ABAP Select data from SAP table RCPS_SRC_PARA_HEADER into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM RCPS_SRC_PARA_HEADER
*  INTO TABLE @DATA(IT_RCPS_SRC_PARA_HEADER2).
*--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_RCPS_SRC_PARA_HEADER INDEX 1 INTO DATA(WA_RCPS_SRC_PARA_HEADER2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<RCPS_SRC_PARA_HEADER>-PNAME = 1.
<RCPS_SRC_PARA_HEADER>-PNTYPE = 1.
<RCPS_SRC_PARA_HEADER>-SUBCAT = 1.
<RCPS_SRC_PARA_HEADER>-LOTMIN = 1.
<RCPS_SRC_PARA_HEADER>-LOTMAX = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_RCPS_SRC_PARA_HEADER-LOTUNIT, sy-vline,
  WA_RCPS_SRC_PARA_HEADER-OTYPE_ORGID, sy-vline,
  WA_RCPS_SRC_PARA_HEADER-REALO, sy-vline,
  WA_RCPS_SRC_PARA_HEADER-TXT_REALO, sy-vline,
  WA_RCPS_SRC_PARA_HEADER-AENNR, sy-vline,
  WA_RCPS_SRC_PARA_HEADER-ISTATUS, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_RCPS_SRC_PARA_HEADER 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_RCPS_SRC_PARA_HEADER 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_RCPS_SRC_PARA_HEADER INTO WA_RCPS_SRC_PARA_HEADER.


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

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

*Conversion exit ABPSP, internal->external for field PROJECT
CALL FUNCTION 'CONVERSION_EXIT_ABPSP_OUTPUT'
  EXPORTING
    input =                      WA_RCPS_SRC_PARA_HEADER-PROJECT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RCPS_SRC_PARA_HEADER-PROJECT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ISOLA, internal->external for field PVTEXT_SPRAS
CALL FUNCTION 'CONVERSION_EXIT_ISOLA_OUTPUT'
  EXPORTING
    input =                      WA_RCPS_SRC_PARA_HEADER-PVTEXT_SPRAS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RCPS_SRC_PARA_HEADER-PVTEXT_SPRAS.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ISOLA, internal->external for field NAMLANGU
CALL FUNCTION 'CONVERSION_EXIT_ISOLA_OUTPUT'
  EXPORTING
    input =                      WA_RCPS_SRC_PARA_HEADER-NAMLANGU
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RCPS_SRC_PARA_HEADER-NAMLANGU.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ISOLA, internal->external for field NUMLANGU
CALL FUNCTION 'CONVERSION_EXIT_ISOLA_OUTPUT'
  EXPORTING
    input =                      WA_RCPS_SRC_PARA_HEADER-NUMLANGU
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RCPS_SRC_PARA_HEADER-NUMLANGU.
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_RCPS_SRC_PARA_HEADER_STR, 
PNAME TYPE STRING,
PNTYPE TYPE STRING,
SUBCAT TYPE STRING,
LOTMIN TYPE STRING,
LOTMAX TYPE STRING,
LOTUNIT TYPE STRING,
OTYPE_ORGID TYPE STRING,
REALO TYPE STRING,
TXT_REALO TYPE STRING,
AENNR TYPE STRING,
ISTATUS TYPE STRING,
REFQUANT TYPE STRING,
PROJECT TYPE STRING,
CREADAT TYPE STRING,
CREABY TYPE STRING,
CHNGDAT TYPE STRING,
CHNGBY TYPE STRING,
PVTEXT TYPE STRING,
PVTEXT_SPRAS TYPE STRING,
CREADAT_TO TYPE STRING,
CHNGDAT_TO TYPE STRING,
PREF_RCP_FLG TYPE STRING,
TXT_PROJECT TYPE STRING,
TXT_STATUS TYPE STRING,
TXT_CREABY TYPE STRING,
TXT_CHNGBY TYPE STRING,
NAMCAT TYPE STRING,
NAMLANGU TYPE STRING,
INAME TYPE STRING,
NUMCAT TYPE STRING,
NUMLANGU TYPE STRING,
INUMBER TYPE STRING,
COPY_FROM TYPE STRING,
PNAME_COPFR TYPE STRING,
TXT_COPFR TYPE STRING,END OF T_EKKO_STR.
DATA: WA_RCPS_SRC_PARA_HEADER_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_RCPS_SRC_PARA_HEADER_STR-PNAME sy-vline 
WA_RCPS_SRC_PARA_HEADER_STR-PNTYPE sy-vline 
WA_RCPS_SRC_PARA_HEADER_STR-SUBCAT sy-vline 
WA_RCPS_SRC_PARA_HEADER_STR-LOTMIN sy-vline 
WA_RCPS_SRC_PARA_HEADER_STR-LOTMAX sy-vline 
WA_RCPS_SRC_PARA_HEADER_STR-LOTUNIT sy-vline 
WA_RCPS_SRC_PARA_HEADER_STR-OTYPE_ORGID sy-vline 
WA_RCPS_SRC_PARA_HEADER_STR-REALO sy-vline 
WA_RCPS_SRC_PARA_HEADER_STR-TXT_REALO sy-vline 
WA_RCPS_SRC_PARA_HEADER_STR-AENNR sy-vline 
WA_RCPS_SRC_PARA_HEADER_STR-ISTATUS sy-vline 
WA_RCPS_SRC_PARA_HEADER_STR-REFQUANT sy-vline 
WA_RCPS_SRC_PARA_HEADER_STR-PROJECT sy-vline 
WA_RCPS_SRC_PARA_HEADER_STR-CREADAT sy-vline 
WA_RCPS_SRC_PARA_HEADER_STR-CREABY sy-vline 
WA_RCPS_SRC_PARA_HEADER_STR-CHNGDAT sy-vline 
WA_RCPS_SRC_PARA_HEADER_STR-CHNGBY sy-vline 
WA_RCPS_SRC_PARA_HEADER_STR-PVTEXT sy-vline 
WA_RCPS_SRC_PARA_HEADER_STR-PVTEXT_SPRAS sy-vline 
WA_RCPS_SRC_PARA_HEADER_STR-CREADAT_TO sy-vline 
WA_RCPS_SRC_PARA_HEADER_STR-CHNGDAT_TO sy-vline 
WA_RCPS_SRC_PARA_HEADER_STR-PREF_RCP_FLG sy-vline 
WA_RCPS_SRC_PARA_HEADER_STR-TXT_PROJECT sy-vline 
WA_RCPS_SRC_PARA_HEADER_STR-TXT_STATUS sy-vline 
WA_RCPS_SRC_PARA_HEADER_STR-TXT_CREABY sy-vline 
WA_RCPS_SRC_PARA_HEADER_STR-TXT_CHNGBY sy-vline 
WA_RCPS_SRC_PARA_HEADER_STR-NAMCAT sy-vline 
WA_RCPS_SRC_PARA_HEADER_STR-NAMLANGU sy-vline 
WA_RCPS_SRC_PARA_HEADER_STR-INAME sy-vline 
WA_RCPS_SRC_PARA_HEADER_STR-NUMCAT sy-vline 
WA_RCPS_SRC_PARA_HEADER_STR-NUMLANGU sy-vline 
WA_RCPS_SRC_PARA_HEADER_STR-INUMBER sy-vline 
WA_RCPS_SRC_PARA_HEADER_STR-COPY_FROM sy-vline 
WA_RCPS_SRC_PARA_HEADER_STR-PNAME_COPFR sy-vline 
WA_RCPS_SRC_PARA_HEADER_STR-TXT_COPFR sy-vline      INTO ld_text SEPARATED BY SPACE.

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