ABAP Select data from SAP table REYC_PROVISION into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM REYC_PROVISION
*  INTO TABLE @DATA(IT_REYC_PROVISION2).
*--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_REYC_PROVISION INDEX 1 INTO DATA(WA_REYC_PROVISION2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<REYC_PROVISION>-MANDT = 1.
<REYC_PROVISION>-INTRENO = 1.
<REYC_PROVISION>-TERMTYPE = 1.
<REYC_PROVISION>-TERMNO = 1.
<REYC_PROVISION>-VALIDFROM = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_REYC_PROVISION-VALIDTO, sy-vline,
  WA_REYC_PROVISION-PROVISIONMETHOD, sy-vline,
  WA_REYC_PROVISION-BASEYEAR, sy-vline,
  WA_REYC_PROVISION-BASEYEARAMT, sy-vline,
  WA_REYC_PROVISION-BASEYEARRATE, sy-vline,
  WA_REYC_PROVISION-CURRYEAR, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_REYC_PROVISION 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_REYC_PROVISION 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_REYC_PROVISION INTO WA_REYC_PROVISION.


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

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

*Conversion exit CUNIT, internal->external for field FEINS
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_REYC_PROVISION-FEINS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_REYC_PROVISION-FEINS.
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_REYC_PROVISION_STR, 
MANDT TYPE STRING,
INTRENO TYPE STRING,
TERMTYPE TYPE STRING,
TERMNO TYPE STRING,
VALIDFROM TYPE STRING,
VALIDTO TYPE STRING,
PROVISIONMETHOD TYPE STRING,
BASEYEAR TYPE STRING,
BASEYEARAMT TYPE STRING,
BASEYEARRATE TYPE STRING,
CURRYEAR TYPE STRING,
CURRYEARAMT TYPE STRING,
CURRYEARRATE TYPE STRING,
STOPYEARAMT TYPE STRING,
STOPYEARRATE TYPE STRING,
BASEMETHOD TYPE STRING,
BASEYEARSTOPPER TYPE STRING,
BASEYEARSTOPAMT TYPE STRING,
BASEYEARINCPER TYPE STRING,
BASEYEARINCAMT TYPE STRING,
DISTRBY TYPE STRING,
GROSSUPMETHOD TYPE STRING,
GROSSUPMETHOD1 TYPE STRING,
OCCRATE TYPE STRING,
GROSSAMNT TYPE STRING,
GROSSRATE TYPE STRING,
WAERS TYPE STRING,
FEINS TYPE STRING,
DENMETHOD TYPE STRING,
DENMETHOD1 TYPE STRING,
DENMETHODINT TYPE STRING,
DENMETHODINT1 TYPE STRING,
THRESHOLD TYPE STRING,
DENOMINATOR TYPE STRING,
FIXEDSHARE TYPE STRING,
CYISBY TYPE STRING,
BYCUMMALATIVE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_REYC_PROVISION_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_REYC_PROVISION_STR-MANDT sy-vline 
WA_REYC_PROVISION_STR-INTRENO sy-vline 
WA_REYC_PROVISION_STR-TERMTYPE sy-vline 
WA_REYC_PROVISION_STR-TERMNO sy-vline 
WA_REYC_PROVISION_STR-VALIDFROM sy-vline 
WA_REYC_PROVISION_STR-VALIDTO sy-vline 
WA_REYC_PROVISION_STR-PROVISIONMETHOD sy-vline 
WA_REYC_PROVISION_STR-BASEYEAR sy-vline 
WA_REYC_PROVISION_STR-BASEYEARAMT sy-vline 
WA_REYC_PROVISION_STR-BASEYEARRATE sy-vline 
WA_REYC_PROVISION_STR-CURRYEAR sy-vline 
WA_REYC_PROVISION_STR-CURRYEARAMT sy-vline 
WA_REYC_PROVISION_STR-CURRYEARRATE sy-vline 
WA_REYC_PROVISION_STR-STOPYEARAMT sy-vline 
WA_REYC_PROVISION_STR-STOPYEARRATE sy-vline 
WA_REYC_PROVISION_STR-BASEMETHOD sy-vline 
WA_REYC_PROVISION_STR-BASEYEARSTOPPER sy-vline 
WA_REYC_PROVISION_STR-BASEYEARSTOPAMT sy-vline 
WA_REYC_PROVISION_STR-BASEYEARINCPER sy-vline 
WA_REYC_PROVISION_STR-BASEYEARINCAMT sy-vline 
WA_REYC_PROVISION_STR-DISTRBY sy-vline 
WA_REYC_PROVISION_STR-GROSSUPMETHOD sy-vline 
WA_REYC_PROVISION_STR-GROSSUPMETHOD1 sy-vline 
WA_REYC_PROVISION_STR-OCCRATE sy-vline 
WA_REYC_PROVISION_STR-GROSSAMNT sy-vline 
WA_REYC_PROVISION_STR-GROSSRATE sy-vline 
WA_REYC_PROVISION_STR-WAERS sy-vline 
WA_REYC_PROVISION_STR-FEINS sy-vline 
WA_REYC_PROVISION_STR-DENMETHOD sy-vline 
WA_REYC_PROVISION_STR-DENMETHOD1 sy-vline 
WA_REYC_PROVISION_STR-DENMETHODINT sy-vline 
WA_REYC_PROVISION_STR-DENMETHODINT1 sy-vline 
WA_REYC_PROVISION_STR-THRESHOLD sy-vline 
WA_REYC_PROVISION_STR-DENOMINATOR sy-vline 
WA_REYC_PROVISION_STR-FIXEDSHARE sy-vline 
WA_REYC_PROVISION_STR-CYISBY sy-vline 
WA_REYC_PROVISION_STR-BYCUMMALATIVE sy-vline      INTO ld_text SEPARATED BY SPACE.

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