ABAP Select data from SAP table REAJ_VIAJSPECINDX into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM REAJ_VIAJSPECINDX
*  INTO TABLE @DATA(IT_REAJ_VIAJSPECINDX2).
*--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_REAJ_VIAJSPECINDX INDEX 1 INTO DATA(WA_REAJ_VIAJSPECINDX2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<REAJ_VIAJSPECINDX>-MANDT = 1.
<REAJ_VIAJSPECINDX>-INTRENO = 1.
<REAJ_VIAJSPECINDX>-TERMNO = 1.
<REAJ_VIAJSPECINDX>-ADJMRULE = 1.
<REAJ_VIAJSPECINDX>-ADJMSUBRULE = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_REAJ_VIAJSPECINDX-VALIDFROM, sy-vline,
  WA_REAJ_VIAJSPECINDX-VALIDTO, sy-vline,
  WA_REAJ_VIAJSPECINDX-RULECHANGEABLE, sy-vline,
  WA_REAJ_VIAJSPECINDX-INDEXSERIES, sy-vline,
  WA_REAJ_VIAJSPECINDX-INDEXBASEYEAR, sy-vline,
  WA_REAJ_VIAJSPECINDX-INDEXBASEACT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_REAJ_VIAJSPECINDX 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_REAJ_VIAJSPECINDX 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_REAJ_VIAJSPECINDX INTO WA_REAJ_VIAJSPECINDX.


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

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

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

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

*Conversion exit GJAHR, internal->external for field INDEXBASEYEAR
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_REAJ_VIAJSPECINDX-INDEXBASEYEAR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_REAJ_VIAJSPECINDX-INDEXBASEYEAR.
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_REAJ_VIAJSPECINDX_STR, 
MANDT TYPE STRING,
INTRENO TYPE STRING,
TERMNO TYPE STRING,
ADJMRULE TYPE STRING,
ADJMSUBRULE TYPE STRING,
VALIDFROM TYPE STRING,
VALIDTO TYPE STRING,
RULECHANGEABLE TYPE STRING,
INDEXSERIES TYPE STRING,
INDEXBASEYEAR TYPE STRING,
INDEXBASEACT TYPE STRING,
INDEXCHGPOINTS TYPE STRING,
INDEXCHGPERCENT TYPE STRING,
INDEXCHGPOIEX TYPE STRING,
INDEXCHGPEREX TYPE STRING,
RHYTHMFLEXIBLE TYPE STRING,
DELAYBASE TYPE STRING,
DELAYBASEUNIT TYPE STRING,
ADJMINDEXBASIS TYPE STRING,
INDEXSERTYPE1 TYPE STRING,
INDEXSERTYPE2 TYPE STRING,
FINDEXSERIES TYPE STRING,
FINDEXBASEYEAR TYPE STRING,
FINDEXBASEACT TYPE STRING,
FINDEXCHGPOINTS TYPE STRING,
FINDEXCHGPERCENT TYPE STRING,
FINDEXCHGPOIEX TYPE STRING,
FINDEXCHGPEREX TYPE STRING,
FRHYTHMFLEXIBLE TYPE STRING,
FDELAYBASE TYPE STRING,
FDELAYBASEUNIT TYPE STRING,
FADJMINDEXBASIS TYPE STRING,
FINDEXSERTYPE1 TYPE STRING,
FINDEXSERTYPE2 TYPE STRING,
RULEEXPAND TYPE STRING,
SPECIFICFIELD TYPE STRING,END OF T_EKKO_STR.
DATA: WA_REAJ_VIAJSPECINDX_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_REAJ_VIAJSPECINDX_STR-MANDT sy-vline 
WA_REAJ_VIAJSPECINDX_STR-INTRENO sy-vline 
WA_REAJ_VIAJSPECINDX_STR-TERMNO sy-vline 
WA_REAJ_VIAJSPECINDX_STR-ADJMRULE sy-vline 
WA_REAJ_VIAJSPECINDX_STR-ADJMSUBRULE sy-vline 
WA_REAJ_VIAJSPECINDX_STR-VALIDFROM sy-vline 
WA_REAJ_VIAJSPECINDX_STR-VALIDTO sy-vline 
WA_REAJ_VIAJSPECINDX_STR-RULECHANGEABLE sy-vline 
WA_REAJ_VIAJSPECINDX_STR-INDEXSERIES sy-vline 
WA_REAJ_VIAJSPECINDX_STR-INDEXBASEYEAR sy-vline 
WA_REAJ_VIAJSPECINDX_STR-INDEXBASEACT sy-vline 
WA_REAJ_VIAJSPECINDX_STR-INDEXCHGPOINTS sy-vline 
WA_REAJ_VIAJSPECINDX_STR-INDEXCHGPERCENT sy-vline 
WA_REAJ_VIAJSPECINDX_STR-INDEXCHGPOIEX sy-vline 
WA_REAJ_VIAJSPECINDX_STR-INDEXCHGPEREX sy-vline 
WA_REAJ_VIAJSPECINDX_STR-RHYTHMFLEXIBLE sy-vline 
WA_REAJ_VIAJSPECINDX_STR-DELAYBASE sy-vline 
WA_REAJ_VIAJSPECINDX_STR-DELAYBASEUNIT sy-vline 
WA_REAJ_VIAJSPECINDX_STR-ADJMINDEXBASIS sy-vline 
WA_REAJ_VIAJSPECINDX_STR-INDEXSERTYPE1 sy-vline 
WA_REAJ_VIAJSPECINDX_STR-INDEXSERTYPE2 sy-vline 
WA_REAJ_VIAJSPECINDX_STR-FINDEXSERIES sy-vline 
WA_REAJ_VIAJSPECINDX_STR-FINDEXBASEYEAR sy-vline 
WA_REAJ_VIAJSPECINDX_STR-FINDEXBASEACT sy-vline 
WA_REAJ_VIAJSPECINDX_STR-FINDEXCHGPOINTS sy-vline 
WA_REAJ_VIAJSPECINDX_STR-FINDEXCHGPERCENT sy-vline 
WA_REAJ_VIAJSPECINDX_STR-FINDEXCHGPOIEX sy-vline 
WA_REAJ_VIAJSPECINDX_STR-FINDEXCHGPEREX sy-vline 
WA_REAJ_VIAJSPECINDX_STR-FRHYTHMFLEXIBLE sy-vline 
WA_REAJ_VIAJSPECINDX_STR-FDELAYBASE sy-vline 
WA_REAJ_VIAJSPECINDX_STR-FDELAYBASEUNIT sy-vline 
WA_REAJ_VIAJSPECINDX_STR-FADJMINDEXBASIS sy-vline 
WA_REAJ_VIAJSPECINDX_STR-FINDEXSERTYPE1 sy-vline 
WA_REAJ_VIAJSPECINDX_STR-FINDEXSERTYPE2 sy-vline 
WA_REAJ_VIAJSPECINDX_STR-RULEEXPAND sy-vline 
WA_REAJ_VIAJSPECINDX_STR-SPECIFICFIELD sy-vline      INTO ld_text SEPARATED BY SPACE.

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