ABAP Select data from SAP table CRHD_API05 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP CRHD_API05 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 CRHD_API05. 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 CRHD_API05 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_CRHD_API05 TYPE STANDARD TABLE OF CRHD_API05,
      WA_CRHD_API05 TYPE CRHD_API05,
      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: <CRHD_API05> TYPE CRHD_API05.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_CRHD_API05.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM CRHD_API05
  INTO TABLE IT_CRHD_API05.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM CRHD_API05
*  INTO TABLE @DATA(IT_CRHD_API052).
*--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_CRHD_API05 INDEX 1 INTO DATA(WA_CRHD_API052).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_CRHD_API05 ASSIGNING <CRHD_API05>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<CRHD_API05>-KAPART = 1.
<CRHD_API05>-KAPNAME = 1.
<CRHD_API05>-FORT1 = 1.
<CRHD_API05>-FORT2 = 1.
<CRHD_API05>-FORT3 = 1.

ENDLOOP.

LOOP AT IT_CRHD_API05 INTO WA_CRHD_API05.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_CRHD_API05-FORTN, sy-vline,
  WA_CRHD_API05-ORTGR, sy-vline,
  WA_CRHD_API05-VGDIM, sy-vline,
  WA_CRHD_API05-VGARB, sy-vline,
  WA_CRHD_API05-ZEIWN, sy-vline,
  WA_CRHD_API05-ZWNOR, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_CRHD_API05 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_CRHD_API05 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_CRHD_API05 INTO WA_CRHD_API05.


*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 VGARB
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_CRHD_API05-VGARB
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CRHD_API05-VGARB.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field ZEIWN
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_CRHD_API05-ZEIWN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CRHD_API05-ZEIWN.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field ZEIWM
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_CRHD_API05-ZEIWM
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CRHD_API05-ZEIWM.
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_CRHD_API05_STR, 
KAPART TYPE STRING,
KAPNAME TYPE STRING,
FORT1 TYPE STRING,
FORT2 TYPE STRING,
FORT3 TYPE STRING,
FORTN TYPE STRING,
ORTGR TYPE STRING,
VGDIM TYPE STRING,
VGARB TYPE STRING,
ZEIWN TYPE STRING,
ZWNOR TYPE STRING,
ZEIWM TYPE STRING,
ZWMIN TYPE STRING,END OF T_EKKO_STR.
DATA: WA_CRHD_API05_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_CRHD_API05_STR-KAPART sy-vline 
WA_CRHD_API05_STR-KAPNAME sy-vline 
WA_CRHD_API05_STR-FORT1 sy-vline 
WA_CRHD_API05_STR-FORT2 sy-vline 
WA_CRHD_API05_STR-FORT3 sy-vline 
WA_CRHD_API05_STR-FORTN sy-vline 
WA_CRHD_API05_STR-ORTGR sy-vline 
WA_CRHD_API05_STR-VGDIM sy-vline 
WA_CRHD_API05_STR-VGARB sy-vline 
WA_CRHD_API05_STR-ZEIWN sy-vline 
WA_CRHD_API05_STR-ZWNOR sy-vline 
WA_CRHD_API05_STR-ZEIWM sy-vline 
WA_CRHD_API05_STR-ZWMIN sy-vline      INTO ld_text SEPARATED BY SPACE.

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