ABAP Select data from SAP table RECN_EXTERNAL_CONDITION_ODATA into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM RECN_EXTERNAL_CONDITION_ODATA
*  INTO TABLE @DATA(IT_RECN_EXTERNAL_CONDITION_ODATA2).
*--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_RECN_EXTERNAL_CONDITION_ODATA INDEX 1 INTO DATA(WA_RECN_EXTERNAL_CONDITION_ODATA2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<RECN_EXTERNAL_CONDITION_ODATA>-BUKRS = 1.
<RECN_EXTERNAL_CONDITION_ODATA>-RECNNR = 1.
<RECN_EXTERNAL_CONDITION_ODATA>-OBJIDCALC = 1.
<RECN_EXTERNAL_CONDITION_ODATA>-OBJTYPECALC = 1.
<RECN_EXTERNAL_CONDITION_ODATA>-CONDTYPE = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_RECN_EXTERNAL_CONDITION_ODATA-XCONDITION, sy-vline,
  WA_RECN_EXTERNAL_CONDITION_ODATA-CONDVALIDFROM, sy-vline,
  WA_RECN_EXTERNAL_CONDITION_ODATA-CONDPURPOSEEXT, sy-vline,
  WA_RECN_EXTERNAL_CONDITION_ODATA-XMCONDPURPOSEEXT, sy-vline,
  WA_RECN_EXTERNAL_CONDITION_ODATA-CONDCURR, sy-vline,
  WA_RECN_EXTERNAL_CONDITION_ODATA-CONDVALIDTO, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_RECN_EXTERNAL_CONDITION_ODATA 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_RECN_EXTERNAL_CONDITION_ODATA 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_RECN_EXTERNAL_CONDITION_ODATA INTO WA_RECN_EXTERNAL_CONDITION_ODATA.


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

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

*Conversion exit REDAT, internal->external for field CONDVALIDTO
CALL FUNCTION 'CONVERSION_EXIT_REDAT_OUTPUT'
  EXPORTING
    input =                      WA_RECN_EXTERNAL_CONDITION_ODATA-CONDVALIDTO
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RECN_EXTERNAL_CONDITION_ODATA-CONDVALIDTO.
WRITE:/ 'New Value:', ld_input.

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

*Conversion exit REDAT, internal->external for field NEWCONDVALIDTO
CALL FUNCTION 'CONVERSION_EXIT_REDAT_OUTPUT'
  EXPORTING
    input =                      WA_RECN_EXTERNAL_CONDITION_ODATA-NEWCONDVALIDTO
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RECN_EXTERNAL_CONDITION_ODATA-NEWCONDVALIDTO.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ISOLA, internal->external for field SPRAS
CALL FUNCTION 'CONVERSION_EXIT_ISOLA_OUTPUT'
  EXPORTING
    input =                      WA_RECN_EXTERNAL_CONDITION_ODATA-SPRAS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RECN_EXTERNAL_CONDITION_ODATA-SPRAS.
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_RECN_EXTERNAL_CONDITION_ODATA_STR, 
BUKRS TYPE STRING,
RECNNR TYPE STRING,
OBJIDCALC TYPE STRING,
OBJTYPECALC TYPE STRING,
CONDTYPE TYPE STRING,
XCONDITION TYPE STRING,
CONDVALIDFROM TYPE STRING,
CONDPURPOSEEXT TYPE STRING,
XMCONDPURPOSEEXT TYPE STRING,
CONDCURR TYPE STRING,
CONDVALIDTO TYPE STRING,
UNITPRICE TYPE STRING,
CALCRULE TYPE STRING,
XMCALCRULE TYPE STRING,
TAXVALUE TYPE STRING,
ISGROSS TYPE STRING,
TAXTYPE TYPE STRING,
TAXGROUP TYPE STRING,
CONDVALUENET TYPE STRING,
CONDVALUEGROSS TYPE STRING,
PARTNER TYPE STRING,
TAXRATE TYPE STRING,
IBAN TYPE STRING,
FREQUENCY TYPE STRING,
FREQUENCYUNIT TYPE STRING,
CONDVALUEREFER TYPE STRING,
PAYMENTFORM TYPE STRING,
NEWCONDVALIDTO TYPE STRING,
PRORATE TYPE STRING,
CALCMETHPER TYPE STRING,
MONTHFROM TYPE STRING,
RHYTHMBEGIN TYPE STRING,
MEMOTEXT TYPE STRING,
SPRAS TYPE STRING,END OF T_EKKO_STR.
DATA: WA_RECN_EXTERNAL_CONDITION_ODATA_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_RECN_EXTERNAL_CONDITION_ODATA_STR-BUKRS sy-vline 
WA_RECN_EXTERNAL_CONDITION_ODATA_STR-RECNNR sy-vline 
WA_RECN_EXTERNAL_CONDITION_ODATA_STR-OBJIDCALC sy-vline 
WA_RECN_EXTERNAL_CONDITION_ODATA_STR-OBJTYPECALC sy-vline 
WA_RECN_EXTERNAL_CONDITION_ODATA_STR-CONDTYPE sy-vline 
WA_RECN_EXTERNAL_CONDITION_ODATA_STR-XCONDITION sy-vline 
WA_RECN_EXTERNAL_CONDITION_ODATA_STR-CONDVALIDFROM sy-vline 
WA_RECN_EXTERNAL_CONDITION_ODATA_STR-CONDPURPOSEEXT sy-vline 
WA_RECN_EXTERNAL_CONDITION_ODATA_STR-XMCONDPURPOSEEXT sy-vline 
WA_RECN_EXTERNAL_CONDITION_ODATA_STR-CONDCURR sy-vline 
WA_RECN_EXTERNAL_CONDITION_ODATA_STR-CONDVALIDTO sy-vline 
WA_RECN_EXTERNAL_CONDITION_ODATA_STR-UNITPRICE sy-vline 
WA_RECN_EXTERNAL_CONDITION_ODATA_STR-CALCRULE sy-vline 
WA_RECN_EXTERNAL_CONDITION_ODATA_STR-XMCALCRULE sy-vline 
WA_RECN_EXTERNAL_CONDITION_ODATA_STR-TAXVALUE sy-vline 
WA_RECN_EXTERNAL_CONDITION_ODATA_STR-ISGROSS sy-vline 
WA_RECN_EXTERNAL_CONDITION_ODATA_STR-TAXTYPE sy-vline 
WA_RECN_EXTERNAL_CONDITION_ODATA_STR-TAXGROUP sy-vline 
WA_RECN_EXTERNAL_CONDITION_ODATA_STR-CONDVALUENET sy-vline 
WA_RECN_EXTERNAL_CONDITION_ODATA_STR-CONDVALUEGROSS sy-vline 
WA_RECN_EXTERNAL_CONDITION_ODATA_STR-PARTNER sy-vline 
WA_RECN_EXTERNAL_CONDITION_ODATA_STR-TAXRATE sy-vline 
WA_RECN_EXTERNAL_CONDITION_ODATA_STR-IBAN sy-vline 
WA_RECN_EXTERNAL_CONDITION_ODATA_STR-FREQUENCY sy-vline 
WA_RECN_EXTERNAL_CONDITION_ODATA_STR-FREQUENCYUNIT sy-vline 
WA_RECN_EXTERNAL_CONDITION_ODATA_STR-CONDVALUEREFER sy-vline 
WA_RECN_EXTERNAL_CONDITION_ODATA_STR-PAYMENTFORM sy-vline 
WA_RECN_EXTERNAL_CONDITION_ODATA_STR-NEWCONDVALIDTO sy-vline 
WA_RECN_EXTERNAL_CONDITION_ODATA_STR-PRORATE sy-vline 
WA_RECN_EXTERNAL_CONDITION_ODATA_STR-CALCMETHPER sy-vline 
WA_RECN_EXTERNAL_CONDITION_ODATA_STR-MONTHFROM sy-vline 
WA_RECN_EXTERNAL_CONDITION_ODATA_STR-RHYTHMBEGIN sy-vline 
WA_RECN_EXTERNAL_CONDITION_ODATA_STR-MEMOTEXT sy-vline 
WA_RECN_EXTERNAL_CONDITION_ODATA_STR-SPRAS sy-vline      INTO ld_text SEPARATED BY SPACE.

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