ABAP Select data from SAP table REOR_RESERVATION_S into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM REOR_RESERVATION_S
*  INTO TABLE @DATA(IT_REOR_RESERVATION_S2).
*--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_REOR_RESERVATION_S INDEX 1 INTO DATA(WA_REOR_RESERVATION_S2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<REOR_RESERVATION_S>-MANDT = 1.
<REOR_RESERVATION_S>-RSGUID = 1.
<REOR_RESERVATION_S>-RSIDEXT = 1.
<REOR_RESERVATION_S>-OBJNROO = 1.
<REOR_RESERVATION_S>-OCCUPANT = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_REOR_RESERVATION_S-OCCUPANTROLE, sy-vline,
  WA_REOR_RESERVATION_S-VALIDFROM, sy-vline,
  WA_REOR_RESERVATION_S-VALIDTO, sy-vline,
  WA_REOR_RESERVATION_S-RSOBJTYPE, sy-vline,
  WA_REOR_RESERVATION_S-RSTYPE, sy-vline,
  WA_REOR_RESERVATION_S-RSRECGUID, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_REOR_RESERVATION_S 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_REOR_RESERVATION_S 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_REOR_RESERVATION_S INTO WA_REOR_RESERVATION_S.


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

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

*Conversion exit RETZS, internal->external for field VALIDFROM
CALL FUNCTION 'CONVERSION_EXIT_RETZS_OUTPUT'
  EXPORTING
    input =                      WA_REOR_RESERVATION_S-VALIDFROM
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_REOR_RESERVATION_S-VALIDFROM.
WRITE:/ 'New Value:', ld_input.

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

*Conversion exit RETZS, internal->external for field RECVALIDFROM
CALL FUNCTION 'CONVERSION_EXIT_RETZS_OUTPUT'
  EXPORTING
    input =                      WA_REOR_RESERVATION_S-RECVALIDFROM
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_REOR_RESERVATION_S-RECVALIDFROM.
WRITE:/ 'New Value:', ld_input.

*Conversion exit RETZS, internal->external for field RECVALIDTO
CALL FUNCTION 'CONVERSION_EXIT_RETZS_OUTPUT'
  EXPORTING
    input =                      WA_REOR_RESERVATION_S-RECVALIDTO
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_REOR_RESERVATION_S-RECVALIDTO.
WRITE:/ 'New Value:', ld_input.

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

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

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

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

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

*Conversion exit ALPHA, internal->external for field RESINDIVIDUAL
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_REOR_RESERVATION_S-RESINDIVIDUAL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_REOR_RESERVATION_S-RESINDIVIDUAL.
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_REOR_RESERVATION_S_STR, 
MANDT TYPE STRING,
RSGUID TYPE STRING,
RSIDEXT TYPE STRING,
OBJNROO TYPE STRING,
OCCUPANT TYPE STRING,
OCCUPANTROLE TYPE STRING,
VALIDFROM TYPE STRING,
VALIDTO TYPE STRING,
RSOBJTYPE TYPE STRING,
RSTYPE TYPE STRING,
RSRECGUID TYPE STRING,
RECVALIDFROM TYPE STRING,
RECVALIDTO TYPE STRING,
STATEIND TYPE STRING,
ISREVERSED TYPE STRING,
ISOCCEXT TYPE STRING,
SETTLETYPE TYPE STRING,
OBJNRCN TYPE STRING,
XRS TYPE STRING,
EXTINVREC TYPE STRING,
RSRESPONSIBLE TYPE STRING,
RSRESPROLE TYPE STRING,
NUMPARTICIPANTS TYPE STRING,
PARTICIPLISTGUID 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,
TZONE TYPE STRING,
FDELETE TYPE STRING,
RESPONSIBLEUSER TYPE STRING,
OCCUPANTUSER TYPE STRING,
EXTINVRECROLE TYPE STRING,
INVRECADDRTYPE TYPE STRING,
DATEFROM TYPE STRING,
DATETO TYPE STRING,
TIMEFROM TYPE STRING,
TIMETO TYPE STRING,
OOIDEXT TYPE STRING,
XOO TYPE STRING,
XRSRESPONSIBLE TYPE STRING,
XOCCUPANT TYPE STRING,
XWEEKDAY TYPE STRING,
XWEEKDAYTO TYPE STRING,
XRSOBJTYPE TYPE STRING,
XRSTYPE TYPE STRING,
XSETTLETYPE TYPE STRING,
IDENTKEYCN TYPE STRING,
XPARTNER TYPE STRING,
PARTNER TYPE STRING,
PARTNERROLE TYPE STRING,
ISRESPONSIBLEUSER TYPE STRING,
ISOCCUPANTUSER TYPE STRING,
OCCINDIVIDUAL TYPE STRING,
RESINDIVIDUAL TYPE STRING,
XEXTINVREC TYPE STRING,
OCCIDENT TYPE STRING,
TOTAL TYPE STRING,
CURRKEY TYPE STRING,
PRICECODE TYPE STRING,
COOBJTYPE TYPE STRING,
SETNAME TYPE STRING,
NUMPARTICIPLIST TYPE STRING,
EXISTSSERVICES TYPE STRING,
XSTATUS TYPE STRING,
ICONSTATUS TYPE STRING,
RESBP TYPE STRING,
RESUSR TYPE STRING,
OCCBP TYPE STRING,
OCCUSR TYPE STRING,
RSBUKRS TYPE STRING,
OCCINDIVIDUALWO TYPE STRING,
RESINDIVIDUALWO TYPE STRING,END OF T_EKKO_STR.
DATA: WA_REOR_RESERVATION_S_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_REOR_RESERVATION_S_STR-MANDT sy-vline 
WA_REOR_RESERVATION_S_STR-RSGUID sy-vline 
WA_REOR_RESERVATION_S_STR-RSIDEXT sy-vline 
WA_REOR_RESERVATION_S_STR-OBJNROO sy-vline 
WA_REOR_RESERVATION_S_STR-OCCUPANT sy-vline 
WA_REOR_RESERVATION_S_STR-OCCUPANTROLE sy-vline 
WA_REOR_RESERVATION_S_STR-VALIDFROM sy-vline 
WA_REOR_RESERVATION_S_STR-VALIDTO sy-vline 
WA_REOR_RESERVATION_S_STR-RSOBJTYPE sy-vline 
WA_REOR_RESERVATION_S_STR-RSTYPE sy-vline 
WA_REOR_RESERVATION_S_STR-RSRECGUID sy-vline 
WA_REOR_RESERVATION_S_STR-RECVALIDFROM sy-vline 
WA_REOR_RESERVATION_S_STR-RECVALIDTO sy-vline 
WA_REOR_RESERVATION_S_STR-STATEIND sy-vline 
WA_REOR_RESERVATION_S_STR-ISREVERSED sy-vline 
WA_REOR_RESERVATION_S_STR-ISOCCEXT sy-vline 
WA_REOR_RESERVATION_S_STR-SETTLETYPE sy-vline 
WA_REOR_RESERVATION_S_STR-OBJNRCN sy-vline 
WA_REOR_RESERVATION_S_STR-XRS sy-vline 
WA_REOR_RESERVATION_S_STR-EXTINVREC sy-vline 
WA_REOR_RESERVATION_S_STR-RSRESPONSIBLE sy-vline 
WA_REOR_RESERVATION_S_STR-RSRESPROLE sy-vline 
WA_REOR_RESERVATION_S_STR-NUMPARTICIPANTS sy-vline 
WA_REOR_RESERVATION_S_STR-PARTICIPLISTGUID sy-vline 
WA_REOR_RESERVATION_S_STR-RERF sy-vline 
WA_REOR_RESERVATION_S_STR-DERF sy-vline 
WA_REOR_RESERVATION_S_STR-TERF sy-vline 
WA_REOR_RESERVATION_S_STR-REHER sy-vline 
WA_REOR_RESERVATION_S_STR-RBEAR sy-vline 
WA_REOR_RESERVATION_S_STR-DBEAR sy-vline 
WA_REOR_RESERVATION_S_STR-TBEAR sy-vline 
WA_REOR_RESERVATION_S_STR-RBHER sy-vline 
WA_REOR_RESERVATION_S_STR-TZONE sy-vline 
WA_REOR_RESERVATION_S_STR-FDELETE sy-vline 
WA_REOR_RESERVATION_S_STR-RESPONSIBLEUSER sy-vline 
WA_REOR_RESERVATION_S_STR-OCCUPANTUSER sy-vline 
WA_REOR_RESERVATION_S_STR-EXTINVRECROLE sy-vline 
WA_REOR_RESERVATION_S_STR-INVRECADDRTYPE sy-vline 
WA_REOR_RESERVATION_S_STR-DATEFROM sy-vline 
WA_REOR_RESERVATION_S_STR-DATETO sy-vline 
WA_REOR_RESERVATION_S_STR-TIMEFROM sy-vline 
WA_REOR_RESERVATION_S_STR-TIMETO sy-vline 
WA_REOR_RESERVATION_S_STR-OOIDEXT sy-vline 
WA_REOR_RESERVATION_S_STR-XOO sy-vline 
WA_REOR_RESERVATION_S_STR-XRSRESPONSIBLE sy-vline 
WA_REOR_RESERVATION_S_STR-XOCCUPANT sy-vline 
WA_REOR_RESERVATION_S_STR-XWEEKDAY sy-vline 
WA_REOR_RESERVATION_S_STR-XWEEKDAYTO sy-vline 
WA_REOR_RESERVATION_S_STR-XRSOBJTYPE sy-vline 
WA_REOR_RESERVATION_S_STR-XRSTYPE sy-vline 
WA_REOR_RESERVATION_S_STR-XSETTLETYPE sy-vline 
WA_REOR_RESERVATION_S_STR-IDENTKEYCN sy-vline 
WA_REOR_RESERVATION_S_STR-XPARTNER sy-vline 
WA_REOR_RESERVATION_S_STR-PARTNER sy-vline 
WA_REOR_RESERVATION_S_STR-PARTNERROLE sy-vline 
WA_REOR_RESERVATION_S_STR-ISRESPONSIBLEUSER sy-vline 
WA_REOR_RESERVATION_S_STR-ISOCCUPANTUSER sy-vline 
WA_REOR_RESERVATION_S_STR-OCCINDIVIDUAL sy-vline 
WA_REOR_RESERVATION_S_STR-RESINDIVIDUAL sy-vline 
WA_REOR_RESERVATION_S_STR-XEXTINVREC sy-vline 
WA_REOR_RESERVATION_S_STR-OCCIDENT sy-vline 
WA_REOR_RESERVATION_S_STR-TOTAL sy-vline 
WA_REOR_RESERVATION_S_STR-CURRKEY sy-vline 
WA_REOR_RESERVATION_S_STR-PRICECODE sy-vline 
WA_REOR_RESERVATION_S_STR-COOBJTYPE sy-vline 
WA_REOR_RESERVATION_S_STR-SETNAME sy-vline 
WA_REOR_RESERVATION_S_STR-NUMPARTICIPLIST sy-vline 
WA_REOR_RESERVATION_S_STR-EXISTSSERVICES sy-vline 
WA_REOR_RESERVATION_S_STR-XSTATUS sy-vline 
WA_REOR_RESERVATION_S_STR-ICONSTATUS sy-vline 
WA_REOR_RESERVATION_S_STR-RESBP sy-vline 
WA_REOR_RESERVATION_S_STR-RESUSR sy-vline 
WA_REOR_RESERVATION_S_STR-OCCBP sy-vline 
WA_REOR_RESERVATION_S_STR-OCCUSR sy-vline 
WA_REOR_RESERVATION_S_STR-RSBUKRS sy-vline 
WA_REOR_RESERVATION_S_STR-OCCINDIVIDUALWO sy-vline 
WA_REOR_RESERVATION_S_STR-RESINDIVIDUALWO sy-vline      INTO ld_text SEPARATED BY SPACE.

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