ABAP Select data from SAP table RECN_CONTRACT into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP RECN_CONTRACT 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_CONTRACT. 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_CONTRACT 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_CONTRACT TYPE STANDARD TABLE OF RECN_CONTRACT,
      WA_RECN_CONTRACT TYPE RECN_CONTRACT,
      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_CONTRACT> TYPE RECN_CONTRACT.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM RECN_CONTRACT
*  INTO TABLE @DATA(IT_RECN_CONTRACT2).
*--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_CONTRACT INDEX 1 INTO DATA(WA_RECN_CONTRACT2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<RECN_CONTRACT>-MANDT = 1.
<RECN_CONTRACT>-INTRENO = 1.
<RECN_CONTRACT>-BUKRS = 1.
<RECN_CONTRACT>-RECNNR = 1.
<RECN_CONTRACT>-OBJNR = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_RECN_CONTRACT-IMKEY, sy-vline,
  WA_RECN_CONTRACT-CREATIONTYPE, sy-vline,
  WA_RECN_CONTRACT-RERF, sy-vline,
  WA_RECN_CONTRACT-DERF, sy-vline,
  WA_RECN_CONTRACT-TERF, sy-vline,
  WA_RECN_CONTRACT-REHER, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_RECN_CONTRACT 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_CONTRACT 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_CONTRACT INTO WA_RECN_CONTRACT.


*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_CONTRACT-RECNNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RECN_CONTRACT-RECNNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit IMKEY, internal->external for field IMKEY
CALL FUNCTION 'CONVERSION_EXIT_IMKEY_OUTPUT'
  EXPORTING
    input =                      WA_RECN_CONTRACT-IMKEY
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RECN_CONTRACT-IMKEY.
WRITE:/ 'New Value:', ld_input.

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

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

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

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

*Conversion exit SWENR, internal->external for field BENOCN
CALL FUNCTION 'CONVERSION_EXIT_SWENR_OUTPUT'
  EXPORTING
    input =                      WA_RECN_CONTRACT-BENOCN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RECN_CONTRACT-BENOCN.
WRITE:/ 'New Value:', ld_input.

*Conversion exit REDAT, internal->external for field TRANSPOSSTO
CALL FUNCTION 'CONVERSION_EXIT_REDAT_OUTPUT'
  EXPORTING
    input =                      WA_RECN_CONTRACT-TRANSPOSSTO
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RECN_CONTRACT-TRANSPOSSTO.
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_CONTRACT_STR, 
MANDT TYPE STRING,
INTRENO TYPE STRING,
BUKRS TYPE STRING,
RECNNR TYPE STRING,
OBJNR TYPE STRING,
IMKEY TYPE STRING,
CREATIONTYPE TYPE STRING,
RERF TYPE STRING,
DERF TYPE STRING,
TERF TYPE STRING,
REHER TYPE STRING,
RBEAR TYPE STRING,
DBEAR TYPE STRING,
TBEAR TYPE STRING,
RBHER TYPE STRING,
RESPONSIBLE TYPE STRING,
USEREXCLUSIVE TYPE STRING,
AUTHGRP TYPE STRING,
RECNTYPE TYPE STRING,
RECNBEG TYPE STRING,
RECNENDABS TYPE STRING,
RECNTXT TYPE STRING,
RECNDACTIV TYPE STRING,
RECNTLAW TYPE STRING,
RECNTXTOLD TYPE STRING,
RECNBUKRSCOLLECT TYPE STRING,
RECNNRCOLLECT TYPE STRING,
RECNCNCURR TYPE STRING,
INDUSTRY TYPE STRING,
SRRELEVANT TYPE STRING,
DPTARGETTYPE TYPE STRING,
RECNDAT TYPE STRING,
RECN2DAT TYPE STRING,
RECNDPO TYPE STRING,
RECNEND1ST TYPE STRING,
RECNNOTPER TYPE STRING,
RECNNOTRECEIPT TYPE STRING,
RECNNOTREASON TYPE STRING,
RECNDAKTKU TYPE STRING,
CFARCHIVEDTO TYPE STRING,
CFLOCKEDTO TYPE STRING,
CFPOSTINGFROM TYPE STRING,
BENOCN TYPE STRING,
TRANSPOSSFROM TYPE STRING,
TRANSPOSSTO TYPE STRING,
HASMULTIASSIGN TYPE STRING,
POSSDATEFROM TYPE STRING,
POSSDATETO TYPE STRING,
RELEVANTEVAL TYPE STRING,
DUMMY_REC_PS TYPE STRING,
SECDEPRELEVANT TYPE STRING,
NOTADJSDCN TYPE STRING,END OF T_EKKO_STR.
DATA: WA_RECN_CONTRACT_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_CONTRACT_STR-MANDT sy-vline 
WA_RECN_CONTRACT_STR-INTRENO sy-vline 
WA_RECN_CONTRACT_STR-BUKRS sy-vline 
WA_RECN_CONTRACT_STR-RECNNR sy-vline 
WA_RECN_CONTRACT_STR-OBJNR sy-vline 
WA_RECN_CONTRACT_STR-IMKEY sy-vline 
WA_RECN_CONTRACT_STR-CREATIONTYPE sy-vline 
WA_RECN_CONTRACT_STR-RERF sy-vline 
WA_RECN_CONTRACT_STR-DERF sy-vline 
WA_RECN_CONTRACT_STR-TERF sy-vline 
WA_RECN_CONTRACT_STR-REHER sy-vline 
WA_RECN_CONTRACT_STR-RBEAR sy-vline 
WA_RECN_CONTRACT_STR-DBEAR sy-vline 
WA_RECN_CONTRACT_STR-TBEAR sy-vline 
WA_RECN_CONTRACT_STR-RBHER sy-vline 
WA_RECN_CONTRACT_STR-RESPONSIBLE sy-vline 
WA_RECN_CONTRACT_STR-USEREXCLUSIVE sy-vline 
WA_RECN_CONTRACT_STR-AUTHGRP sy-vline 
WA_RECN_CONTRACT_STR-RECNTYPE sy-vline 
WA_RECN_CONTRACT_STR-RECNBEG sy-vline 
WA_RECN_CONTRACT_STR-RECNENDABS sy-vline 
WA_RECN_CONTRACT_STR-RECNTXT sy-vline 
WA_RECN_CONTRACT_STR-RECNDACTIV sy-vline 
WA_RECN_CONTRACT_STR-RECNTLAW sy-vline 
WA_RECN_CONTRACT_STR-RECNTXTOLD sy-vline 
WA_RECN_CONTRACT_STR-RECNBUKRSCOLLECT sy-vline 
WA_RECN_CONTRACT_STR-RECNNRCOLLECT sy-vline 
WA_RECN_CONTRACT_STR-RECNCNCURR sy-vline 
WA_RECN_CONTRACT_STR-INDUSTRY sy-vline 
WA_RECN_CONTRACT_STR-SRRELEVANT sy-vline 
WA_RECN_CONTRACT_STR-DPTARGETTYPE sy-vline 
WA_RECN_CONTRACT_STR-RECNDAT sy-vline 
WA_RECN_CONTRACT_STR-RECN2DAT sy-vline 
WA_RECN_CONTRACT_STR-RECNDPO sy-vline 
WA_RECN_CONTRACT_STR-RECNEND1ST sy-vline 
WA_RECN_CONTRACT_STR-RECNNOTPER sy-vline 
WA_RECN_CONTRACT_STR-RECNNOTRECEIPT sy-vline 
WA_RECN_CONTRACT_STR-RECNNOTREASON sy-vline 
WA_RECN_CONTRACT_STR-RECNDAKTKU sy-vline 
WA_RECN_CONTRACT_STR-CFARCHIVEDTO sy-vline 
WA_RECN_CONTRACT_STR-CFLOCKEDTO sy-vline 
WA_RECN_CONTRACT_STR-CFPOSTINGFROM sy-vline 
WA_RECN_CONTRACT_STR-BENOCN sy-vline 
WA_RECN_CONTRACT_STR-TRANSPOSSFROM sy-vline 
WA_RECN_CONTRACT_STR-TRANSPOSSTO sy-vline 
WA_RECN_CONTRACT_STR-HASMULTIASSIGN sy-vline 
WA_RECN_CONTRACT_STR-POSSDATEFROM sy-vline 
WA_RECN_CONTRACT_STR-POSSDATETO sy-vline 
WA_RECN_CONTRACT_STR-RELEVANTEVAL sy-vline 
WA_RECN_CONTRACT_STR-DUMMY_REC_PS sy-vline 
WA_RECN_CONTRACT_STR-SECDEPRELEVANT sy-vline 
WA_RECN_CONTRACT_STR-NOTADJSDCN sy-vline      INTO ld_text SEPARATED BY SPACE.

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