ABAP Select data from SAP table REXCJPCONTRACT into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM REXCJPCONTRACT
*  INTO TABLE @DATA(IT_REXCJPCONTRACT2).
*--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_REXCJPCONTRACT INDEX 1 INTO DATA(WA_REXCJPCONTRACT2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<REXCJPCONTRACT>-REOBJNR = 1.
<REXCJPCONTRACT>-BUKRS = 1.
<REXCJPCONTRACT>-RECNNR = 1.
<REXCJPCONTRACT>-IDENTTYPE = 1.
<REXCJPCONTRACT>-IDENTKEY = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_REXCJPCONTRACT-RECNTYPE, sy-vline,
  WA_REXCJPCONTRACT-RECNTXT, sy-vline,
  WA_REXCJPCONTRACT-RECNDAT, sy-vline,
  WA_REXCJPCONTRACT-RECN2DAT, sy-vline,
  WA_REXCJPCONTRACT-RECNBEG, sy-vline,
  WA_REXCJPCONTRACT-RECNDPO, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_REXCJPCONTRACT 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_REXCJPCONTRACT 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_REXCJPCONTRACT INTO WA_REXCJPCONTRACT.


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

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

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

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

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

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

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

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