUENTIALID sy-vline 
WA_RCOCOSDOCSNO_STR-POSTINGPARTNERCAT sy-vline 
WA_RCOCOSDOCSNO_STR-SETTLMTDOCTYPE sy-vline 
WA_RCOCOSDOCSNO_STR-SUPLRSETTLMTCOMPANYCODE sy-vline 
WA_RCOCOSDOCSNO_STR-CUSTSETTLMTCOMPANYCODE sy-vline 
WA_RCOCOSDOCSNO_STR-PURCHASINGORGANIZATION sy-vline 
WA_RCOCOSDOCSNO_STR-PURCHASINGGROUP sy-vline 
WA_RCOCOSDOCSNO_STR-SALESORGANIZATION sy-vline 
WA_RCOCOSDOCSNO_STR-DISTRIBUTIONCHANNEL sy-vline 
WA_RCOCOSDOCSNO_STR-DIVISION sy-vline 
WA_RCOCOSDOCSNO_STR-SETTLMTITMSTATISTICALPRPTY sy-vline 
WA_RCOCOSDOCSNO_STR-SETTLMTDOCCURRENCY sy-vline 
WA_RCOCOSDOCSNO_STR-EXCHANGERATEDATE sy-vline 
WA_RCOCOSDOCSNO_STR-SUPPLIERITEMNETAMOUNT sy-vline 
WA_RCOCOSDOCSNO_STR-CUSTOMERITEMNETAMOUNT sy-vline 
WA_RCOCOSDOCSNO_STR-SUPPLIERITEMGROSSAMOUNT sy-vline 
WA_RCOCOSDOCSNO_STR-CUSTOMERITEMGROSSAMOUNT sy-vline 
WA_RCOCOSDOCSNO_STR-SUPPLIERSUBTOTAL1AMOUNT sy-vline 
WA_RCOCOSDOCSNO_STR-CUSTOMERSUBTOTAL1AMOUNT sy-vline 
WA_RCOCOSDOCSNO_STR-SUPPLIERSUBTOTAL2AMOUNT sy-vline 
WA_RCOCOSDOCSNO_STR-CUSTOMERSUBTOTAL2AMOUNT sy-vline 
WA_RCOCOSDOCSNO_STR-SUPPLIERSUBTOTAL3AMOUNT sy-vline 
WA_RCOCOSDOCSNO_STR-CUSTOMERSUBTOTAL3AMOUNT sy-vline 
WA_RCOCOSDOCSNO_STR-SUPPLIERSUBTOTAL4AMOUNT sy-vline 
WA_RCOCOSDOCSNO_STR-CUSTOMERSUBTOTAL4AMOUNT sy-vline 
WA_RCOCOSDOCSNO_STR-SUPPLIERSUBTOTAL5AMOUNT sy-vline 
WA_RCOCOSDOCSNO_STR-CUSTOMERSUBTOTAL5AMOUNT sy-vline 
WA_RCOCOSDOCSNO_STR-SUPPLIERSUBTOTAL6AMOUNT sy-vline 
WA_RCOCOSDOCSNO_STR-CUSTOMERSUBTOTAL6AMOUNT sy-vline 
WA_RCOCOSDOCSNO_STR-SUPPLIERREBATEBASISAMOUNT sy-vline 
WA_RCOCOSDOCSNO_STR-CUSTOMERREBATEBASISAMOUNT sy-vline 
WA_RCOCOSDOCSNO_STR-SUPLRITMELIGIBLEAMTFORCSHDISC sy-vline 
WA_RCOCOSDOCSNO_STR-CUSTITMELIGIBLEAMTFORCSHDISC sy-vline 
WA_RCOCOSDOCSNO_STR-SUPPLIEREFFECTIVEITEMAMOUNT sy-vline 
WA_RCOCOSDOCSNO_STR-CUSTOMEREFFECTIVEITEMAMOUNT sy-vline 
WA_RCOCOSDOCSNO_STR-SUPPLIERITEMTAXAMOUNT sy-vline 
WA_RCOCOSDOCSNO_STR-CUSTOMERITEMTAXAMOUNT sy-vline      INTO ld_text SEPARATED BY SPACE.

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