ABAP Select data from SAP table REXCSCCH_TAPE_FILEB into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM REXCSCCH_TAPE_FILEB
*  INTO TABLE @DATA(IT_REXCSCCH_TAPE_FILEB2).
*--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_REXCSCCH_TAPE_FILEB INDEX 1 INTO DATA(WA_REXCSCCH_TAPE_FILEB2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<REXCSCCH_TAPE_FILEB>-SWENR = 1.
<REXCSCCH_TAPE_FILEB>-SMENR = 1.
<REXCSCCH_TAPE_FILEB>-ROTYPE = 1.
<REXCSCCH_TAPE_FILEB>-XMETXT = 1.
<REXCSCCH_TAPE_FILEB>-STREET = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_REXCSCCH_TAPE_FILEB-HOUSE_NUM1, sy-vline,
  WA_REXCSCCH_TAPE_FILEB-POST_CODE1, sy-vline,
  WA_REXCSCCH_TAPE_FILEB-CITY1, sy-vline,
  WA_REXCSCCH_TAPE_FILEB-REGION, sy-vline,
  WA_REXCSCCH_TAPE_FILEB-COUNTRY, sy-vline,
  WA_REXCSCCH_TAPE_FILEB-MEASVALUE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_REXCSCCH_TAPE_FILEB 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_REXCSCCH_TAPE_FILEB 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_REXCSCCH_TAPE_FILEB INTO WA_REXCSCCH_TAPE_FILEB.


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

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

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

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

*Conversion exit ALPHA, internal->external for field MPNUMBER
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_REXCSCCH_TAPE_FILEB-MPNUMBER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_REXCSCCH_TAPE_FILEB-MPNUMBER.
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_REXCSCCH_TAPE_FILEB_STR, 
SWENR TYPE STRING,
SMENR TYPE STRING,
ROTYPE TYPE STRING,
XMETXT TYPE STRING,
STREET TYPE STRING,
HOUSE_NUM1 TYPE STRING,
POST_CODE1 TYPE STRING,
CITY1 TYPE STRING,
REGION TYPE STRING,
COUNTRY TYPE STRING,
MEASVALUE TYPE STRING,
MEASUNIT TYPE STRING,
PFROM TYPE STRING,
PTO TYPE STRING,
CNPARTNER TYPE STRING,
MPNUMBER TYPE STRING,
MPTYPE TYPE STRING,
EXTIDENT TYPE STRING,
MPDIFFQ TYPE STRING,
READDATE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_REXCSCCH_TAPE_FILEB_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_REXCSCCH_TAPE_FILEB_STR-SWENR sy-vline 
WA_REXCSCCH_TAPE_FILEB_STR-SMENR sy-vline 
WA_REXCSCCH_TAPE_FILEB_STR-ROTYPE sy-vline 
WA_REXCSCCH_TAPE_FILEB_STR-XMETXT sy-vline 
WA_REXCSCCH_TAPE_FILEB_STR-STREET sy-vline 
WA_REXCSCCH_TAPE_FILEB_STR-HOUSE_NUM1 sy-vline 
WA_REXCSCCH_TAPE_FILEB_STR-POST_CODE1 sy-vline 
WA_REXCSCCH_TAPE_FILEB_STR-CITY1 sy-vline 
WA_REXCSCCH_TAPE_FILEB_STR-REGION sy-vline 
WA_REXCSCCH_TAPE_FILEB_STR-COUNTRY sy-vline 
WA_REXCSCCH_TAPE_FILEB_STR-MEASVALUE sy-vline 
WA_REXCSCCH_TAPE_FILEB_STR-MEASUNIT sy-vline 
WA_REXCSCCH_TAPE_FILEB_STR-PFROM sy-vline 
WA_REXCSCCH_TAPE_FILEB_STR-PTO sy-vline 
WA_REXCSCCH_TAPE_FILEB_STR-CNPARTNER sy-vline 
WA_REXCSCCH_TAPE_FILEB_STR-MPNUMBER sy-vline 
WA_REXCSCCH_TAPE_FILEB_STR-MPTYPE sy-vline 
WA_REXCSCCH_TAPE_FILEB_STR-EXTIDENT sy-vline 
WA_REXCSCCH_TAPE_FILEB_STR-MPDIFFQ sy-vline 
WA_REXCSCCH_TAPE_FILEB_STR-READDATE sy-vline      INTO ld_text SEPARATED BY SPACE.

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