ABAP Select data from SAP table RC27E into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP RC27E 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 RC27E. 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 RC27E 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_RC27E TYPE STANDARD TABLE OF RC27E,
      WA_RC27E TYPE RC27E,
      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: <RC27E> TYPE RC27E.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_RC27E.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM RC27E
  INTO TABLE IT_RC27E.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM RC27E
*  INTO TABLE @DATA(IT_RC27E2).
*--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_RC27E INDEX 1 INTO DATA(WA_RC27E2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_RC27E ASSIGNING <RC27E>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<RC27E>-MANDT = 1.
<RC27E>-EQUNR = 1.
<RC27E>-EQKTX = 1.
<RC27E>-EQTYP = 1.
<RC27E>-TPLNR = 1.

ENDLOOP.

LOOP AT IT_RC27E INTO WA_RC27E.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_RC27E-PLTXT, sy-vline,
  WA_RC27E-TPLKZ, sy-vline,
  WA_RC27E-SUBMT, sy-vline,
  WA_RC27E-BEGRU, sy-vline,
  WA_RC27E-LVORM, sy-vline,
  WA_RC27E-ELIEF, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_RC27E 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_RC27E 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_RC27E INTO WA_RC27E.


*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 EQUNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RC27E-EQUNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RC27E-EQUNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit TPLNR, internal->external for field TPLNR
CALL FUNCTION 'CONVERSION_EXIT_TPLNR_OUTPUT'
  EXPORTING
    input =                      WA_RC27E-TPLNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RC27E-TPLNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit MATN1, internal->external for field SUBMT
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_RC27E-SUBMT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RC27E-SUBMT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field ELIEF
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RC27E-ELIEF
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RC27E-ELIEF.
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_RC27E_STR, 
MANDT TYPE STRING,
EQUNR TYPE STRING,
EQKTX TYPE STRING,
EQTYP TYPE STRING,
TPLNR TYPE STRING,
PLTXT TYPE STRING,
TPLKZ TYPE STRING,
SUBMT TYPE STRING,
BEGRU TYPE STRING,
LVORM TYPE STRING,
ELIEF TYPE STRING,
BUKRS TYPE STRING,
IWERK TYPE STRING,
SWERK TYPE STRING,
DATBI TYPE STRING,
ESTAI TYPE STRING,
ESTAE TYPE STRING,
DATAB TYPE STRING,
MAPAR TYPE STRING,
MSGRP TYPE STRING,
INGRG TYPE STRING,
STORT TYPE STRING,
BEBER TYPE STRING,
GEWRK TYPE STRING,
PPSID TYPE STRING,
WPOS_OBJNR TYPE STRING,
WPOS_WSTRA TYPE STRING,
WPOS_GEWRK TYPE STRING,
WPOS_PSTXT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_RC27E_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_RC27E_STR-MANDT sy-vline 
WA_RC27E_STR-EQUNR sy-vline 
WA_RC27E_STR-EQKTX sy-vline 
WA_RC27E_STR-EQTYP sy-vline 
WA_RC27E_STR-TPLNR sy-vline 
WA_RC27E_STR-PLTXT sy-vline 
WA_RC27E_STR-TPLKZ sy-vline 
WA_RC27E_STR-SUBMT sy-vline 
WA_RC27E_STR-BEGRU sy-vline 
WA_RC27E_STR-LVORM sy-vline 
WA_RC27E_STR-ELIEF sy-vline 
WA_RC27E_STR-BUKRS sy-vline 
WA_RC27E_STR-IWERK sy-vline 
WA_RC27E_STR-SWERK sy-vline 
WA_RC27E_STR-DATBI sy-vline 
WA_RC27E_STR-ESTAI sy-vline 
WA_RC27E_STR-ESTAE sy-vline 
WA_RC27E_STR-DATAB sy-vline 
WA_RC27E_STR-MAPAR sy-vline 
WA_RC27E_STR-MSGRP sy-vline 
WA_RC27E_STR-INGRG sy-vline 
WA_RC27E_STR-STORT sy-vline 
WA_RC27E_STR-BEBER sy-vline 
WA_RC27E_STR-GEWRK sy-vline 
WA_RC27E_STR-PPSID sy-vline 
WA_RC27E_STR-WPOS_OBJNR sy-vline 
WA_RC27E_STR-WPOS_WSTRA sy-vline 
WA_RC27E_STR-WPOS_GEWRK sy-vline 
WA_RC27E_STR-WPOS_PSTXT sy-vline      INTO ld_text SEPARATED BY SPACE.

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