ABAP Select data from SAP table RELUC_CONTRACT_TYPE into internal table

Get Example source ABAP code based on a different SAP table
  Get ABAP code

Below is a number of ABAP code snippets to demonstrate how to select data from SAP RELUC_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 RELUC_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 RELUC_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_RELUC_CONTRACT_TYPE TYPE STANDARD TABLE OF RELUC_CONTRACT_TYPE,
      WA_RELUC_CONTRACT_TYPE TYPE RELUC_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: <RELUC_CONTRACT_TYPE> TYPE RELUC_CONTRACT_TYPE.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM RELUC_CONTRACT_TYPE
*  INTO TABLE @DATA(IT_RELUC_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_RELUC_CONTRACT_TYPE INDEX 1 INTO DATA(WA_RELUC_CONTRACT_TYPE2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<RELUC_CONTRACT_TYPE>-MANDT = 1.
<RELUC_CONTRACT_TYPE>-SMVART = 1.
<RELUC_CONTRACT_TYPE>-JTYPNUA = 1.
<RELUC_CONTRACT_TYPE>-RECNCAT = 1.
<RELUC_CONTRACT_TYPE>-NRNR = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_RELUC_CONTRACT_TYPE-FELDSTLST1, sy-vline,
  WA_RELUC_CONTRACT_TYPE-FELDSTLST2, sy-vline,
  WA_RELUC_CONTRACT_TYPE-FELDSTLST3, sy-vline,
  WA_RELUC_CONTRACT_TYPE-JALGVART, sy-vline,
  WA_RELUC_CONTRACT_TYPE-JMULTZUORD, sy-vline,
  WA_RELUC_CONTRACT_TYPE-JNOAREA, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_RELUC_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_RELUC_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_RELUC_CONTRACT_TYPE INTO WA_RELUC_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.
ENDFORM. 

*&---------------------------------------------------------------------*
*& Form process_as_string_field_values
*&---------------------------------------------------------------------*
FORM process_as_string_field_values CHANGING p_EKKO LIKE wa_EKKO.

TYPES: BEGIN OF T_RELUC_CONTRACT_TYPE_STR, 
MANDT TYPE STRING,
SMVART TYPE STRING,
JTYPNUA TYPE STRING,
RECNCAT TYPE STRING,
NRNR TYPE STRING,
FELDSTLST1 TYPE STRING,
FELDSTLST2 TYPE STRING,
FELDSTLST3 TYPE STRING,
JALGVART TYPE STRING,
JMULTZUORD TYPE STRING,
JNOAREA TYPE STRING,
RECNSRELOB TYPE STRING,
GSART TYPE STRING,
JNOVERTEIL TYPE STRING,
JAUTVERTEIL TYPE STRING,
NRNRVOR TYPE STRING,
ROLETYP TYPE STRING,
VARNR TYPE STRING,
TDOBJECT TYPE STRING,
FELDSTLST4 TYPE STRING,
APPL TYPE STRING,
REMANDAT TYPE STRING,
ROLETYP2 TYPE STRING,
RECNNONOTICE TYPE STRING,
NEWCNTYPE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_RELUC_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_RELUC_CONTRACT_TYPE_STR-MANDT sy-vline 
WA_RELUC_CONTRACT_TYPE_STR-SMVART sy-vline 
WA_RELUC_CONTRACT_TYPE_STR-JTYPNUA sy-vline 
WA_RELUC_CONTRACT_TYPE_STR-RECNCAT sy-vline 
WA_RELUC_CONTRACT_TYPE_STR-NRNR sy-vline 
WA_RELUC_CONTRACT_TYPE_STR-FELDSTLST1 sy-vline 
WA_RELUC_CONTRACT_TYPE_STR-FELDSTLST2 sy-vline 
WA_RELUC_CONTRACT_TYPE_STR-FELDSTLST3 sy-vline 
WA_RELUC_CONTRACT_TYPE_STR-JALGVART sy-vline 
WA_RELUC_CONTRACT_TYPE_STR-JMULTZUORD sy-vline 
WA_RELUC_CONTRACT_TYPE_STR-JNOAREA sy-vline 
WA_RELUC_CONTRACT_TYPE_STR-RECNSRELOB sy-vline 
WA_RELUC_CONTRACT_TYPE_STR-GSART sy-vline 
WA_RELUC_CONTRACT_TYPE_STR-JNOVERTEIL sy-vline 
WA_RELUC_CONTRACT_TYPE_STR-JAUTVERTEIL sy-vline 
WA_RELUC_CONTRACT_TYPE_STR-NRNRVOR sy-vline 
WA_RELUC_CONTRACT_TYPE_STR-ROLETYP sy-vline 
WA_RELUC_CONTRACT_TYPE_STR-VARNR sy-vline 
WA_RELUC_CONTRACT_TYPE_STR-TDOBJECT sy-vline 
WA_RELUC_CONTRACT_TYPE_STR-FELDSTLST4 sy-vline 
WA_RELUC_CONTRACT_TYPE_STR-APPL sy-vline 
WA_RELUC_CONTRACT_TYPE_STR-REMANDAT sy-vline 
WA_RELUC_CONTRACT_TYPE_STR-ROLETYP2 sy-vline 
WA_RELUC_CONTRACT_TYPE_STR-RECNNONOTICE sy-vline 
WA_RELUC_CONTRACT_TYPE_STR-NEWCNTYPE sy-vline      INTO ld_text SEPARATED BY SPACE.

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