ABAP Select data from SAP table REXCJP_CONTRACT into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP REXCJP_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 REXCJP_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 REXCJP_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_REXCJP_CONTRACT TYPE STANDARD TABLE OF REXCJP_CONTRACT,
      WA_REXCJP_CONTRACT TYPE REXCJP_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: <REXCJP_CONTRACT> TYPE REXCJP_CONTRACT.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM REXCJP_CONTRACT
*  INTO TABLE @DATA(IT_REXCJP_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_REXCJP_CONTRACT INDEX 1 INTO DATA(WA_REXCJP_CONTRACT2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<REXCJP_CONTRACT>-CNBUKRS = 1.
<REXCJP_CONTRACT>-RECNR = 1.
<REXCJP_CONTRACT>-VENDORID = 1.
<REXCJP_CONTRACT>-PYMENTCAT = 1.
<REXCJP_CONTRACT>-RECNTYPE = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_REXCJP_CONTRACT-BP, sy-vline,
  WA_REXCJP_CONTRACT-BP_TYPE, sy-vline,
  WA_REXCJP_CONTRACT-BP_ROLE, sy-vline,
  WA_REXCJP_CONTRACT-BP_NAME, sy-vline,
  WA_REXCJP_CONTRACT-BPADDR, sy-vline,
  WA_REXCJP_CONTRACT-BP_COUNTRY, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_REXCJP_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_REXCJP_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_REXCJP_CONTRACT INTO WA_REXCJP_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 RECNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_REXCJP_CONTRACT-RECNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_REXCJP_CONTRACT-RECNR.
WRITE:/ 'New Value:', ld_input.

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

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

*Conversion exit ALPHA, internal->external for field AGENT
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_REXCJP_CONTRACT-AGENT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_REXCJP_CONTRACT-AGENT.
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_REXCJP_CONTRACT_STR, 
CNBUKRS TYPE STRING,
RECNR TYPE STRING,
VENDORID TYPE STRING,
PYMENTCAT TYPE STRING,
RECNTYPE TYPE STRING,
BP TYPE STRING,
BP_TYPE TYPE STRING,
BP_ROLE TYPE STRING,
BP_NAME TYPE STRING,
BPADDR TYPE STRING,
BP_COUNTRY TYPE STRING,
FLOWTYPE TYPE STRING,
AGENT TYPE STRING,
AGENT_NAME TYPE STRING,
AGENTADDR TYPE STRING,
AGENT_COUNTRY TYPE STRING,
AGENT_TYPE TYPE STRING,
RECNINTRENO TYPE STRING,
REOBJNR TYPE STRING,
XIDENT TYPE STRING,
XOBJTYPE TYPE STRING,
OBJADDR TYPE STRING,
COMMISSION TYPE STRING,
BASIS TYPE STRING,
DETAIL TYPE STRING,
OBJNR TYPE STRING,END OF T_EKKO_STR.
DATA: WA_REXCJP_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_REXCJP_CONTRACT_STR-CNBUKRS sy-vline 
WA_REXCJP_CONTRACT_STR-RECNR sy-vline 
WA_REXCJP_CONTRACT_STR-VENDORID sy-vline 
WA_REXCJP_CONTRACT_STR-PYMENTCAT sy-vline 
WA_REXCJP_CONTRACT_STR-RECNTYPE sy-vline 
WA_REXCJP_CONTRACT_STR-BP sy-vline 
WA_REXCJP_CONTRACT_STR-BP_TYPE sy-vline 
WA_REXCJP_CONTRACT_STR-BP_ROLE sy-vline 
WA_REXCJP_CONTRACT_STR-BP_NAME sy-vline 
WA_REXCJP_CONTRACT_STR-BPADDR sy-vline 
WA_REXCJP_CONTRACT_STR-BP_COUNTRY sy-vline 
WA_REXCJP_CONTRACT_STR-FLOWTYPE sy-vline 
WA_REXCJP_CONTRACT_STR-AGENT sy-vline 
WA_REXCJP_CONTRACT_STR-AGENT_NAME sy-vline 
WA_REXCJP_CONTRACT_STR-AGENTADDR sy-vline 
WA_REXCJP_CONTRACT_STR-AGENT_COUNTRY sy-vline 
WA_REXCJP_CONTRACT_STR-AGENT_TYPE sy-vline 
WA_REXCJP_CONTRACT_STR-RECNINTRENO sy-vline 
WA_REXCJP_CONTRACT_STR-REOBJNR sy-vline 
WA_REXCJP_CONTRACT_STR-XIDENT sy-vline 
WA_REXCJP_CONTRACT_STR-XOBJTYPE sy-vline 
WA_REXCJP_CONTRACT_STR-OBJADDR sy-vline 
WA_REXCJP_CONTRACT_STR-COMMISSION sy-vline 
WA_REXCJP_CONTRACT_STR-BASIS sy-vline 
WA_REXCJP_CONTRACT_STR-DETAIL sy-vline 
WA_REXCJP_CONTRACT_STR-OBJNR sy-vline      INTO ld_text SEPARATED BY SPACE.

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