ABAP Select data from SAP table EHPRCV_IMSEGF into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM EHPRCV_IMSEGF
*  INTO TABLE @DATA(IT_EHPRCV_IMSEGF2).
*--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_EHPRCV_IMSEGF INDEX 1 INTO DATA(WA_EHPRCV_IMSEGF2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<EHPRCV_IMSEGF>-MANDT = 1.
<EHPRCV_IMSEGF>-IMPTYP = 1.
<EHPRCV_IMSEGF>-SEGMENT = 1.
<EHPRCV_IMSEGF>-FIELD = 1.
<EHPRCV_IMSEGF>-FIELDNA = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_EHPRCV_IMSEGF-LONGTEXT, sy-vline,
  WA_EHPRCV_IMSEGF-ORD, sy-vline,
  WA_EHPRCV_IMSEGF-MATCAT, sy-vline,
  WA_EHPRCV_IMSEGF-IDORD, sy-vline,
  WA_EHPRCV_IMSEGF-IDDB, sy-vline,
  WA_EHPRCV_IMSEGF-CONVERTF, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_EHPRCV_IMSEGF 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_EHPRCV_IMSEGF 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_EHPRCV_IMSEGF INTO WA_EHPRCV_IMSEGF.


*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 UNIT
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_EHPRCV_IMSEGF-UNIT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_EHPRCV_IMSEGF-UNIT.
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_EHPRCV_IMSEGF_STR, 
MANDT TYPE STRING,
IMPTYP TYPE STRING,
SEGMENT TYPE STRING,
FIELD TYPE STRING,
FIELDNA TYPE STRING,
LONGTEXT TYPE STRING,
ORD TYPE STRING,
MATCAT TYPE STRING,
IDORD TYPE STRING,
IDDB TYPE STRING,
CONVERTF TYPE STRING,
LEVELDEPEND TYPE STRING,
UNITSEGF TYPE STRING,
UNIT TYPE STRING,
OBTBL TYPE STRING,
FLINK TYPE STRING,END OF T_EKKO_STR.
DATA: WA_EHPRCV_IMSEGF_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_EHPRCV_IMSEGF_STR-MANDT sy-vline 
WA_EHPRCV_IMSEGF_STR-IMPTYP sy-vline 
WA_EHPRCV_IMSEGF_STR-SEGMENT sy-vline 
WA_EHPRCV_IMSEGF_STR-FIELD sy-vline 
WA_EHPRCV_IMSEGF_STR-FIELDNA sy-vline 
WA_EHPRCV_IMSEGF_STR-LONGTEXT sy-vline 
WA_EHPRCV_IMSEGF_STR-ORD sy-vline 
WA_EHPRCV_IMSEGF_STR-MATCAT sy-vline 
WA_EHPRCV_IMSEGF_STR-IDORD sy-vline 
WA_EHPRCV_IMSEGF_STR-IDDB sy-vline 
WA_EHPRCV_IMSEGF_STR-CONVERTF sy-vline 
WA_EHPRCV_IMSEGF_STR-LEVELDEPEND sy-vline 
WA_EHPRCV_IMSEGF_STR-UNITSEGF sy-vline 
WA_EHPRCV_IMSEGF_STR-UNIT sy-vline 
WA_EHPRCV_IMSEGF_STR-OBTBL sy-vline 
WA_EHPRCV_IMSEGF_STR-FLINK sy-vline      INTO ld_text SEPARATED BY SPACE.

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