ABAP Select data from SAP table ICLDIAGNOSIS_DI into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM ICLDIAGNOSIS_DI
*  INTO TABLE @DATA(IT_ICLDIAGNOSIS_DI2).
*--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_ICLDIAGNOSIS_DI INDEX 1 INTO DATA(WA_ICLDIAGNOSIS_DI2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<ICLDIAGNOSIS_DI>-CHIND_DIAG = 1.
<ICLDIAGNOSIS_DI>-INJURED = 1.
<ICLDIAGNOSIS_DI>-DIAGNO = 1.
<ICLDIAGNOSIS_DI>-DIAGORDER = 1.
<ICLDIAGNOSIS_DI>-DIAG_SUBCL = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_ICLDIAGNOSIS_DI-DIAG_PROC, sy-vline,
  WA_ICLDIAGNOSIS_DI-DIAG_ITEM, sy-vline,
  WA_ICLDIAGNOSIS_DI-CATAID1, sy-vline,
  WA_ICLDIAGNOSIS_DI-DIAGID1, sy-vline,
  WA_ICLDIAGNOSIS_DI-CATAID2, sy-vline,
  WA_ICLDIAGNOSIS_DI-DIAGID2, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_ICLDIAGNOSIS_DI 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_ICLDIAGNOSIS_DI 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_ICLDIAGNOSIS_DI INTO WA_ICLDIAGNOSIS_DI.


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

*Conversion exit DIAID, internal->external for field DIAGID1
CALL FUNCTION 'CONVERSION_EXIT_DIAID_OUTPUT'
  EXPORTING
    input =                      WA_ICLDIAGNOSIS_DI-DIAGID1
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ICLDIAGNOSIS_DI-DIAGID1.
WRITE:/ 'New Value:', ld_input.

*Conversion exit DIAID, internal->external for field DIAGID2
CALL FUNCTION 'CONVERSION_EXIT_DIAID_OUTPUT'
  EXPORTING
    input =                      WA_ICLDIAGNOSIS_DI-DIAGID2
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ICLDIAGNOSIS_DI-DIAGID2.
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_ICLDIAGNOSIS_DI_STR, 
CHIND_DIAG TYPE STRING,
INJURED TYPE STRING,
DIAGNO TYPE STRING,
DIAGORDER TYPE STRING,
DIAG_SUBCL TYPE STRING,
DIAG_PROC TYPE STRING,
DIAG_ITEM TYPE STRING,
CATAID1 TYPE STRING,
DIAGID1 TYPE STRING,
CATAID2 TYPE STRING,
DIAGID2 TYPE STRING,
ENDDATE TYPE STRING,
DIAGTYPE TYPE STRING,
LOCALIZATION TYPE STRING,
LOCALIZATION2 TYPE STRING,
SEVERITYCODE TYPE STRING,
GUARANTEE TYPE STRING,
DEPARTMENT TYPE STRING,
DIAGDESCRIPTION TYPE STRING,
MORPHOLOGY TYPE STRING,
EXCORIATION TYPE STRING,
DIAGGROUPID TYPE STRING,
ASSIGN_GUID_DIAG TYPE STRING,END OF T_EKKO_STR.
DATA: WA_ICLDIAGNOSIS_DI_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_ICLDIAGNOSIS_DI_STR-CHIND_DIAG sy-vline 
WA_ICLDIAGNOSIS_DI_STR-INJURED sy-vline 
WA_ICLDIAGNOSIS_DI_STR-DIAGNO sy-vline 
WA_ICLDIAGNOSIS_DI_STR-DIAGORDER sy-vline 
WA_ICLDIAGNOSIS_DI_STR-DIAG_SUBCL sy-vline 
WA_ICLDIAGNOSIS_DI_STR-DIAG_PROC sy-vline 
WA_ICLDIAGNOSIS_DI_STR-DIAG_ITEM sy-vline 
WA_ICLDIAGNOSIS_DI_STR-CATAID1 sy-vline 
WA_ICLDIAGNOSIS_DI_STR-DIAGID1 sy-vline 
WA_ICLDIAGNOSIS_DI_STR-CATAID2 sy-vline 
WA_ICLDIAGNOSIS_DI_STR-DIAGID2 sy-vline 
WA_ICLDIAGNOSIS_DI_STR-ENDDATE sy-vline 
WA_ICLDIAGNOSIS_DI_STR-DIAGTYPE sy-vline 
WA_ICLDIAGNOSIS_DI_STR-LOCALIZATION sy-vline 
WA_ICLDIAGNOSIS_DI_STR-LOCALIZATION2 sy-vline 
WA_ICLDIAGNOSIS_DI_STR-SEVERITYCODE sy-vline 
WA_ICLDIAGNOSIS_DI_STR-GUARANTEE sy-vline 
WA_ICLDIAGNOSIS_DI_STR-DEPARTMENT sy-vline 
WA_ICLDIAGNOSIS_DI_STR-DIAGDESCRIPTION sy-vline 
WA_ICLDIAGNOSIS_DI_STR-MORPHOLOGY sy-vline 
WA_ICLDIAGNOSIS_DI_STR-EXCORIATION sy-vline 
WA_ICLDIAGNOSIS_DI_STR-DIAGGROUPID sy-vline 
WA_ICLDIAGNOSIS_DI_STR-ASSIGN_GUID_DIAG sy-vline      INTO ld_text SEPARATED BY SPACE.

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