ABAP Select data from SAP table REIS_IT_OR_L into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP REIS_IT_OR_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 REIS_IT_OR_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 REIS_IT_OR_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_REIS_IT_OR_L TYPE STANDARD TABLE OF REIS_IT_OR_L,
      WA_REIS_IT_OR_L TYPE REIS_IT_OR_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: <REIS_IT_OR_L> TYPE REIS_IT_OR_L.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM REIS_IT_OR_L
*  INTO TABLE @DATA(IT_REIS_IT_OR_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_REIS_IT_OR_L INDEX 1 INTO DATA(WA_REIS_IT_OR_L2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<REIS_IT_OR_L>-MANDT = 1.
<REIS_IT_OR_L>-OBJNR = 1.
<REIS_IT_OR_L>-OBJNRDETAIL = 1.
<REIS_IT_OR_L>-ANCHPER = 1.
<REIS_IT_OR_L>-VERSION = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_REIS_IT_OR_L-VALIDFROM, sy-vline,
  WA_REIS_IT_OR_L-VALIDTO, sy-vline,
  WA_REIS_IT_OR_L-OPTRATE, sy-vline,
  WA_REIS_IT_OR_L-OPTMETH, sy-vline,
  WA_REIS_IT_OR_L-LASTUSED, sy-vline,
  WA_REIS_IT_OR_L-JKONTKZ, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_REIS_IT_OR_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_REIS_IT_OR_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_REIS_IT_OR_L INTO WA_REIS_IT_OR_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 REDAT, internal->external for field VALIDTO
CALL FUNCTION 'CONVERSION_EXIT_REDAT_OUTPUT'
  EXPORTING
    input =                      WA_REIS_IT_OR_L-VALIDTO
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_REIS_IT_OR_L-VALIDTO.
WRITE:/ 'New Value:', ld_input.

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

*Conversion exit SWENR, internal->external for field SWENR
CALL FUNCTION 'CONVERSION_EXIT_SWENR_OUTPUT'
  EXPORTING
    input =                      WA_REIS_IT_OR_L-SWENR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_REIS_IT_OR_L-SWENR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit SGENR, internal->external for field SGENR
CALL FUNCTION 'CONVERSION_EXIT_SGENR_OUTPUT'
  EXPORTING
    input =                      WA_REIS_IT_OR_L-SGENR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_REIS_IT_OR_L-SGENR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit SGRNR, internal->external for field SGRNR
CALL FUNCTION 'CONVERSION_EXIT_SGRNR_OUTPUT'
  EXPORTING
    input =                      WA_REIS_IT_OR_L-SGRNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_REIS_IT_OR_L-SGRNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit SMENR, internal->external for field NORUPS
CALL FUNCTION 'CONVERSION_EXIT_SMENR_OUTPUT'
  EXPORTING
    input =                      WA_REIS_IT_OR_L-NORUPS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_REIS_IT_OR_L-NORUPS.
WRITE:/ 'New Value:', ld_input.

*Conversion exit SMENR, internal->external for field NORS
CALL FUNCTION 'CONVERSION_EXIT_SMENR_OUTPUT'
  EXPORTING
    input =                      WA_REIS_IT_OR_L-NORS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_REIS_IT_OR_L-NORS.
WRITE:/ 'New Value:', ld_input.

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

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

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

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

*Conversion exit ALPHA, internal->external for field TCNO
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_REIS_IT_OR_L-TCNO
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_REIS_IT_OR_L-TCNO.
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_REIS_IT_OR_L_STR, 
MANDT TYPE STRING,
OBJNR TYPE STRING,
OBJNRDETAIL TYPE STRING,
ANCHPER TYPE STRING,
VERSION TYPE STRING,
VALIDFROM TYPE STRING,
VALIDTO TYPE STRING,
OPTRATE TYPE STRING,
OPTMETH TYPE STRING,
LASTUSED TYPE STRING,
JKONTKZ TYPE STRING,
ISLEGACYDATA TYPE STRING,
BUKRS TYPE STRING,
SWENR TYPE STRING,
SGENR TYPE STRING,
SGRNR TYPE STRING,
NORUPS TYPE STRING,
NORS TYPE STRING,
RECNNR TYPE STRING,
OBJECTID TYPE STRING,
OBJECTTEXT TYPE STRING,
OBJECTICON TYPE STRING,
OBJECT_VALIDFROM TYPE STRING,
OBJECT_VALIDTO TYPE STRING,
OBJECT_POSSDATEFROM TYPE STRING,
OBJECT_POSSDATETO TYPE STRING,
SCKEY TYPE STRING,
SUID TYPE STRING,
TCNO TYPE STRING,
XOPTMETH TYPE STRING,
ISFREE TYPE STRING,
ISAUTOMATIC TYPE STRING,
OPTRATEDELTA TYPE STRING,
ICON_STATUS TYPE STRING,
ICON_DETAIL TYPE STRING,
OBJTYPE TYPE STRING,
INTRENO TYPE STRING,
ALVROWS TYPE STRING,
RECISVALIDFROM TYPE STRING,
RECISVALIDTO TYPE STRING,
COLORTAB TYPE STRING,
CELLTAB TYPE STRING,END OF T_EKKO_STR.
DATA: WA_REIS_IT_OR_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_REIS_IT_OR_L_STR-MANDT sy-vline 
WA_REIS_IT_OR_L_STR-OBJNR sy-vline 
WA_REIS_IT_OR_L_STR-OBJNRDETAIL sy-vline 
WA_REIS_IT_OR_L_STR-ANCHPER sy-vline 
WA_REIS_IT_OR_L_STR-VERSION sy-vline 
WA_REIS_IT_OR_L_STR-VALIDFROM sy-vline 
WA_REIS_IT_OR_L_STR-VALIDTO sy-vline 
WA_REIS_IT_OR_L_STR-OPTRATE sy-vline 
WA_REIS_IT_OR_L_STR-OPTMETH sy-vline 
WA_REIS_IT_OR_L_STR-LASTUSED sy-vline 
WA_REIS_IT_OR_L_STR-JKONTKZ sy-vline 
WA_REIS_IT_OR_L_STR-ISLEGACYDATA sy-vline 
WA_REIS_IT_OR_L_STR-BUKRS sy-vline 
WA_REIS_IT_OR_L_STR-SWENR sy-vline 
WA_REIS_IT_OR_L_STR-SGENR sy-vline 
WA_REIS_IT_OR_L_STR-SGRNR sy-vline 
WA_REIS_IT_OR_L_STR-NORUPS sy-vline 
WA_REIS_IT_OR_L_STR-NORS sy-vline 
WA_REIS_IT_OR_L_STR-RECNNR sy-vline 
WA_REIS_IT_OR_L_STR-OBJECTID sy-vline 
WA_REIS_IT_OR_L_STR-OBJECTTEXT sy-vline 
WA_REIS_IT_OR_L_STR-OBJECTICON sy-vline 
WA_REIS_IT_OR_L_STR-OBJECT_VALIDFROM sy-vline 
WA_REIS_IT_OR_L_STR-OBJECT_VALIDTO sy-vline 
WA_REIS_IT_OR_L_STR-OBJECT_POSSDATEFROM sy-vline 
WA_REIS_IT_OR_L_STR-OBJECT_POSSDATETO sy-vline 
WA_REIS_IT_OR_L_STR-SCKEY sy-vline 
WA_REIS_IT_OR_L_STR-SUID sy-vline 
WA_REIS_IT_OR_L_STR-TCNO sy-vline 
WA_REIS_IT_OR_L_STR-XOPTMETH sy-vline 
WA_REIS_IT_OR_L_STR-ISFREE sy-vline 
WA_REIS_IT_OR_L_STR-ISAUTOMATIC sy-vline 
WA_REIS_IT_OR_L_STR-OPTRATEDELTA sy-vline 
WA_REIS_IT_OR_L_STR-ICON_STATUS sy-vline 
WA_REIS_IT_OR_L_STR-ICON_DETAIL sy-vline 
WA_REIS_IT_OR_L_STR-OBJTYPE sy-vline 
WA_REIS_IT_OR_L_STR-INTRENO sy-vline 
WA_REIS_IT_OR_L_STR-ALVROWS sy-vline 
WA_REIS_IT_OR_L_STR-RECISVALIDFROM sy-vline 
WA_REIS_IT_OR_L_STR-RECISVALIDTO sy-vline 
WA_REIS_IT_OR_L_STR-COLORTAB sy-vline 
WA_REIS_IT_OR_L_STR-CELLTAB sy-vline      INTO ld_text SEPARATED BY SPACE.

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