ABAP Select data from SAP table REYC_EXPPOOL into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP REYC_EXPPOOL 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_EXPPOOL. 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_EXPPOOL 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_EXPPOOL TYPE STANDARD TABLE OF REYC_EXPPOOL,
      WA_REYC_EXPPOOL TYPE REYC_EXPPOOL,
      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_EXPPOOL> TYPE REYC_EXPPOOL.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM REYC_EXPPOOL
*  INTO TABLE @DATA(IT_REYC_EXPPOOL2).
*--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_EXPPOOL INDEX 1 INTO DATA(WA_REYC_EXPPOOL2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<REYC_EXPPOOL>-MANDT = 1.
<REYC_EXPPOOL>-OBJNRSRC = 1.
<REYC_EXPPOOL>-OBJASSTYPE = 1.
<REYC_EXPPOOL>-OBJNRTRG = 1.
<REYC_EXPPOOL>-VALIDFROM = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_REYC_EXPPOOL-XOBJASSTYPE, sy-vline,
  WA_REYC_EXPPOOL-XOBJTYPESRC, sy-vline,
  WA_REYC_EXPPOOL-XOBJTYPETRG, sy-vline,
  WA_REYC_EXPPOOL-IDENTSRC, sy-vline,
  WA_REYC_EXPPOOL-IDENTTRG, sy-vline,
  WA_REYC_EXPPOOL-IDENTKEYSRC, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_REYC_EXPPOOL 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_EXPPOOL 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_EXPPOOL INTO WA_REYC_EXPPOOL.


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

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

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

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

*Conversion exit ALPHA, internal->external for field PGID
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_REYC_EXPPOOL-PGID
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_REYC_EXPPOOL-PGID.
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_EXPPOOL_STR, 
MANDT TYPE STRING,
OBJNRSRC TYPE STRING,
OBJASSTYPE TYPE STRING,
OBJNRTRG TYPE STRING,
VALIDFROM TYPE STRING,
XOBJASSTYPE TYPE STRING,
XOBJTYPESRC TYPE STRING,
XOBJTYPETRG TYPE STRING,
IDENTSRC TYPE STRING,
IDENTTRG TYPE STRING,
IDENTKEYSRC TYPE STRING,
IDENTKEYTRG TYPE STRING,
DESCRIPTIONSRC TYPE STRING,
DESCRIPTIONTRG TYPE STRING,
XLOBJTYPESRC TYPE STRING,
XLOBJTYPETRG TYPE STRING,
HASNOTE TYPE STRING,
RSOBJTYPE TYPE STRING,
XRSOBJTYPE TYPE STRING,
OBJTYPESRC TYPE STRING,
OBJTYPETRG TYPE STRING,
OBJASS_INDEX TYPE STRING,
PROVISION TYPE STRING,
CAP TYPE STRING,
MARKUP TYPE STRING,
MAJORTENANT TYPE STRING,
EXPPOOL TYPE STRING,
OBJNRGRP TYPE STRING,
INTRENO TYPE STRING,
PGOBJNR TYPE STRING,
PGID TYPE STRING,END OF T_EKKO_STR.
DATA: WA_REYC_EXPPOOL_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_EXPPOOL_STR-MANDT sy-vline 
WA_REYC_EXPPOOL_STR-OBJNRSRC sy-vline 
WA_REYC_EXPPOOL_STR-OBJASSTYPE sy-vline 
WA_REYC_EXPPOOL_STR-OBJNRTRG sy-vline 
WA_REYC_EXPPOOL_STR-VALIDFROM sy-vline 
WA_REYC_EXPPOOL_STR-XOBJASSTYPE sy-vline 
WA_REYC_EXPPOOL_STR-XOBJTYPESRC sy-vline 
WA_REYC_EXPPOOL_STR-XOBJTYPETRG sy-vline 
WA_REYC_EXPPOOL_STR-IDENTSRC sy-vline 
WA_REYC_EXPPOOL_STR-IDENTTRG sy-vline 
WA_REYC_EXPPOOL_STR-IDENTKEYSRC sy-vline 
WA_REYC_EXPPOOL_STR-IDENTKEYTRG sy-vline 
WA_REYC_EXPPOOL_STR-DESCRIPTIONSRC sy-vline 
WA_REYC_EXPPOOL_STR-DESCRIPTIONTRG sy-vline 
WA_REYC_EXPPOOL_STR-XLOBJTYPESRC sy-vline 
WA_REYC_EXPPOOL_STR-XLOBJTYPETRG sy-vline 
WA_REYC_EXPPOOL_STR-HASNOTE sy-vline 
WA_REYC_EXPPOOL_STR-RSOBJTYPE sy-vline 
WA_REYC_EXPPOOL_STR-XRSOBJTYPE sy-vline 
WA_REYC_EXPPOOL_STR-OBJTYPESRC sy-vline 
WA_REYC_EXPPOOL_STR-OBJTYPETRG sy-vline 
WA_REYC_EXPPOOL_STR-OBJASS_INDEX sy-vline 
WA_REYC_EXPPOOL_STR-PROVISION sy-vline 
WA_REYC_EXPPOOL_STR-CAP sy-vline 
WA_REYC_EXPPOOL_STR-MARKUP sy-vline 
WA_REYC_EXPPOOL_STR-MAJORTENANT sy-vline 
WA_REYC_EXPPOOL_STR-EXPPOOL sy-vline 
WA_REYC_EXPPOOL_STR-OBJNRGRP sy-vline 
WA_REYC_EXPPOOL_STR-INTRENO sy-vline 
WA_REYC_EXPPOOL_STR-PGOBJNR sy-vline 
WA_REYC_EXPPOOL_STR-PGID sy-vline      INTO ld_text SEPARATED BY SPACE.

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