ABAP Select data from SAP table REYC_EXPPOOL_L 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_L 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_L. 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_L 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_L TYPE STANDARD TABLE OF REYC_EXPPOOL_L,
      WA_REYC_EXPPOOL_L TYPE REYC_EXPPOOL_L,
      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_L> TYPE REYC_EXPPOOL_L.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM REYC_EXPPOOL_L
*  INTO TABLE @DATA(IT_REYC_EXPPOOL_L2).
*--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_L INDEX 1 INTO DATA(WA_REYC_EXPPOOL_L2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<REYC_EXPPOOL_L>-EXPENSEPOOL = 1.
<REYC_EXPPOOL_L>-CONTROLLABLE = 1.
<REYC_EXPPOOL_L>-PGID = 1.
<REYC_EXPPOOL_L>-EXPTYPE = 1.
<REYC_EXPPOOL_L>-WAERS = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_REYC_EXPPOOL_L-COSTELEMENT, sy-vline,
  WA_REYC_EXPPOOL_L-EFFECTIVESTART, sy-vline,
  WA_REYC_EXPPOOL_L-ENDDATE, sy-vline,
  WA_REYC_EXPPOOL_L-SEASONALITYKEY, sy-vline,
  WA_REYC_EXPPOOL_L-SEASONVALIDFROM, sy-vline,
  WA_REYC_EXPPOOL_L-SEASONVALIDTO, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_REYC_EXPPOOL_L 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_L 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_L INTO WA_REYC_EXPPOOL_L.


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

*Conversion exit ALPHA, internal->external for field COSTELEMENT
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_REYC_EXPPOOL_L-COSTELEMENT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_REYC_EXPPOOL_L-COSTELEMENT.
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_L_STR, 
EXPENSEPOOL TYPE STRING,
CONTROLLABLE TYPE STRING,
PGID TYPE STRING,
EXPTYPE TYPE STRING,
WAERS TYPE STRING,
COSTELEMENT TYPE STRING,
EFFECTIVESTART TYPE STRING,
ENDDATE TYPE STRING,
SEASONALITYKEY TYPE STRING,
SEASONVALIDFROM TYPE STRING,
SEASONVALIDTO TYPE STRING,
BASEYEARRATE TYPE STRING,
CURRYEARRATE TYPE STRING,
BYAMOUNT TYPE STRING,
BYPERCENT TYPE STRING,
GROSSMETHODTEXT TYPE STRING,
OCCRATE TYPE STRING,
GROSSAMNT TYPE STRING,
GROSSRATE TYPE STRING,
DENOMMETHODTEXT TYPE STRING,
THRESHOLD TYPE STRING,
DENOMINATOR TYPE STRING,
FIXEDSHARE TYPE STRING,
MARKUPPERCPRE TYPE STRING,
MARKUPAMNTPRE TYPE STRING,
ADMINFEEPRE TYPE STRING,
MARKUPPERCPOS TYPE STRING,
MARKUPAMNTPOS TYPE STRING,
ADMINFEEPOS TYPE STRING,
CAPPINGRATEPRE TYPE STRING,
CAPPINGAMNTPRE TYPE STRING,
CAPPINGRATEPOS TYPE STRING,
CAPPINGAMNTPOS TYPE STRING,
FIXEDAMOUNT TYPE STRING,
MTCPERCENT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_REYC_EXPPOOL_L_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_L_STR-EXPENSEPOOL sy-vline 
WA_REYC_EXPPOOL_L_STR-CONTROLLABLE sy-vline 
WA_REYC_EXPPOOL_L_STR-PGID sy-vline 
WA_REYC_EXPPOOL_L_STR-EXPTYPE sy-vline 
WA_REYC_EXPPOOL_L_STR-WAERS sy-vline 
WA_REYC_EXPPOOL_L_STR-COSTELEMENT sy-vline 
WA_REYC_EXPPOOL_L_STR-EFFECTIVESTART sy-vline 
WA_REYC_EXPPOOL_L_STR-ENDDATE sy-vline 
WA_REYC_EXPPOOL_L_STR-SEASONALITYKEY sy-vline 
WA_REYC_EXPPOOL_L_STR-SEASONVALIDFROM sy-vline 
WA_REYC_EXPPOOL_L_STR-SEASONVALIDTO sy-vline 
WA_REYC_EXPPOOL_L_STR-BASEYEARRATE sy-vline 
WA_REYC_EXPPOOL_L_STR-CURRYEARRATE sy-vline 
WA_REYC_EXPPOOL_L_STR-BYAMOUNT sy-vline 
WA_REYC_EXPPOOL_L_STR-BYPERCENT sy-vline 
WA_REYC_EXPPOOL_L_STR-GROSSMETHODTEXT sy-vline 
WA_REYC_EXPPOOL_L_STR-OCCRATE sy-vline 
WA_REYC_EXPPOOL_L_STR-GROSSAMNT sy-vline 
WA_REYC_EXPPOOL_L_STR-GROSSRATE sy-vline 
WA_REYC_EXPPOOL_L_STR-DENOMMETHODTEXT sy-vline 
WA_REYC_EXPPOOL_L_STR-THRESHOLD sy-vline 
WA_REYC_EXPPOOL_L_STR-DENOMINATOR sy-vline 
WA_REYC_EXPPOOL_L_STR-FIXEDSHARE sy-vline 
WA_REYC_EXPPOOL_L_STR-MARKUPPERCPRE sy-vline 
WA_REYC_EXPPOOL_L_STR-MARKUPAMNTPRE sy-vline 
WA_REYC_EXPPOOL_L_STR-ADMINFEEPRE sy-vline 
WA_REYC_EXPPOOL_L_STR-MARKUPPERCPOS sy-vline 
WA_REYC_EXPPOOL_L_STR-MARKUPAMNTPOS sy-vline 
WA_REYC_EXPPOOL_L_STR-ADMINFEEPOS sy-vline 
WA_REYC_EXPPOOL_L_STR-CAPPINGRATEPRE sy-vline 
WA_REYC_EXPPOOL_L_STR-CAPPINGAMNTPRE sy-vline 
WA_REYC_EXPPOOL_L_STR-CAPPINGRATEPOS sy-vline 
WA_REYC_EXPPOOL_L_STR-CAPPINGAMNTPOS sy-vline 
WA_REYC_EXPPOOL_L_STR-FIXEDAMOUNT sy-vline 
WA_REYC_EXPPOOL_L_STR-MTCPERCENT sy-vline      INTO ld_text SEPARATED BY SPACE.

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