ABAP Select data from SAP table HRP1657 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP HRP1657 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 HRP1657. 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 HRP1657 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_HRP1657 TYPE STANDARD TABLE OF HRP1657,
      WA_HRP1657 TYPE HRP1657,
      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: <HRP1657> TYPE HRP1657.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_HRP1657.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM HRP1657
  INTO TABLE IT_HRP1657.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM HRP1657
*  INTO TABLE @DATA(IT_HRP16572).
*--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_HRP1657 INDEX 1 INTO DATA(WA_HRP16572).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_HRP1657 ASSIGNING <HRP1657>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<HRP1657>-MANDT = 1.
<HRP1657>-PLVAR = 1.
<HRP1657>-OTYPE = 1.
<HRP1657>-OBJID = 1.
<HRP1657>-SUBTY = 1.

ENDLOOP.

LOOP AT IT_HRP1657 INTO WA_HRP1657.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_HRP1657-ISTAT, sy-vline,
  WA_HRP1657-BEGDA, sy-vline,
  WA_HRP1657-ENDDA, sy-vline,
  WA_HRP1657-VARYF, sy-vline,
  WA_HRP1657-SEQNR, sy-vline,
  WA_HRP1657-INFTY, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_HRP1657 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_HRP1657 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_HRP1657 INTO WA_HRP1657.


*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 ADDR1
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_HRP1657-ADDR1
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_HRP1657-ADDR1.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field ADDR2
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_HRP1657-ADDR2
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_HRP1657-ADDR2.
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_HRP1657_STR, 
MANDT TYPE STRING,
PLVAR TYPE STRING,
OTYPE TYPE STRING,
OBJID TYPE STRING,
SUBTY TYPE STRING,
ISTAT TYPE STRING,
BEGDA TYPE STRING,
ENDDA TYPE STRING,
VARYF TYPE STRING,
SEQNR TYPE STRING,
INFTY TYPE STRING,
OTJID TYPE STRING,
AEDTM TYPE STRING,
UNAME TYPE STRING,
REASN TYPE STRING,
HISTO TYPE STRING,
ITXNR TYPE STRING,
GPVAL TYPE STRING,
HEADU TYPE STRING,
DETAU TYPE STRING,
FLIND TYPE STRING,
UPVAL TYPE STRING,
EHRAU TYPE STRING,
ORNM TYPE STRING,
BIN TYPE STRING,
TAXA1 TYPE STRING,
TAXA2 TYPE STRING,
TAXA3 TYPE STRING,
TAXA4 TYPE STRING,
OKPO TYPE STRING,
TXAU1 TYPE STRING,
TXAU2 TYPE STRING,
TAXNONRES TYPE STRING,
ADDR1 TYPE STRING,
ADDR2 TYPE STRING,
CONT01 TYPE STRING,
PERN01 TYPE STRING,
CONT02 TYPE STRING,
PERN02 TYPE STRING,END OF T_EKKO_STR.
DATA: WA_HRP1657_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_HRP1657_STR-MANDT sy-vline 
WA_HRP1657_STR-PLVAR sy-vline 
WA_HRP1657_STR-OTYPE sy-vline 
WA_HRP1657_STR-OBJID sy-vline 
WA_HRP1657_STR-SUBTY sy-vline 
WA_HRP1657_STR-ISTAT sy-vline 
WA_HRP1657_STR-BEGDA sy-vline 
WA_HRP1657_STR-ENDDA sy-vline 
WA_HRP1657_STR-VARYF sy-vline 
WA_HRP1657_STR-SEQNR sy-vline 
WA_HRP1657_STR-INFTY sy-vline 
WA_HRP1657_STR-OTJID sy-vline 
WA_HRP1657_STR-AEDTM sy-vline 
WA_HRP1657_STR-UNAME sy-vline 
WA_HRP1657_STR-REASN sy-vline 
WA_HRP1657_STR-HISTO sy-vline 
WA_HRP1657_STR-ITXNR sy-vline 
WA_HRP1657_STR-GPVAL sy-vline 
WA_HRP1657_STR-HEADU sy-vline 
WA_HRP1657_STR-DETAU sy-vline 
WA_HRP1657_STR-FLIND sy-vline 
WA_HRP1657_STR-UPVAL sy-vline 
WA_HRP1657_STR-EHRAU sy-vline 
WA_HRP1657_STR-ORNM sy-vline 
WA_HRP1657_STR-BIN sy-vline 
WA_HRP1657_STR-TAXA1 sy-vline 
WA_HRP1657_STR-TAXA2 sy-vline 
WA_HRP1657_STR-TAXA3 sy-vline 
WA_HRP1657_STR-TAXA4 sy-vline 
WA_HRP1657_STR-OKPO sy-vline 
WA_HRP1657_STR-TXAU1 sy-vline 
WA_HRP1657_STR-TXAU2 sy-vline 
WA_HRP1657_STR-TAXNONRES sy-vline 
WA_HRP1657_STR-ADDR1 sy-vline 
WA_HRP1657_STR-ADDR2 sy-vline 
WA_HRP1657_STR-CONT01 sy-vline 
WA_HRP1657_STR-PERN01 sy-vline 
WA_HRP1657_STR-CONT02 sy-vline 
WA_HRP1657_STR-PERN02 sy-vline      INTO ld_text SEPARATED BY SPACE.

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