ABAP Select data from SAP table HRP1731 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP HRP1731 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 HRP1731. 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 HRP1731 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_HRP1731 TYPE STANDARD TABLE OF HRP1731,
      WA_HRP1731 TYPE HRP1731,
      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: <HRP1731> TYPE HRP1731.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_HRP1731.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM HRP1731
  INTO TABLE IT_HRP1731.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM HRP1731
*  INTO TABLE @DATA(IT_HRP17312).
*--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_HRP1731 INDEX 1 INTO DATA(WA_HRP17312).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_HRP1731 ASSIGNING <HRP1731>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<HRP1731>-MANDT = 1.
<HRP1731>-PLVAR = 1.
<HRP1731>-OTYPE = 1.
<HRP1731>-OBJID = 1.
<HRP1731>-SUBTY = 1.

ENDLOOP.

LOOP AT IT_HRP1731 INTO WA_HRP1731.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_HRP1731-ISTAT, sy-vline,
  WA_HRP1731-BEGDA, sy-vline,
  WA_HRP1731-ENDDA, sy-vline,
  WA_HRP1731-VARYF, sy-vline,
  WA_HRP1731-SEQNR, sy-vline,
  WA_HRP1731-INFTY, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_HRP1731 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_HRP1731 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_HRP1731 INTO WA_HRP1731.


*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.
ENDFORM. 

*&---------------------------------------------------------------------*
*& Form process_as_string_field_values
*&---------------------------------------------------------------------*
FORM process_as_string_field_values CHANGING p_EKKO LIKE wa_EKKO.

TYPES: BEGIN OF T_HRP1731_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,
CATEGORY TYPE STRING,
METHOD TYPE STRING,
ATTREQ TYPE STRING,
DELMODE TYPE STRING,
AGRTYPE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_HRP1731_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_HRP1731_STR-MANDT sy-vline 
WA_HRP1731_STR-PLVAR sy-vline 
WA_HRP1731_STR-OTYPE sy-vline 
WA_HRP1731_STR-OBJID sy-vline 
WA_HRP1731_STR-SUBTY sy-vline 
WA_HRP1731_STR-ISTAT sy-vline 
WA_HRP1731_STR-BEGDA sy-vline 
WA_HRP1731_STR-ENDDA sy-vline 
WA_HRP1731_STR-VARYF sy-vline 
WA_HRP1731_STR-SEQNR sy-vline 
WA_HRP1731_STR-INFTY sy-vline 
WA_HRP1731_STR-OTJID sy-vline 
WA_HRP1731_STR-AEDTM sy-vline 
WA_HRP1731_STR-UNAME sy-vline 
WA_HRP1731_STR-REASN sy-vline 
WA_HRP1731_STR-HISTO sy-vline 
WA_HRP1731_STR-ITXNR sy-vline 
WA_HRP1731_STR-CATEGORY sy-vline 
WA_HRP1731_STR-METHOD sy-vline 
WA_HRP1731_STR-ATTREQ sy-vline 
WA_HRP1731_STR-DELMODE sy-vline 
WA_HRP1731_STR-AGRTYPE sy-vline      INTO ld_text SEPARATED BY SPACE.

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