ABAP Select data from SAP table IICL_RESERVE_DETAIL into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM IICL_RESERVE_DETAIL
*  INTO TABLE @DATA(IT_IICL_RESERVE_DETAIL2).
*--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_IICL_RESERVE_DETAIL INDEX 1 INTO DATA(WA_IICL_RESERVE_DETAIL2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<IICL_RESERVE_DETAIL>-CLIENT = 1.
<IICL_RESERVE_DETAIL>-ACTIVE = 1.
<IICL_RESERVE_DETAIL>-CLAIM = 1.
<IICL_RESERVE_DETAIL>-SUBCL = 1.
<IICL_RESERVE_DETAIL>-RESTYPE = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_IICL_RESERVE_DETAIL-CURR, sy-vline,
  WA_IICL_RESERVE_DETAIL-CHANGETIME, sy-vline,
  WA_IICL_RESERVE_DETAIL-CHANGEDBY, sy-vline,
  WA_IICL_RESERVE_DETAIL-DELETED, sy-vline,
  WA_IICL_RESERVE_DETAIL-GROSSRES, sy-vline,
  WA_IICL_RESERVE_DETAIL-METHOD, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_IICL_RESERVE_DETAIL 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_IICL_RESERVE_DETAIL 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_IICL_RESERVE_DETAIL INTO WA_IICL_RESERVE_DETAIL.


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

*Conversion exit TSTAM, internal->external for field CHANGETIME
CALL FUNCTION 'CONVERSION_EXIT_TSTAM_OUTPUT'
  EXPORTING
    input =                      WA_IICL_RESERVE_DETAIL-CHANGETIME
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IICL_RESERVE_DETAIL-CHANGETIME.
WRITE:/ 'New Value:', ld_input.

*Conversion exit TSTAM, internal->external for field APPROVEDTIME
CALL FUNCTION 'CONVERSION_EXIT_TSTAM_OUTPUT'
  EXPORTING
    input =                      WA_IICL_RESERVE_DETAIL-APPROVEDTIME
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IICL_RESERVE_DETAIL-APPROVEDTIME.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field RSQUANUNIT
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_IICL_RESERVE_DETAIL-RSQUANUNIT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IICL_RESERVE_DETAIL-RSQUANUNIT.
WRITE:/ 'New Value:', ld_input.

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

*Conversion exit TSTAM, internal->external for field CHTIME_NETRES
CALL FUNCTION 'CONVERSION_EXIT_TSTAM_OUTPUT'
  EXPORTING
    input =                      WA_IICL_RESERVE_DETAIL-CHTIME_NETRES
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IICL_RESERVE_DETAIL-CHTIME_NETRES.
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_IICL_RESERVE_DETAIL_STR, 
CLIENT TYPE STRING,
ACTIVE TYPE STRING,
CLAIM TYPE STRING,
SUBCL TYPE STRING,
RESTYPE TYPE STRING,
CURR TYPE STRING,
CHANGETIME TYPE STRING,
CHANGEDBY TYPE STRING,
DELETED TYPE STRING,
GROSSRES TYPE STRING,
METHOD TYPE STRING,
XAPPROVED TYPE STRING,
APPROVEDBY TYPE STRING,
APPROVEDTIME TYPE STRING,
CHANGEREASON TYPE STRING,
POSTDATE TYPE STRING,
RSAMTPERUNIT TYPE STRING,
RSQUANTITY TYPE STRING,
RSQUANUNIT TYPE STRING,
RSPENDING TYPE STRING,
RSREASON_REJ TYPE STRING,
ASSIGN_GUID TYPE STRING,
RESTYPE_MI TYPE STRING,
SUBCLTYPE TYPE STRING,
SUBCLTYPE_NAME TYPE STRING,
SUBCLTYPEDESC TYPE STRING,
COVERAGE TYPE STRING,
COVTYPE TYPE STRING,
COVTYPE_NAME TYPE STRING,
BPARTNER TYPE STRING,
DESCRIP TYPE STRING,
RESTYPE_NAME TYPE STRING,
RESCAT_NAME TYPE STRING,
LOSSEXP_NAME TYPE STRING,
CHANGEREASON_NAME TYPE STRING,
METHOD_NAME TYPE STRING,
XRECOVERY TYPE STRING,
XINVISIBLE TYPE STRING,
CHANGEDATET TYPE STRING,
CHANGETIMET TYPE STRING,
APPROVEDDATET TYPE STRING,
APPROVEDTIMET TYPE STRING,
RSQUANUNITN TYPE STRING,
XMULT_INS TYPE STRING,
XOWN_GL TYPE STRING,
NEWAMOUNT TYPE STRING,
INCREAS TYPE STRING,
NEW_CURR TYPE STRING,
NEW_RES TYPE STRING,
CHANGE_CURR TYPE STRING,
CHANGE_RES TYPE STRING,
FICURR TYPE STRING,
FIRES TYPE STRING,
NETCURR TYPE STRING,
NETRES TYPE STRING,
PAYCURR TYPE STRING,
PAMPAID TYPE STRING,
QUOTA TYPE STRING,
OLD_GROSSRES TYPE STRING,
OLD_NETRES TYPE STRING,
AUTH_MODE TYPE STRING,
AUTH_DECISION TYPE STRING,
CHTIME_NETRES TYPE STRING,
PAMPAID_RESCUR TYPE STRING,END OF T_EKKO_STR.
DATA: WA_IICL_RESERVE_DETAIL_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_IICL_RESERVE_DETAIL_STR-CLIENT sy-vline 
WA_IICL_RESERVE_DETAIL_STR-ACTIVE sy-vline 
WA_IICL_RESERVE_DETAIL_STR-CLAIM sy-vline 
WA_IICL_RESERVE_DETAIL_STR-SUBCL sy-vline 
WA_IICL_RESERVE_DETAIL_STR-RESTYPE sy-vline 
WA_IICL_RESERVE_DETAIL_STR-CURR sy-vline 
WA_IICL_RESERVE_DETAIL_STR-CHANGETIME sy-vline 
WA_IICL_RESERVE_DETAIL_STR-CHANGEDBY sy-vline 
WA_IICL_RESERVE_DETAIL_STR-DELETED sy-vline 
WA_IICL_RESERVE_DETAIL_STR-GROSSRES sy-vline 
WA_IICL_RESERVE_DETAIL_STR-METHOD sy-vline 
WA_IICL_RESERVE_DETAIL_STR-XAPPROVED sy-vline 
WA_IICL_RESERVE_DETAIL_STR-APPROVEDBY sy-vline 
WA_IICL_RESERVE_DETAIL_STR-APPROVEDTIME sy-vline 
WA_IICL_RESERVE_DETAIL_STR-CHANGEREASON sy-vline 
WA_IICL_RESERVE_DETAIL_STR-POSTDATE sy-vline 
WA_IICL_RESERVE_DETAIL_STR-RSAMTPERUNIT sy-vline 
WA_IICL_RESERVE_DETAIL_STR-RSQUANTITY sy-vline 
WA_IICL_RESERVE_DETAIL_STR-RSQUANUNIT sy-vline 
WA_IICL_RESERVE_DETAIL_STR-RSPENDING sy-vline 
WA_IICL_RESERVE_DETAIL_STR-RSREASON_REJ sy-vline 
WA_IICL_RESERVE_DETAIL_STR-ASSIGN_GUID sy-vline 
WA_IICL_RESERVE_DETAIL_STR-RESTYPE_MI sy-vline 
WA_IICL_RESERVE_DETAIL_STR-SUBCLTYPE sy-vline 
WA_IICL_RESERVE_DETAIL_STR-SUBCLTYPE_NAME sy-vline 
WA_IICL_RESERVE_DETAIL_STR-SUBCLTYPEDESC sy-vline 
WA_IICL_RESERVE_DETAIL_STR-COVERAGE sy-vline 
WA_IICL_RESERVE_DETAIL_STR-COVTYPE sy-vline 
WA_IICL_RESERVE_DETAIL_STR-COVTYPE_NAME sy-vline 
WA_IICL_RESERVE_DETAIL_STR-BPARTNER sy-vline 
WA_IICL_RESERVE_DETAIL_STR-DESCRIP sy-vline 
WA_IICL_RESERVE_DETAIL_STR-RESTYPE_NAME sy-vline 
WA_IICL_RESERVE_DETAIL_STR-RESCAT_NAME sy-vline 
WA_IICL_RESERVE_DETAIL_STR-LOSSEXP_NAME sy-vline 
WA_IICL_RESERVE_DETAIL_STR-CHANGEREASON_NAME sy-vline 
WA_IICL_RESERVE_DETAIL_STR-METHOD_NAME sy-vline 
WA_IICL_RESERVE_DETAIL_STR-XRECOVERY sy-vline 
WA_IICL_RESERVE_DETAIL_STR-XINVISIBLE sy-vline 
WA_IICL_RESERVE_DETAIL_STR-CHANGEDATET sy-vline 
WA_IICL_RESERVE_DETAIL_STR-CHANGETIMET sy-vline 
WA_IICL_RESERVE_DETAIL_STR-APPROVEDDATET sy-vline 
WA_IICL_RESERVE_DETAIL_STR-APPROVEDTIMET sy-vline 
WA_IICL_RESERVE_DETAIL_STR-RSQUANUNITN sy-vline 
WA_IICL_RESERVE_DETAIL_STR-XMULT_INS sy-vline 
WA_IICL_RESERVE_DETAIL_STR-XOWN_GL sy-vline 
WA_IICL_RESERVE_DETAIL_STR-NEWAMOUNT sy-vline 
WA_IICL_RESERVE_DETAIL_STR-INCREAS sy-vline 
WA_IICL_RESERVE_DETAIL_STR-NEW_CURR sy-vline 
WA_IICL_RESERVE_DETAIL_STR-NEW_RES sy-vline 
WA_IICL_RESERVE_DETAIL_STR-CHANGE_CURR sy-vline 
WA_IICL_RESERVE_DETAIL_STR-CHANGE_RES sy-vline 
WA_IICL_RESERVE_DETAIL_STR-FICURR sy-vline 
WA_IICL_RESERVE_DETAIL_STR-FIRES sy-vline 
WA_IICL_RESERVE_DETAIL_STR-NETCURR sy-vline 
WA_IICL_RESERVE_DETAIL_STR-NETRES sy-vline 
WA_IICL_RESERVE_DETAIL_STR-PAYCURR sy-vline 
WA_IICL_RESERVE_DETAIL_STR-PAMPAID sy-vline 
WA_IICL_RESERVE_DETAIL_STR-QUOTA sy-vline 
WA_IICL_RESERVE_DETAIL_STR-OLD_GROSSRES sy-vline 
WA_IICL_RESERVE_DETAIL_STR-OLD_NETRES sy-vline 
WA_IICL_RESERVE_DETAIL_STR-AUTH_MODE sy-vline 
WA_IICL_RESERVE_DETAIL_STR-AUTH_DECISION sy-vline 
WA_IICL_RESERVE_DETAIL_STR-CHTIME_NETRES sy-vline 
WA_IICL_RESERVE_DETAIL_STR-PAMPAID_RESCUR sy-vline      INTO ld_text SEPARATED BY SPACE.

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