ABAP Select data from SAP table /ECRS/RP_GOV_FILE_HDR_S into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP /ECRS/RP_GOV_FILE_HDR_S 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 /ECRS/RP_GOV_FILE_HDR_S. 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 /ECRS/RP_GOV_FILE_HDR_S 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_/ECRS/RP_GOV_FILE_HDR_S TYPE STANDARD TABLE OF /ECRS/RP_GOV_FILE_HDR_S,
      WA_/ECRS/RP_GOV_FILE_HDR_S TYPE /ECRS/RP_GOV_FILE_HDR_S,
      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: </ECRS/RP_GOV_FILE_HDR_S> TYPE /ECRS/RP_GOV_FILE_HDR_S.

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

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM /ECRS/RP_GOV_FILE_HDR_S
  INTO TABLE IT_/ECRS/RP_GOV_FILE_HDR_S.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM /ECRS/RP_GOV_FILE_HDR_S
*  INTO TABLE @DATA(IT_/ECRS/RP_GOV_FILE_HDR_S2).
*--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_/ECRS/RP_GOV_FILE_HDR_S INDEX 1 INTO DATA(WA_/ECRS/RP_GOV_FILE_HDR_S2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_/ECRS/RP_GOV_FILE_HDR_S ASSIGNING </ECRS/RP_GOV_FILE_HDR_S>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
</ECRS/RP_GOV_FILE_HDR_S>-RPNUM = 1.
</ECRS/RP_GOV_FILE_HDR_S>-POIVA = 1.
</ECRS/RP_GOV_FILE_HDR_S>-POIAD = 1.
</ECRS/RP_GOV_FILE_HDR_S>-RPCTY = 1.
</ECRS/RP_GOV_FILE_HDR_S>-RPLEV = 1.

ENDLOOP.

LOOP AT IT_/ECRS/RP_GOV_FILE_HDR_S INTO WA_/ECRS/RP_GOV_FILE_HDR_S.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_/ECRS/RP_GOV_FILE_HDR_S-RPYEA, sy-vline,
  WA_/ECRS/RP_GOV_FILE_HDR_S-RPMON, sy-vline,
  WA_/ECRS/RP_GOV_FILE_HDR_S-DIREC, sy-vline,
  WA_/ECRS/RP_GOV_FILE_HDR_S-COLCE, sy-vline,
  WA_/ECRS/RP_GOV_FILE_HDR_S-FDTOF, sy-vline,
  WA_/ECRS/RP_GOV_FILE_HDR_S-STENR, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_/ECRS/RP_GOV_FILE_HDR_S 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_/ECRS/RP_GOV_FILE_HDR_S 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_/ECRS/RP_GOV_FILE_HDR_S INTO WA_/ECRS/RP_GOV_FILE_HDR_S.


*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 RPMON
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_/ECRS/RP_GOV_FILE_HDR_S-RPMON
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/ECRS/RP_GOV_FILE_HDR_S-RPMON.
WRITE:/ 'New Value:', ld_input.

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

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

*Conversion exit ALPHA, internal->external for field TPDNO
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_/ECRS/RP_GOV_FILE_HDR_S-TPDNO
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/ECRS/RP_GOV_FILE_HDR_S-TPDNO.
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_/ECRS/RP_GOV_FILE_HDR_S_STR, 
RPNUM TYPE STRING,
POIVA TYPE STRING,
POIAD TYPE STRING,
RPCTY TYPE STRING,
RPLEV TYPE STRING,
RPYEA TYPE STRING,
RPMON TYPE STRING,
DIREC TYPE STRING,
COLCE TYPE STRING,
FDTOF TYPE STRING,
STENR TYPE STRING,
MTNUM TYPE STRING,
MTNU2 TYPE STRING,
AUTNR TYPE STRING,
AUTCO TYPE STRING,
REGNR TYPE STRING,
REGON TYPE STRING,
IAGID TYPE STRING,
POICP TYPE STRING,
POISG TYPE STRING,
TPDNO TYPE STRING,
POINA TYPE STRING,
POISN TYPE STRING,
POIPC TYPE STRING,
POICI TYPE STRING,
POIPN TYPE STRING,
POIFN TYPE STRING,
POICN TYPE STRING,
CPNAM TYPE STRING,
CP_NAMLAST TYPE STRING,
CP_NAMFIRST TYPE STRING,
CPSTN TYPE STRING,
CPPOC TYPE STRING,
CPCIT TYPE STRING,
CPPHO TYPE STRING,
CPMPN TYPE STRING,
CPFAX TYPE STRING,
CPEML TYPE STRING,
TPDVA TYPE STRING,
TPDNA TYPE STRING,
SGNAM TYPE STRING,
SGPHO TYPE STRING,
SGEML TYPE STRING,
FSTRP TYPE STRING,
FNLRP TYPE STRING,
VRNUM TYPE STRING,
FREVD TYPE STRING,
RCOLC TYPE STRING,
INSUO TYPE STRING,
INSUR TYPE STRING,
STSUO TYPE STRING,
STSUR TYPE STRING,
RPCIS TYPE STRING,
NTSUO TYPE STRING,
NTSUR TYPE STRING,
SPSUO TYPE STRING,
SPSUR TYPE STRING,
ITSUM TYPE STRING,
IOSUM TYPE STRING,
HDDAT TYPE STRING,
PNDAY TYPE STRING,
GFSQN TYPE STRING,
CPJTL TYPE STRING,
SGJTL TYPE STRING,END OF T_EKKO_STR.
DATA: WA_/ECRS/RP_GOV_FILE_HDR_S_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_/ECRS/RP_GOV_FILE_HDR_S_STR-RPNUM sy-vline 
WA_/ECRS/RP_GOV_FILE_HDR_S_STR-POIVA sy-vline 
WA_/ECRS/RP_GOV_FILE_HDR_S_STR-POIAD sy-vline 
WA_/ECRS/RP_GOV_FILE_HDR_S_STR-RPCTY sy-vline 
WA_/ECRS/RP_GOV_FILE_HDR_S_STR-RPLEV sy-vline 
WA_/ECRS/RP_GOV_FILE_HDR_S_STR-RPYEA sy-vline 
WA_/ECRS/RP_GOV_FILE_HDR_S_STR-RPMON sy-vline 
WA_/ECRS/RP_GOV_FILE_HDR_S_STR-DIREC sy-vline 
WA_/ECRS/RP_GOV_FILE_HDR_S_STR-COLCE sy-vline 
WA_/ECRS/RP_GOV_FILE_HDR_S_STR-FDTOF sy-vline 
WA_/ECRS/RP_GOV_FILE_HDR_S_STR-STENR sy-vline 
WA_/ECRS/RP_GOV_FILE_HDR_S_STR-MTNUM sy-vline 
WA_/ECRS/RP_GOV_FILE_HDR_S_STR-MTNU2 sy-vline 
WA_/ECRS/RP_GOV_FILE_HDR_S_STR-AUTNR sy-vline 
WA_/ECRS/RP_GOV_FILE_HDR_S_STR-AUTCO sy-vline 
WA_/ECRS/RP_GOV_FILE_HDR_S_STR-REGNR sy-vline 
WA_/ECRS/RP_GOV_FILE_HDR_S_STR-REGON sy-vline 
WA_/ECRS/RP_GOV_FILE_HDR_S_STR-IAGID sy-vline 
WA_/ECRS/RP_GOV_FILE_HDR_S_STR-POICP sy-vline 
WA_/ECRS/RP_GOV_FILE_HDR_S_STR-POISG sy-vline 
WA_/ECRS/RP_GOV_FILE_HDR_S_STR-TPDNO sy-vline 
WA_/ECRS/RP_GOV_FILE_HDR_S_STR-POINA sy-vline 
WA_/ECRS/RP_GOV_FILE_HDR_S_STR-POISN sy-vline 
WA_/ECRS/RP_GOV_FILE_HDR_S_STR-POIPC sy-vline 
WA_/ECRS/RP_GOV_FILE_HDR_S_STR-POICI sy-vline 
WA_/ECRS/RP_GOV_FILE_HDR_S_STR-POIPN sy-vline 
WA_/ECRS/RP_GOV_FILE_HDR_S_STR-POIFN sy-vline 
WA_/ECRS/RP_GOV_FILE_HDR_S_STR-POICN sy-vline 
WA_/ECRS/RP_GOV_FILE_HDR_S_STR-CPNAM sy-vline 
WA_/ECRS/RP_GOV_FILE_HDR_S_STR-CP_NAMLAST sy-vline 
WA_/ECRS/RP_GOV_FILE_HDR_S_STR-CP_NAMFIRST sy-vline 
WA_/ECRS/RP_GOV_FILE_HDR_S_STR-CPSTN sy-vline 
WA_/ECRS/RP_GOV_FILE_HDR_S_STR-CPPOC sy-vline 
WA_/ECRS/RP_GOV_FILE_HDR_S_STR-CPCIT sy-vline 
WA_/ECRS/RP_GOV_FILE_HDR_S_STR-CPPHO sy-vline 
WA_/ECRS/RP_GOV_FILE_HDR_S_STR-CPMPN sy-vline 
WA_/ECRS/RP_GOV_FILE_HDR_S_STR-CPFAX sy-vline 
WA_/ECRS/RP_GOV_FILE_HDR_S_STR-CPEML sy-vline 
WA_/ECRS/RP_GOV_FILE_HDR_S_STR-TPDVA sy-vline 
WA_/ECRS/RP_GOV_FILE_HDR_S_STR-TPDNA sy-vline 
WA_/ECRS/RP_GOV_FILE_HDR_S_STR-SGNAM sy-vline 
WA_/ECRS/RP_GOV_FILE_HDR_S_STR-SGPHO sy-vline 
WA_/ECRS/RP_GOV_FILE_HDR_S_STR-SGEML sy-vline 
WA_/ECRS/RP_GOV_FILE_HDR_S_STR-FSTRP sy-vline 
WA_/ECRS/RP_GOV_FILE_HDR_S_STR-FNLRP sy-vline 
WA_/ECRS/RP_GOV_FILE_HDR_S_STR-VRNUM sy-vline 
WA_/ECRS/RP_GOV_FILE_HDR_S_STR-FREVD sy-vline 
WA_/ECRS/RP_GOV_FILE_HDR_S_STR-RCOLC sy-vline 
WA_/ECRS/RP_GOV_FILE_HDR_S_STR-INSUO sy-vline 
WA_/ECRS/RP_GOV_FILE_HDR_S_STR-INSUR sy-vline 
WA_/ECRS/RP_GOV_FILE_HDR_S_STR-STSUO sy-vline 
WA_/ECRS/RP_GOV_FILE_HDR_S_STR-STSUR sy-vline 
WA_/ECRS/RP_GOV_FILE_HDR_S_STR-RPCIS sy-vline 
WA_/ECRS/RP_GOV_FILE_HDR_S_STR-NTSUO sy-vline 
WA_/ECRS/RP_GOV_FILE_HDR_S_STR-NTSUR sy-vline 
WA_/ECRS/RP_GOV_FILE_HDR_S_STR-SPSUO sy-vline 
WA_/ECRS/RP_GOV_FILE_HDR_S_STR-SPSUR sy-vline 
WA_/ECRS/RP_GOV_FILE_HDR_S_STR-ITSUM sy-vline 
WA_/ECRS/RP_GOV_FILE_HDR_S_STR-IOSUM sy-vline 
WA_/ECRS/RP_GOV_FILE_HDR_S_STR-HDDAT sy-vline 
WA_/ECRS/RP_GOV_FILE_HDR_S_STR-PNDAY sy-vline 
WA_/ECRS/RP_GOV_FILE_HDR_S_STR-GFSQN sy-vline 
WA_/ECRS/RP_GOV_FILE_HDR_S_STR-CPJTL sy-vline 
WA_/ECRS/RP_GOV_FILE_HDR_S_STR-SGJTL sy-vline      INTO ld_text SEPARATED BY SPACE.

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