ABAP Select data from SAP table RECNC_CONTRACT_TYPE into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM RECNC_CONTRACT_TYPE
*  INTO TABLE @DATA(IT_RECNC_CONTRACT_TYPE2).
*--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_RECNC_CONTRACT_TYPE INDEX 1 INTO DATA(WA_RECNC_CONTRACT_TYPE2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<RECNC_CONTRACT_TYPE>-MANDT = 1.
<RECNC_CONTRACT_TYPE>-SMVART = 1.
<RECNC_CONTRACT_TYPE>-NRNR = 1.
<RECNC_CONTRACT_TYPE>-RECNSRELOB = 1.
<RECNC_CONTRACT_TYPE>-NRNRVOR = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_RECNC_CONTRACT_TYPE-GCVARNR, sy-vline,
  WA_RECNC_CONTRACT_TYPE-CONDGROUP, sy-vline,
  WA_RECNC_CONTRACT_TYPE-HOME_URL, sy-vline,
  WA_RECNC_CONTRACT_TYPE-ADJUSTNUMBERBEG, sy-vline,
  WA_RECNC_CONTRACT_TYPE-ADJUSTNUMBERSTEP, sy-vline,
  WA_RECNC_CONTRACT_TYPE-BPROLETYPE1, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_RECNC_CONTRACT_TYPE 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_RECNC_CONTRACT_TYPE 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_RECNC_CONTRACT_TYPE INTO WA_RECNC_CONTRACT_TYPE.


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

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

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

*Conversion exit ALPHA, internal->external for field CONDGROUPSUM
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RECNC_CONTRACT_TYPE-CONDGROUPSUM
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RECNC_CONTRACT_TYPE-CONDGROUPSUM.
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_RECNC_CONTRACT_TYPE_STR, 
MANDT TYPE STRING,
SMVART TYPE STRING,
NRNR TYPE STRING,
RECNSRELOB TYPE STRING,
NRNRVOR TYPE STRING,
GCVARNR TYPE STRING,
CONDGROUP TYPE STRING,
HOME_URL TYPE STRING,
ADJUSTNUMBERBEG TYPE STRING,
ADJUSTNUMBERSTEP TYPE STRING,
BPROLETYPE1 TYPE STRING,
BPROLETYPE2 TYPE STRING,
BPAPPL TYPE STRING,
NRNROFF TYPE STRING,
USERSUPPLIER TYPE STRING,
CATEGORY TYPE STRING,
CFPERIOD TYPE STRING,
OPTMETH TYPE STRING,
TAXTYPE TYPE STRING,
TAXGROUP TYPE STRING,
NEWCNTYPE TYPE STRING,
CNTYPEDEPOSIT TYPE STRING,
ISTAXFREE TYPE STRING,
NOOPTMETH TYPE STRING,
COSEPROF TYPE STRING,
NTPROCDEFAULT TYPE STRING,
CNTYPEUSAGEIND TYPE STRING,
CMCFLEVEL TYPE STRING,
CURRENCYASSIGN TYPE STRING,
ISPOSSDENABLED TYPE STRING,
CONDGROUPSUM TYPE STRING,
CUEXCLUDEASSIGN TYPE STRING,END OF T_EKKO_STR.
DATA: WA_RECNC_CONTRACT_TYPE_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_RECNC_CONTRACT_TYPE_STR-MANDT sy-vline 
WA_RECNC_CONTRACT_TYPE_STR-SMVART sy-vline 
WA_RECNC_CONTRACT_TYPE_STR-NRNR sy-vline 
WA_RECNC_CONTRACT_TYPE_STR-RECNSRELOB sy-vline 
WA_RECNC_CONTRACT_TYPE_STR-NRNRVOR sy-vline 
WA_RECNC_CONTRACT_TYPE_STR-GCVARNR sy-vline 
WA_RECNC_CONTRACT_TYPE_STR-CONDGROUP sy-vline 
WA_RECNC_CONTRACT_TYPE_STR-HOME_URL sy-vline 
WA_RECNC_CONTRACT_TYPE_STR-ADJUSTNUMBERBEG sy-vline 
WA_RECNC_CONTRACT_TYPE_STR-ADJUSTNUMBERSTEP sy-vline 
WA_RECNC_CONTRACT_TYPE_STR-BPROLETYPE1 sy-vline 
WA_RECNC_CONTRACT_TYPE_STR-BPROLETYPE2 sy-vline 
WA_RECNC_CONTRACT_TYPE_STR-BPAPPL sy-vline 
WA_RECNC_CONTRACT_TYPE_STR-NRNROFF sy-vline 
WA_RECNC_CONTRACT_TYPE_STR-USERSUPPLIER sy-vline 
WA_RECNC_CONTRACT_TYPE_STR-CATEGORY sy-vline 
WA_RECNC_CONTRACT_TYPE_STR-CFPERIOD sy-vline 
WA_RECNC_CONTRACT_TYPE_STR-OPTMETH sy-vline 
WA_RECNC_CONTRACT_TYPE_STR-TAXTYPE sy-vline 
WA_RECNC_CONTRACT_TYPE_STR-TAXGROUP sy-vline 
WA_RECNC_CONTRACT_TYPE_STR-NEWCNTYPE sy-vline 
WA_RECNC_CONTRACT_TYPE_STR-CNTYPEDEPOSIT sy-vline 
WA_RECNC_CONTRACT_TYPE_STR-ISTAXFREE sy-vline 
WA_RECNC_CONTRACT_TYPE_STR-NOOPTMETH sy-vline 
WA_RECNC_CONTRACT_TYPE_STR-COSEPROF sy-vline 
WA_RECNC_CONTRACT_TYPE_STR-NTPROCDEFAULT sy-vline 
WA_RECNC_CONTRACT_TYPE_STR-CNTYPEUSAGEIND sy-vline 
WA_RECNC_CONTRACT_TYPE_STR-CMCFLEVEL sy-vline 
WA_RECNC_CONTRACT_TYPE_STR-CURRENCYASSIGN sy-vline 
WA_RECNC_CONTRACT_TYPE_STR-ISPOSSDENABLED sy-vline 
WA_RECNC_CONTRACT_TYPE_STR-CONDGROUPSUM sy-vline 
WA_RECNC_CONTRACT_TYPE_STR-CUEXCLUDEASSIGN sy-vline      INTO ld_text SEPARATED BY SPACE.

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