ABAP Select data from SAP table EHPRCS_IMPCOMP into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM EHPRCS_IMPCOMP
*  INTO TABLE @DATA(IT_EHPRCS_IMPCOMP2).
*--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_EHPRCS_IMPCOMP INDEX 1 INTO DATA(WA_EHPRCS_IMPCOMP2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<EHPRCS_IMPCOMP>-EXTID = 1.
<EHPRCS_IMPCOMP>-INTID = 1.
<EHPRCS_IMPCOMP>-EXTFATHERID = 1.
<EHPRCS_IMPCOMP>-INTFATHERID = 1.
<EHPRCS_IMPCOMP>-MATCAT = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_EHPRCS_IMPCOMP-COMPLOW, sy-vline,
  WA_EHPRCS_IMPCOMP-COMPUPP, sy-vline,
  WA_EHPRCS_IMPCOMP-COMPAVG, sy-vline,
  WA_EHPRCS_IMPCOMP-COMPEXP, sy-vline,
  WA_EHPRCS_IMPCOMP-COMPCAT, sy-vline,
  WA_EHPRCS_IMPCOMP-COMPEXCVAL, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_EHPRCS_IMPCOMP 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_EHPRCS_IMPCOMP 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_EHPRCS_IMPCOMP INTO WA_EHPRCS_IMPCOMP.


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

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

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

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

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

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

*Conversion exit ALPHA, internal->external for field HEADEXTID
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_EHPRCS_IMPCOMP-HEADEXTID
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_EHPRCS_IMPCOMP-HEADEXTID.
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_EHPRCS_IMPCOMP_STR, 
EXTID TYPE STRING,
INTID TYPE STRING,
EXTFATHERID TYPE STRING,
INTFATHERID TYPE STRING,
MATCAT TYPE STRING,
COMPLOW TYPE STRING,
COMPUPP TYPE STRING,
COMPAVG TYPE STRING,
COMPEXP TYPE STRING,
COMPCAT TYPE STRING,
COMPEXCVAL TYPE STRING,
COMP_ESTCAT TYPE STRING,
SEGNO TYPE STRING,
HEADEXTID TYPE STRING,
ALPGR TYPE STRING,
PREF_ALT TYPE STRING,
ORD TYPE STRING,END OF T_EKKO_STR.
DATA: WA_EHPRCS_IMPCOMP_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_EHPRCS_IMPCOMP_STR-EXTID sy-vline 
WA_EHPRCS_IMPCOMP_STR-INTID sy-vline 
WA_EHPRCS_IMPCOMP_STR-EXTFATHERID sy-vline 
WA_EHPRCS_IMPCOMP_STR-INTFATHERID sy-vline 
WA_EHPRCS_IMPCOMP_STR-MATCAT sy-vline 
WA_EHPRCS_IMPCOMP_STR-COMPLOW sy-vline 
WA_EHPRCS_IMPCOMP_STR-COMPUPP sy-vline 
WA_EHPRCS_IMPCOMP_STR-COMPAVG sy-vline 
WA_EHPRCS_IMPCOMP_STR-COMPEXP sy-vline 
WA_EHPRCS_IMPCOMP_STR-COMPCAT sy-vline 
WA_EHPRCS_IMPCOMP_STR-COMPEXCVAL sy-vline 
WA_EHPRCS_IMPCOMP_STR-COMP_ESTCAT sy-vline 
WA_EHPRCS_IMPCOMP_STR-SEGNO sy-vline 
WA_EHPRCS_IMPCOMP_STR-HEADEXTID sy-vline 
WA_EHPRCS_IMPCOMP_STR-ALPGR sy-vline 
WA_EHPRCS_IMPCOMP_STR-PREF_ALT sy-vline 
WA_EHPRCS_IMPCOMP_STR-ORD sy-vline      INTO ld_text SEPARATED BY SPACE.

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